Thoughts on variator cutting, drive ramp extending, etc

[paydem]

Found a video on Youtube about cutting variator to get around +15-20km/h in top speed. Would be interesting to hear your opinions about this.

In where I live, they teach us to speak Russian so I have no problems understanding what he says.

0:22 talking about how the belt wasn't going up to the top
3:00 breaking off excessive material off variator to extend roller's drive ramp distance
4:05 dremelling out the surface to make it smooth
7:33 showing how the roller can go further now
8:20 showing how the belt is not reaching the top
9:19 filing the variator so the two plates come closer together
12:36 shows how the belt can go up to the top

www.youtube.com/watch?v=v56cVUhgrQk

This would kill the acceleration by alot, any thoughts?

[190mech]

These mods shouldnt hurt acceleration as long as the belt is all the way at the bottom of the variator and the top of the torque driver pulley..I enjoyed watching the vid(s),and think it would increase roller wear,but the added travel would be worth it with some stock variators..

[paydem]

Dec 10, 2017 15:05:26 GMT -5 190mech said:

These mods shouldnt hurt acceleration as long as the belt is all the way at the bottom of the variator and the top of the torque driver pulley..I enjoyed watching the vid(s),and think it would increase roller wear,but the added travel would be worth it with some stock variators..

Mhm... If the belt does not reach the top of the variator, my first instinct would be is to get a wider belt, but then I should modify TD pulley so the belt doesn't sit as high, am I right? If you had stock variator, would you file down the place where variator and front pulley contacts or you would you rather buy a wider belt?

[190mech]

A longer belt would be the best,but are hard to find in some models..If the variator sheave is modified as in the vid(filing the small end)which would allow the belt to also ride lower in the low RPM mode,BUT this also allows the variator back plate to travel farther and can possibly run off of the 3 guide pins and destroy the plastic guide bushings in short time..Its all a careful trade off and some times just cant be done with the cheap parts..