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Published byImogene Cannon Modified over 9 years ago
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University of New Hampshire Clean Snowmobile Challenge 2006
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Overview Target market Power plant selection Drive train Power output Emission reductions Noise reductions Costs Estimated retail costs Conclusion
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Target Market Recreational enthusiasts Rider priorities Performance Environmental considerations Noise reduction
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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
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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
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Power Output 123 hp, 72 ft-lbs @ 8950 RPM (clutch)
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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
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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
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Costs
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Estimated Retail Cost Late model chassis: ~ $4000 CBR 600 F4i motor: ~ $2000 Hardware: ~ $188 Exhaust: ~$550 Total production cost: ~ $6738
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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
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Questions
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