fsae summary plan
TRANSCRIPT
2009 Florida Tech Formula TeamSummary and Plan Presentation
September 10, 2008
Team Organization
Team Lead
Kyle Meier
Chassis
Keith Reihl
Kyle Meier
Suspension and Braking
Jeff Grubesich
Guido Carelli
Drivetrain
Mert Candarli
Joachim Agou
Joel Zahlan
Talal Almoayed
Driver Interface
Earle Jackson
Sebastien Griveau
Formula SAE Competition
Challenges students to design, build and compete small formula style race carsAssume the car is being made for a design firmVehicles need to be very high performanceCars are judged in static and dynamic eventsCars are expected to be designed and built with good engineering practice
Important Team Deadlines
Registration with FIT by September 12, 2008
Registration for FSAE Michigan begins October 6, 2008
Team members must be SAE Members in order to register for competition
Chassis Sub‐team
Clemson University Chassis DesignKeith ReihlKyle Meier
Chassis Sub‐team
Comply with all rules and specs for the chassis
Design for a chassis weight of 50 lbs.
Design for the minimum wheelbase of 60 in.
Obtain a torsionalrigidity greater than 3000 lb/degree
Chassis Sub‐team
Design concept started to be modeled in Solidworks
Cockpit template, motor, 95 percentile male and wheels modeled
Dimensions of cockpit, leg tunnel given by FSAE rules
Chassis Sub‐team Plan
•Chassis modeling will be completed by October 15, 2008•Prototype of chassis will be completed by October 26, 2008•Building of the chassis will commence on October 27, 2008•Rolling Chassis will be expected on December 1, 2008
Suspension Sub‐team
Cane Creek Shock Absorber
Jeff GrubesichGuido Carelli
Progress Summary
Engine size decided, weight and force calculations are viable
Opted for standard double A design
Push rod actuated coil‐overs
Variable dampers
Pictures from 2007 FIT REV car
Future PlansCreate Pro‐E model for suspension
Combine with chassis model
Static analysis on Ansys of full frame
Dynamic analysis on ADAMS
New Ansys analysis with dynamic loads
Build suspension arms
Purchase dampers
Install and perform
extensive testing
Suspension Diagram
Brakes & Tires
Choose wheel sizeStandard disc brakesConsider weight and price
Goodyear Dry Tires Goodyear Wet Tires Dynalite Single FloaterCaliper
DrivetrainSub‐team
Clemson University Drive Train Assembly
Mert CandarliJacob AllenbaughJoachim AgouJoel ZahlanTalal Almoayed
Torsen T‐1 Traction Differential
The TORque SENsingT‐1 Differential is ideally suited for rear, center, and all‐wheel drive applications.Consists of internal gearing and washers to transfer power from the engine to the wheels
Torsen T-1 Differential
Torsen T‐1 Traction Differential
T‐1 can handle 5,200 N*m of sprocket (or ring gear) torque.
The Torsen differential is simply a torque multiplier that works through the use of friction generated by thrust forces from the internal gearing.
TBR or Torque Bias Ratio, represents the "locking effect" of the differential.
Indicated how much torque is sent to each wheel with more traction Torsen T-1 Differential
Engine Choices
Three options for the formula car
The smallest and lightest Honda CRf450x, one of the most popular motors in dirt bikes for the past 5 years.
The most powerful Yamaha F‐R6 or Honda600CBR, heavier than the rest
ApriliaV‐Twin 550, very good power to weight ratio, but expensive and rare
We choose the 450cc engine due to its lightweight and ease of tuning
Turbocharging or supercharging of the motor is still undecided
Yamaha 600 Aprilia 550 Honda 450
HP 120 70 48.5
Weight 120 72 70
Yamaha R6
Engine Specs
599cc
4 cylinder
16 Valve
Compressio: 12:4:1
120Bhp
Fuel Injected
Weight‐120lb
Yamaha R6 Engine
Aprilla SXV 550Engine Specs
549cc V‐twin
4 Valves
12:1
Fuel Injection
70Bhp
Weight‐72lb
Aprilia SXV 550 Engine
Honda CRF450x
Engine Specs• 449cc• Single Cylinder• Compression:
12:0:1• 4 Valve• Weight 70Ib• 48.5Bhp• 46.8Nm• Carborator
Honda CRF450x Engine
Garrett GT12
•Garrett GT12 has ranges of:
•Horsepower: 50‐150Hp
•Displacement: 0.4L‐1.2L
•More power potential, but decreased fuel economy
•Tuning will become more difficult
•May not be efficient for a one cylinder engine
Garrett GT12 Turbo Assembly
DrivetrainGantt Chart
Driver Interface Sub‐team
Earle Jackson
SebastienGriveau
Wilwood Steering Rack [6]
Overview of Progress
•Research top teams designs
•Reviewed the rulebook
• Scanned machine shop for useful parts
• Created a rough list of parts to buy/fabricate
Tilton Pedal Assembly
Design Plan
Communicate with previous teams about past problemsReuse as much as possible to keep costs downKeep everything lightweightMinimize cockpit clutterComply with all rules and regulations
Preliminary Thoughts
Steering components available on side‐mount carStock cluster for 600cc inexpensive and accurateMotec engine management available in the machine shopSeats, steering wheel, shifter can all be fabricatedEngine kill switch
What We’ll Need to Buy
Race gear (Helmet, Suit, Gloves, etc.)Safety harnessesPedals (If not available from side‐mount car)Other gauges
Racepak Digital Display
Driver Interface Gantt Chart
Questions?