Modern Vespa

Greetings to all.
I recently put some 12.5 gr Dr. Pulley rollers on my 2011 Vespa GTS with the precaution of putting the 1.3 mm variator separation washer, I already had the Malossi clutch installed. In the test with the stand on, the clutch began to slip, releasing debris from the clutch shoes. Can anyone give me some advice. Thank you

Posting this in the General area would have got more responses.


My malossi clutch is fine with all rollers (12,13 malossi, 14 standard) and sliders (13) that I've tested.

You say you tested on the stand ... did you mean with the transmission cover on or off?

Can you show photos of the clutch damage?

Do you have the normal 3 white springs in the clutch? or did you swap to yellow or red? How about the big contra spring?

You also said your Dr Pulley are called Black Diamon but I can't find Black Diamon on their website?

Thanks for the response. When I talk about the support I am referring to the motorcycle planted with the rear wheel free, as for the springs, I don't know which one it has, since the clutch was installed by the mechanic. I didn't take any photos of the clutch shoes, I just sanded them with fine sandpaper. Sorry I meant Dr. Pulley Black Perl