In a message dated 2/9/2002 1:12:02 PM Eastern Standard Time, sandranian@yahoo.com writes:
> I have a 1970 low-end frame, but want to use it...and
> unfortunately, one of the Bottom Bracket cups is
> frozen (the non-adjustable one...forget the name
> (lock?).
>
> Anyhow, any advice on how it can be "unstuck" would be
> appreciated. The local bike shop tried with their
> tools, and only managed to mar the frame a bit. They
> said they "soaked" it in tri-flo, but only for a few
> minutes.
>
> What can I do???
>
I'm assuming it's standard BSC threaded fixed cup and everyone is turning the right way? A couple of things: It has to come out? You're changing bottom brackets? If not clean and lube in place.
Tri-flow is not penetrating oil.
Go to a good auto parts store and ask for their best penetrating oil.
I prefer Kroil made by Kano: http://kanolaboratories.com/
My vice doesn't lend itself to clamping the cup in the jaws and turning the whole frame, no doubt that's a good method if you can do it that way. I'm partial to using my park wrench and clamping it to the cup with appropriate nut, bolt and washers. After soaking in penetrating oil over night preferably, I think really hard about which way it's suppose to turn and smack the wrench with a plastic hammer. The shock should break it loose.
Pete Geurds
Douglassville, PA