If you are running anything under probably 14gr rollers (maybe 13) it would make zero difference. Since most people on here are running 9-10gr rollers or sliders, the belt never climbs past maybe 1/2 of the variator. The stiffer torque spring only compounds this effect, making it even harder for the belt to climb the variator.
If you were going for maximum on road speed, then this may be the way to go, but with the lower weight rollers, they never get that far up the ramp.
How do we determine how high up on the ramp the belt is riding? Do people put a marker of some sort on it and then run the buggy and then check it out?
I think we're all trying to get the same thing, low-end torque with top-end speed. Tough to get sometimes, but we can always wish.
Joined: Mon Mar 14, 2005 10:59 am Posts: 674 Location: Paducah, KY
I think the marker idea would be an excellent way to check.
when I tried 10's in mine (14's are stock), top speed dropped dramatically, and you could tell it never fully moved the variator out.
when I tried the 12's it wasn't much different, top speed was still lower than the 14's but rpm's weren't quite as high as the 10's.
I think 13 would probably be the limit on my particular buggy as far as fully using the cvt.
I never bothered with the 1500 torque spring since my belt wasn't slipping and it effectively makes it act like you are running even lighter rollers than you are.
I know that on mine, I can definetly feel the cvt go into its highest ratio, the engine rpm's decrease like you shifted into overdrive, this happens about 25 mph (it tops out at about 42-45 on the road with the engine power being the limiting factor).
I understand the need to have a stock buggy climb better but if you can increase your power and possibly gear it lower then you have that covered. If you are making plenty of power then you might as well use the CVT to it's fullest.
Joined: Sun Jan 07, 2007 7:38 pm Posts: 2893 Location: hopatcong, NJ
lol... I wasnt correcting your english... I was looking for a little bit more specific... Actual top speed before and after... Hill climbing ability on a scale of 1-10 before and after, so on... THink this mod would work with sliders? or only rollers?
Cool idea... I wish I could get the awesome climbing ability to fly up chainbreaker, then go 45mph down the firebase @ EMR!!!!
Joined: Sun Aug 28, 2005 4:13 pm Posts: 4499 Location: New Jersey/Pennsylvania
Have any of you seen that mod someone posted about off a scooter forum, about grinding the variator roller ramps more open so they climb higher? Ill see if i can find it tommrow, looked interesting.
Joined: Sun Jan 07, 2007 7:38 pm Posts: 2893 Location: hopatcong, NJ
offroadkarter wrote:
Have any of you seen that mod someone posted about off a scooter forum, about grinding the variator roller ramps more open so they climb higher? Ill see if i can find it tommrow, looked interesting.
uuuummmm...did you read teh pages in this thread? this is what we have been talking about!
Have any of you seen that mod someone posted about off a scooter forum, about grinding the variator roller ramps more open so they climb higher? Ill see if i can find it tommrow, looked interesting.
Don't you read BNews anymore? Just playing with you....
Joined: Mon Mar 14, 2005 10:59 am Posts: 674 Location: Paducah, KY
well all this CVT talk has gotten me wanting to experiment with some sliders. I thought about trying some 14gr out since I'm currently running that weight roller.
Can anyone tell me why the same weight slider performs like a lighter roller?
If it comes in at about a 13gr equivalent roller then I will be happy. I notice a very slight shudder or vibration in my CVT when I am poking along on trails with my boys in the buggy and am hoping to eliminate this as well as raise my rpm just a little (without losing top end speed of course). This slight vibration doesn't occur when I have it pegged, I've read that sliders eliminate this.
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) I transformed a sort of lawnmower in a little offroad car! 
