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Thunder Products (Big Venom Viper kit) with Heavy Hitters


You can add the 1/4 set screw before the original set screw, make sure you swing the weight thru the entire movement checking clearance. You will only have about 1/16" clearance between the set screw and the casting support with the right combination.
It's only hitting the rev limiter when I spin the track on take off, but that's in 6" of loose snow, tried it today after it got packed down and I was touching the rev limiter, thinking I should be good on a hard packed groomed trail.
 
It's only hitting the rev limiter when I spin the track on take off, but that's in 6" of loose snow, tried it today after it got packed down and I was touching the rev limiter, thinking I should be good on a hard packed groomed trail.
Sorry, meant to say barely touching the rev limiter .
 
Fun to hear your set up! What are you running in H1, H2 and H3?
 

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Fun to hear your set up! What are you running in H1, H2 and H3?
Have 3/4 screw in h1, just tried 1/4 plus 3/4 and nothing changed, still hitting rev limiter, can't ad anymore weight to the heel.
 
The problem it mite be spring to much or the secondary spring is to tight not getting into high gear fast enough.
Primary is stock with glide shims and secondary is wrapped 6 to 1
 
I would wait till you get on some hard packed snow to see what it is like before I make another change.
I was thinking the same thing
 
just got a set of weights from lonn for my sisters nytro where setup by him,they weren't even close lots of belt burn an over rev on bottom, belt slipping, changed weight and have them working very well now, need to fine tune when we get some base down but can drive around now at 8 mph without slipping and very smooth. set them up very similar to ulmer weights on friends viper, pretty much need to load the base of weight for 4 strokes not the tip. not bashing lonn or his kits because they do work well if setup right but we all know yamaha clutches slip on the bottom so i have found you need a lot of pinch on the bottom.
 
Need help with tunnig this kit, still hitting rev limiter on hard pack trail.
 
Need help with tunnig this kit, still hitting rev limiter on hard pack trail.
Change your secondary to 3-3. You can also add 2 thin washers to the middle bolt.


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Change your secondary to 3-3. You can also add 2 thin washers to the middle bolt.


Sent from my iPhone using Tapatalk
3-3 ,is that going to grab the belt better on launch.
 


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