english text - baggermodelle · the liebherr ltm 1400 in a nice grey-red color combination, a...

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2BAGGERMODELLE 3-2011

Translation of page 3

BAGGERMODELLE –How to continue

You are holding the 10th issue of our magazine in your hands. Un-fortunately there is no reason to celebrate; at the moment there is unfortunately no reason.

BAGGERMODELLE has been recognized as a force in the trade but the number of subscribers has not developed as expected and the financial resources of an enthusiast that I am, I have to confess, are not enough to keep the dream alive in the long term.

In order to assure that this issue is not the last one, I am currently looking for sponsors that would be interested in supporting BAG-GERMODELLE magazine. How-ever, the deadline for this decision has to be by the end of May. We are keeping you all up to date on our Facebook page. But you, the reader can help too. For example by encouraging a collector friend to take the plunge and take out a subscription so that this small but

fine magazine can continue. (Of course bills for the subscription would only be sent out once the continuation of the magazine is guaranteed.)

In case the rescue attempt is suc-cessful, I have to let you know that we will be forced to raise the price of the subscription starting in the fall, to guarantee that we can secu-re the future of the magazine per-manently. I am very hopeful that we will have a reason to celebrate in the next issue of BAGGERMO-DELLE.

We, the authors and photogra-phers and the editor of BAGGER-MODELLE have spared no effort to give you once more a first class reading experience. So, despite everything, I hope you have a lot of fun reading this issue

Daniel Wietlisbach

Editorial

BAGGERMODELLE online:

www.baggermodelle.netwww.facebook.com/baggermodellewww.youtube.com/baggermodelle


Translation of pages 6 – 9

Dan Models 1:50

There was a time when the name Euclid was synonym for dump truck. The newest model from Dan Models depicts that early prototype (see also pages 32-34).

The history of the “Eucs” is cap-tured very well in the book “Euclid 1924 – 1968” authored by Eric C. Orlemann.

Beginning in 1962 the R-30 was produced in three versions for a total of 635 pieces. The original of the model under discussion belongs to the first series (160 pieces) with its trademark cornered, not smooth, fenders. However, the cabin still had the rounded off look.

The engine for this machine was a GM Diesel engine 6-110 producing 336hp and was capable of trans-porting 27 Tonnes (30 short tonnes).

The model from Dan Models is correct in all instances, when che-cked against the prototype. The first class resin castings comple-mented with crisp photo etched

metal pieces gives a very favou-rable first impression. The chassis is very detailed: the suspension is there as is the steering mechanism although it is not functional. The hydraulic oil and the air tank are mounted on the girder on the left side of the chassis. Across the rear of the driver’s cabin is the large diesel fuel tank. The transmission assembly is modeled in its entirety. Tires and rims are made from resin and are nice, crisp castings. The rounded off cabin is very convin-cing, and is augmented with scale size, free standing hand rails, win-dow wipers and rear view mirrors. The cabin interior shows off the typical large steering wheel. The stem of the wheel assembly carries on the underside of the cabin as in the original. The mock up of the engine can be seen underneath the engine cover. Unfortunately, the fi-nely detailed air filter assembly on our model was mounted somewhat crookedly. The radiator grille in front of the radiator is made from a

super fine etching. The heavy duty skip is modeled prototypically cor-rectly. Flaps and stone shields are modeled and complete this part of the model. The tipping cylinders are made in two steps, just like the real thing. The paint job and the let-tering are first class and faultless. Dan Models is planning to produce more Euclids (see Collector’s Gui-de on page 9). This model can be bought from dealers or directly at www.miniatur-models.com

SpecCast 1:50

The very well known model of the Bantam C-35 has been re-released, this time mounted on a White truck chassis WC with a half cabin. This excavator, widely used in the US, is a nice addition and adds variety to the offerings. The so called truck excavators are the forerunners of today’s mobile ex-cavators. The engine compartment hood of the White truck can be opened. The front axle is movab-le and the back hoe or the optional excavating shovel can be operated using the keys for the two winches.

New on the market

Collector‘s guideSo that you do not miss any of the new model announcements, the latest releases are listed here in short form.

Typ Scale Producer Available at Additional information

Caterpillar 385C L, 385C FS, 390D LME 1:48 CCM Dealers www.ccmodels.com

Caterpillar 992C with beadless tires 1:48 CCM Dealers www.ccmodels.com

Caterpillar Umbrella for Cat 834 or Cat 988 1:48 CCM Dealers www.ccmodels.com

Liebherr R 924 Compact «Eurovia» 1:50 Conrad Vinci Shop www.webshop-vinci.com

Caterpillar 594 «Vinci» 1:50 Conrad Vinci Shop www.webshop-vinci.com

Terex AC100-4 «Mammoet» 1:50 Conrad Mammoet www.mammoetstore.com

Euclid R-15, R-22, R-40, 24 TDT with coal hauler, 1:50 Dan Models Dealers www.miniatur-models.com

18 LDT Rocker and direct

John Deere 850K 1:50 Ertl Dealers

Komatsu D475A 1:50 First Gear Dealers www.firstgearreplicas.com

Komatsu D475A «white / blue» 1:50 First Gear Roy Ferguson www.royfergusonsales.com

Set including 2 FTF «Stoof» and «Biglift» 1:50 WSI Mammoet www.mammoetstore.com

Set «coke drum transport» including 12 Scheuerle 1:50 WSI Mammoet www.mammoetstore.com

Intercombi Trailer, 3 Tractors «Mammoet»

Manitowoc 4600 Ringer «Lampson» 1:87 CCM Dealers www.ccmodels.com

Mercedes Actros / semi low boy «Kahl» 1:87 Herpa Dealers www.herpa.de

Joal 1:32

The JCB Midi CX backhoe loa-der comes in two versions. One with a side adjustable backhoe arm and one with a centre moun-ted back hoe arm. The back hoe at-tachment can be taken off both mo-dels as per prototype and the front axle is easy steerable. The models are nicely detailed, showing clean workmanship and the overall look is very pleasing. The version with the side adjustable arm also has a set of traffic signs included, a very welcome addition.

Kibri 1:87

Among the first ready to run models under the new Viessman management were the Mercedes Actros three axle dumper and the Liebherr A934. The models have their lettering printed on; finally, a farewell to the thick stick-on let-tering of the past. Unfortunately, the dumper lacks an extendable tipping column, so it can not be shown in the dumping mode.

Norscot 1: 50

Simultaneously with the model on our title page the Caterpillar 24M grader and the 587 pipe layer appeared on dealer’s shelves.

Both models have full functiona-lity and many details. Compared to the first release, the new pipe layer has two winches for the operation of the jib and the hook has already been reeved in.

TWH 1:50

The existing model of the Grove RT540E has been re-issued in the


paint scheme of the French firm “Ayala”. The finely detailed and functional model gives a good im-pression. The telescoping boom is in four parts and can be augmented with a lattice tip. The interior of the cabin has all kinds of details down to the fan and all lettering is there and correct.

