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TY80 chain length


pheonix_tat
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Hello all, this is my first post so please be gentle. I know nothing about trials biking. I recently bought a TY80 for my son to use on my parents farm. It was in full working order but a bit tatty, so it's been stripped down cleaned, full respray, replacement stainless bolts, new cables etc. All was going well until I went to fit the new chain and found it is approximately 6 inches longer than the old one. I've checked the Haynes manual and it should be the right on for a standard bike, DID 420 106. The rear sprocket is standard 41 T however the front sprocket is 13 T (rather than standard 12T) but surely this can't account for such a difference in length. I don't see any other modifications. From memory I think the existing is 96 link. Any help appreciated. Should I shorten the new chain to fit or am I missing something? Many thanks, Rich

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Hello all, this is my first post so please be gentle. I know nothing about trials biking. I recently bought a TY80 for my son to use on my parents farm. It was in full working order but a bit tatty, so it's been stripped down cleaned, full respray, replacement stainless bolts, new cables etc. All was going well until I went to fit the new chain and found it is approximately 6 inches longer than the old one. I've checked the Haynes manual and it should be the right on for a standard bike, DID 420 106. The rear sprocket is standard 41 T however the front sprocket is 13 T (rather than standard 12T) but surely this can't account for such a difference in length. I don't see any other modifications. From memory I think the existing is 96 link. Any help appreciated. Should I shorten the new chain to fit or am I missing something? Many thanks, Rich

Just shorten it to the right length and let the little lad go play!

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