Snowmobile Wide-Track Accommodation With Asymmetric Cast Clips
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Solution Overview
Problem
Existing snowmobile designs face challenges in accommodating wider tracks, particularly in terms of structural components like the frame, tunnel, and powertrain, which require significant modifications and new parts, leading to increased complexity and cost.
Innovation Solution
The snowmobile design incorporates asymmetric cast clips and a widened tunnel with a transition portion, utilizing existing components from narrower track models, and includes features like a rear rack assembly and angled radiator for improved ergonomics and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the track width is increased to 20 inches, then the snowmobile can handle deep snow and provide better flotation, but the frame, tunnel, and powertrain require significant modifications and new parts
Solution Approach 1:
The bulkhead is designed with asymmetric cast clips where the left cast clip has a different width than the right cast clip. This asymmetry allows the bulkhead to accommodate the wider 20-inch track on one side while maintaining compatibility with standard components on the other side, thereby adapting to the wider track without requiring complete structural redesign
Solution Approach 2:
The bulkhead design with asymmetric cast clips enables a single component to serve multiple functions: it supports both the wider 20-inch track and maintains compatibility with standard narrower track configurations. This multi-functionality allows the snowmobile platform to accommodate different track widths without requiring completely different frame structures
2Reliability
If new parts are created to accommodate wider tracks, then the track can be properly supported, but the manufacturing cost and part complexity increase
Solution Approach 1:
The asymmetric cast clips are designed to match the specific width requirements of the 20-inch track on one side while maintaining standard dimensions on the other side. This allows the bulkhead to be manufactured as a single piece that provides reliable support for the wider track without requiring complete redesign of all structural components
Solution Approach 2:
Only the specific portions of the bulkhead that require wider spacing (the cast clips) are designed with asymmetric dimensions, while the rest of the bulkhead structure maintains standard dimensions. This localized modification approach ensures reliable track support where needed while minimizing manufacturing complexity and cost for the overall component
Data Source
AI summary
A snowmobile comprises a chassis with a front portion and a tunnel, and a power train unit supported by the chassis. The snowmobile further includes a plurality of ground-engaging members cooperating with the power train unit to operate the snowmobile. The plurality of ground-engaging members includes a pair of front skis and an endless track assembly. The track includes a wide track belt and the snowmobile body portions and chassis are adapted to fit the wide track belt. A rear rack assembly is positioned on a rear of the snowmobile frame and can support a passenger seat.