FSAE Design Spec Sheet
2011
-- Note: SI units
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 not be used as the baseline for your designs.
Car No.
247
School
Jetison Academy of Applied Engineering
Dimensions Overall Length, Width, Height
Front Rear 2338mm long, 1476mm wide, 1404mm high
Wheelbase
1676mm
Track W idth
1410 mm
1475 mm
W eight with 68kg driver
121 kg
138 kg
Suspension Parameters
Front
Rear
Suspension Type
Double unequal length A-Arm. Pu Push rod Double unequal length A-Arm. Direct actuated horizontally oriented spring and acting spring and damper damper 20x6.5-13 R25A Hoosier 20x8-13 R25A Hoosier 8 inch wide, 3 pc Al Rim, 20mm neg. 9 inch wide, 1 pc car carbon, 34mm neg. 214 mm above ground (confirmed with testing) 32mm jounce/ 29 mm rebound 48mm jounce/ 36 mm rebound 38 N/mm 48 N/mm 3.14 degrees per g 1.53 Hz 1.62 Hz 42% of critical damping at at X mm/sec 38 % of critical damping at X mm/sec 72% of critical damping at a t X mm/sec 68 % of critical damping at X mm/sec 0.91 / linear 0.82 / progressive rate 19.3 deg / m 32.5 deg / m 2.62 deg / deg 2.62 deg /deg -0.2 deg toe (toe out) 0.3 deg toe in -1.5 -1.5 deg deg,, adj. adj. via via shi shim m plat plates es on on A-ar A-arm m -0.5 -0.5 deg deg,, adj. adj. via via inb inboa oard rd rod rod end ends s 13 degr degree ees s nonnon-ad adju just stab able le 2 degrees non-adjustable 6mm offset, 3m 3mm trail 110% 110% non-a non-adjus djustab table le 0 -30% 34mm above ground 12mm above ground 30mm 30mm abov above e gro groun und, d, 154m 154mm m towa toward rd 5mm above ground, 280 mm toward unladen side laden side Front steer, , 25mm c-factor, 62mm steer arm
Tire Size and Compound Type Whe Wheels (width, con constructi ction) Center of Gravity Design Height Suspension design travel W heel rate (chassis to wheel center) Roll rate (chassis to wheel center) Sprung mass natural frequency Jounce Damping Rebound Damping Motion ratio / type Camber coefficient in bump (deg / m) Camber coefficient in roll (deg / deg) Static Toe Stat Static ic cam cambe berr and and adju adjust stme ment nt met metho hod d Fron Frontt Cast Caster er and and adju adjust stme ment nt meth method od Front Kingpin Axis Kingpin offset and trail Stati Static c Akerm Akermann ann and adjustm adjustment ent method method Anti dive / Anti Squat Squat Roll center position static Roll Roll cent center er posi positi tion on at 1g late latera rall acc acc Steer location, Gear ratio, Steer Arm Brake System / Hub & Axle Rotors Master Cylinder Calipers Hub Bearings Upright Assembly Axle type, size, and material material
Front Rear Floating, Cast Iron, hub mounted, 205mm Outboard, 260 mm dia x 10mm Carbon dia. vented ceramic Student Built 22mm bore front / 19mm bore rear with driver adjustable bias bar 48mm dia., Opposing piston, fixed mtg Dual piston,25mm dia., floating Tapered roller bearings. Separate spring Single 5205 dbl row ang contact bearing loaded rubber lip seal with integral seal CNC 7075-Al, integral caliper mount W eldment, 4130 sheet, heat treated, shot peened Fixed spindle, 28mm dia, 4130 steel Rotating axle, 52mm ODx 2.5mm wall, normalized 4340 steel, RC 40
Ergonomics Driver Size Adjustments Seat (materials, padding) Driver Visibility (angle of side view,
Fixed seat and steering wheel. Pedals adjust fore and aft 75mm from center position Wet lay-up carbon, padded lumber and knee protection, 80mm foam head support 210 degree side visibility, 60 x 100mm side mirrors rigidly mounted to nose
