Mulitple views of the rear brake bracket I made. Looks like a complicated piece. I spent a lot of time laying it out such that it would wrap the frame as much as possible and be somewhat hidden underneath the right rear frame point. The radius angle matches the same angle as the right rear frame tube that comes off the axle block. The offest required to get the caliper centered over the brake rotor is built into the brake bracket.
Slight adjustments that need to made will be accomplished with stainless steel brake calipers shims. Completely common when dealing with one off parts and paint stackups.
I will machine a brake tab out of stainless that will use the front most brake caliper bolt for a sanitary design. I will later weld it to the frame. I am using stainless so that I can grind the powdercoat off it and then be able to slide the caliper fore and aft with the rear wheel for chain adjustment. It just looks like shit when you see rings in the paint or powdercoat from the brake bracket being slid around.
I machined this on a 2-D CNC Bridgeport. I designed it such that I could use common ball mills, end mill and bull nose end mills, but making it function as a 3-D sculpted part when it fits in the bike. Spending 8 hours to design this bracket and 4 hours to machine it are worth it too me. NO ONE ELSE in the entire world has this same bracket to mount a sport bike caliper on their chopper. That's good enough for me.
