Also, if you're lucky, a good 16 mm cone wrench will work; e.g.
one with _really_ flat jaws.
Fred Rednor - Arlington, Virginia (USA)
> Park used to make a light duty tool for these. Because they
> were
> handy for adjusting the adjustable cup, without removing the
> crank
> arm., I've been watching on Ebay for months and haven't seen
> one come up.
>
> If it isn't stuck too badly, Sheldon Brown's Big Bolt method
> will work.
> Go to http://sheldonbrown.com/
> down.
>
> But friction has it's limits. Because the Raleigh type cup
> has so
> little surface area on the outside, if you start to apply too
> much
> force you can damage the brittle flats and still not get the
> cup
> off. http://www.bikesmithdesign.com/
>
> When this happened to me I tracked down a Kingsbridge tool.
> This
> also works by friction but has a finer thread pitch, so
> pressure is greater.
>
> When even this wouldn't do the job, I made my own tool that
> bolts
> snugly to the cup and can't come off the flats. It worked so
> well I
> had more made and they have been selling rather
> well. http://www.bikesmithdesign.com/
> I've sold
> 40+ in a few months and many customers say they'd tried every
> other
> method first.
>
> So far I know of only one cup the tool couldn't remove. They
> stuck
> the tool in a vice and two stout lads tried to unscrew the
> frame from
> the cup. That one was so thoroughly stuck, the frame bent
> from the
> force applied. Even then neither the tool nor the flats on
> the cup
> were damaged.
>
>
> At 7/27/2007 09:15 PM +0100, Julius Naim wrote:
> >Hi
> >
> >Can anyone help. I have a bottom bracket cup I need to
> remove that's
> >stuck and I can't get it to unscrew. It's the type often
> found on
> >Raleigh bikes with what I think is called a wrench flat (a
> strip
> >across the middle), it's too flat to get enough grip with an
> >adjustable wrench and I don't have a workbench that I could
> use a
> >vise to try and get more grip with.
> >
> >Can anyone tell me what park tool would fit. if they do one
> that is?
> >Or is there an easier way to tackle it?
> >
> >Thanks for any help.
> >
> >Julius Naim
> >London UK
>
> Mark Stonich;
> BikeSmith Design & Fabrication
> 5349 Elliot Ave S. - Minneapolis. MN 55417
> Ph. (612) 824-2372 http://bikesmithdesign.com
> http://mnhpva.org
>
>
> _______________________________________________
>
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