Ok guys and girls, heres how to make a captive rear caliper.
5.5mm Tap Set including drill
Pedestal Drill (AKA Pillar Drill)
5mm Centre Drill
Remove the rear wheel.
Mark and drill the chain adjuster block as shown. 6mm holes all the way through and a counter sink hole deep enough so the head of a 5.5mm cap head screw is approx 1mm below the surface of the block.
The heads must be just below the surface to allow the axle to be tightened without hitting the heads and putting pressure on the bolts.
Now put the axle through the swing arm, brake caliper bracket and freshly drilled block so the thread of the axle is towards the new drilled block allowing access to the holes.
Clamp the assembly together or get someone to hold things firm whilst using the 6mm centre drill you mark the brake caliper bracket in the two places to be drilled and tapped.
Remove the brake caliper bracket and drill & tap to 5.5mm.
Now bolt the whole assembly up again so it looks like this
Don't tighten the bolts too much, the calper still needs to be able to slide on the swing arm for chain adjustment. Good idea to use some loctite on the bolts.
Sorry I don't have more time to do a full write up so if anyone has any problems or wants more details drop me a line on Facebook please
And if you want captive spacers drop us a line on FB to get discount.