Winter Knights

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• Winter Knights
• 2006 Clean
• Snowmobile Challenge

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Design Objectives

• Reduce emissions
• Reduce noise output
• Maintain performance characteristics similar to
  stock
• Develop a cost effective solution in the form of
  an aftermarket upgrade

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Modifications

• 2 In-line catalytic converters
• Redesigned muffler system
• Track Skirt
• Sound Dampening Material
• Gauges
• Air intake and coolant reservoir

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Catalytic Converters
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Modifications

• 2 In-line catalytic converters
• Redesigned muffler system
• Track Skirt
• Sound Dampening Material
• Gauges
• Air intake and coolant reservoir

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Clean Snowmobile flow animation
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Modifications

• 2 In-line catalytic converters
• Redesigned muffler system
• Track Skirt
• Sound Dampening Material
• Gauges
• Air intake and coolant reservoir

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Track Skirt
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Modifications

• 2 In-line catalytic converters
• Redesigned muffler system
• Track Skirt
• Sound Dampening Material
• Gauges
• Air intake and coolant reservoir

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Echo Eliminator
Dynamat
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Stock vs. Modified
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Benefit To Snowmobilers

• Grants ability to ride in environmentally
  sensitive areas
• Cost effective
• Maintains stock performance characteristics

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Horsepower Analysis
Stock Horsepower 117 at 7200 RPM
Stock Torque 98 ft-lbs at 5500 RPM
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Horsepower Analysis
Modified Horsepower 103 at 7200 RPM
Modified Torque 78 ft-lbs at 6500 RPM
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Benefit To Dealers

• Large market
• Straightforward installation
• Creates a new customer base

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Benefit To Outfitters

• Cost efficient
• Easy installation for large fleets
• Can be adapted for use on other models

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Environmental Affects
Test Speed 35 mph 45 mph 50 mph
Avg. Stock 0.178 (79dB) .399 (86 dB) .564 (89dB)
Avg. Modified 0.038 (66dB) 0.044 (67 dB) 0.068 (71dB)
Reduction 78.65 88.97 87.94
Tests performed at a distance of 50 feet with
samples taken on both the left and the right side
of the snowmobile (All data measured in Pascals
of sound pressure.)
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Environmental Affects
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Rider Feedback
Category Average Score / 5
Noise Level 4.9
Fit Finish 4.0
Instrumentation 4.3
Overall Design 4.0
Overall Handling 3.6
Cornering 3.3
Suspension 3.2
Power Output 3.2
Acceleration 3.1
Weight 3.1
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Thank You!
Questions?