Herpa 1:87

We are especially attracted to the lowboy tractor trailer unit in the “Frederici” color scheme with a crane lattice tip load. Worthwhile mentioning is a roll off skip tractor trailer unit for the firm of “Werz”, the Liebherr LTM 1045 in the “Hack” color scheme, the Liebherr PR 734XL and the Iveco three ax-led dump truck in the Herpa fleet colors and the construction trailer in orange. To make sure that the Herpa wind mill is soon complete, a set of three heavy duty, extended length, lowboy tractor trailer units from the firm of “P.Adams”, com-plete with a load of wind turbine wings have been released.

Busch 1:87

The Weimar mobile excavator T 174 always provides a good ex-cuse for yet another color variant: in yellow with crane hook “ACZ Schmöln” and in “Siena green” with a grappler hook.

NZG 1:50 The nicest color scheme until

now, perhaps, is the blue and yel-low color scheme of the Finnish crane and transportation firm “Ha-vator”. In these colors, the Lieb-herr LTM 12200-9.1 is a new re-

lease. Color variants in the “Botte” scheme for the Liebherr LB28 and for “Heuvelman” the R916 Advan-ced . For the Vögele Super 1803-2 a new paint coat in the colors of “Frauenrath” appears.

Ad Gevers 1:50

Norscot uses a very technically intensive CNC milling process to create an aluminum soil rake for the Cat D8R. With this attachment, whole shrubs and trees including their roots can be removed from the ground. The kit costs € 35.00 and is made up of 14 extremely well fitting parts. Please order di-rect from: [email protected]

Volvo 1:50

Despite the absence of the name Motorart on the model, it is sold through the Swedish lab. The mo-del is a complete new develop-ment. The massive boom has all the lines modeled and they can be followed all the way to the concre-te shears. Unfortunately, these are not made to turn. The cabin, how-ever, can be lowered forward and the tracked chassis is refreshingly easy to operate.

Siku 1:55 / 1:87

The four axle mobil crane cannot deny its Liebherr ancestry and has been newly released in fire engine red in the in-house scale of 1:55.

The Liebherr LTM 1400 in a nice grey-red color combination, a Sca-nia three axle dump truck and the Volvo EW 180C mobil excavator in a beautiful set. All models have a great amount of functionality for the scale of 1:87.



bedarf AG, Bassersdorf), the main importers for Hanomag machines in Switzerland.

Discovered at a “Trax race”

At the end of the 60s, the Swiss Army conducted a series of evalua-tions for the acquisition of an Army tracked excavator. Part of the pro-cess was a so called “Trax race”. On a highway construction site in a forest near an AMP (Armee-Motorfahrzeug Park or in English: army vehicle park site), all machi-nes that were in consideration had to complete several work assign-ments over a couple of days. The tracked loaders or “Trax” as these machines are still known in Swit-zerland, where named after the first tracked excavator loader T2 on a Caterpillar D2 chassis. Included in the line up were: Caterpillar 955H, International 175, Allis-Chalmers HD-7 and finally a Hanomag K 11. All the machines were operated by the firm’s demonstration operators. The contest covered different kinds

of excavating jobs, the time spent, and the quantity of excavated ma-terial. As all four machines worked simultaneously a fierce completion ensued. The results of the first day of competition made some of the representatives of the different ma-kes somewhat nervous. For examp-le, one of the competitors flew in a new professional driver from the US. MBA remembered the favoura-ble impression that Hugo Oschwald had made operating his loader, and he was hired on for the reminder of the week. With a Cheshire cat grin, Hugo Oschwald remembers leaving the competing machines behind in the dust and departing the job site every evening as the winner.

However, it seemed that the Army Brass was not overly im-pressed by his performance as they did not choose the Hanomag loa-der but purchased 48 Cat 955Ks at the beginning of the eighties. Hugo Oschwald did land a new job due to his performance; he beca-me a demonstrating technician for MBA’s line of excavator and loa-

Varied collecting interests of Hugo Oschwald

Premier modelsHugo Oschwald’s goal for the last four deca-

des has been to collect the greatest variety of

construction machines possible. For this rea-

son, his collection is one of the most interes-

ting around.

by Daniel Wietlisbach

Contrary to the usual lead in to our stories about the

collector’s interest in construction machines having started when they were infants and still in their cribs, it is quite a different story with Hugo Oschwald. At the beginning of the 60s he was searching for a well paid profession to finance his two expensive hobbies, cars and motorcycles. He hit pay dirt, lite-rally, when he landed a job as an operator of a tracked loader for a garden construction firm. The trai-ning period for the job lasted just two days on the firm’s own const-ruction site. After that he was sent to his first job site with the 3.5 ton Oliver OC-46 tracked loader. At the time, when the mechanisation of construction sites was in full swing, this was considered to be a modern machine. The young machine ope-rator later worked exclusively on Hanomag tracked loaders, first on a K 320, later on a K11. The latter was his favourite machine, and he still is very enthusiastic when he describes it. Its six cylinder engine, paired with a power shift gearbox and torque converter and sporting a very well designed and comfor-table operator’s cab made it a very efficient loader. At least it was so when Hugo Oschwald was on the controls as noticed by the people from MBA (Maschinen und Bahn-



der models. At least one Hanomag K11 (machine number 455403) with a rear ripping attachment VS 60 was purchased by the Army. The machine was retired from the army in 1999 and returned to Hugo Oschwald who sold it second hand to a new owner in Hungary.

A start with Hanomagand O&K models

For the next twelve years he was able to demonstrate the newest in wheeled and tracked loaders for his new employer. There, for the first time, he come in contact with con-struction machine models and his interest was kindled. The first mo-del acquired for his collection was a Hanomag K12C by Cursor (#1269) which still graces one of his display cases. Later the Hanomag wheeled loader from the same maker (#569) was added. MBA however was well known for importing machi-nes from the German maker O&K. This resulted in quickly enlarging his collection with models from this firm. Some of the models were

purchased, but others were gifts from the manufacturers, a common practice at that time. At demonstra-tions of competing firms, a lively exchange of models between ope-rators contributed to the fast incre-asing collection, albeit mainly in wheeled loader models. The new passion for collecting did not stay a secret for long and so Hugo Osch-wald was able to purchase smaller collections from co-workers who had lost interest in the hobby. He made new friends when he visi-ted hobby shows and many times joined purchasing collectives to acquire new, sought-after models. After four decades he was close to achieving his goal, a collection of construction machines. With the ever-increasing value of his collec-tion and his knack of picking up the “right” models, he often purchases several models but puts only one in his display cases.

