neogie
Scoot Enthusiast
Posts: 142
|
Post by neogie on Jan 19, 2020 22:48:45 GMT -5
Ho guys, just bought a TWH torque driver for my chinarelli scoot with 3 grooves- stock, 30and 45 degrees straight. My question is if it’s normal to go up on my roller weights when using the steepest angle? Like I’m currently using 5.5 gram weights on my set up with the stock torque driver. And by the way is it normal for the new torque driver to feel some slight resistance when opening than compared to the worn out stock? Thanks
|
|
|
|
Post by snaker on Jan 20, 2020 12:53:07 GMT -5
I'm not sure if everyone is on the same page in describing those slot angles. I recall opposing references brought up on the interlink. So...
The closer the slot is to being parallel to the shaft. the less resistance to upshifting and the less forceful the backshifting (forced downshift).
The closer the slot is to being parallel to the belt, the more resistance to upshifting and the more forceful the backshifting.
How much it affects the rollers depends on the setup. The flyweights and the torque sensing have different functions but also overlap. If it was tuned favoring the flyweights, then changing the flyweights will have a greater effect.
|
|
|
|
Post by Zino on Jan 20, 2020 14:14:44 GMT -5
If you change the pipe ,cylinder or any part of the transmission you have to look at retuning the transmission so you stay on the powerband .
The weights have to be heavy enough to over come the contra spring plus the torque driver angle .
They have to be light enough so you have good acceleration with no bog .
If you have more resistance you need heavier weights How much is what feels best to you.
|
|
|
|
Post by oldgeek on Jan 20, 2020 15:27:26 GMT -5
Don't forget rider weight also plays a big role in CVT tuning.
|
|
neogie
Scoot Enthusiast
Posts: 142
|
Post by neogie on Jan 22, 2020 0:42:11 GMT -5
Now i also notice like the torque driver without the contra spring opens up wide enough and tried putting the belt and it rides lower than the stock torque driver. But when using torsion controllers with ball bearings and when i put it all together, it seems like it can’t open up fully like when it was without the contra spring. I’m already using a dayco 16.8x808 belt which reaches the edge of the variator when the torque driver is without a spring.
|
|
|
|
Post by snaker on Jan 22, 2020 16:49:24 GMT -5
Now i also notice like the torque driver without the contra spring opens up wide enough and tried putting the belt and it rides lower than the stock torque driver. But when using torsion controllers with ball bearings and when i put it all together, it seems like it can’t open up fully like when it was without the contra spring. I’m already using a dayco 16.8x808 belt which reaches the edge of the variator when the torque driver is without a spring. If your installing the belt without the spring it probably isn't seating in its "normal position". The pulleys need to spin for a bit for things to seat. I think your also talking about using those after market ball bearings butted up to the contra spring? If so then it will depend on your specific setup. The spring requires a certain amount of the available space. Adding ball bearings will use up some of that space also. If you don't have enough space for both then the spring will coil bind and the moveable sheave won't open completely. |
|
