Framebuilders - proper method of brazing rear brake bridge

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.

PDA

View Full Version : proper method of brazing rear brake bridge

scbvideoboy

01-23-09, 08:38 PM

I have a brake bridge I need to braze into the rear stays.
Do I miter the ends and fit it in...
or do I drill holes into the stays to "capture" the bridge then fillet the braze around the tube?

I'm actually working on a FWD tadpole recumbent trike and am using chainstays for the rear wheel and want to put the bridge there for a emerency brake/parking brake (tadpole braking primary through front wheels) and was thinking drilling the stays vs time comsuming miter and fit multiple times.

DH

JohnDThompson

01-23-09, 09:29 PM

I have a brake bridge I need to braze into the rear stays.
Do I miter the ends and fit it in...
or do I drill holes into the stays to "capture" the bridge then fillet the braze around the tube?
You can do it either way, but I've seen drilled stays crack at the hole, and IMHO it's easier just to miter it to fit and braze it in that way.

BTW, while brazing you'll want to space your dropouts about 5mm wider than your target OLD distance, as brazing in the bridge will pull the stays closer together.

scbvideoboy

01-24-09, 08:54 AM

OK, that helps, I've been reading through a lot of posts since my post and miter and fit appears to be the best choice.

Thanks.

DH