vibration getting worse

ive noticed recently that the scoot is vibrating alot more since i installed the mallossi variator with 21gram rollers is this common due to less roller weight to damp out vibrations.i also need some advice on how to get the bearing out from the aluminum case the bearing that goes over the clutch outer shaft looks like the bearing was pressed into the casing.the bearing runs dry not bathed in oil and sounds rough when span by hand would this cause vibes?

Could it be that, being the rollers so light, the variator is not compressing enough and therefore the belt velocity is very low causing the clutch to slip longer that with the usual configuration?

I would try de-glazing the clutch(*) and see if it improves the condition.

* Hold the rear brake VERY tightly so the bike does not roll at all while doing this
Twist the throttle to reach 4500-5000 RPM for about 4 or 5 seconds
You will see a bit of smoke and smell the clutch burn a little; that is ok.

Thanks for the reply ive now put 24g mallossi rollers in with the mallossi variator this seems to have made the issue much better

lesley & John wrote:

<SNIP> I also need some advice on how to get the bearing out from the aluminum case the bearing that goes over the clutch outer shaft looks like the bearing was pressed into the casing. <SNIP>

This may sound highly suspect, but the way my dealer removed that bearing was to heat the area surrounding the bearing very hot by using a 'rosebud' flame tip on a propane torch.

Then when the area was good & hot he slammed the belt case (bearing facing down) on to some protective sections of 2 x 4 or 4 x 4 wood that had been placed on the workbench. The bearing popped out after a few judicious slams.

The wood protects the case edges from being damaged by the aggressive slamming.

Meanwhile the new bearing had been placed in the freezer so that it would 'shrink' and be somewhat easier to reinstall in the still-warm case.

Hope this helps,

Tim

Thanks for the advice Tim that's what solution I had in my head it seems the only way to do that job I think

Cosmic_Jumper wrote:

lesley & John wrote:

I also need some advice on how to get the bearing out from the aluminum case the bearing that goes over the clutch outer shaft looks like the bearing was pressed into the casing.

This may sound highly suspect, but the way my dealer removed that bearing was to heat the area surrounding the bearing very hot by using a 'rosebud' flame tip on a propane torch.

Then when the area was good & hot he slammed the belt case (bearing facing down) on to some protective sections of 2 x 4 or 4 x 4 wood that had been placed on the workbench. The bearing popped out after a few judicious slams.

The wood protects the case edges from being damaged by the aggressive slamming.

Meanwhile the new bearing had been placed in the freezer so that it would 'shrink' and be somewhat easier to reinstall in the still-warm case.

Hope this helps,

Tim

we remove bearing from track bikes this way all the time, we have an oven for it though. Its widely used in the auto industry as well.

cheers tagg just got to wait for the part to come now.