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track leaving mound on trail; sled tracks
Topic Started: Feb 25 2013, 10:59 PM (744 Views)
my_nanc
Advanced Operator
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what will cause a sled track to leave a mound in the middle of the track when driving down the groomed trails? Is it slippage, tracks trying to push the machiene down the trail, or is it track design, is it more prone to different tracks or lug height? has anyone experience this or see it
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trailboss77
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From what I've seen it's these deep lug tracks that are tearing up the trails. They tear up the trail even when the rider is behaving himself.
Have been grooming since 1978 have covered more than 100,000 miles of snowmobile trail.
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PB260
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All tracks whether snowmobile, groomer or other move snow and throw snow both behind and in front while travelling.
Snowmobiles carry snow on the rear flap, in the tunnel and especially at the front of the tunnel. At various time this build-up falls off creating lumps.
My observation is that the warmer and wetter the snow, the more that this will occur.
The type of track and the style of operating will affect the rate at which this happens also.
Gentle riding at slow speeds will move less snow than aggressive riding at high speeds.
:myopinon:
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Sledderglen
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They stop on trail then pin it spinning the track. This leaves a large pile or lump of snow. Or ice falling out of tunnel and gets mushed up going between the track and bulkhead and forms a lump or pile of snow. Just my guess
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R/L GROOMER
Trail Groomer
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Most snowmobiles are liquid cooled, with every sled that goes over the trail it is designed to cool its self with snow it picks up and goes over the coolers underneath. The snow turns into a slush, and after the slush builds up it falls off and turns into a clump on the trail, either a build up on the snow flap or the tunnel, and if its really cold it turns to ice in the tunnel. Thats one of the factors why at stop signs you see more snow melt that other areas. Years ago before liquid cooled sleds you had free air and fan cooled sleds, with the trails having less snow melt than today.
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mtntopper
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I have seen the same/similar problem as you are having in some snow conditions. My observation is that as snow is compressed under our tracks in certain snow/temperature conditions we spit a bit out the back of the track as we move forward leaving a small ridge the width of the track. The compression of the snow under the tracks along with the forward movement of our ATT vehicle with tracks is the reason for the ridge. As snow conditions change with temperature we see more or less of these ridges in the snow behind the tracks. :myopinon:
My1200 LMC
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my_nanc
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this last post is what i think also is going on, i think that also a less lug track with more wight will do the same thing. so if i put on a deeper lug track with more on the ground pushing forward it should help.
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