Modern Vespa

Hello,

I was just after some info on burnt out clutch plates..

How and why does it happen? Is it after excessive slipping and/or general wear and tear?

What are the synmptoms of burnt out plates?

Add on question: are modern Oem/stock plates still bonded cork?

The why: the oil that's impregnated in the cork plates gets burned like any other oil - high temps from friction.
The how: worn clutch plates, hot dogging, thrashing, improperly adjusted/installed, dirty gear oil and just old age.
-Yes, the clutch plates are still bonded dense cork - but I'm sure there are other options, especially for hopped up motors

Once the plates start to slip they go down hill really fast. As they slip and wear/burn away and get thinner the slack in the cable goes away to the point that the springs are no longer clamping them with full force. Also face of the plates becomes glazed over and they become more slick so they don't have as much friction.

So, typically they first get glazed slowly with normal wear, then they slip a bit, and then they slip a lot.

If you have to limp the bike home, power is what you need to move but torque is what the clutch has to withstand. Power is torque X RPMs so if you keep the revs up and only enough throttle to keep the clutch from slipping you can still make progress. Limped a bike over a mountain pass that way to get to a place where I could swap the clutch plates.

photos, photos, photos... we love photos

Going to be pulling out the clutch on my Smallframe tomorrow, will take some pictures. My first time doing it on any scoot..

Can anybody tell me the order the plates go? They're soaking in gearbox oil as we speak. There is four cork plates, two thin and one thick also the spring.

Cheers people!

I also bought this flywheel. Please, get back with what solution you choosed

I've forgot about getting a torque wrench for the hub and wheel nuts..

What are the torque settings for the hub and wheel nuts anyway?