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Snowcat Adventure & Usage Forum Snow Trac, Kristi, Thickol/LMC, Tucker, Bombardier stories & discussions

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Old 02-12-2007, 10:02 AM
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Default Snow trac Sprockets

Has anyone ever tried polyurethane drive sprockets on one yet or (UHMW)
plastics ? What is the thickness of the sprocket? it might be to thin for polyurethane.......


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Old 02-12-2007, 12:24 PM
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Default Re: Snow trac Sprockets

Brad,

The original sprockets seem to have come in 2 different designs (maybe 3) and are pretty thin. On a Snow Trac there are 4 total sprockets, 2 for each track. They were made of some sort of bronze/aluminum and were considered a 'wear' part, but they were reversable to extend the life. Lyndon or some of the others probably know more about them, but here are photos of 2 different types of sprockets that I know of.

The first photo is the early style sprocket.
The second photo is a heavy duty aftermarket version of the later style.
Photo 3 is the new style sprocket, installed on member nwerring's machine.
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Old 02-12-2007, 12:44 PM
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Default Re: Snow trac Sprockets

The design of the sprockets would probably prohibit the use of many of the synthetic materials, especially on the "New style" snow trac sprockets. As Bob indicated they were designed to wear, rather than wearing out the grousers (cleats) and guides. The ones that the Canadian Phone company were having made, and the ones I used to make were made of a Brass alloy that contained a lubricating agent, graphite. There are some Bronze Bearing alloys that replaced "Babbit" that work much better than the original brass used by the Snow Trac manufacturer. Various Plastic and synthetic coverings do work well on the drive sprockets for most of the other makes of Cats, but they all have a metallic body underneath, usually aluminum.
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Old 02-20-2007, 02:00 PM
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Default Re: Snow trac Sprockets

The photo on the right are the sprockets made by one of our members Bob Cantin. The top left photo are as said earlier made for the older style Snow Tracs. There are 3 for sale on Warrens web site. Also Warren should have some Old New Stock new style sprockets.
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