Sun May 23, 2021 1:22 pm

Hooked
Vespa ET4 125cc , Vespa px cutdown 150cc in the making.
Joined: 21 Jan 2018
Posts: 331
Location: Wales
 
Hooked
Vespa ET4 125cc , Vespa px cutdown 150cc in the making.
Joined: 21 Jan 2018
Posts: 331
Location: Wales
Sun May 23, 2021 1:22 pm linkquote
Put a new SIP clutch assembly into my 2T Stella today.
Same teeth as old one 21.
Pulling clutch in no noise and revving in neutral fine.
As soon as I let clutch out in drive it makes a whirring noise as I drive along not had chance do more than a 100 yards in first and second gear.
Could this just be new teeth wearing in with the drive teeth or do I need to worry.
Sun May 23, 2021 10:00 pm

Hooked
PX 200
Joined: 25 May 2016
Posts: 312

 
Hooked
PX 200
Joined: 25 May 2016
Posts: 312

Sun May 23, 2021 10:00 pm linkquote
Re: Clutch change
grahamlml wrote:
Put a new SIP clutch assembly into my 2T Stella today.
Same teeth as old one 21.
Pulling clutch in no noise and revving in neutral fine.
As soon as I let clutch out in drive it makes a whirring noise as I drive along not had chance do more than a 100 yards in first and second gear.
Could this just be new teeth wearing in with the drive teeth or do I need to worry.
Sounds familiar...

Had the same problem... I thought it was a badly machined part and swapped it out for an OEM one, problem went away... but realised i actually installed the wrong size

Theres 2 sizes for the same teeth number (40 and 42mm) which is matched to the primary...

Oh I'm assuming its a cosa2 style clutch... and not sure its the case for 21 teeth though...
Tue May 25, 2021 1:08 am

Hooked
Vespa ET4 125cc , Vespa px cutdown 150cc in the making.
Joined: 21 Jan 2018
Posts: 331
Location: Wales
 
Hooked
Vespa ET4 125cc , Vespa px cutdown 150cc in the making.
Joined: 21 Jan 2018
Posts: 331
Location: Wales
Tue May 25, 2021 1:08 am linkquote
Thank you 108 I shall get chance to check later in the week.
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