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University of New Hampshire

University of New Hampshire. Clean Snowmobile Challenge 2006. Overview. Target market Power plant selection Drive train Power output Emission reductions Noise reductions Costs Estimated retail costs Conclusion. Target Market. Recreational enthusiasts Rider priorities Performance

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University of New Hampshire

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  1. University of New Hampshire Clean Snowmobile Challenge 2006

  2. Overview • Target market • Power plant selection • Drive train • Power output • Emission reductions • Noise reductions • Costs • Estimated retail costs • Conclusion

  3. Target Market • Recreational enthusiasts • Rider priorities • Performance • Environmental considerations • Noise reduction

  4. Power Plant Selection • CBR 600 F4i • Four stroke (lower emissions) • Four cylinder, liquid cooled • Throttle body fuel injection • Exhaust air injection • 3-D ignition mapping • High revving

  5. Drive Train • Internal gear reductions • Off crank • 1.822:1 • Transmission modifications • .8:1 • External gear drive • Final gear ratio: 1.45:1 • Output shaft RPM • Jack shaft

  6. Power Output • 123 hp, 72 ft-lbs @ 8950 RPM (clutch)

  7. Reduced Emissions • Four stroke • Low emissions California model CBR 600 F4i with catalytic converter • Exhaust air injection • Engine/exhaust system passes 2004 CARB emissions standards

  8. Noise Reduction • Under hood sound insulation (Accumat) • Under seat exhaust • Stock CBR 600 silencer, 80 dB rating • Designed specifically for motor • Fiber Frax exhaust insulation

  9. Costs

  10. Estimated Retail Cost • Late model chassis: ~ $4000 • CBR 600 F4i motor: ~ $2000 • Hardware: ~ $188 • Exhaust: ~$550 • Total production cost: ~ $6738

  11. Conclusions • Produced high performance machine • Fast acceleration • 90+ mph top speed • Lower emissions than standard 2 stroke • Smoke free • Majority of time spent integrating motor into chassis

  12. Questions

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