The handbrake calipers arrived. They were supposed to be big enough to accept 32 mm brakediscs, well they were 32 mm wide without brakepads, with the pads only a 28 mm disc fits, so I made spacers from a 4 mm steel plate.
Rest of the install was straightforward. There was a 13 mm thick spacer in the caliper that also provided radial mounting holes, but I removed it. The mounting bracket I made is simply a 3 mm thick steel plate, drilled in the right places and trimmed to size. It mounts were the 13 mm spacer was, together with a stack of washers that positions the caliper in the right position, the outer pad close to the disc. I went to the local hardware store and got 3mm steel cable and the guide wheels. The cable will go from left to right like original and through the original guides so the rest of the handbrake system doesn't need to be changed. Works very well, very solid, great clamping force, confidence inspiring. Another problem solved.
I leave the caliper blank aluminium, you have to really look to notice it, maybe if I paint fake holes on it it is even more camouflaged.
