Is it possible that the master link on a chain tightens as heat builds up? I still have a weird vibration on my k6. Chain tension is fine, no tightspots as well when I checked it when cold . BUT,,, once the bike’s been driven a short while the vibration starts at high speed… I have a feeling that the masterlink is too tight … especially when warmed. It looks like from above that the chain has a slight wobble upwards and downwards in it when I feel the vibration at speed. I hope by replacing the link the vibration is sorted…!!!!
Chain vibration???
k6guy
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Is it possible that the master link on a chain tightens as heat builds up? I still have a weird vibration on my k6. Chain tension is fine, no tightspots as well when I checked it when cold . BUT,,, once the bike’s been driven a short while the vibration starts at high speed… I have a feeling that the masterlink is too tight … especially when warmed. It looks like from above that the chain has a slight wobble upwards and downwards in it when I feel the vibration at speed. I hope by replacing the link the vibration is sorted…!!!!
Chainslack ±30mm. Tire alignment is sorted as well.
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18,605 Posts
is it pure slack in the chain? Also put it on a rear stand and in N and spin the rear tire and look for any type of kinks in the chain or it snagging the rear sprocket anywhere. Ride your bike and hop off it and grab the chain and see how hot it is to test your heat theory 
is it pure slack in the chain? Also put it on a rear stand and in N and spin the rear tire and look for any type of kinks in the chain or it snagging the rear sprocket anywhere. Ride your bike and hop off it and grab the chain and see how hot it is to test your heat theory
On my "TO DO" list for today
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When you test your chain slack you shouldn't have to push hard at all. We have some guys complain about wrecked sprockets then state the chain slack was perfect as when they push up then pull down it's the right distanct, but whne i ask if they check the slack with one finger there is a long silence on the phone. Only a few admit they use about 40-50 lbs of pressure to test it. Which is way too much. Should be nice and pure slack with little pressure to measure it.
Post up if you figure out the problem.
Post up if you figure out the problem.
I will
Can somebody show me a clip of the play in their chain? With the bike on its stand, there's ± 30-35 mm play in the chain, without pressing hard against the chain. I took the bike tonight for a fast ride without a pillion, only 15 miles far. At 130mph their was a very small vibration when going against the strong wind, but MUCH better then with the pillion on.
I tested the chain while still hot, but no tightspots.
Can it be that I must make the tension on the chain that much less seeing as it gets worse with a pillion and can the chain tension tighten that much when going at speed??? I'm too afraid with my luck the chain will come off at speed!!!
hammer:cryinghmyhmy:cursingI weigh 210 pounds, so maybe the chain gets a lot of tension when at speed???:confused
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18,605 Posts
Are you sure it's the chain causing it? are the tires balanced and could a rim be dented? 1.5 inches is too much and you don't want to error at all. Too lose will destroy the sprocket just as well as too tight. We have had several people call up stating sprockets suck and crack between the teeth and spread out between the teeth. This happens from a chain that is too loose. when you crack it open the chain will "slap" the sprocket and cause this. You want your oem specs on it. There is enough room in oem specs that you should stay there.
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77,400 Posts
30mm is barely over 1 inch and you are a little heavier than I am. Also it helps if you flip the axle so that the nut is on the right side of the bike. My chain can almost touch the swingarm when I lift it. Don't worry about the chain coming off. I have about 13k miles on this one so far.:cheersCan somebody show me a clip of the play in their chain? With the bike on its stand, there's ± 30-35 mm play in the chain, without pressing hard against the chain. I took the bike tonight for a fast ride without a pillion, only 15 miles far. At 130mph their was a very small vibration when going against the strong wind, but MUCH better then with the pillion on.
I tested the chain while still hot, but no tightspots.
Can it be that I must make the tension on the chain that much less seeing as it gets worse with a pillion and can the chain tension tighten that much when going at speed??? I'm too afraid with my luck the chain will come off at speed!!!
I weigh 210 pounds, so maybe the chain gets a lot of tension when at speed???:confused
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77,400 Posts
Corey the factory specs are way too tight on these things. I believe it's 0.6 to 0.8".
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Don't quote me but i believe most all sportbikes should be right under 1". like .9. most specs are around .8-1.2" If those are the specs that seems tight to me, but for liability reasons don't hold me to it and always do what the manufacturer recommends hehehe I will state that personally i do an eyeballed inch on my own bikes. Same like i do all my bolts "arm snug, arm tight, arm damn tight" because my arm is a highly machined torque wrench
Can it almost touch your swingarm with your weight on the bike when testing it?
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77,400 Posts
No that's with it on the stand only.
What's the reason for flipping your axle?
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77,400 Posts
When you torque it down it pulls the axle snug against the adjusters. On the left side it pulls it away from the adjusters and makes the chain tighter than you set it.
True... never thought about it that way. Thanx
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