Bicycle Mechanics - Frozen BB lockring...

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View Full Version : Frozen BB lockring...


genericbikedude
04-06-05, 11:44 AM
...anybody have any special tricks to share? Its an old hi-ish quality suntour BB, with six slots for the bb toothy wrench jawn. I've been using the aforementioned toothy wrench jawn, but I can't get a very good fit, and the thing is quite tight.


powers2b
04-06-05, 12:37 PM
Use liquid wrench and try again.
Also ues a threaded rod with two large washers and two nuts to hold the tool in the slot while you turn it.


Enjoy

rykoala
04-06-05, 12:46 PM
I'll probably get flamed for saying this, but I've gotten off lockrings with nothing more than a screwdriver and a hammer. Just tap it loose, no need to wail on it unless its REALLY stuck. I've serviced a couple of BB's that way with no problems.


powers2b
04-06-05, 02:29 PM
I'll probably get flamed for saying this, but I've gotten off lockrings with nothing more than a screwdriver and a hammer. Just tap it loose, no need to wail on it unless its REALLY stuck. I've serviced a couple of BB's that way with no problems.

Yea, if you don't care about damaging the chrome then a pipe-wrench will work too.

Enjoy

sydney
04-06-05, 03:25 PM
Yea, if you don't care about damaging the chrome then a pipe-wrench will work too.

EnjoyA lockring is not exaclty a big deal.

phantomcow2
04-06-05, 03:46 PM
lockrings can be removed with pipe wrenches. IVe done it without issue, theres lots of creative answers to this :)

Retro Grouch
04-06-05, 03:55 PM
All I can say is that if you're having this much trouble with the lockring, wait until you get around to the other side. You're likely to find out why it's called a "fixed cup". You're likely going to need a long bolt or a piece of theraded rod or something similar to hold your BB tool tightly in place while you wail on it.

Bikewer
04-06-05, 05:26 PM
The old trick to remove the "fixed" cup is to clamp the thing in a vise, and use the frame itself as a wrench.

Liquid Wrench is good stuff; a bit of judicious tapping with a hammer makes it penetrate better.

I too have used drift-punches, chisels, screwdrivers, etc., all whacked with a hammer. If it gets too bunged up, any decent bike shop should have a few lying around in the old parts bin.

phantomcow2
04-06-05, 06:17 PM
yea the clamp in vise and use frame as lever is what i usually do.

ofofhy
04-06-05, 06:39 PM
lockrings can be removed with pipe wrenches. IVe done it without issue, theres lots of creative answers to this :)

By pipe wrench, ydo you mean strap wrench? I have found one of those invaluable in life.

I've removed a seized lock ring, a headset lock nut with damaged threads, and installed a new shower head. Allows you to do the job without the marring effects of metal wrenchs.