I just broke my front Weinmann canti, so I need to replace it, but I want to keep the cost down. My options are:
v-brake adapter and use old XT v brake
find someone with a spare part to fit my broken canti (see the void in the picture!)
anything else for about £25 (uk)
I'm not sure which to go for. The V adapter is the cheapest option, as I already have the brake, but I've never used V's on a CX bike before. The radius loko good for the money, but I don't know anyone who has used them. The geometry looks similair enough that it should be a straight swap for the old Weinmann.
I have the same (well, the Mafac version circa 1970 something!), and re-newed all the bolts through Martin Eadon (Dud) at www.x-gear.co.uk/,
I didn't need the bit that you have missing (it probably has a name) but it may be worth contacting them. I have had mine for about 12 years, bought second hand, and (I think) are the most efficient brake for a cross set-up.
Cross brakes are notorious for squealing. To fix this problem the brake shoes need to toe in. Unfortunately, most cross brakes dont have toe in adjustment. On my brakes that have this problem I just take a file to the pad and give it a bit of an angle of toe in.