wanted: machinist or shop in CLEVELAND for one-off

Can't help you on a shop but you got me curious. I've never made bicycle frames so what's that thing for?

Jim

Looks like a gadget that you use with a flat table to set the frame up so it's jigged correctly. Cycle frames are made on jigs - some are tables, some are space-frames, some probably are cobbled together out of 2x4's.

For that matter, I think there's a recumbent somewhere on the net with a

I might be able to help. Call me 216-791-3265

after brazing the frame's main triangle, (the front "diamond," or whatever shape it actually happens to be), that post is used to hold the bottom bracket shell (the hole where the cranks go) in place. this way, the bike is suspended above the plate, but parallel to it, and then by any means you wish you can check the height of the tubes from the table. if there are high spots or low spots, you know the bike is a little out of plane, and then the delicate process known as "frame alignment" (aka, big steel bar) begins. i happen to use a surface gauge to measure the height.

after the rear triangle gets brazed up, you then place the frame back on the post and then check for alignment again. repeat, if necessary.

But, you'll have to call me after noon...I have to watch "Family Feud".

Thanks for posting the explanation. I was racking my brain trying to figure this out.

Wes