Help? Installed 8.307 gears

[panacea]

Hello all, looking for some advice and tips.

Running 139qmb long case, 12" wheels, AT-A9 Cam, 47mm BBK, blue 1k rpm contra & pad springs, 729 17.7 30 belt, I have two different variators to choose from until I can order a performance one. Also running Glixal Performance Clutch, modified.

First, which is the best groove to choose from on the clutch? Because mine has two angles where one is angled and then it kind of goes more straight, and then there's the option of a completely straight angle where it's just straight from point A to point B.

Second, are there any cams that produce more low-end torque?

Third, between two different OEM style variators 87.7 mm, should I use a longer or shorter boss, and how do I stop it from acting too heavy? If I use all five gram weights it acts to light, if I use 3/7 and 3/5 to make a 6 g set up it acts too heavy, but if I use some worn out 6.5s that way out to about 6.3, it's still too heavy, what do?

I installed the 18/46 gears. Looking to be able to rev high enough to produce torque, but heavy enough it doesn't get locked in low gear ratio.

[aeroxbud]

The straighter the angle, the more direct the acceleration. The reason they have a dog leg is so once you have pulled away. The CVT will go into a higher gear. Better for cruising.
The one which is best for you will depend on your riding style.
The more direct drive can also be useful if you have all the power at the top end. You get less of a bog at the transition point.
If you use 3 and 5 gram rollers. That's equivalent to 4g.
Even quarter of a gram can make quite a difference on performance. A tachometer can help with tuning The CVT.
The longer or shorter boss will effect where the belt sits. Ideally you want t it at the top of the rear pulley. This will give you the lower gear to pull away.

[Zino]

I like to have a drive boss and shim that lets the inner edge of the belt just touch the end
this way I start as low on the front pulley as possible for best take off

[panacea]

Sept 9, 2024 7:32:48 GMT -5 aeroxbud said:

The more direct drive can also be useful if you have all the power at the top end. You get less of a bog at the transition point.
If you use 3 and 5 gram rollers. That's equivalent to 4g.
Even quarter of a gram can make quite a difference on performance. A tachometer can help with tuning The CVT.
The longer or shorter boss will effect where the belt sits. Ideally you want t it at the top of the rear pulley. This will give you the lower gear to pull away.

So, essentially the dog leg channel would be good if I was light looking to push heavy on my CVT, but the straight angle will help narrow my shift or power change in RPMs.

[panacea]

Sept 9, 2024 7:50:24 GMT -5 Zino said:

I like to have a drive boss and shim that lets the inner edge of the belt just touch the end
this way I start as low on the front pulley as possible for best take off

I used the longest boss I have to match your picture because I don't have any real shims. Still just too heavy on the Variator. Or too soft on the clutch, idk.

[panacea]

Needless to say, I think the A9 cam I bought meant for 50mm kits just doesn't produce enough low end torque that it attempts to hit by RPM, so I'll be upgrading to 50mm when I can. Until then, I think I found a decent "80cc" cam that will boost my low and mid torque