2006 Michigan Tech Clean Snowmobile Matt Prusak Team

2006 Michigan Tech Clean Snowmobile Matt Prusak - Team Leader Wes Barrett – Vice President

Concept “Design and build a clean, quiet, reliable, high-performance snowmobile that is enjoyable to ride in a wide variety of conditions, and can be operated by a wide range of enthusiasts. ”

Outline - Why is the MTU Clean Snowmobile superior to current technology? - Consumer Perspective - High-Performance - Environmental Perspective - Low Noise - Low Emissions - Dealer/Outfitter Perspective - Durable - Low Cost - High Resale Value

Performance - Engine Consumer Perspective • ’ 03 Honda CBR 954 RR – 4 -cycle – 4 -cylinder – 4 valves per cylinder – Electronic Fuel Injection – 113 k. W (152 rwhp) in OEM trim

Performance – Chassis Consumer Perspective • Premium suspension components – Fox Float front shocks used • Highly tunable – Rear suspension spring and damping rates modified • Extensive on-trail Calibration – Multiple-rider input for 200 miles – Calibrated for best possible compromise between bump absorption, and weight transfer for a wide range of users, from beginner to expert

Emissions Development Environmental Perspective • Why use a four-stroke engine? – The numbers don’t lie

Emissions Strategy • Team-Designed Exhaust System – Emitec Catalytic Converter Installed • Power Commander Piggyback EFI Modifier – Used to Modify OEM Fuel Map • Significant reductions in tailpipe emissions compared to OEM engine calibration – 96. 6% Average Reduction in HC – 97. 2% Average Reduction in CO – 93. 1% Average Reduction in NOx – Stoichiometric Operating Conditions

Emissions Development

Noise Reduction Environmental Perspective How? • • • Team designed Helical Gearbox Intake silencer 2 piece muffling system – Primary Supercritical muffler – Secondary glass pack to absorb high frequency noise • • Closed off hood vents Sound absorbing material in belly-pan Minimized idler wheels in rear suspension Made Use of Arctic Cat style Quiet Track Technology

Noise Reduction Testing Environmental Perspective Secondary Muffler Testing Selections: – Long Red GP – 83. 1 d. BA – Good combination of noise and power output

Noise Reduction Testing Environmental Perspective J-192 Field Testing Selections from testing: – Covered Silenced Intake – 74. 5 d. BA – Closed Hood Vents – 73. 5 d. BA

Durability Dealer/Outfitter Perspective • Built on a Polaris Pro-X race driven Chassis – Torture tested for over 200 miles on ungroomed trails • Powered by a race proven Honda 954 cc High Performance street bike engine – Dyno Tested for over 100 hrs – Constant 10 minute intervals at mode 1 calibration point

Cost Analysis Dealer/Outfitter Perspective • 2006 TICA – Total Implementation Cost Analysis (TICA) of $1346. 19 – Coming in at around $9400. 00 makes it cheaper than the new 4 strokes when added to price of Stock 600 Polaris • Highly tuned 4 -stroke Engine – Consumes Less fuel than stock – Approx. 14 mpg • Maintenance Free – Fouling spark plugs isn’t even considered – Uses no oil, changing oil/filter seasonally

Questions?