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removing stripped crank arms...

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removing stripped crank arms...

Old 09-05-11, 01:53 PM
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marley mission
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removing stripped crank arms...

what say you on this tool:

https://www.youtube.com/watch?v=CpXv1XQ6prc

what i have done in past is that if the other arm and cup are off then its a punch and hammer deal - but i think this would work on regular square tapers - i emailed the seller and he said he wasnt sure it would - so what do u guys think
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Old 09-05-11, 01:54 PM
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I think I'd find a gear puller...
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Old 09-05-11, 01:59 PM
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i'm more interested in if the tool would work as opposed to what else would work - with a gear puller -the adjustable arms can be tough to configure depending of the design of the crankset - no?

edit: no offense to your response - but this tool just seemed to be so simple in what it could do in the case of stripped square taper threads - however - will it fit on a road bike crank arm
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Old 09-05-11, 02:24 PM
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It will not work on a road bike crank, as there is no slot between the arm and chainwheel like on that BMX crank. It may work on the non drive side? The best was is to use drill chuck remover wedges . They are cheap and work like a charm..

https://www.jacobschuck.com/drill-chuck-install.asp

Last edited by Capecodder; 09-05-11 at 02:31 PM.
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Old 09-05-11, 03:22 PM
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can you recommend what size wedges? i looked on ebay and it seems there are various sizes
also - you just knock the wedges towards each other and it forces the arm off?
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Old 09-05-11, 03:51 PM
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Originally Posted by marley mission View Post
can you recommend what size wedges? i looked on ebay and it seems there are various sizes
also - you just knock the wedges towards each other and it forces the arm off?

#3 or 3JT is what you need.... Yes, just tap the wedges towards each other, and the arm will slide right off with no damage.
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Old 09-05-11, 04:33 PM
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any recs where to get a pair - only ones i found were from a UK seller
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Old 09-05-11, 05:07 PM
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Originally Posted by marley mission View Post
any recs where to get a pair - only ones i found were from a UK seller
Drillspot is your best bet..... but here are two.


https://www.victornet.com/report/Chuc...dges/1319.html

https://www.drillspot.com/products/42...ck_3_wedge_set

Last edited by Capecodder; 09-05-11 at 05:14 PM.
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Old 09-05-11, 05:56 PM
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thanks capecodder - good stuff
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Old 09-05-11, 06:00 PM
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Originally Posted by marley mission View Post
thanks capecodder - good stuff
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Old 09-05-11, 06:22 PM
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i love bike tools - honestly - never heard of this approach - have i been under the BF rock or what?
thanks again
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Old 09-05-11, 06:35 PM
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Originally Posted by marley mission View Post
i love bike tools - honestly - never heard of this approach - have i been under the BF rock or what?
thanks again
Not to worry, a lot of others learned something today as well. This is just a fantastic way to remove a stripped crank without damage, and reuse it. If you think about it, a crank is pressed on just like a drill chuck on a arbor.

Last edited by Capecodder; 09-06-11 at 05:44 PM.
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Old 09-06-11, 11:34 AM
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Great info. Thanks Capecodder.
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Old 09-06-11, 06:54 PM
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If you know what you're doing, with a little ingenuity you can smack 'em out with some improvised tools, including a soft drift to engage the spindle.
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Old 09-07-11, 11:18 AM
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Thanks Capecodder. I've used a ball joint pickle fork before but not always with success and often with marring. This looks like a great tool and method.
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Old 09-07-11, 01:33 PM
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my wedges have been shipped - assuming that the tool works as proficiently as i would imagine it would - it makes me wonder - will i ever use a threaded puller again
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Old 09-07-11, 01:36 PM
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Originally Posted by marley mission View Post
my wedges have been shipped - assuming that the tool works as proficiently as i would imagine it would - it makes me wonder - will i ever use a threaded puller again
Keep us posted! There's sure less danger of cross0threading the puller, stripping the threads, &c.
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Old 09-07-11, 02:20 PM
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I would suggest re-threading the crank in TA or Stronglight size, then use the corresponding extractor. This way you don't have to junk the cranks.
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Old 09-07-11, 02:43 PM
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Originally Posted by MetinUz View Post
I would suggest re-threading the crank in TA or Stronglight size, then use the corresponding extractor. This way you don't have to junk the cranks.
Why would he have to junk the cranks? They can be put back on and removed with the chuck wedges again......
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Old 09-07-11, 04:51 PM
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wedges came - only problem is i only ordered 2 - pushed completely against each other - they dont come close to touching the the crank - never mind forcing them off - i ordered 3jt's - was i supposed to order more than 2 - or a bigger size - not a big deal - but i'm gonna have to order more
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Old 09-07-11, 04:57 PM
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What about a screwdriver or wrench to take up the extra space?

This seems like a good idea, wonder if it actually works.
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Old 09-07-11, 05:04 PM
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Originally Posted by Old Fat Guy View Post
What about a screwdriver or wrench to take up the extra space?

This seems like a good idea, wonder if it actually works.
i totally believe it will work - i just think i need bigger wedges -though i agree - that idea might work - in fact 1 or 2 metal park tire levers would probably work as spacers - though the beauty of the chuck wedges is that they wrap the spindle
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Old 09-07-11, 05:07 PM
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I get that, maybe a big open end wrench would serve as a base?
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Old 09-07-11, 05:10 PM
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Originally Posted by Old Fat Guy View Post
I get that, maybe a big open end wrench would serve as a base?
+1 - an even better idea for a base or spacer
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Old 09-07-11, 05:12 PM
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Slip a coulpe cone wrenches in the gap to take up the extra space.....
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