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Aligning Trialtech Tensioner


Tioz

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Hi guys..I've finally got to go single speed but have got a problem with setting up the tensioner

The tensioner is this one: http://www.tartybike.../c48p11211.html standard version

The problem comes as it has no pins so I don't know how to set it up correctly on the dropoff :unsure:

Photos to explain

As you can see no pins

imag0195o.jpg

imag0197x.jpg

Could be set like this..

imag0196y.jpg

Or like this

imag0198b.jpg

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There's only really one way it can go on. The best way is to rotate the long arm up as close to the chainstay as possible, then tighten the main bolt. Once you've done that, loosen the little 4mm bolt on the end of the arm and adjust the sprung arm (which is what gives you the tension). Pretty much all there is to it! Not having a pin is a good thing as it allows you to get it a lot more compact and neater.

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There's only really one way it can go on. The best way is to rotate the long arm up as close to the chainstay as possible, then tighten the main bolt. Once you've done that, loosen the little 4mm bolt on the end of the arm and adjust the sprung arm (which is what gives you the tension). Pretty much all there is to it! Not having a pin is a good thing as it allows you to get it a lot more compact and neater.

What sort of angle should there be between fixed arm and sprung arm?

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Whatever you need so your chain's tight. That'll depend on your gear ratio, frame, chain age, etc...

I'll just have to experiment then..great thanks mate :turned:

Also..how do I measure the chain to the right lenght?

Edited by Tioz
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The thing about the TT tensioner is, yes, it has no pins - "yay" if you've ever broken a pin! It uses a rubber washer or sorts to hold itself in place when you tighten it down... your mileage may vary as to how well it holds though.

The angle should be as close to the chainstay as possible without actually causing the upper jokey wheel to touch the sprocket so you can maximise chain wrap.

For minimal hassle you'd probably want the long version if you can't run it right up against the chainstay with the standard, for example. Doing it this way negates any possible issues you may have with the tensioner moving.

With regards to chain length, just get it as short as possible whilst still being able to connect it. You can guestimate it by hand first without the tensioner mounted. You shouldn't need to account for extra length just for the tensioner unless you're gear ratio is so awesome you could almost get by without a tensioner. Add an extra link if you're not sure.

Edited by bip
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The thing about the TT tensioner is, yes, it has no pins - "yay" if you've ever broken a pin! It uses a rubber washer or sorts to hold itself in place when you tighten it down... your mileage may vary as to how well it holds though.

The angle should be as close to the chainstay as possible without actually causing the upper jokey wheel to touch the sprocket so you can maximise chain wrap.

For minimal hassle you'd probably want the long version if you can't run it right up against the chainstay with the standard, for example. Doing it this way negates any possible issues you may have with the tensioner moving.

With regards to chain length, just get it as short as possible whilst still being able to connect it. You can guestimate it by hand first without the tensioner mounted. You shouldn't need to account for extra length just for the tensioner unless you're gear ratio is so awesome you could almost get by without a tensioner. Add an extra link if you're not sure.

from what I can see in the photo of the inspired he's keeping fixed arm and sprung arm practically in line..would it actually manage to give enough tension to the chain this way?The spring pushes "up" so it's not really pushing on the chain that way I seem to figure out

Edit: no I figured it out and it would work fine like that ^^

Edited by Tioz
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Hehe, yeah it's an illusion :)

You can set the spring tension as strong as you like if you don't have the chain threaded or its off the front sprocket. What you do is undo the pinch bolt and rotate the bottom arm clockwise towards the 6-9 o'clock position, the closer to 9, the more tension. Redo the bolt and remount the chain. Make sure the chain line stays good whilst you're fiddling though.

Edited by bip
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Hehe, yeah it's an illusion :)

You can set the spring tension as strong as you like if you don't have the chain threaded or its off the front sprocket. What you do is undo the pinch bolt and rotate the bottom arm clockwise towards the 6-9 o'clock position, the closer to 9, the more tension. Redo the bolt and remount the chain. Make sure the chain line stays good whilst you're fiddling though.

Great m8!

I'll have to buy a chain from halfords today (N) What do the different measurements mean? 1/8", 3/16", 3/32"? Is any of these ok and compatible?

Also do you think I should have got the long version of the tensioner?>_<

Edited by Tioz
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If you don´t know how to set them up,they won´t be any better.and Shimano vee´s are better in general,just saying...

It's not that I don't know how to adjust them..it's that the darn things just move around on their own and keep losing the setting <_<

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