1. Snowmobile Rear Drive Neil Miller Chris Hill Jeremy Nichols

2. Research RND Innovators – Only company marketing a rear drive system Claims – Shorter stopping distance – Increased efficiency – Improved handling – Eliminates “darting”

3. Research Proof of concept – Two modified 800r’s Claim 20.4 mpg Next closest sled was a fuel injected 4-stroke with 14.4 mpg

4. RND Innovator’s Design

5. Cruise, Conventional Snowmobile

6. Cruise, Rear Drive Sled

7. Acceleration, Conventional Sled

8. Acceleration, Rear Drive Sled

9. Braking, Conventional Sled

10. Braking, Rear Drive Sled

11. Design Options Option 1 – Use drive shafts Use bevel gears from an outboard engine – Bolt in design – Reasoning No modifications to the tunnel Keep center of mass in the middle of the tunnel – Disadvantages Heavier than stock Steep U-Joint angles

12. Option 1

14. Option 2 Belt drive – Use synchronous belt – Bolt in design – Adanvtages: Lighter than drive shafts Don’t have to worry about U-Joint angle Simpler to produce Lighter than stock – Disadvantages: Snowpack in the skid Belt whine

15. Option 2

17. Testing Using electric motors (Possible depending on time) Fuel efficiency runs Put scales under skis on the track dyno

18. Questions?

19. Sources http://rndinnovators.com/