Sold his stash

The collection displayed very tastefully in three custom made ca-

binets grew to about four hundred models. In the attic he had stashed away about double that number in original boxes. Only a few years ago he sold the whole squirreled away loot as a job lot to a dealer. Remaining are the above menti-oned show cases. There, some re-ally rare pieces can be found. First-ly, is the rare color scheme variant of the O&K RH25 by Ziss in yel-low and black with P&H lettering and the Walking dragline excava-tor Marion 7200 from the early days of CCM. This machine was produced in a small series of only 100 pieces. The favourite piece of his collection is the Caterpillar D6 with a rear mounted power winch and a Giovanetti ripping attach-ment trailer. This was constructed from three kits from EMD/ATM. The larger part of the collection is made up of models in 1:50 / 1:48 scale; there are a few in 1:25 and 1: 40 scale. The collection is stea-dily being improved in quality and is expanding, if the opportunity arises.

For example, if Hugo Oschwald discovers a better preserved model than one he has at a hobby show, he will replace the lesser quali-ty one with the better one. Only six months ago he finally became computer literate and now is se-arching EBay for the few missing models in his collection.

On his list are: Hanomag 15F by Conrad (#2427) and a plastic Po-clain Mini loader, manufacturer unknown. Today he takes his pas-sion for collecting a little less seri-ously. He is able to be patient and wait until there is an opportunity to add to the collection and even weighs the possibility of disposing of the entire collection eventually.

The collector

Hugo Oschwald worked for ten years as an operator on tracked loaders. For the next three decades he worked for MBA, first as a demonstrator/operator and then later as a sales rep. Then he became a technical advisor for wheeled loaders and at the end was respon-sible for second hand sales for the firm. For the last seven years he has sold construction machine attachments for the firm of Tecnopart AG. Whilst working at MBA, he met his future wife Marlyse. She understands his passion for collecting and even joins in the fun of adding to it. Motor bikes are still one of his passions, the other one is collecting pins from the 50s; he likes pins that have cars, tractors and of course construction machines or trucks as motifs. Among his 500 plus pins today are some fairly rare ones.



by Carsten Bengs

The model consists of two mo-dules, one with three and one

with five axles, each pulled by a Scania four axle tractor unit. The new model from Tekno was crea-ted with a lot of care and attention to all details. Even though the mo-del look a bit “lighter” than com-parative models, for example from Conrad, the adaptability and the multitude of detail are convincing. For our closer look a model in the colors of Martin Wittwer AG, from Wattenwil, situated between Bern and Thun in Switzerland, was pro-vided for us.

The tractor unit

It is easy to tilt the cabin of the truck forward to reveal the very nice mock up of the unit’s engi-ne. All steps and the lettering of the model conform exactly to the real thing. This also goes for all rear view mirrors, spot lights and warning lights. Behind the cabin a heavy duty tower is mounted; it is made mostly from plastic. Sto-

rage lockers and lids are indicated. Supply lines for the trailer are also mounted there. The chassis has clean body work and anti-skid pla-tes. The interior of the Scania To-pline Tractor unit has been copied exactly in model form. The front axle can be steered, but the steering angle is somewhat limited. Using a trailer coupling the lowboy trailer including the swan neck connector can be safely hitched to the tractor.

Low boy trailer

The assembly for the model requi-res some dexterity. The swan neck connector has to be connected to the three axle front module; the screw driver required for this delicate ope-ration comes with the Tekno model.

Alternatively, the model can be displayed without this module. War-ning signs and detailed lettering for the firm owning the trailer are also on the swan neck connector. The model comes with separate warning signs that can be attached to the trailer for over-width loads. Small hydraulic lines connect to the first module. Between the two modules

is the load bearing bridge, modeled as a low boy configuration. In this mode, tracked excavators like the Volvo EC 460 by NZG or the Hita-chi ZX 870 from WSI can be trans-ported. Tekno has included a lot of extra detailing parts. For example the lowboy bridge can be adapted and made wider so that the wheeled loader can also be transported. The plastic parts used for this click into the low boy bridge piece and the de-cking pieces go on top of this. The bridge can also be made to telescope so it is very easy to transport over-length loads. The single axles of the model which are made to steer and have a very good steering angle are very convincing. The suspensions for the axles all have small springs so that they respond to a finger touch and spring back; a very clever solution. This is a very welcome de-tail that will please many modellers!

On the module’s sides there are small o rings moulded on for the lashing down of the freight. They are also lettered for Goldhofer. The rims are nicely made and there is a rubber flap behind the third axle of the front module. The lettering at the rear of the model is also im-pressive.

The plate is mounted, as on the original, directly over the safety labels. Warning lights are there as well as the holders for the warning signs for oversize loads. All in all, Tekno has, with the Goldhofer mo-dule combination, released a very nicely detailed model. The additi-onal functionality built in did not disappoint the high standards ex-pected by the collector. And the paint scheme and lettering for the Swiss transport firm of Martin Wittwer is a must for any Swiss Miniature Transportation outfit.

Goldhofer low boy trailer from Tekno in 1:50 scale

ModularFor about a year now the new heavy duty hau-

ling combination from Tekno has been ano-

ther interesting model from the large Gold-

hofer program.



by Urs Peyer

Caterpillar’s entry into the mi-ning dump truck market was

in 1962. Thirty seven years later the truck numbered 50,000 left the assembly line in Decatur, Illinois. Despite the fact that Caterpillar is the world leader in the produc-tion of large mining dump trucks, it was not the first firm to produ-ce a dump truck with a payload of 240st (short tons – the equivalent of 218 tonnes). This honour goes to the engineers at Wiseda (Lieb-herr since 1995). Using the mo-del designation KL-2450, a dump truck with the model designation Dumper 1982, was launched at the Minexpo in Las Vegas. As a power plant, the engineers cho-se a 16 cylinder diesel engine by MTU producing 2,500hp. The next entry in this class of large mining dump trucks came from Dresser (today Komatsu) with their model 830E. The truck had a 20 cylin-der engine made by Detroit pro-ducing 2,234hp. Dresser used the former LeTourneau factory site in

Peoria, Illinois to assemble their mining dump trucks. Two kilome-tres downstream is the head office of Caterpillar. In 1984 Caterpil-lar successfully entered the abo-ve ground mining dump market with the model 785 (136 tonnes capacity) and with the larger 789 (177 tonnes capacity) in 1986. To complete the palette of dump truck offerings for this industry, Cater-pillar started to develop the 793 model at the end of 1990. Con-trary to the diesel-electric powe-red 830E from Dresser, the 793 had purely mechanical drive. The 16 cylinder motor used produced 2,057hp and had a 6 gear automa-tic transmission system. The stan-dard dumping bin had a capacity of 129 cubic metres or 218 tonnes. Production of the then largest mi-ning dump truck started in January of 1991. The B-Series of the mo-del had already appeared in 1992. An additional 109hp of power was available when the C-series pre-miered in 1996. And in 2004, the D-Series managed to increase the power output to a total of 2,415hp.

