Originally Posted by
3speedslow
I know you can re bend a 650 to fit a 26” rim but did not think the method would be able to size down from 700 to 650.
Do tell!
The fenders on my RTP bike, with 26"wheels, are sold as 700c (29er} fenders. No problem.
The thing is, if you make them wider, you reduce the radius.
Your fenders have a rolled edge, right? So measure the space between the two rolled edges, and cut yourself a little stick of wood (like a pencil stub or something like that size) a little longer than that that measurement. So if the fender measures 42 mm, cut the wood to 45 mm.
Use a twisting motion to jam it between the rolled edges at one end of a fender, then slide the the stick along between the rolled edges all the way to the other end of the fender, pressing the rolled edges apart as you go. Make a couple passes, it should get easier the second pass. Your fender will now fit a smaller wheel.
You may have to repeat that process with successively longer pieces of wood before you get to the right size. Whole process should take just a couple minutes. Don't overdo, if you go too far,undoing this isn't so easy.
Edit, lest I go off topic:
ISO old 36h track bike hubs. This is for a bike from the 40's or early 50's. American or English stuff (Bayliss Wiley, BHC, Philips, etc), would be great, but I'd consider French, Italian, German, whatever.