1. University of Wisconsin-Platteville
2006 SAE Clean Snowmobile Challenge
Houghton, Michigan
March

2. Outline Team Chassis Engine Cooling System Driveline Improvements
Noise Reduction
Emissions Reduction
Cost Analysis
Conclusion

3. The Team Located in the southwest corner of Wisconsin
Mechanical Engineering is the largest major on campus

4. Chassis 2002 Polaris Pro-X 440 Fan High Performance Platform
Before
2002 Polaris Pro-X 440 Fan
High Performance Platform
Light-Weight, durable chassis
672 lb. Wet
After

5. The Engine Rotax Semi-Direct Injected 600cc 2-Stroke Electric Start
Electronic Reverse
V Force Reeds
2-4 HP in Mid-Range Power

6. Cooling System Front Track Heat Exchanger Belly Pan Radiator w/Fan
Coolant Temps Reduced 30°-40°F

7. Driveline Improvements
Hiperfax slides
Teflon Inserts
700°F Melting Temp
96 Track Studs
Improved Control
Braking
Acceleration

8. Noise Reduction Damping and absorption of under hood and tunnel noise
Dynamat Xtreme®
Vibration Damping
Dynamat Hoodliner
Sound Absorption

9. Noise Reduction Cont. Exhaust system Redesigned Automotive Muffler
Perforated Tubing w/Glass Packing
4-6 dBa Reduction

10. Noise Reduction Cont. Drive Train Removal of Select Idler Wheels
Addition of a Vespel® Chain Tensioner

11. Noise Reduction Cont.

12. Emissions Reduction 2 Stage 3-Way Catalyst 200 Cells per sq/in
Ceramic Substrate
Can withstand
accelerations of 75g
for the life of the vehicle
Custom diffuser provides
uniform distribution of O2

13. Emissions Reduction Cont.
Secondary air injection
Driven from magneto side
Air delivery varies with engine RPM.
Compact packaging

14. Stock 600 SDI KW
Platteville’s Clean Sled KW

15. Platteville’s 2-Stroke (6th Place) 82.5 KW
Second Place Finisher (4-stroke) KW

16. Cost Analysis Technology Implementation Total Cost $ 919.31 Subsystem
Subtotal
Induction System $
Fuel System $
Engine $
Exhaust After Treatment $
Electronics $
Noise Treatment $
Technology Implementation Total Cost $

17. Conclusion Environmentally friendly snowmobile Cost effective design
Maintains performance attributes of a 2-stroke snowmobile

18. Sponsors Hiperfax Polaris Industries Millennium Technologies Camoplast
Outlaw Composites
Digatron
TekVest
Dynamat
Castle
HMK
Hiperfax
Camoplast
NGK
Sportech
Association of Wisconsin Snowmobile Clubs
Digatron
New Trails Inc.
VConverter
Stud Boy
Click’s Cycling Service
Sign Worx

19. Comments and Questions?