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| *Vultures Knob>>>Cycling |
HUGE PROBLEM - My Chainset's threading is gone - cant remove!!!!? |
My chainset - a reeeally naff stock saracen one, is literally plastered onto my bike as i cant remove my cotterless riveted cheap-*** chainset due to the fact that the thread is gone completely and i cant get the removal tool in it. Is there anything i can do without an angle grinder? Ehsan Another, cheap solution. The same thing happened to me on my commuter bike. I put the locking screw in loosely (backed off one complete turn) and rode the bike for several weeks as a commuter. It eventually worked loose. I was able to keep the screw from completely unscrewing by forcing the cap back on what was left of the threads. When it came loose, I hand tightened the sprocket and road softly home where I could pull of the crank. This method requires you to carry some tools and to be very cautious- (no hard riding up hills or such. You should be able to get it off with a gear puller. use a pickle fork, also known as a ball joint seperator. be sure to put a light film of grease on the tool. i use it when i have that problem and it works all the time. Both answers so far can work. I found one other solution. My threads were not good enough for a removal tool. But I was able to install a self-extracting crank bolt and it did work with great ease. If you can't do this your other options have been listed.but be VERY careful. I'd try riding it off, as just mentioned above. Depending on what type of bottom bracket spindle you have, that may be a really quick solution. A gear puller is hard to use here and easy to screw up the bottom bracket spindle threads which will only cost you more money. The picklefork thing works to wedge them apart, but can also damage the frame or bb cup (or destroy the bearings). Try to slip in a hard plastic or metal plate between the fork and the bottom bracket (you may need to do this anyway for leverage). It'll prevent scuffing and even out the impact pressure. Another thing you could try is to remove the left arm, then remove the bottom bracket if you can access the right-side cup. If you can get it out, you can chunk the bottom bracket along with the crankarm, or attempt to drive the spindle out of the arm with a punch. Also, If you have a small torch, you can heat up the crankarm and see if that helps. Don't apply the flame to the bottom bracket spindle, just the crankarm. If grease starts smoking, back it off. You won't hurt the spindle, and the arm is already trash, so have at it. Occasionally it does help. |
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