changing variator rollers....

Posts: 17

i have been reading alot on here about changing the rollers for heavier or lighter rollers depending on if your looking to achieve more bottom or top end. in my case i want more lowend for hill climbing and peppier take off so i would need lighter rollers. i have a 2006 maxxam 150 (which carter now seems to claim...lol) i think i was one of the first on here to notice these "off brand carts" had the carter name on them. anyways my question is....what if i drilled out some meat from my rollers to get them down from the stock 12 grams to say 10 grams??? any thoughts or suggestions???

Posts: 411

Yes it would work. You will gain torque by the CVT shifting late.
Higher rpm shift points. If you drill too much the rotational mass in the cvt wont be enough to put it to high gear....you lose top end. If you drill too much or too lite you lose axcelleration as well as you have the engine revved out and the cvt can still be delayed to shift.

Ultimately for climbing its pretty simple and if you hit 10 grams thats what most people are after. If your after acceleration and top speed you have to find the "voodoo magic" balance weight so its heavy enough to shift at the proper time and still retain resonable top end and acceleration but light enough that it doesnt bog you down shifting too fast... Its not as simple as testing top speed and try another roller/slider and test top speed as long as your at top speed go as light as possible.....not quite that easy. Torque and acceleration do not go hand in hand...related but not the same. Going heavier can only benefit you if you have the power to push it that it doesnt bog because of the heavy rollers...Your variator can only open up so much until its maxed out then its all about engine rpm and if it has the power to pull the machine to red line.

Posts: 296

I second that. If you look at my signature that was my first experiment with my 250. With a 150cc go 9g rollers, some people use 10g. On my dune 150 there's a huge difference between 9g and 10g rollers. I like 9g, the fewer hills I have to back down the better.

Greg

Posts: 4286

I agree also, drilling the stock rollers will take time and you have to be very careful to get each rioller very close to the same weight.

rollers are cheap, my wife's 150 has 9 gram rollers, yellow clutch springs and a yellow main spring. it will pull her and my daughter up most any hill we have found.

if it wont then my daughter gets out and walks up the hill Twisted Evil

Posts: 896

if you decide to drill'em, go slow and easy or you'll spin out the inside, then your done.

Posts: 238

How big are your hills eddie? I'm using 9.5g sliders (same as 7.5g rollers) for mountain climbing and I still have fairly good top end. Revs fairly high at slow speed though. Also, depending on the slope, consider changing to a larger axel sprocket. Was a great investment for me.