There are several 793Bs with over 100,000 hours logged in use at the giant Sierrita Copper Mine in Arizona. Due to a highly effective and well managed replacement and maintenance program over the last 15 years, these mining trucks are still in use around the clock today.

2650 PS

At the Minexpo in 2008, Cater-pillar showed off their new 793F. A C175, 16 cylinder engine with a displacement of 85 litres producing 2,650hp was the power plant for the new mining dump truck. The pay-load remained the same as in previ-ous models at 227 tonnes (250 sht).

Three different bins are on offer for this model. A light goods bin for coal with a carrying capaci-ty ranging from 238 to 307 cubic metres. Secondly, a customizable MSD II bin, with a capacity of 161 to 191 cubic meters, and finally the X body standard bin with 148 to 168 cubic metre holding capa-city. Despite its maximum loaded weight of 390 tonnes, the 793F can

Caterpillar 793F

Successful modelsFor the last 50 years, Caterpillar has been

building mining dump trucks successfully. It

is very interesting to follow the development

toward the modern 793F model.


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reach a top speed of 60km/h on a well maintained road. When the unit is equipped with the MSD II dumping bin the 793F truck mea-sures 8295 Millimetres in width and 13702 Millimetres in length. According to mining safety rules, mining roads for the above ground mining sites have to be, at a mini-mum, three times the width of the vehicles used. In comparison, this

would be the equivalent of a six lane high way including shoulder strip in Switzerland. In order to

meet the demand for all sectors of the above ground mining industry, a diesel electric version, the 793F AC will be launched in the near future. This is to ensure that the customers can choose which versi-on is the optimal machine to fit the specification required. Caterpillar is the only manufacturer that pro-duces both propulsion versions in the 250 short ton class.

Cat 793F on YouTube

On our page at www.youtu-be.com/baggermodelle has a link to the Caterpillar 793F in the favorites tab.




Norscot released the 793D in 2006 as the second in a series

named “collectors quality models”, meaning, among other details, that the hand rails were made of metal. Despite this, what most collectors missed was a mock up of the engine. After the first release with a “waffle skip”, a second release with the MSD skip followed about a year later.

The hefty model of the 793F Cat leaves a good impression: it is well proportioned, despite the somewhat lax interpretation of the measure-ments of the prototype. For examp-le, the cabin is 7 millimetres too high and the width of the tires in the front are 7 and in the rear, 4 milli-metres too large. Because of the large dimensions of the model these deviations are not really noticeable.

Chassis

The rubber tires are the only parts that could be left ‘as is’ from the 793D models as they are cor-rect for the original. The new rims are very nice and are engraved on

the front and rear which is impor-tant on a model of this size. Hap-pily, there is a complete detailed mock up of the Cat C175-16 die-sel engine. On the operator’s deck there is an operating hatch which, when opened, affords a view of the engine. Unfortunately, the drive shaft between the engine and the rear axle joint is missing. Perhaps this is so because the rear axle is sprung and moveable. The rear axle suspension is modeled in its entirety but because the springing is limited, the rear of the truck ri-des higher than the front. The fuel tank is situated on the left hand side of the frame between the front and rear axles while on the right hand side sits the tank for hydrau-lic fluids. Both are made from a well detailed plastic casting.

The front of the machine, with its many details invites the observer to linger a bit and take it all in. The very nice radiator grill is a plastic casting as are the steps and ladders. Most hand rails and grabs are made from metal. The operator’s cabin has a fully detailed, one colour interior. A bit more colour would have impro-

ved the look immensely. The win-dows are fitted in from behind the openings; unfortunately, this shows the thickness of the material used in casting. Two red fire extinguishers and a two colour exhaust stack sys-tem with the openings “correctly” drilled open, round off the details on the deck. The loading weight gauge is cast on for both sides; however it lacks the printed-on scales. Two, correctly-sized rear view mirrors are there as well, finishing off the list of detail parts on the model.

The skip

By choosing the X body stan-dard skip, the new model is clearly different from the others released. The comparatively smaller skip is designed for the transportati-on of heavy and dense materials, and the model translates this look very well. The two tier dumping cylinders are modelled correctly as in the original, but the middle one has not been chromed. They can hold the skip comfortably in the middle and maximum raising mode. The two steel bars moun-ted on the rear are there to remo-ve stones that get stuck between the twin tires. The steel securing safety ropes are modeled in scale thickness and are very fine. They can be disconnected at the bottom, but there is no alternate place for them to be attached in a safety mode. The high gloss paint job is of the usual quality expected from Norscot; however, its application is a bit too thick. Fortunately, the engraved details in the model are very crisp, and the paint does not obscure them. The lettering is cor-rectly applied, crisp and legible and at the correct places.

Caterpillar 793F fromNorscot in 1: 50 Scale

Heavy bodyNorscot releases a completely redesigned mo-

del of the 793F five years after the last release

of the 793D model.



The remote cont-

rolled bucket loader

#6200 from GAMA si-

gnalled the ascent of

plastic construction

of models over the

traditional metal.

By Robert Bretscher

In contrast to the #8100 wheeled loader from GAMA made com-

pletely of metal, previously intro-duced in issue 4-2010, this remote controlled tracked model made in 1965 is made almost completely from plastic. Only the bottom chas-sis plate housing the engine and the sites of all parts screwed or bolted on are made from tin plate. In the

60s and 70s the use of metal in the production of toys was pushed more and more to the background and was even thought of as old fa-shioned and not modern enough.

And so it was that the firm of GAMA (Georg Adam Mangold) started to produce toys in the so- called combined material mode, a mix of tin plate and plastic construc-tion. A great many toy makers who did not follow this trend had to stop production sooner or later and close up shop because of slumping sales.

The advantage of using plastic as a material is that even 50 years after being made, the colors are still fresh and intact without rust or chipped paint as found on me-tal models. The exception to this would be if the toy had been cons-tantly left out in the sun.

On the down side, the plastic toys often did not withstand to the rigours of sandbox play. Conse-

Tinplatequently these toys are rare today and hard to find on the collector’s market. These toys are interesting and appealing at anytime.

The battery powered toy, opera-ted by a three volt electric motor, has sound as well as forward and reverse gears. The sound is made by a spring that is dragged along a cogged wheel thus producing a rattling noise. The red light on the top flashes as soon the toy begins to operate.

The model managed to operate for many years in a child’s room where many trips taken on ever increasingly steep slopes until the engine stalled. Luckily, in this case, the unit has a reverse gear so the model could safely return down the slope to the floor.

It is hard to believe that the tra-cked toy is still in operating condi-tion and the author enjoys using it occasionally.



Here you can challen-

ge your know-how.

Recognize the machi-

ne and win a model!

by Remo Stoll

There is still some “old iron” around that is still at work!

