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Old 02-08-2010, 04:03 PM   #1
zombiejesus
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RF 600R drive chain tensioner problem

My RF has the kind of tensioner setup where you turn a little allen bolt to move the axle front and back, on both sides of the swingarm. I can set the tension perfect on the side with the chain, when I go to adjust the tensioner on the other side to straighten the axle, the allen bolt loses it's grip and starts backing out. Any ideas? I was able to get the axle straight but the chain could only move about an inch at it's tightest point, spec is 1.2 to 1.6 inches. Is that close enough, or way too tight?
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Old 02-08-2010, 04:04 PM   #2
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in my opinion 1" slack is too tight, especially if you ride track.
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Old 02-08-2010, 04:55 PM   #3
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Well, once I tighten the axle nut the drive chain tightens up a whole crapload. This is starting to annoy me. The manual says to adjust the tension with the nut loose, then tighten the nut. Should the drive chain not tighten up when I torque down the axle nut?
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Old 02-08-2010, 04:57 PM   #4
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Also, should I remove the tensioners, spin the bolt all way in then reinstall them? Or what should I do? Now both tensioners start backing out before the chain is loose enough.
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Old 02-08-2010, 05:01 PM   #5
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Quote:
Originally Posted by murderface View Post
Well, once I tighten the axle nut the drive chain tightens up a whole crapload. This is starting to annoy me. The manual says to adjust the tension with the nut loose, then tighten the nut. Should the drive chain not tighten up when I torque down the axle nut?
Tighten the axle nut very loosely with your hand. May be that there is a lot of side to side between your swing arm. That and while your wheel is loose make sure you push it forward as far as you can. and make sure it is adjusted evenly on both sides, then push it forward again. There may be some play in your adjusters.
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Old 02-08-2010, 05:02 PM   #6
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Once it is tight, check to see if there is any side to side movement of the wheel. You might have some bad wheel bearings.
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Old 02-08-2010, 07:16 PM   #7
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I used a rubber mallet to pound the tensioners further into the swing arm with the tensioner bolts backed out, I was able to get the tension set with the wheel straight once I torqued the axle nut to spec. A little on the loose end, 1.5 inches on the tightest part of the chain. I'll mess with it a little more tomorrow.
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Old 02-08-2010, 07:18 PM   #8
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Quote:
Originally Posted by GABRIEL View Post
Tighten the axle nut very loosely with your hand. May be that there is a lot of side to side between your swing arm. That and while your wheel is loose make sure you push it forward as far as you can. and make sure it is adjusted evenly on both sides, then push it forward again. There may be some play in your adjusters.
No play in the adjusters, I had to pound pretty hard to get them to move.
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Once it is tight, check to see if there is any side to side movement of the wheel. You might have some bad wheel bearings.
Nothing's loose, I think what happened is I moved one of the tensioners out of it's place a little when I put the axle shaft back in, I was having trouble getting it to line up.
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Old 02-08-2010, 07:20 PM   #9
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I'd loosen the nut just enough to move the axle.Too loose and you will be fighting it like you mentioned above.

How much difference is between your tight and loose spots in the chain?
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Old 02-08-2010, 07:26 PM   #10
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Quote:
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I'd loosen the nut just enough to move the axle.Too loose and you will be fighting it like you mentioned above.

How much difference is between your tight and loose spots in the chain?
Just a guess, but I'd say between a quarter to half an inch. That's why I'm gonna try to tighten it up a little more tomorrow, I went around the block a few times to see if the tensioners would loosen or tighten at all, but by the time I got back it was raining and I put all the tools up.
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Old 02-09-2010, 10:06 AM   #11
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Quote:
Originally Posted by CaligoneTx View Post
I'd loosen the nut just enough to move the axle.Too loose and you will be fighting it like you mentioned above.

How much difference is between your tight and loose spots in the chain?

agreed
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