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help please - axle twitching under throttle

3404 Views 24 Replies 10 Participants Last post by  sleepy129
so are we using this forum now or the old one?

i just went for a quick ride around my block and i noticed that whenever i give it around half throttle or more the left axle twiches back and forth, sort of violently. its the left side where the sprocket is. im guesing the chain is pulling it foward and the axle bearing is letting it move. im pretty sure i need new axle bearings...your thoughts?

its a stock swinger w/+4 lonestar

thanks

my bike already sold on ebay so i need to fix this asap lol
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so are we using this forum now or the old one?

i just went for a quick ride around my block and i noticed that whenever i give it around half throttle or more the left axle twiches back and forth, sort of violently. its the left side where the sprocket is. im guesing the chain is pulling it foward and the axle bearing is letting it move. im pretty sure i need new axle bearings...your thoughts?

its a stock swinger w/+4 lonestar

thanks

my bike already sold on ebay so i need to fix this asap lol

My first guess (as is yours) would be that the carrier bearings are shot. Make sure that your swing-arm pivot bolt isn't loose also, that could be bad!
Jack up the rear end and grab the wheel on the sprocket side.See if you can move the axle in any direction.I bet you need to replace the bearings in the carrier
Jack up the rear end and grab the wheel on the sprocket side.See if you can move the axle in any direction.I bet you need to replace the bearings in the carrier

ok i jacked it up and didnt notice any play near the carrier but i did notice the nut holding on my hub was loose! it doesnt wobble any more while jacked up but ill know for sure after a quick ride. i got it tight now with a cotter pin. thank god i hope this was the problem, it would be quite an inconveinent time for something like this to need to be replaced. lol

its dark but i might still take it out real quick before my neighbors call the cops lol



thanks
i think its doing it worse now :huh:

my chain is pretty loose...
Have you checked the swingarm bearings? Maybe the one on the left needs to be replaced.
how hard is it to replace the bearings myself?

good place to order from?


its like a jerking type thing, everytime it makes like a sort of popping noise it jerks, is it possible the chain is jumping teeth? it is pretty loose
i was just thinking your chain while i was reading this. you said your chain is very lose can you adjust it to the proper slack? to check if your chain is stretched too much grab it in the center of the rear sprocket and pull it out. you shouldnt be able to pull it off the sprocket more than half the tooth.
well theres nothing really to adjust. im gunna go grind a link out of it
im not sure what you mean by that. you do know you can adjust the length of your chain dont you?
Yah you can adjust your bearing carrier and take the slack out of the chain. Try doing that before taking links outta the chain.
can be 1 or a combination of these
bad chain adjustment ..
loose swingarm bolt/nut..
poorly adjust axle lock nut
bad carrier bearings,
bad swingarm pivot bearings/bushings
(& least likely) sprocket hub is shot /splines wornout
for some reason i didnt think i could tighten the chain on this bike :huh:

how do i?
you losen the carrier and then rotate it in the swingarm.
Loosen the pinch bolts on the carrier housing and insert a Bar (Phillips screwdriver) into the holes in the side of the carrier and rotate the carrier until the chain slack is taken up. Do not over tighten the chain. A chain should be no tighter as when the counter shaft sprocket, front swingarm pivot. and rear axle make a straight line. Allow for slight play at this point and you will be good. Retighten pinch bolts and you're done.
awesome, i guess thats why everyone likes honda style carriers. my raptor was a pita to tighten. loose chain was the problem. perfect now i just wipped a couple donuts out front of my house :D

thanks everyone
hmm,. its a good idea to own & read the service manual :lol:
right ...silly me :rolleyes:
I was going with the assumption that knowledge is a good thing!!! :lol:
yeah why should i bother looking it up when i can just ask one of you guys :D lol

but seriously this site is a great resource and i truly appreciate everyone's help with my silly questions.
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