Modifying Snowmobiles to Produce Lower Noise Levels 730813

Commencing with a Canadian Federal Department of Transport contract to study the feasibility of snowmobile silencing, the commercial supply of exhaust systems, and the prototyping of representative machines, a considerable amount of data has been accumulated over the past two years in Winnipeg. From this data certain patterns have emerged which we feel provide a basis for developing a pragmatic approach to the problems of reducing the noise level of snowmobiles.


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