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FSAE Design Spec Sheet 2008
Competitors please replace the sample specification values in the table below with those appropriate for your vehicle and submit this to with your design report. This information will be reviewed by the design judges and may be
referred to during the design event.
--Please do not modify format of this sheet. Common formatting will help keep the judges happy!
--The sample values are fictional and should be used as a baseline for your designs.
Car No. 114
School SUNY-Buffalo
Dimensions Front Rear
Overall Length, Width, Height 106.5 Inches Overall Length, 52 Inches Wide, 46.5 Inches High
Wheelbase 64 Inches
Track 46 Inches 46 Inches
Weight with 150lb driver 220 (Estimated) 330 (Estimated)
Suspension Parameters Front Rear
Suspension Type Double Unequal Length A-Arm, Pull Rod Actuated Satchell Linked Solid Rear Axle, Pull Rod Actuated
Spring and Damper Spring and Damper
Tire Size and Compound Type Hoosier 18x6-10 R25B Hoosier 18x6-10 R25B
Wheels Kiezer 10x6, 5x1 Offset, 27 Tooth Splined Centers Kiezer 10x6, 5x1 Offset, 27 Tooth Splined Centers
Design ride height (chassis to ground) 4.5 Inches 2.5 Inches
Center of Gravity Design Height 12.0 Inches Above Ground
Suspension design travel 1.25 Inches Jounce / 1.25 Inches Rebound 1.25 Inches Jounce / 1.25 Inches Rebound
Wheel rate (chassis to wheel center) 100 Lbs / Inch 125 Lbs / Inch
Roll rate (chassis to wheel center) 1.3 deg/g
Sprung mass natural frequency 4.00 Hz (Estimated) 3.66 Hz (Estimated)
Jounce Damping Not Tested as of February Not Tested as of February
Rebound Damping Not Tested as of February Not Tested as of February
Motion ratio / type 1:1 / Linear 1:1 / Linear (Sight Progressive Rate on Compression
Due to Birdcage Clocking)
Camber coefficient in bump (Deg / Inch) 0.82 Deg / Inch 0 Deg / Inch (Solid Axle)
Camber coefficient in roll (Deg / Deg) 0.70 Deg / Deg -1 Deg / Deg (Solid Axle)
Static Toe and adjustment method 0.1 Deg Toe Out, Tie Rods with Male Rod Ends 0 Deg Toe In / Out, No Adjustment (Solid Axle)
Static camber and adjustment method -1.5 Deg, Interlocking Teeth on Upright to Balljoint 0 Deg, No Adjustment (Solid Axle)
Interface, + / - 3 Deg Range @ 0.5 Deg Increments
Front Caster and adjustment method 0 Deg, Interlocking Teeth on A-Arm to Upper / Lower 0 Deg, No Adjustment (Solid Axle)
Balljoint Clevis Interface, + / - 3 Deg Range @ 0.5 Deg
Increments
Front Kingpin Axis 0 Deg N/A
Kingpin offset and trail 2 Inches offset, 0 Inches Trail N/A
Static Ackermann and adjustment method Parallel Steer, No Adjustment N/A
Anti dive / Anti Squat 0% / 0% 0% / 4%
Roll center position static 1.4 Inches Above Ground 4.5 Inches Above Ground
Roll center position at 1g lateral acc 1.4 Inches Above Ground, 0.5 Inches Lateral in 4.5 Inches Above Ground, 0.125 Inches Toward Laden
Direction of Turn Side
Steer location, Gear ratio, Steer Arm Length Rear Steer, 1.5 Inches Above Lower A-Arm Mounts and 1.5 Inches Behind Front Wheel Centerline, 12:1 Ratio
Stiletto Rack and Pinion, 2.5 Inches Steering Arm, 6:1 Wheel Rate, Parallel Steer
Brake System / Hub & Axle Front Rear
Rotors Mild Steel, Floating, 7.25 Inch Diameter, 0.1875 Mild Steel, Floating, 7.25 Inch Diameter, 0.1875
Inches thick (LF, RF) Inches Thick (RR)
Master Cylinder Tilton 76 Series, 0.625 Inch Bore Front and Rear, Tilton Balance Bar
Calipers Four Piston, 1.25 Inch Pistons, Fixed Caliper, GP320 Four Piston, 1.25 Inch Pistons, Fixed Caliper, GP320
Wilwood (LF, RF) Wilwood (RR)
Hub Bearings D60102RS Double Row Ball Bearing with Integral D60102RS Double Row Ball Bearing with Integral
Seals (One per Upright) Seals (One per Birdcage)
Upright Assembly CNC 7075-T6 Aluminum "Hubright" CNC 7075-T6 Aluminum "Hubright"
Axle type, size, and material 600 cc Sprint Car Solid Axle Stubs, 9 Inches Long, 600 cc Sprint Car Solid Axle, 53 Inches Long, 1.75
1.75 Inch OD x 1 Inch ID, 7075-T6 Aluminum, 27 Inch OD x 1 Inch ID, 7075-T6 Aluminum, 27 Tooth
Tooth Involute Spline, Safety Pin Holes Involute Spline, Safety Pin Holes
Ergonomics
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Driver Size Adjustments Fixed Steering Wheel and pedals. Small, Medium, and Large Interchangeable Upper and Lower Seat Foams
Seat (materials, padding) Expanded Foam Lower and Upper Seat Forms. Small, Medium, and Large Sizes. Attached to Lower and Upper
Firewall by Velcro. Padding Consists of One Layer High Density Foam Covered by Waterproof Vinyl
