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straighten a frame
http://www.retrobike.co.uk/forum/viewtopic.php?f=13&t=62673

Author:  plain lazy [ Sat Jun 06, 2009 10:55 pm ]
Post subject:  straighten a frame

Is it possible to straighten a frame. I have been offered a frame but the frame is our of line so the rear wheel is at a slight angle. As yo look dons at the frame from above the rear triangle is on a slight skew. Could the frame be put on its side and carefully bent back into line?

this would be a nice bike if i can get it sorted, if not its scrap

cheers

Author:  DY85262 [ Sun Jun 07, 2009 11:47 pm ]
Post subject:  Frame straightening

Hi
anything is posible :D

I had a frame that had a twist. You realy need to think about the process you use, what pressure will be applied to the tubes where the force is to be applied. You don't want any deformation.

I cut some steel gas pipe in laf length ways and used these as lets say mechanical guards, they slipped over the existing tubes. I inserted a hub into the rear drop outs with very large washers. This was just loosely fitted but enough to keep chainstays the correct spacing.

Now the steel bar I used was about 10mm x 60mm. I needed to use it with the force going through the 60mm as the 10mm would just bend. (There are tools you can buy to straighten frames, go to the park tools web site.)

All in all its a daunting process with creaking cro-moly, I needed to go a little beyond my desired as the steel has memory.

But it was a success.

Good luck If you want any more guidence just PM. I did have some pictures of teh process. I will hunt them out.

Cheers :D :D :D

Author:  BENDYCAT ELEVENTEEN [ Tue Jun 09, 2009 10:34 am ]
Post subject: 

what is the asking price of the frame ? what is the frame - is it worth saving or can you buy another frame if it's just a rider !

can you get any pic's ?

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