Sprocket Bolts falling out
Posted January 15, 2004 - 05:50 PM
well i went riding yesterday and i have had a problem of a couple sprocket bolts falling out while riding an di have always wenta nd bought new ones so i finally put some lock tight on them and tightened them good. i rode for the first time in a bout 3 months. well i chekced before i rode and all of the bolts were tight. well i rode for about 30 minutes and accellerated out of a turn and heard a nasty crack and clank and the engine stopped an dthe rear tire locke dup and i slid to a stop. well all my bolts must have fell out but one. well my hub broke where it supported the last bolt hangin onto the sprocket and the sprocket looks kinda like a taco now lol. broke a spoke and bent a couple others. i think i will just buy the whole wheel assembly instead of goin through yamaha dealers.
oh i have imagestation but forgot how to post a pic on here using it. i know u get rid of one part of the link but forgot which one. thanks. i will post a pic of it as soon as possible.
Does anyone kno wwhy my bolts kept gettin lose? and has anyone else had this problem? thanks in advance for the info. Ride ON!
Posted January 15, 2004 - 06:13 PM
BTW, DAMN!!! That looks ugly!
Posted January 15, 2004 - 06:30 PM
What did you torque the bolts to?
Posted January 15, 2004 - 06:50 PM
all i know is we just tightened them pretty tight. and used lock tight. used an allen wrench and didn't have an allen socket to measure the torque.
Posted January 15, 2004 - 07:05 PM
Once your bolts become loose, you ride a little bit and the bolts stretch and become fatigued from the torq put on them. So once you locktite them and retorq them the metal is all ready shot and the bolt will continue to stretch and eventually fail, as you found out.
Our solution has been to check your hub, the mounting holes, if they are ok, then buy new bolts, locktite, and torq to spec. Over torqing can stretch the bolts too.
I got lazy on my WR450 and didn't locktite the bolts right away. They got loose. I did the above, new bolts, and have over 1000 miles since then with no problem.
Throw any bolts left as far as you can so they never end up back in your new hub.
Posted January 18, 2004 - 05:30 PM
Posted January 18, 2004 - 07:11 PM
Posted January 21, 2004 - 11:21 PM
Posted January 22, 2004 - 09:20 AM
Posted January 22, 2004 - 12:36 PM
Posted January 23, 2004 - 05:25 PM
thanks for all the info! so anyone have a rear wheel with sprokect and hub and everything in good shape they wanna sell? i figured i could probably buy everything together instead of buyin the individual parts from the yammie dealer and cost me a ton. since my sprocket is a taco now, does anyone have any suggestions on better ratios for the rear sprocket. well thanks again guys
Posted January 26, 2004 - 12:32 AM