Shift Actuator (type, location) Clutch Actuator (type, location) Instrumentation
Manually actuated lever/ linkage, right side cockpit mount Foot pedal, cable actuated Dash mounted temp/oil gauge, 5 LED tach/shift light
Frame 200773808.xls.ms_office V1
1
1/6/2014
Frame Construction Material Joining method and material Targets (Torsional Stiffness or other) Torsional stiffness and validation method Bare frame weight with brackets and paint Crush zone material Crush zone length Crush zone energy capacity
Frt and rear Tubular space frame / AL Monocoque mid section 1020 and 4130 steel round tubing .5" to 1.125" dia / 2024-t3 .031" thk Al sheet Fusion welding ER70-S6 filler / 2 part room temp cure epoxy 6000 N-m / deg 6500 N-m/deg CAE beam model, 5700 N-m/deg physical test 32 kg closed cell PVC, aramid composite casing 150mm FEA -- 8200 Joules, physical test -- 9680 Joules
Powertrain Manufacture / Model Yamagucci ZAZ-6 4 cylinder, Cyl 3 designed to miss-fire every 8th revolution Bore / Stroke / Cylinders / Displacement 58mm bore / 28mm stroke / 3.75 cylinder / 301 cc Compression ratio 11.6:1 Induction (natural or forced, intercooled) Rotary screw supercharger and Garret T03 turbocharger Throttle Body / Mechanism 45mm, butter-ball throttle actuation Fuel Type E-85 ethanol Max Power design RPM 18000 Max Torque design RPM 16500 Min RPM for 80% max torque 14000 Fuel System (manf'r, and type) Student des/built ,fuel injection, sequential Fuel System Sensors (used in fuel mapping Air Temp, Coolant Temp, Throttle Pos, Crank Pos,……. Fuel Pressure 4.5 bar Injector location 85 mm before and pointing toward intake valve Intake Plenum volume and runner length(s) 1046 cc, 120mm runners Exhaust header design 4-2-1 equal length (+/- 20mm), 50mm collector Effective Exhaust runner length 450mm Ignition System Student des/built ,dual coils, lost spark system Ignition Timing 3-D map, RPM and Throttle position, 23 deg BTDC max advance Oiling System (wet/dry sump, mods) belt driven dry sump, 2 scavenge / 1 pressure pump Coolant System and Radiator location Twin side pod mounted radiators with thermostatic controlled electric fans Fuel Tank Location, Type Floor mounted between firewall and engine, aluminum tank w/fuel bladder Muffler Single glass pack muffler, 2.5 liter volume Other significant engine modifications Height of engine reduced by 60mm with removal of oil sump volume Drivetrain Drive Type Differential Type Final Drive Ratio Vehicle Speed @ max power (design) rpm 1st gear 2nd gear 3rd gear 4th gear 5th gear 6th gear Half shaft size and material Joint type
30mm x 10mm wooden cogged belt clutch pack limited slip, 100Nm preload, 1.4 bias ratio 2.52 18 mph 35 mph 54 mph 72 mph 91 mph removed from trans 30mm OD solid 8620 steel case hardened to Rc 60 1.3mm deep,Rc 28 core TRE mini Tripod- left, Honda Scammer ATV- right
Aerodynamics (if applicable) Type / Configuration Front-Main Element fixed, adj. multi-element flaps, Rear 3 Element, undertray Total Downforce and Drag ( scale using incl. Downforce =212 N, Drag =180 N Aero Balance (% Front, at v=115kph) 45 % front Noteable Features (unsprung mounted, acti lizard skin over hand carved oak structure Optional Information Body Work? Special Bit A? Special Bit B?
200773808.xls.ms_office V1
3 piece carbon latex body, 2.6 kg complete w/ paint GPS with 'Cartman' voice navigation "Dukes of Hazzard" paint scheme
2
1/6/2014
