I currently build without a jig, using small fixtures at each step, along with a flat table to align things.
But I have a challenge I’ve never tried before: a through axle rear end.
Anyone here tried it using only a surface plate / table? How’d you do the parts holding?
I am not super concerned with accuracy on this first attempt, though of course it has to be good enough.
I have a table that came from a big mill that must have gotten scrapped. I use it with an Alex mead flat plate fixture set to set up a bb/cs/dropout assembly. I basically reference one edge of the bb support and pack everything with a bunch of square junk from my toolbox and clamp it together. I use sliding parallels to fill the final gaps. Works better than it looks.
This is what I’m talkin about.
Is that a store bought dummy axle or something you made?
It’s a paragon axle for syntace dropouts and a paragon tube block clamped onto it. The tube block is conveniently sold exactly half the length of the inner relief on the axle and can be used to reference the centerline of the dummy axle.
Is there a reason I can’t use a 12mmx1.75 pitch threaded rod as a dummy axle?
As long as the threads on the dropouts aren’t undersized and meant to he tapped after welding/brazing, I can’t see a problem with that. I am imagining you have a lathe to make the bits for the other side of the dropout.
