Monday morning quarterback: bicycle weld

[Big Paulie]

I had the same issue, but rather than welding the aluminum kickstand to the chrome moly frame (brazing with silicon Bronze is the only method), I think a better solution is to weld a piece of square stock to the top of the kickstand, so that it acts as an anti rotation plate/ledge, against the frame tube. This way the kickstand is still removable in case of a needed repair, and you are dealing with similar metals.

[DaveO]

Hey, BP, I should have mentioned the kickstand is steel too. The mounting surface on the bike is a plate between the forks, drilled to accept the bolt; the kickstand is more likely steel than chromoly with a threaded hole.

I actually had the same thought about attaching a ledge to prevent rotation, and yet another alternative would have been to drill another hole in the upper and lower plates to insert another bolt. The tack weld was quick and much more fun, although I'm wondering about the soundness of the weld. A web search directed me to WT&T, where Jody recommends er70-s2 filler for TIG, so I may not be too far off.

[zedron]

I highly doubt the frame is chromoly if its a cheap bike like you mentioned.

[Big Paulie]

I understand the desire to have a solution that justifies owning the welder.

how about drilling another hole in the mounting plate on the frame, through to the kickstand, then welding a stud to the kicstand that will protrude up thorugh the matching hole in the frame plate. this stud (short bolt) would serve as an anti rotation pin, and the weld would just need to hold it in place, but the stresses will all be on the stud. either way, there should not be any significant stress if it is just preventing rotation.