2014 Baja Design Spec Sheet

Design Spec Sheet FSAE
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  2014 Car No.School DimensionsFrontRear  Overall Length, Width, HeightWheelbaseTrack Width55 (1397 mm)50 (1270 mm)Curb Weight (full of fluids)Weight Bias with 150 lb driver seated53%47%Weight with 150 lb driver seated312 lbs (142 kg)274 lbs (125 kg) Suspension ParametersFrontRear  Suspension TypeDual unequal length A-Arm, Fox Podium X Coil over shocks, Adj. Roll bar.Dual unequal length A-Arm, Fox Podium X Coil over shocksTire Size and Type23x8-10 ITP Mudlite23x8-10 ITP MudliteWheels (width, construction)6 wide, Forged Al, 4/2 offset7 wide, Forged Al, 4/3 offsetCenter of Gravity Design HeightVertical Wheel Travel (over the travel)6 (152 mm) jounce/ 4 (102 mm) rebound7 (178 mm) jounce/ 5 (127 mm) reboundRecessional Wheel travel (over the travel)2 (50.8mm)0 (0mm)Total track change (over the travel)3.5 (88.9mm)4 (101.6mm)Wheel rate (chassis to wheel center) 25 lbs/in (4.8 N/mm)43.2 lbs/in (7.6 N/mm)Spring Rate100 lbs/in (17.5 N/mm)120 lbs/in (21 N/mm)Motion ratio / type0.5 / linear0.6 average 0.4-0.7 actual progressive rateRoll rate (chassis to wheel center)Sprung mass natural frequency1.2 Hz1.5 HzType of Jounce DampingHigh and low speed adjustableHigh and low speed adjustableType of Rebound DampingLow Speed adjustableFixedRoll Camber (deg / deg)2.62 deg / deg2.62 deg /degStatic Toe-0.2 deg toe (toe out)0.3 deg toe inToe change (over the travel)1 deg 0 deg Static camber and adjustment method-1.5 deg, adj. via outboard rod end on A-arm-0.5 deg, adj. via inboard rod endsCamber Change (over the travel)6 degrees4 degreesStatic Caster Angle9 degrees, adjustable0 degrees, non-adjustableCaster Change (over the travel)6 degrees 0 degreesKinematic Trail2 (50.8mm)0Static Kingpin Inclination Angle10 degrees non-adjustableNo KingpinStatic Kingpin Offset2 (50.8mm)No KingpinStatic Scrub Radius-1 (-25.4mm)No KingpinStatic Percent Ackermann60%NonePercent Anti dive / Anti Squat40% Anti dive30% Anti SquatStatic Roll Center Position12 (305mm) above ground13 (330mm) above groundNumber of steering wheel turns lock to lockOutside Turn Radius15' (4.57 m) to right16'(4.88 m) to the left Brake System / Hub & AxleFrontRear  RotorsOutboard, Fixed, 1018 Steel, 7 (178mm) dia. X .125 (3.2mm)Inboard, Single Brake, Fixed, 7 (178mm) dia. X .125 (3.2mm)Master Cylinder(s)CalipersWillwood, Single Piston, 2 (50.8mm) dia., FloatingStudent Built, Dual Piston, 1 (25.4 mm) dia., FloatingHub BearingsTapered roller bearings. Separate spring loaded rubber lip sealSingle 5205 dbl row ang contact bearing with integral seal --Please do not modify the format of this sheet. Common formatting will help keep the judges happy! Baja SAE Design Spec Sheet 4.14 degrees per g University of Baja SAESAMPLE (15) Competitors please replace the sample specification values in the table below with those appropriate for your vehicle and submit this as described in the rules. This information will be reviewed by the design judges and will be referred to during the design event. 70 (1778 mm)25 (635 mm) above ground (confirmed with testing (tip method))95 (2413 mm) long, 62 (1575 mm) wide, 65 (1651 mm) high2 Polaris 3/4 bore master cylinders with adjustable bias bar 3 --The sample values are fictional and should not be used as the baseline for your designs. Please DO NOT make up values! 436 lbs (198 kg)248661385.xls.ms_office V11 10/23/2014  Upright AssemblyCNC 7075-Al, integral caliper mountWeldment, 4130 sheet, heat treated, shot peened Axle type, size, and materialFixed spindle, 1 (25.4mm) dia, 4130 steel normalizedRotating axle, 1 (25.4mm), 4340 steel, RC 40 Drivetrain TransmissionFinal Drive TypeFinal Drive RatioDifferential TypeTheoretical Top Speed (Power limited, Ratio 1st gear ratio (Or Starting CVT Ratio)2nd gear ratio 3rd gear ratio4th gear ratio5th gear ratio6th gear ratio (Or Final CVT Ratio)Half shaft size and materialJoint typeMaximum tractive effort  Acceleration time 100’ / 150’ Maximum grade capabilityPredicted max axle torque Peak driveline torque threshold, what component Ergonomics Driver Size AdjustmentsSeat (materials, padding)Instrumentation Frame Frame Construction and MaterialJoining method and materialTargets (Torsional Stiffness or other)Torsional stiffness and validation methodBare frame weight with brackets and paint Optional Information Body Work?Special Bit A?Special Bit B?Dash mounted fuel gauge, 5 LED tachFixed seat and steering wheel. Pedals adjust fore and aft 3 (76.2 mm) from center 55 lbs (25kg)GTAW ER70-S2 filler 4130 Tubular space frame with 1020 steel brackets and tabsCVT, Comet drive, student built 6061-T6 AL roller drivenGKN 6 ball, 72mm600 lbs2000 lbs-ft/deg (2712 N-m/deg)2100 lbs-ft/deg (2847 N-m/deg) CAE beam model, 1800 lbs-ft/deg (2440 N-m/deg) Carbon Fiber, 1 (25.4mm) thick PP seat foam , 2 (50.4mm) thick PP foam head 3.5 seconds / 4.5 seconds30% grade800 lbs-ft (1085 N-m)1000 lbs-ft (1356 N-m), Half shaft failsVac-formed plastic body5. mph, 42 mph 0.66Torsen LSD11.8LCD driver number display30mm OD solid 8620 steel case hardened to Rc 60 1.3mm deep, Rc 28 core Student built 2 speed gearbox 7075-T6 AL0.85248661385.xls.ms_office V12 10/23/2014
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