Driver Visibility (angle of side view, mirrors?) 180 Degree Side Visibility, 2 Inch x 4Inch Side Mrrors Mounted to Front Nose Cone
Shift Actuator (type, location) N/A
Clutch Actuator (type, location) N/A
Instrumentation None
Frame
Frame Construction Tubular Space Frame
Material 4130-N
Joining method and material GTAW Welding, ER80S-D2 Filler Rod
Targets (Torsional Stiffness or other) 1200 ft-lb/deg
Torsional stiffness and validation method 1040 ft-lb/deg, validated through physical testing and ANSYS beam element analysis
Bare frame weight with brackets and paint 75 Lbs
Crush zone material Alcore Dura-Cell 5056 Aluminum Honeycomb (PAA - 5.2 - 1/4 - 0/0025 - N - E)
Crush zone length 8.6 Inches
Crush zone energy capacity Physical Test:158,640 Inch-Lbs (17,924 Joules)
Powertrain
Manufacture / Model Briggs & Stratton / 3814470075
Bore / Stroke / Cylinders / Displacement 75.5mm Bore / 66mm Stroke / 2 cylinders / 590cc
Compression ratio 10:01
Induction Naturally Aspirated
Throttle Body / Mechanism 1.375 Inch / Butterfly Throttle Body
Fuel Type 93 Octane
Max Power design RPM 5500 (Estimated)
Max Torque design RPM 3500 (Estimated)
Min RPM for 80% max torque 2800 (Estimated)
Fuel System (manf'r, and type) Student Designed/Built, Megasquirt Sequential Fuel Injection, Speed Density , Open Loop
Fuel System Sensors (used in fuel mapping) Air Temp, TPS, MAP, Baro, Cam and Crank VR Sensors
Fuel Pressure 43.5 PSI Regulated, Walbro Returnless Fuel Pump (PFA-32C)
Injector location 4.0 inches Before Intake Port, Pointing into Intake Stream
Intake Plenum volume and runner length(s) 115 Cubic Inch / 14.5" Primaries
Exhaust header design Stepped Primary Tube Design, 304 Stainless Steel, 2 into 1 Collector, O2 Sensor Mounted in Collector
Effective Exhaust runner length 29 Inches Long, 14.5 Inches of 1.25x0.065, 14.5 Inches of 1.375x0.065
Ignition System Student Designed/Built, Megasquirt Sequential Fuel Injection, Denso 580 Ignition Coils
Ignition Timing Not Tested as of February
Oiling System (wet/dry sump, mods) Stock Wet Sump, Gerotor Oil Pump and Stock Forced Air Oil Cooler / Filter Assembly
Coolant System and Radiator location Stock Forced Air Cooled, Plastic Squirrel Cage Blower and Steel Air Shrouds
Fuel Tank Location, Type Chassis Mounted Between Firewall and Engine, Centerline of Car, 1 Gallon Welded 6061-T56 Tank with
Welded 6061-T56 Filler Neck, Fuel Safe Filler Cap, JAZ Fuel Vent
Muffler Coast Fabrication 2 Inch Inlet/Outlet Perforated Core, Glasmat Packing, 150 Cubic Inch Volume
Other significant engine modifications 628cc Stock Engine De-Stroked to 590cc Using 16hp Crankshaft, Billet 7075-T6 Connecting Rods, Forged
Aluminum Aries Pistons, Higher Duration Camshaft, 6061-T56 Pushrods with Steel Tips, Billet 6061-T56
Roller Tip Rockers, Larger Titanium Valves , Ported Heads, Thermistor Type CHT Sensors Mounted Under Spark
Plugs, Oil Pressure / Temperature Sensors, Cam and Crank VR sensor, Swain Tech Coatings, ARP Fasteners,
Cometic Steel Head gaskets, Lightened Flywheel
Drivetrain
Drive Type Gaged Engineering Dominator GX7 CVT , DID 428NZ2 Chain Final Drive
Differential Type N/A
Final Drive Ratio 4:1
Vehicle Speed @ max power (design) rpm 12:1 Low Gear, 4:1 High Gear, Geared for 80 MPH @ High Gear @ 6000 RPM
1st gear N/A
2nd gear N/A
3rd gear N/A
4th gear N/A
5th gear N/A
6th gear N/A
Half shaft size and material N/A
Joint type N/A
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Aerodynamics (if applicable)
Front Wing (lift/drag coef., material, weight) N/A
Rear Wing (lift/drag coef., material, weight) N/A
Undertray (downforce/speed) N/A
Wing mounting N/A
Optional Information
Body Work 2 Layer Fiberglass Attached with Dzus Self Ejecting Buttons, One Nose Cone and Two Side Panels
Rear Suspension Integral Part of Side Impact Crash Structure Allows for Clever Intake Manifold Design, Symmetric About
Lateral Centerline
Front Suspension Symmetric About Front Wheel Centerline
Roll Hoop Intergration Uses Two Roll Hoop Structure Instead of the Traditional Three Hoop, Unusually Rear Biased Driver
Duplication of Parts All suspension Mounts Identical, All Suspension Bearings Identical, Same 0.25 Inch Bolts Used at Each
Suspension Joint, All Four Upright/Birdcage Center Sections Identical, Symmetrical Rear and Front
Suspension Design (i.e. Left Fits Right, Right Fits Left)
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