Pro's/Con's of eccentric chain tensioners?? - Triumph Forum: Triumph Rat Motorcycle Forums
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Tiger Workshop (archive) Shop Talk, Ideas, Hints, and Tips for smooth running for the 885 - 885i - 955i & 1050i Tigers (Threads in this sub-forum will be progressively moved to their relevant model sub-forum)

 
 
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Old 07-15-2009, 01:52 AM   #1 (permalink)
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Pro's/Con's of eccentric chain tensioners??

I noticed that the 955i only had this eccentric adjustment for a few years before going to a standard slide/lock system.

Is there any benefit to the eccentric swing arm (other than being a cool deep-blue anodized color)?

On a whim, could you actually flip the eccentrics upside-down to lower the rear end?

I also can't figure out exactly how to use them... my owners manual says to loosen the left OR right adjuster clamp bolt. Do they mean AND?
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Old 07-15-2009, 03:53 AM   #2 (permalink)
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Quote:
On a whim, could you actually flip the eccentrics upside-down to lower the rear end?
Yes.

Quote:
I also can't figure out exactly how to use them... my owners manual says to loosen the left OR right adjuster clamp bolt. Do they mean AND?
AND not OR

FWIW, my eccentric is upside down to lower the back. You will probably need to sod around spacing the chainguard rear mount to gain clearance.

Cons: I reckon my wheel alignment goes out every time I try to adjust the chain and of course the alignment marks don't align when you've swivelled the eccentric. I did punch new marks when I first got the bike, the dealer having swivelled for me. It struck me only yesterday when checking the alignment - were the wheels in line when I originally punched the new marks? Doh!
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Old 07-15-2009, 09:52 AM   #3 (permalink)
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Ouch! Good point! Looking at either side I see no visible marks for adjustment. But, the chain is perfect as is, so I may just leave it be until the next oil change and fiddle with it then.

Thanks for the info! Depending on how road-riding works out I may drop the rear end as you have.
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Old 07-20-2009, 05:49 AM   #4 (permalink)
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Originally Posted by ChazzyB View Post
Cons: I reckon my wheel alignment goes out every time I try to adjust the chain and of course the alignment marks don't align when you've swivelled the eccentric. I did punch new marks when I first got the bike, the dealer having swivelled for me. It struck me only yesterday when checking the alignment - were the wheels in line when I originally punched the new marks? Doh!
Chazzy,

Do you slacken off the spindle when you adjust the chain as this almost guarantees that the wheel will go out of line?

And mine was out of line when I bought it - after the dealer I got it from had changed the rear tyre......
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Old 07-28-2009, 07:18 AM   #5 (permalink)
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It is easier to get out of alignment with them, but once you get the hang of it, tightening your chain takes about 60 seconds. I think the setup is great.
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