This grader has almost 30 years on

the clock, a real old age pensioner. It has logged over 9,300 hours and, if it could talk, would tell quite a few stories. Since it is working on an Autobahn construction site it is clear that it is not yet ready to be relegated to the scrap heap. Its job on this site is to smooth the sub strata ready for paving.

Do you recognize the old timer? If so, write us a postcard with the exact type and maker’s name. We accept emails too of course.

Solution from BAGGERMODELLE 2-2011

The dump truck is a Caterpillar 769B. Since there were more correct entries than prizes, a draw was held to decide the winners.

Martin Seitz from Sachsenheim (D) won the MAN TGX 41.680 8x4, chromed from NZG. Cornelia Meier from Mitterteich (D) won the Menzi Muck A91 mobil by FM-Modellbau and Mario Schalbetter from Termen (CH) won the Mercedes Actro 4x4 all wheel dumper from Conrad. We congratulate the winners!

(Addresses are on page 42). The competition ends on June 15, 2011. If there are more correct answers than prizes, a draw will be held. The prizes for this competition are:

A Liebherr R916 Advanced “Heuvelman” from NZG, a Menzi Muck A91 4x4 plus “New Design Line” from FM-Modellbau and a set of three excavation buckets from BSB Models that fit the JCB 3CX from Motorart.

Remo’s old Iron


Translation of pages 26-27

by Albert Schmid

The Power Shovel Company in Michigan has been making

construction machines since the mid 40s, concentrating more and more on wheeled loaders. In 1953 the US conglomerate Clark acqui-red the firm and founded the Mi-chigan Construction Machinery Division, headquartered in Benton Harbor, Michigan, USA. Only a year later the company delivered three different size wheeled loa-ders, the series A. The very robust construction led to the units being very well received, this in turn led to quickly increasing global sales. Among others, the largest wheeled loader at the time, the Michigan 675 was built in 1970. The Clark Michigan 125B was introduced at the end of the 70s for the first time and was produced with very few changes for almost ten years. A V6 engine from GM producing 240hp or a Cummins Diesel engine producing 283hp were available as power options for the 19 ton arti-

culated loader. The loading capaci-ty depended on the shovel option, ranging from three to a maximum of four cubic metres.

In the spring of 1982, Clark Michigan’s European plant in Strasbourg gave Conrad a contract to build a 1:50 model of the machi-ne. The model makers from Kal-chreuth delivered the model in the same year, and set new standards for model makers in the 80s. Many and very small diameter hand rails had, until then, not been standard. Not to forget the, typical for the Michigan wheeled loaders lifting assembly with their twin arms. In between the arms the lifting and tipping cylinders are located, in-cluding the Z-kinematic.

Background information about model #2884 from Conrad inclu-ding how many were produced, could not be found.

Many thanks go out to const-ruction machine enthusiast Robby Bosch from Belgium. He continu-es to provide interesting answers for detailed enquiries.

Clark Michigan and Volvo worked together in a joint venture in 1985 to sell the Volvo wheeled loader under the Michigan label in the US. This was the beginning of the end for the Michigan name. As Volvo acquired the remaining sha-res from Clark and became a majo-rity share holder, the name Michi-gan disappeared from the market.

Eye Candy

Michigan 125BThe name Michigan stands not only for a fe-

deral state in the northern part of the US, but

also for a range of innovative wheeled loaders

manufactured in the USA.



Tommy, thesmall bull dozer

By Thomas Wild, published by Novum Verlag, 70 pages, 21.5 x 13.5 Centimetres with color illustrations from Sabine Hajostek.ISBN 978-3-85022-243-3

Thomas Wilk has en-deavoured to awaken the interest in construction machines among young readers and has been suc-cessful with this children’s book. Tommy, the small but green, bull dozer ma-kes friends with an old oak tree. A symbiotic re-

New books

Steel Giants

By Marek A. Stankowski, pu-blished by Libra. 180 pages, 24 x 29 Centimetres. Almost all pictures are in color, hard back cover, all text in English. ISBN 978-83-89183-63-7

The book covers the span from the beginning of the HSW Huta Stalo-wa in Poland and what was produced there, with many pictures from the founding time up until the licensed production from the IHC construc-tion machine program. Up to date, fascinating

lationship grows between them, and when Tommy grows up and transforms in to a large size yellow bull dozer, he realizes that the most important things in life are being friends and being fair to one ano-ther, no matter if small or large, or, as in his case, yellow.

What does a bull dozer look like and what does it do? How does it work and how is it operated?

Page by page more and more information is re-vealed about the working day for Tommy, the small bull dozer (dw)

pictures show the TD15, TD20, TD 25 and, of course, the gigantic TD40. As well, there are the SB-85, SB-60 and SB-85PT pipe layers and the wheeled loaders of the 560B, C, E, Extra and 555B. C Extra are shown from all around the globe with the many different attachments, like power rakes, rippers, coal bla-des and wood forks. The machines are still wor-king today in all kind of temperature extremes from -40 below in Siberia to the desert heat in Ara-bia. (tw)

Impressum

U1-publishing GmbHAllmendstrasse 39CH-3014 Bern+41 (0)31 301 74 [email protected]

Redaktion Daniel Wietlisbach (dw)

Ständige freie MitarbeiterCarsten Bengs (cb), Robert Bretscher, Urs Peyer (up), Albert Schmid, Remo Stoll, Fredy Tschumi (ft), Thomas Wilk (tw)

English translationDaniel von Kaenel, Canada, Steven Downes, UK

Druck D+L Printpartner GmbH, D-46395 Bocholt

Erscheinungsweise / BezugBaggermodelle erscheint alle zwei Monate - 6 Ausga-ben pro Jahr. Bezug ausschliesslich über Abonnemente und den Fachhandel.Das Jahresabo kostet CHF 64.– / € 39.– (Schweiz, Deutschland und Österreich) / € 45.– (übriges Europa) / € 49.– (ausserhalb Europas). Die Rechnungsstellung erfolgt für ein Jahr. Schriftliche Kündigung spätestens acht Wochen vor Ablauf des Abonnements, ansonsten erfolgt automatische Verlängerung für ein weiteres Bezugsjahr.Preis Einzelheft Fr. 12.50 / € 7.90 (CH, D, A) / € 8.90 (übriges Europa) / € 9.90 (ausserhalb Europas).

BankverbindungSchweiz: PC-Konto 60-155685-9Deutschland: Postbank LeipzigKonto 332 304 903, BLZ 860 100 90

Copyright Nachdruck, Reproduktion oder sonstige Vervielfältigung – auch auszugsweise und auf elektro-nischen Datenträgern – nur mit schriftlicher Genehmi-gung des Verlags. Namentlich gekennzeichnete Artikel geben nicht die Meinung der Redaktion wieder.

Haftung Sämtliche Angaben (technische und sonstige Daten, Preise, Namen, Termine u.ä.) ohne Gewähr.

