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Tight chain

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

Tight chain

Postby shawit » Fri Feb 06, 2026 7:33 pm

I have fitted a new IWIS 80 link chain ( bought from a reputable source ) to replace the chain on my TV175. The sprockets are the original 46 x 15. With the new chain there is zero free play. Is it inadvisable to use this chain?
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Re: Tight chain

Postby Fast n Furious » Sat Feb 07, 2026 5:33 pm

Running a tight chain is only going to end in tears for sure.
Something doesn't sound quite right here.
I would suggest that you do a physical count of both sprocket teeth and a link count of the chain to confirm they meet expectation.
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Re: Tight chain

Postby shawit » Mon Feb 09, 2026 11:09 pm

Thanks for the reply.
Everything has been double checked including confirmation of there being 80 links on the old chain. Spoke to supplier of the chain. Refund offered. It wasn't the first time he'd heard of this. I also found others describing the same problem with tight IWIS chains on 2 other websites.
Expecting another manufacturer's 80 link chain this week which I'll try this weekend. I'll update when fitted.
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Re: Tight chain

Postby Fast n Furious » Mon Feb 09, 2026 11:25 pm

Never had an issue with Iwis chains myself.
Do you think the chain you had could have been a fake?
Renold or Tsubaki chains are good alternatives.
Just don't use a Rolon chain. They really are pants.
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