clutch temps

Y

yammitrip1

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Joined
Oct 19, 2013
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215
Age
32
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rome
I did a search and really couldn't find much on this topic. I am in the process of finding a good back country/ good back shift set up for my viper. its a 128 cobra track, edge skid, aaen triple pipes and so on. Right now I am running 8dn-10 with 4.5 grams in them with 15.6 mm rollers, green dot with a straight 47 helix wrapped to 80. The set up does really well to me, very good back shift and rpms are right at 9200. I plan on throwing a little more weight at it for now probably 2 grams because I have been testing in 28-30 degree weather. But my real question is, how hot is hot on clutches? when I ride my sled in the three feet of snow we have, I am usually on and off the throttle like crazy, lots of wot and just throttle happy when trying to maneuver the sled so it doesn't get stuck and control the throttle so the rear end doesn't wash out when side hilling on steep slopes.
I took a heat gun and check my clutches after 30 or so mins of riding around in the deep stuff and they are right around 130degrees on the high side of the primary and 150degrees near the inner shaft. Just something that I been wondering and would like to hear what others think
 

They should be luke warm if you touch them with your hand. If you burn your hand when you touch them there too hot


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I am not by any means trying to be sarcastic here, but I am referring to throttle happy and loading the heck out of the engine. Corner to corner wot. Clutches still should only be nuke warm? I have never put together a clutch set up for back country riding that doesnt get too hot and have trying to for years and some how can't keep the clutches cool like you guys state
 
The hottest I have ever had my clutches was playing off trail on a 121 set up for hard pack, pinned 3/4 of the time in a few feet of wet heavy snow. Yes the clutches were on the "upper end" of how hot they should be in my opinion, but I could still hold me hand on them for 3 seconds before I needed to take it off.
You are running a piped machine that's putting a lot more hp though those clutches. So it's is understandable that they heat up more.
 
Mine were 109F primary and 98F secondary. Barely warm but riding on bumpy lake with frozen hard snow drifts so couldn't beat sled that bad. Thats maybe 20 or 30 minutes. I did not check belt temp.
 
understand belt slippage is what usually causes most of the heat issues in your clutches. like posted, sure they should be warm to touch but not scalding 3:16 (yammie tony)
 
hmm makes me wonder if i should gear down some more, we have about 2 to 3 feet of snow right now and a bunch of us go to sand pits or areas with 300 feet hills that a 128 needs to be pinned to get up and you really need to have it wide open to keep it from getting barred and i love going in the woods maneuvering through obstacles and trees. lol trying to do what chris burandt does.... on a sx viper. when working with very fast upshifts and downshifts. What are some ways to keep the belt temps normal? ITs running at 9200 so i could throw 1 to 2 grams at the primary to grab the belt better but i already have the secondary wrapped to 80 with a green spring?
 
yes, clutches aligned perfectly and distance is with in spec. I even have a torque limiter on it
 
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