ISSN 1663-764X

BAGGERMODELLE




Together with its pile driver and drilling attachment, the Lieb-

herr LRB 255 is the second largest machine in the LRB series, weig-hing in at a 90 t operating weight.

The MAN D 2842 LE engine gives the machine a remarkable 670 kW (911hp) providing it with sufficient power reserve to avoid having to attach supplementary power packs for the operation of the attachments. The NZG model is the largest model for now in the color scheme of the Oldenburg group firm “Ludwig Freytag” and is also the first one available in the open market. Formerly only two versions of the Mercedes Sprin-ter (1:43) scale, the Atlas AR 80, Liebherr A314 and the Terex TC50 were available under the name of and directly from Ludwig Freytag.

The LRB 255 is almost complete when it is unpacked; only the pile driver has to be attached. When checking all measurements against the prototype, no faults are found.

Upper Carriage and Chassis

The model of the chassis is per-fectly executed. Both drives tele-scope, just as in the prototype and the triple grouser plates are very nicely done. The tracks are put under suspension using a spring. Unfortunately this is too rigid and the tracks are hard to move

by hand. Supporting and guiding dolly wheels are functional. They and the guiding protection skirt are modeled correctly. The upper carri-age has the prototypical three win-ches. These can be operated when the service hatch is open and are controlled with the keys that come with the model. This feature allows ambitious modellers to modify the machine into a crane as illustrated in the accompanying Liebherr leaf-let. The housing of the upper car-riage is highly detailed; nothing is missing, from the exhaust stack to window wipers and antennas.

Work equipment

The pile driving shaft has a length of 21 Metres and can be extended with additional pieces of 3 Metres to a total of 30 Metres. The model has a shaft of 24 Metres length and is in one piece but the extension piece cannot be seen on the model. As in the prototype, the pile driver shaft can be turned 90° to the left and to the right and can be inclined up to 1:6 forward and 1:3 back-wards, and 2.8° right or left. Des-pite the flexibility of the design the

Liebherr LRB 255 from NZG in 1:50 scale

Rhapsody in blue!The recent release of the LRB 255 in the at-

tractive paint scheme of the firm of “Ludwig

Freytag” is reason enough to have a closer

look at this model.

attachment is very nicely detailed and no oversized or visible bolts detract from positive look. On the top end of the driver shaft there is a functioning winch for the auxiliary jib with a crane hook and the mock up for a rope extension system. All motors are equipped with flexible supply lines.

The 40VM high frequency pile driving unit (with variable move-ment) can be mounted, prototypi-cally, directly on the driver’s shaft. The top loop is inserted on the shaft and bolted underneath. The pile driving unit is modeled somewhat simplified and would look better if it had some additional drilled holes indicated. The adjustable doub-le clamp that holds the sheet wall segments is very nicely sculpted. The paint job and lettering are of the expected high quality. Heavy duty transport collectors will be happy to know that the unit can be put down in to transport mode although without being able to dis-mantle the counter weight.

Without a doubt, the LRB255 is one of the best civil enginee-ring construction machine models around, in any color.




The TH550 is an articulated dump truck for demanding

underground operating conditions and has a capacity of 50 Tonnes. Fully loaded with 20 cubic metres, it tips the scales at a total weight of almost 86 Tonnes. Its maxi-mum speed of 32 km/h is reached when the seventh gear is engaged and the six cylinder Volvo TAD-1660VE engine produces 551 hp. The space-saving low construction design gives it the squat look of underground machines.

The model was seen for the first time at the 2010 Bauma trade fair in Munich on the stand of the con-struction machine manufacturer from Finland. The prototype model from Conrad was on a diorama de-picting underground construction activities. The model conveys the feeling of high quality, as expected from Conrad and is made most-ly of metal and functions like the real thing. It has some remarkable details and the measurements are spot on when compared to the pro-totype.

Front unit

When empty, three quarters of the weight of the prototype rests

on the front unit. Accordingly, the unit conveys the massive look of the real thing. The axle is oscilla-ting and the wheel rims are engra-ved in high detail. When it comes to the radiator grill, Conrad shows what can be achieved with modern plastic injection moulding. The slotted sections are very thin and the whole assembly can be opened to show off the two fans of the coo-ling system.

On the right side, a further coo-ling system is modeled very con-vincingly. The mesh covers over the air filtration system are very fine metal stampings and could be made to look even more realistic by painting them in a flat black color.

A bent chrome exhaust pipe co-mes out of the engine compartment and goes into the air filter and then two exhaust pipes exit from there. The etched protection grille over the air filter unit is especially nice. The cab has full interior detailing.

Sandvick TH550 from Conrad

Underground Truck

The Sandvick TH550 is the ideal companion to

the LH621 underground loader from the same

maker. We took the new dump truck from Con-

rad and put it under the magnifying glass.

The rubber gaskets are printed on the window material which is mounted on the back of the win-dow openings. The rear window is protected by a fine plastic grille and in a small recess in front of the ca-bin is mounted a fire extinguisher as on the prototype. The few hand-rails on the model are made from plastic and two rear view mirrors are packaged with the model for the collector to add. The articula-tion guidance system is controlled with two hydraulic cylinders.

Rear Unit

There are six flexible hydraulic and supply lines that connect to the rear unit. The drive shaft is modeled completely all the way to the rear axle differential. As per the prototype, the axle is fixed and does not move. There are no exten-sions for the lines to the guiding or dumping hydraulic cylinders. The



skip of the truck is very well exe-cuted. The functioning safety sup-port is there and also not forgotten is the grab rail on the left side. As per usual, the paint finish and let-tering are very good, although the paint on the hood for our sample was applied rather heavily. Thanks to the great engraving job on it, it does not detract from the total

Exclusive for Sandvik

The model was released in a limited, exclusive series of 500 with light green hand rails and steps. The dumper model is only available from the Sandvik-Shop:www3pr.se/scalemodelshop/

impression. The model has been produced in a small series of only 500 pieces for dealers’ shelves and without doubt will be sold out in short order.




Resin is a highly controversial material. On the one side it is

possible to use it to make models that are otherwise unobtainable price wise. On the other side, coll-ectors love the feel of metal and prefer models from this material to grace their display cabinets. What is resin, and how can it be used in model making? We found the answers to this after a conversation with Marcus Langer (Langer Mo-dellbau – MLM, master model de-veloper and partner in Refo-Tech).

What is Resin?

Resin is polyurethane; it contains the filler Polypol and the harde-ner Isocyanath and is, putting it in laymen’s terms, a two component epoxy. Pouring resin moulds is a cost effective way to produce models in small series from 10 to 100 models. After 100 pieces the use of white metal is the better choice price wise. Only after a series reaches the 1000 piece limit, the die-casting process, so much favoured by the collector, becomes the most price effective. All three techniques can achieve the same level of detail in their proces-ses. For the mould making process in resin pouring, a so called “Ur-mo-del” is made, preferably from sty-rene profiles. MLM and Refo-Tech use a process for this called Stereo-

lithographie, a technique used in the design process of car manufacturers. This allows for a discrepancy tole-rance of 0.1 Millimetres.

