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Pedal wrench

Old 07-16-07, 02:08 PM
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bfromcolo
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Pedal wrench

I am trying to get the pedals off a one piece crank from an old Schwinn and I have successfully bent up all my flat wrenches in the process. The space is too small for a regular open end wrench. So time to buy a real pedal wrench instead of this stamped crap. Would something like the park tool that has 9/16 and 15mm ends do the job or do I need some weird size for this old stuff?

Thanks
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Old 07-16-07, 02:13 PM
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neil0502
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Do you have a Local Bike Shop near you? Do you want/need the tool for the future?

You could take the bike to the LBS. They can either help you figure out the right size (Park is a two-sized wrench), and/or (likely) remove it for you for a small fee.

Do you have a caliper to measure it for yourself?

Have you sprayed a penetrating spray and let it sit for a while?

You can search for "stuck pedal" or "frozen pedal" and find lots more ideas.

Good luck!
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Old 07-16-07, 02:18 PM
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are you turning it the correct direction? just checking...
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Old 07-16-07, 02:24 PM
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Yes assuming the left side is reverse threaded. I just wanted to verify the size, I measure it with a caliper and it seemed slightly larger than 15 mm, possible a 15mm that has been roughed in the process of trashing my cheap wrenches. And I hosed it down with liquid wrench.

Anyone cut one of these off? With a grinder maybe? I am actually looking to convert to a BB and three piece crank, but step one is removal.
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Old 07-16-07, 02:42 PM
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I bought a 15 mm open ended wrench and ground the thickness of the wrench down so its faces would fit on the flats of the pedal axles. As concerns a 9/16 inch wrench on one end and a 15 mm wrench on the other, 9/16 inch is almost 14.29 mm. A 15 mm wrench should work pretty well. Insert a thin piece of metal as a shim to take up the 0.71 mm slack if need be, like a couple of thicknesses of a soft drink can.

Use a caliper or something similar to get the exact size wrench needed. If it is not close to 15 mm, buy a wrench that is the correct size and grind it thinner.
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Old 07-17-07, 12:23 PM
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You don't have to take the pedals off to remove the cranks.

Edit: Doesn't apply to one-piece cranks such as the OP's. Never mind.
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Old 07-17-07, 06:54 PM
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You do on a one piece crank, unless you've figured out a way to get that pedal through the bb shell.

To actually answer the OPs question, yes, 15 mm and 9/16 will do it for you.
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Old 07-18-07, 09:01 AM
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Uhh.. what? Are you confusing "pedal" with "crank arm"? If not, please illustrate.
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Old 07-18-07, 09:23 AM
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Never seen a 1pc crank, DMF?

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Old 07-18-07, 10:27 AM
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Quality tools are a must when wrenching. I would try heating it up a bit carefully with a small torch , then if that don't work hacksaw it off.
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Old 07-18-07, 11:28 AM
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Originally Posted by ettsn View Post
Never seen a 1pc crank, DMF?
No, never have. I'm surprised that thing gets through the hanger tube its own self, never mind with a pedal.



The OP said he is riding one. I must be blind: didn't see that.
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Old 07-18-07, 12:04 PM
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Haven't you ever seen an xmart bike? The cheapest ones are one piece.
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Old 07-18-07, 12:44 PM
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Seen plenty. Never been sufficiently lacking in work to be forced to disassemble one. :0
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Old 07-18-07, 05:31 PM
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Yeah, they're a lot of fun. Big ol' BB shell to fit that thing through.
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