Transcript Design Review Presentation – Example

CLEANSPEED
Drivetrain
Ricky Wester
Agenda
•
•
•
•
•
Project Goals
Project Constraints
Overall Design
Breakdown of Parts
Conclusion
Project Goals
• RWD Package
– Increase traction
– Lightweight
• Deadlines
– June 1, 2012:Parts Spec’d
– July 1, 2012: Orders Complete
– September 1, 2012: Parts Arrival
Constraints
• Budget: ?
• Rules
– 3.5.2.3.
• Any transmission and drivetrain may be used.
• Geometry Constraints
– Differential mounting to frame
– Location of upright and rear hub
Overall Design
• Rear Wheel Drive
– Chain driven torque bias differential
– Tripod hollowed out half-shafts
– Aluminum hubs w/ integrated tripod housing and
floating brake rotor
*Part Drawing from RCV Performance, Picture from Taylor Race Engineering
The Goods
• Tripod Steel Axle Kits ($1,100)
– 4485 – Quaife 27 Tooth Honda 1.17 lbs (2)
– 4672-TA – Inner Tripod joint .33 lbs (2)
– 5278-TA – Outer Tripod joint .32 lbs (2)
– ½” Bored Half-Shaft – By Length ~1.5 lbs (2)
– 615-3 – Tripod Boot (4)
*Parts drawing and prices from RCV Performance 2012-2013 FSAE Catalog
The Goods
*Parts drawing and prices from RCV Performance 2012-2013 FSAE Catalog
The Goods
• Front Hub Assemblies ($1,250)
–
–
–
–
–
–
–
–
–
5116 – Front Hub .55 lbs (2)
5124 – Titanium Wheel studs .03 lbs (8)
5117 – Hub Nut .05 lbs (2)
5108-RA – Floating 10” Rotor .95 lbs (2)
5109 – Rotor Floater .27 lbs (2)
5141 – Rotor Pin .01 lbs (12)
McMaster: 97633A180 – Rotor Pin Snap Ring (12)
Timken 08125 – Bearing .35 lbs (2)
Timken 08231 – Race (2)
*Parts drawing and prices from RCV Performance 2012-2013 FSAE Catalog
The Goods
*Parts drawing and prices from RCV Performance 2012-2013 FSAE Catalog
The Goods
• Rear Hubs Assembly ($1,700)
–
–
–
–
–
–
–
–
–
–
–
–
5231 – Rear Hub .75 lbs (2)
5239 – Hub Nut .1 lbs (2)
5124 – Titanium Wheel studs .03 lbs (8)
5245 – Track Holder .01 lbs (2)
5244 – Tripod Track .01 lbs (12)
185-10C – Tripod Boot (2)
McMaster: 91251A435 – Holder Bolts (6)
5284 – Floating 220 mm Rotor 1.29 lbs (2)
5141 – Rotor Pin .01 lbs (12)
McMaster: 97633A180 – Rotor Pin Snap Ring (12)
Timken: L610549 – Bearing .96 lbs (2)
Timken: L610510 – Race (2)
*Parts drawing and prices from RCV Performance 2012-2013 FSAE Catalog
The Goods
*Parts drawing and prices from RCV Performance 2012-2013 FSAE Catalog
The Goods
Floating
Brake Rotors
*Parts drawing and prices from RCV Performance 2012-2013 FSAE Catalog
The Goods
• Taylor Race Engineering
– Honda Torque Bias Differential – Sealed ($1,394)
• Part #: INV-02000431
• http://www.quaife.co.uk/shop/products/qdf7zr
– Sealed Bearings ($47)
• Part #: INV-020004311
– Chain Drive Sprocket ($50 - $100)
• Dependant on final drive ratio
• Custom Mounting Brackets
– In – house est. $400
• Total: $1,900
The Goods
Quaife – Honda
Torque Bias
Differential
Photo from Taylor Race Engineering website
Photo from Quaife Engineering website
Conclusion
• Final Cost $5,650 + shipping
• Benefits
– Lightweight FSAE proven
– Off the shelf, stocked part = fast turn around time
– Sealed differential with no added machining costs