A silicon mould is made from the “Ur-model”. This mould has two openings, one to pour in the resin and one to let the excess air escape. The preparation time for a mould can take, depending on the degree of difficulty, up to one hour. The hardening process, after a re-sin pour, takes only 20-30 minutes. During this process, the tempera-ture in the mould reaches values between 70 and 90 degrees Celsi-us. It is almost impossible to avo-id air bubbles in this process. It is however, very important that these are cleanly filled by the maker. For this purpose Cyannolit is an ideal compound because it contains Iso-cyanath, the hardener contained in the resin formula. After pouring 20 to 30 parts, the silicon moulds are worn out and have to be replaced. The complaint that resin is britt-

le and breaks easily is not correct says Marcus Langer. Pure resin is very stable. Unfortunately some manufacturers mix in color which decreases the quality and increases the brittleness.

A big problem common to most resin models seems to be the slop-py or loose packaging. It is un-fortunate that broken off parts are found loose in the box when ope-ning it. For this reason, EMD and Dan Models have chosen to inclu-de delicate detail parts in a small plastic bag for the modeller to add. The best packaged models at this time are offered by GMTS where nothing in the box can move. De-spite this, it is recommended to purchase a resin model from a dea-ler close at hand. All introduced manufacturers have an excellent replacement and repair service, but who wants to send a newly acqui-red model half way around the glo-be for repair, and have the hassle of filling out reams of paperwork?

All about resin

A reason for resin?There are a lot of highly detailed models availa-

ble in the market which are made out of resin.

This material has had some bad press in the

past, but we were able to have a talk with an

experienced model maker about resin and its

limits.



Please also be aware that these materials are toxic and when wor-king with resins it is recommended to work in a well ventilated area, wear face mask and gloves.

MLM/Refo-Tech

The co-operation of partners MLM and Refo-Tech have won praise among collectors and buil-ders of construction machines, mainly in 1:87 scale. Their kits reach a previously unknown preci-sion which is an important consi-deration if the model is to be fully functional. The Menzi Muck A91 model is proof of that. Since about a year ago, excavator attachments have been on offer. The toleran-ce measurements are about 0.05 Millimetres and are calculated in the making of the “Ur-model” so that all parts fit together perfectly. There are milled plastic parts and etchings in the kits as well. For the construction of these kits super glue, as previously mentioned, is recommended. One should always have this at hand in three viscosi-ties: liquid, gel and slow flowing. Two component epoxy glue is best if a long drying period is desired. Since MLM does not have any mould release compounds for their

resin casts, the kit parts do not re-quire cleaning before using. Despi-te this, the resin is resistant to nitro based thinners and lacquers.

It is recommended to spray the model with a base coat before painting using the usual under coat paint from a modeling store. Af-ter this is dry the remainder of the paint job can be undertaken using several thin layers of acrylic based paints, preferably applied with an air brush. (www.Langer-modell-bau.de)

EMD (previouslyknow as ATM)

The oldest and most well known maker of ready-to-use resin mo-dels in 1: 50 scale is EMD, located in the US. This firm was previous-ly known as ATM based in France.

The models consist usually of a chassis made out of white metal. If there are tracks, the segments are made from the same metal. Also in metal are: hydraulic cylinders, exhausts, rear view mirrors, hand rails axles and more. Tires are made from rubber. The models are assembled by hand and some mo-dels are available as kits. Series vary from 25 to 100 pieces.

(www.EMD-models.com)

GMTS

Although arriving on the scene just a short time ago the historic truck models from GMTS in 1:50 scale have been very well received. The models are well made, cleanly assembled and detailed with addi-tional etched and plastic parts. The etched radiator grilles and maker’s emblems are especially nice. Un-like earlier releases, the dumping bins are made to operate.

They have metal axles and the tires are made from rubber. The series vary from 300 to 500 pieces and about 150 have the same paint schemes applied. We are waiting in suspense for their first announced excavator model, the Krupp-Doll-berg D200. (www.gmts.de)

Dan Models

Dan Silvestru from Romania has a lot of experience producing mili-tary models in resin form.

He uses the material most con-sistently in his kits. Almost eve-rything is made from it, even the tires. However, the axles are metal. The detail parts such as hand rails contribute to make these models real jewels.

(www.miniatur-models.com)



by Thomas Wilk

Who hasn’t experienced the following scenario? After

searching for years after the long-desired and elusive “dream” model to fill the gap in one’s collection one has finally found it. Then, af-ter long negotiation over the price with the seller the sale is conclu-ded and the found treasure is on the way home. However, the first joy over the new acquisition turns soon to sorrow upon closer inspec-tion of the purchase. Some not-so-nice signs of aging, some chipped paint, other defects like a thick layer of dust, broken detail parts, missing detail parts and hand rails and lamps are discovered. What to do is the question.

The first question we have to answer is: should we leave the mo-del as is or can it be restored? If there are a great many scratches, nicks and chipped paint on the lar-ger surfaces of the model, for ex-ample the hood or body, roof and chassis, then it is not advisable to attempt to fix these.

If however, as on the Caterpillar D4 model from Gilson Riecke/CCM

(1:16 scale), the damage is mainly on corners and edges then it is possi-ble to attempt a restoration job.

Cleaning and repairing

The first step is to remove the top coat of dust. For this we can use pressurized air at a low setting and rinse the model quickly under lu-kewarm water. Care has to be ta-ken with the decals or slide trans-fers; these must not have contact with the running water for a pro-longed time, since they could, in a worst case scenario, be rubbed off or dissolve.

After the wash the model is dried very carefully with a soft linen cloth, pressurized air or an electric hair drier to avoid water spots if you live in an area place of high calcium content in the water. Missing parts can now be made to replace the ori-ginals and broken parts repaired as the case with the adjusting spindle for the shield on the tracked Cater-pillar D4. For this purpose we use a two component glue to re-glue the part to the original sites on the mo-del. After all repairs are completed, the restoration can begin.

Painting

Now comes the most important part of the process: we need to mix the correct matching color to re-paint the chipped parts of the mo-del. Only if the colors match exact-ly can the viewer no longer see the restored area.

Therefore it is important not to rush this step. As a precaution, first mix small amounts of the paint(s) to be used and let them dry. Then compare the dried, finished results with the model, on different parts of the model and ideally during daylight hours. Keep a record of which colors used and how they were mixed.

