Ive just been looking at your pictures of your uprights and im just wondering how you fasten the stub axle into the upright. It looks like you will weld them in but doesnt that distort the angle of the stub axle. Also if you do weld them in do you weld both sides of the upright?

How do you bend the upright into shape accurately? I seem to remember you saying tht you got them laser cut but ill prosuming that you use some kind of jig to fabricate it.

[Edited on 25/3/03 by carnut]

Those ones, I think, (some are bolt-in, and some have the bearings inside the upright with a bolt-in stub axle) are welded back and front of the upright. There isn't really enough heat to upset them, though I do tack-weld everything first.
The uprights can be laser cut and folded, or they can be cut from RHS and welded.
I keep a lump of 3/4" plate for making the uprights on. I tack a couple of bits of angle onto the plate, in the shape of the upright, then clamp the bits of RHS to the angle and weld them up.

thanks for your help but i have another question,
when you put the bearings in the upright how do you put fix the bearings in place on the upright?

Carnut

There are two ways of doing it: The bearing housing can have a lip at one end to prevent the bearings exiting, with an internal circlip at the opposite end, or just use a circlip at both ends.
Bearings in uprights are mainly used where there are no front brakes, therefore, the actual stub is shorter (minus the calliper width), thereby reducing the leverage on the bearings.
I have done some uprights with bearings in them, and run brakes, though the diameter of the stub must be increased. In that scenario, the stub axle is usually tubular to reduce weight.