Drive chain tightens as wheel rotates - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 13 (permalink) Old 03-01-2018, 08:54 AM Thread Starter
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Drive chain tightens as wheel rotates

Hi guys, Iím getting this annoying occurrence now, set the tensioner at 30-40mm as spec, now as the wheel rotates the chain get so tight at a point that it wonít let the wheel complete a full spin, as if something is offset, I tried loosening the rear sprocket and spin it again but no luck.
Anyone encountered this ever?
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post #2 of 13 (permalink) Old 03-01-2018, 09:24 AM
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are you sure its not jumped of the front sprocket
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post #3 of 13 (permalink) Old 03-01-2018, 10:13 AM Thread Starter
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I am sure since there is only one tight spot per rotation of the wheel.
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post #4 of 13 (permalink) Old 03-01-2018, 10:18 AM
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How old is the chain? When did you last service the rear hub?

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post #5 of 13 (permalink) Old 03-01-2018, 11:05 AM Thread Starter
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Chain and sprockets are less than a year old and OEM, serviced the hub about 4 months ago.
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post #6 of 13 (permalink) Old 03-01-2018, 11:55 AM
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Quote:
Originally Posted by Nicspeed View Post
Chain and sprockets are less than a year old and OEM
OEM as in came in a box all together? If so you may want to check the actual quality of the chain. My experience was that the Triumph replacement was a cheaper DID O-ring chain and not the VM X-ring I was expecting.

That aside, don't get caught up with when you replaced it (less than a year), because that has little bearing on its lifespan. I replaced my chain (JT Z3 X-ring) in early December and it's already on its way out with just over 9000km on it. It has uneven stretching, probably similar to yours, though not quite so severe.
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post #7 of 13 (permalink) Old 03-01-2018, 12:13 PM
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Chains always wear unevenly. Learned this when I was racing dirt bikes in the desert. Most instructions say to rotate the wheel until the chain is at its tightest point, and take the measurement there. If measuring this way makes the rest of the chain too loose, it's time for a new chain, unfortunately.
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post #8 of 13 (permalink) Old 03-01-2018, 03:35 PM Thread Starter
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Yeah, the mechanic also questioned the auntenticithy of the chain, and added to the high torque of the speedie plus my aggressive riding habits resulted in a warped chain in less than a year of ďabuseĒ I have purchased the chain and sprockets set with bike bandit, he noticed the code stamped on the chain didnít match with what OEM chains, he was not even able to look this code up, so he was dubious of its origins. So he recommended getting this new strength grade chain ($235 installed) that is bot bikes up to 1400ccs so it should last about 17000mi oh well...

Last edited by Nicspeed; 03-01-2018 at 07:55 PM.
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post #9 of 13 (permalink) Old 04-15-2019, 07:23 PM Thread Starter
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Anybody knows the best brand and type of chain thatís in the 1000-1400ccís?
Just looking to see if I can get better color options since the last one my mechanic installed was black and it starts to look like a dirty old chain in a short time.
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post #10 of 13 (permalink) Old 04-16-2019, 03:22 AM
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EK SVX2 is a good chain. Even has a river less master link. Itís a bolt on then snap off the nut and presto a great link . Comes in natural finish or black.

When all else fails, get a bigger hammer!
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