When you are satisfied with the result, the mixing of the color can begin. It is best to use a white pie-ce of paper or picture frame board as a palette. It is advantageous to mix the main color, in our case yel-low, several times before shading the main color with other colors, in our case red or orange. By adding black or white to the color mix, the paint becomes lighter or darker. To achieve a certain gloss factor it is recommended that the colors used

Restoring models

Oldies but GoldiesChipped paint and other damages can reduce

the joy of owning a model. But if you have the

know how, these minor flaws can be correc-

ted very easily.



be satin, semi-gloss or gloss. If this is not possible, some color brands have clear gloss lacquer that can be mixed into the paint to achieve the required results. Using a tooth pick, the pre-mixed paint is first applied to an area on the underside or in a hard-to-see place on the mo-del and, if it is not a perfect match, the color can now be adjusted until a perfect match is made.

Now all the small chipped places on the model can be touched up with the tooth pick method.

For larger areas the use of a fine brush is recommended. Always paint to the next corner or bend on the model as this is less obvious to the viewer than a spot of color on a large surface, especialy if the shade of the color is not a perfect match.

Final cleaning

After the model is completely dry, use a Q-tip and water to clean all nooks and crannies that are still

dirty or dusty. Use other Q-tips to dry off any liquid remaining.

For stubborn dirt or excessive paint a mild car wax product can be used. This can be applied with a Q-tip and a cloth. Use a soft li-nen cloth to remove all of the wax and the model gets a spotless “like new” look, as if it just left the fac-tory.



by Urs Peyer

As the lyrics of a popular song go, “It never rains in southern

California”. This plus the fact of the rapidly increasing population in that state, is the main reason for finding the greatest accumulation of Caterpillar 657 Scrapers any-where. Because of the ideal frame construction applied, these earth moving machines are among the most efficient in their class.

In 1987 we watched Scrapers moving earth on a large construc-tion site for the first time. The units used were not the 657s but “only” 637s and a rarer 639D twin engine elevator scraper with 700hp output and a capacity of 26 cubic metres.

Unforgettable Sound

In 1996 I had the opportunity to photograph a Cat 657E twin motor unit at a job site somewhere south of Los Angeles. The motors which produced almost 1000hp made an unforgettable sound impression for

me. I remember the year 1998 es-pecially well as it was then I had my first opportunity to photograph a Cat 666 Scraper at work and was able to take the wheel of the unit and drive it around in a circles for a little while. Since the Scraper does not have an enclosed operator’s ca-bin, the feeling was akin to driving in a sandstorm. It was a unique experience for me. During the re-search for the book about the Cat D9 (released by Podszun Verlag) I got to know Eileen Grafton of Peterson Tractors in San Leandro. She organized the very first Scra-per tour on one of the many const-ruction sites around San Francisco in the spring of 2003. In the fall of 2004 I was standing once again at the front gate of Peterson Tractors. This time we were visiting a job site featuring earth moving work that made any other previously visited site look like a back yard sand box. 9000 cubic metres were moved, not daily, but hourly! The Winder-mere project was for the construc-tion of 30,000 single family houses

on a 5033 acre site. 7.5 Million Cu-bic metres of soil had to be moved. Independent Construction emplo-yed 125 construction machines for this task. 57 Caterpillar Scrapers were in action constantly assisted by D10R, D10T and D11R Cats. D8R and D8T were busy cleaning embankments. Several Cat 825G were compacting the never ending flow of fill. The “smaller” Scrapers used were single motored Cater-pillar 631D and twin engine pow-ered 637E. With a power output of 450hp and 700hp they were able to shift 23 Cubic metres of soil. The median back and forth trip on this site was 2.4 Kilometres. To avo-id line ups and congestion at the dumping and at the loading sites, the work was spread out over seve-ral spots on the large site. To assure that the loading of the larger Cater-pillar 651B Scrapers, capacity of 33.6 Cubic metres, was accomplis-hed in the most efficient way, they were assisted by pushers. The ma-chines used for this purpose were the D11R push dozers, producing

Scraper paradise California

Sun, sand and scrapersFor many enthusiasts they are among the most

popular construction machines. Urs Peyer is

among those that regularly “have to” visit the-

se machines for example in California to see

them in action.



770hp. Even though the Scrapers used where over 20 years old, they were in constant daily use.

657B and 657E

The main contingents of the Scraper fleet were the 657 model twin engine equipped Scrapers of the B and E series. The capacity of the machines remained unchanged at 33.6 Cubic metres. Equipped with a Cat 3412E diesel engine for the tractor unit and a Cat 3408E at the rear gives the 657E unit a total of 995hp of power. The tare weight of a push-pull unit is 71.4 tonnes. Despite a total weight of 120 tonnes fully loaded the 657E can reach a top speed of 50 km/h.

Two 657E units working together in a push-pull configuration have a

combined length of 36 metres and a produce almost 2000hp. It takes less than two minutes to load 70 Cubic metres of material.

The large Scraper fleets of Califor-nia proved to be an irresistible attrac-tion and so we visited the Bay Area again in 2005 and 2006. After seeing the older 666 series models in 2006 we were able to see the new 657G at work. The C18 engine in the tractor has a displacement of 18.1 litres and produces 447kW (600hp) of power. The C15 rear engine has a displace-

ment of 15.2 litres and a power out-put rated at 337kW (451hp). Loading capacity remains unchanged at 33.6 cubic metres. With a width of 4.34 metres and 9.95 metres wheel to wheel length, the 657G is an impres-sive sight.

2008 was the beginning of the world wide recession in the US. However, we lucked out and were able to view a large Scraper fleet at work moving 4 million cubic met-res of fill near Los Angeles. All lar-ge Scraper fleets were idle in 2009 and many firms, including Peter-son Tractors, stared bankruptcy in the eyes. In Eileen’s opinion, the tide turned in 2010 and the earth moving business was returning, but the quantity of earth moved was far from the amount moved before 2008.

YouTube

More about Scrapers in Ca-lifornia at www.youtube.com/baggermodelle



Late harvest fromthe Conexpo 2011

One of the best kept secrets and a publicity magnet at the exposition were the Caterpillar road trucks. In total there were four versions of the CT660 to be put under close scruti-ny. The configurations are dumper, concrete mixer, service truck and heavy load tractor unit.

As a power plant, the CT11 engi-ne with a displacement of 10.5 lit-res producing 330 hp and the CT13 engine producing 390hp and a dis-placement of 12.4 litres are availab-le. The trucks will roll out from the production line in Texas starting in July of this year.

Promised for a long time, and now here are the first of the B se-ries of the articulated dump trucks

from Caterpillar. The first models are 735B, 740B and 740 Ejector. The 740B with a loading capacity of 39.5 tonnes or 24 Cubic metres was admired. To supply the necessa-ry power, a C15 engine developing 489hp is on board.

John Deere surprised the public with their new series of articulated dump trucks. The first, and at the same time, largest truck shown in Las Vegas was the Deere 460E with a capacity of 46 sht (41.7 metric tonnes). The power plant used is the in-house produced engine with 13.5 Litres displacement. Until now, the articulated trucks offered by John Deere were produced by Bell. (up)

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