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Old 02-01-07, 02:04 PM   #1
Cot Du Trent
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Stripped my crank spindle...

I dunno how... maybe I had the crank remover in wrong or something, but now it doesn't matter how far in it is, I can't pull the crank off. Any tips for getting it off? I didn't do a search before posting, so if this is a frequent post then I'm sorry for wasting your time. Just tell me to do a search and I would be happy to! Thanks for any information you can provide!

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Old 02-01-07, 02:34 PM   #2
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Depending upon the crank type, you might be able to use a conventional wheel puller to ger 'er off. Many of the larger auto parts stores will lend or rent a wheel puller for free or very inexpensively. This is probably the least invasive approach as compared to prying, hammering, etc. Good luck and let us know how it turns out.
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Old 02-01-07, 02:58 PM   #3
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I tried a Cheap wheel puller (Known in some circles as a 'pickle fork' once. The pickle fork deformed. O_o

Is this a square taper crank? Are you having trouble with the threads on the crank or on the spindle? A little more information would be helpful in getting a better diagnosis/solution.
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Old 02-01-07, 02:59 PM   #4
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on a square taper - I had one that came off suprisingly easily by "reasonably gently" hammering a wedge between the crank arm and the bb shell. It probably wouldn't be a good idea to use a metal wedge, but I did no damage to anything with wood.

FWIW, I tried the technique of taking off the bolt that anchors the arm to the bb spindle (forget the name) and pedaling real hard up a hill hoping it would loosen to no avail.
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Old 02-01-07, 03:15 PM   #5
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Sorry for the confusion. Yes, it is a problem with the threading on the crank.
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Old 02-01-07, 03:17 PM   #6
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Never heard of that. How does it work, exactly?
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Old 02-01-07, 03:19 PM   #7
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Ok, I'll try that! Just out of curiosity, since I've got the bolt off, do you think it would be just as easy to put my feet against the frame and pull really really hard? Or is that strongly ill-advised?
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Old 02-01-07, 03:47 PM   #8
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Ok, I'll try that! Just out of curiosity, since I've got the bolt off, do you think it would be just as easy to put my feet against the frame and pull really really hard? Or is that strongly ill-advised?
It's worth a try, but I didn't have success with it

Also I would think you could potentially damage the frame that way, or your goody bag if it did come off.
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Old 02-01-07, 03:53 PM   #9
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Btw, classic cause of what happened to you: forgetting to take the crank bolt washer out before screwing in the crank puller. So the puller is pushing against the washer rather than the end of the axle. Net result, the only thing that can come out is... the inner threads of the crank.

Automotive pullers (fan belt pulley puller, for example) can sometimes be used, if you can get the plunger to fit into the crank arm hole; it may help to put the crank bolt in loose, and have the puller push against that instead.
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Old 02-01-07, 04:02 PM   #10
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Mleh, sometimes I've just seen crappy threading. Typically if Pedal-threads end up stripped on a bike not otherwise abused, Removal threads end up stripped. That said Pulling on the frame would qualify as a Bad thing.

If you want to re-use the crank arm, and I wouldn't reccomend it if I could just afford a new arm, You've got a few options. First is rolling the dice with a pickle fork. I don't care for em. Some people say if you put the crank bolt back on, but kinda loose, then ride good on the pedals you'll loosen it up. Obviously if you ride TOO hard the spindle and or crankarm get trashed... A trainer might work good for this. I've never tried this but it sounds promising.

All else fails just cut the darned arm off... No sense dealing with continuing aggrivation every time you want to remove the thing.
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Old 02-01-07, 04:17 PM   #11
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When I did this to myself and learned the hard way about hidden washers, I assumed that the crank was toast. I used a socket set extension and a hammer and from the other side of the frame, Gently tapped the crank off by working around the crank a little at a time and hitting the inner ring mounting bolts. Picture rocking the crank off, a little on one side, then a little on the other. I can't promise anything but it worked for me.
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Old 02-01-07, 06:35 PM   #12
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If you want to re-use the crank arm, and I wouldn't reccomend it if I could just afford a new arm, You've got a few options. First is rolling the dice with a pickle fork. I don't care for em. Some people say if you put the crank bolt back on, but kinda loose, then ride good on the pedals you'll loosen it up. Obviously if you ride TOO hard the spindle and or crankarm get trashed... A trainer might work good .
I thinkt his would be the least destructive and cheapest method. Square taper BB's can be had for $26. Like ultegra level ones.
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Old 02-01-07, 07:38 PM   #13
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Find a socket that just fits inside the square of the crank arm. Stand the socket up on a concrete floor, place the spindle of the bb on top of the socket and have someone hold the bike. Now hammer the crank arm off with a 2.5 pound sledge and a flat punch. Hit as close to the BB shell as you can. Use a large broad washer between the punch and the crank arm to prevent damage to the crank arm.
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