Hey guys I know this has been asked before but I couldn't find it.
How much do you cut off the inside of the helix to get the secondary clutch to open up more?
How much do you cut off the inside of the helix to get the secondary clutch to open up more?
jboar
New member
It was a while ago but I believe I cut .085"
Mac
Member
I don't believe you will gain anything. If your SRX or Viper center to center distances are setup correct I am quite certain your primary will close completely and bottom out before the secondary would need this modification. I remember hearing this rumor years ago. Maybe other models or brands benefited but not the SRX or Viper. Turk M.r viper please advise.
thats perfect thanks guys.
Mac
Member
Turk - you are agreeing that the secondary bottoms out on the helix first before the primary has closed completely? Interesting as I don't want to pass bad info. I will have ice in just a few weeks for testing and am gonna to revisit my low gearing setups that I can bury very easily. I fooled around with overdrive and this helix trick just a couple of seasons ago and remember the opposite. I do tune my sled out in front of the bar and do spend a lot of time inside between adjustments. I will revisit and post. Mr Viper you must have an opinion.
I have never ever seen buttons bottom out but cutting 60 thou lets them get lower faster.
extremelyfastmax4
New member
if u buy the helix ajustable u will find that ur sled will loss top end why? becauce the helix does not allow the secondary 2 open all the way as it bottoms agaist the sheave so on this i cut a 1/8 off now it opens the secodary all the way. some one told me they were no good but 2 me thats crape every thing is made 2 work sometimes its just mechnics that got over looked so u figure it out. so i looked at the reason u loose speed and thats all it needed.
How much speed in a 1000' speed run will this gain? Do any of our members do this mod? If it gains speed I would like to try it.
jboar
New member
I bought an overdrive shieve for the primary and hauck told me to cut the helix down in the secondary I believe .080"- .100" to make my secondary open up more. My other option was to get an aftermarket helix.