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GP200 Clutch issues

Technical help for Series one, two and three Lambrettas. Models include the Li, Li Special, TV, SX, GP, Serveta and API/SIL models

GP200 Clutch issues

Postby Dave5000 » Tue Aug 07, 2018 6:09 pm

I've recently bought an "off the peg" factory built gp200 engine
After much tinkering with the clutch cable I'm still having problems
When I get the bike up to around 50mph in 4th (so the Speedo says but your guess is as good as mine as to actual speed) the is a note change in the engine, sound like it's back in 3rd. I think it's clutch slip but I can't slacker the clutch off any more without getting drag. The bike doesn't want to go any faster.
I had an old series 1 150 engine before which was a built from scratch and it burnt it's clutch out after about 150 miles
Have I got a crap clutch or have I another problem. Any help much appreciated
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Re: GP200 Clutch issues

Postby hullygully » Tue Aug 07, 2018 6:36 pm

probs just the Indibum clutch plates :o , change to surflex or 'last you a life time' reedspeed reds. 8-)
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Re: GP200 Clutch issues

Postby Fast n Furious » Thu Aug 09, 2018 1:59 am

Whilst you've got he chaincase side off, check the cush drive for potential problems.
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