A New Approach to Positive Drive Snowmobile Tracks

710231

02/01/1971

Event
1971 Automotive Engineering Congress and Exposition
Authors Abstract
Content
The involute lug drive snowmobile track is a major step forward in the technological improvement of snowmobile performance. New materials, new designs, and new methods are employed to fabricate a snowmobile track that has outstanding performance characteristics. The liquid cast polyurethane system makes possible improved track carcass construction, maintaining the ultimate physical properties required to make a long-lived, efficient, power transmitting snowmobile track.
This paper discusses the engineering principles of snowmobile locomotion and how they apply to the improved design of the involute lug drive track. The relation between material, physical properties, construction methods, design, and track performance is developed. Fatigue characteristics of textile tensile cords are presented showing correlation to field and laboratory track testing. The exceptional polyurethane involute lug track and drive wheel characteristics are compared with conventional tracks. Problems associated with snowmobile track field testing and evaluation are discussed. The engine horsepower loss due to less oxygen available at higher elevations is graphically compared to SAE elevation correction factors. The peculiarities of alpine snow conditions are presented as the ultimate proving grounds for snowmobiles.
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DOI
https://doi.org/10.4271/710231
Pages
12
Citation
Haines, W., "A New Approach to Positive Drive Snowmobile Tracks," SAE Technical Paper 710231, 1971, https://doi.org/10.4271/710231.
Additional Details
Publisher
Published
Feb 1, 1971
Product Code
710231
Content Type
Technical Paper
Language
English