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Old 10-13-2012, 07:42 PM   #1
maigashi OP
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Chain tension

Measurement says no load. Does this mean on the centre stand or just standing there
Thanks
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Old 10-13-2012, 08:48 PM   #2
Hucker
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Two parts:
1. Side stand.
2. Looser than you think. DAMHIK

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Old 10-14-2012, 01:54 AM   #3
Hicks
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Quote:
Originally Posted by maigashi View Post
Measurement says no load. Does this mean on the centre stand or just standing there
Thanks
it doesnt make much difference IMHO, but on sidestand it's according the Riders manual and REPROM.
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Old 10-14-2012, 06:06 AM   #4
GH41
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The manual probably says side stand because the center stand is not standard equipment. I do mine on the center stand. It is all but impossible to find the tight spot any other way. All bikes will not be the same but the tight spot on mine is a half inch tighter than the loose spot. GH
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Old 10-14-2012, 06:14 AM   #5
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The tightest spot is when the rear axle, swing arm pivot point and counter shaft sprocket are all in a line. Achieve that anyway you like.
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Old 10-14-2012, 07:59 AM   #6
maigashi OP
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How tight should the chain be at the tightest spot
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Old 10-14-2012, 10:00 AM   #7
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Originally Posted by maigashi View Post
How tight should the chain be at the tightest spot
30-40 mm with motorcycle on the side stand, this just about lines up those three points, if the bike is heavily loaded or on the center stand I would go closer to the 40 mm
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Old 10-14-2012, 11:46 AM   #8
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Originally Posted by JRP View Post
The tightest spot is when the rear axle, swing arm pivot point and counter shaft sprocket are all in a line. Achieve that anyway you like.
Yeah, buts chain don't always wear evenly so you should check for the tightest spot along it's entire length, too.
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Old 10-14-2012, 12:00 PM   #9
Endurodude
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The correct way is probably to check tension over various parts of the chain. Personally, I have the bike on the side stand (even though I do have a centre stand) and tighten it until it touches the swing arm. That seems to correspond to the correct chain tension suggested in the manual. I do this unloaded.
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Old 10-14-2012, 02:23 PM   #10
GH41
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The tightest spot is when the rear axle, swing arm pivot point and counter shaft sprocket are all in a line. Achieve that anyway you like.
JRP, you are missing something. When they say adjust at the tightest spot they mean to locate the tightest spot by rotating the wheel and checking the slack in the chain. The spot with the least slack is the tightest spot. Remember that a hot chain will be tighter than a cold chain. I you are not sure or unable to find the tight spot I would adjust to the long side of the recommended range. GH
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Old 10-14-2012, 02:47 PM   #11
CheckerdD
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Put it on the sidestand with the bike in Neutral. I have a clear plastic ruler where I have taped the limit which is 35-45 mm between top and bottom without yanking the chain. I also loosen the axel nut so it slides more easily. I then loosen the lock nuts and take one turn up or down till the wrench stops against the top or bottom (actually only a quarter turn), each side till it comes within specification and retighten the lock nuts and axel nut - 100 ft pounds torque. And recheck to see if it's still within 35-45 mm. Note I stop adjusting as soon as I show I am within the limit. Usually I am a mm or 2 of 40. If you try to get it to an exact number of mm's you will go nucking futs. After that move the chain up and down with your hand to get a feeling where the right spot is without measuring. As pointed out by others it's looser than you think and about where the chain hits the swingarm. . It's better to err on the side of too loose rather than too tight.
You will see that you need to adjust very little untill the chain is starting to age then you might move it as much as an 1/8 th to 1/4 of an inch. Dave
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Old 10-14-2012, 11:39 PM   #12
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Originally Posted by GH41 View Post
JRP, you are missing something. When they say adjust at the tightest spot they mean to locate the tightest spot by rotating the wheel and checking the slack in the chain. The spot with the least slack is the tightest spot. Remember that a hot chain will be tighter than a cold chain. I you are not sure or unable to find the tight spot I would adjust to the long side of the recommended range. GH
I'm not missing anything, I simply said that is the spot where the chain will be tightest , if the axle moves up or down from that point the chain will get looser.
Adjust it anywhere you like (manual says on the side stand) just make sure you have at least some play where ever the chain is tightest. And yes, turn the wheel to check for tight places in the chain itself.
This is not rocket science
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Old 10-15-2012, 04:51 AM   #13
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Originally Posted by GH41 View Post
Remember that a hot chain will be tighter than a cold chain.
How comes?

BTW, having a center stand and not using it seems a bit weird, but well you will know why. My personal hint, use the center stand if you have one and adjust as loose as possible while being inside the given limit or even a fraction out of limit..
Most people tend to adjust to tight.

Another hint: before tightening the nut of rear axel slide a big screw driver between chain and sprocket and push the wheel forward with force, jam the screw driver between chain and sprocket. In this position push the brake pedal and tighten the nut of the rear axle. This procedure ensures that when you tighten the nut you wont pull the rear axel away form the tension screws/tension brackets and the chain tension does not change after tightening the rear axle/nut.
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Old 10-19-2012, 12:21 PM   #14
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BTW, having a center stand and not using it seems a bit weird, but well you will know why. My personal hint, use the center stand if you have one and adjust as loose as possible while being inside the given limit or even a fraction out of limit..
I respectfully disagree.
The chain will be tighter on the side stand than on the center stand because on the side stand the drive gear is closer to the line-up position between sprockets and the swingarm pivot. If you adjust looser than spec while the bike is on the center stand your chain will be too loose.
Under load (esp. heavy) while riding the chain will often be looser than when the bike is on the side stand because your suspension is compressed and the swingarm is beyond the line-up point (hope that makes sense).
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Old 10-19-2012, 01:15 PM   #15
GH41
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I respectfully disagree.
The chain will be tighter on the side stand than on the center stand because on the side stand the drive gear is closer to the line-up position between sprockets and the swingarm pivot. If you adjust looser than spec while the bike is on the center stand your chain will be too loose.
Under load (esp. heavy) while riding the chain will often be looser than when the bike is on the side stand because your suspension is compressed and the swingarm is beyond the line-up point (hope that makes sense).
With my normal load in the Jessie side and Vario top case my suspension is not compressed at all on the side sand. I agree that the geometry change when the swing arm moves is real but with the center to center difference of only 3 1/4" between the sprocket and swing arm pivot the change is minimal. Not enough to matter how the bike is propped up when adjusting the chain. Lets just agree to disagree. GH
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