This was the first encarnation of my design. I welded up a steel caliper adapter, made aluminum spacers on a drill press, drilled extra holes all the way through the hub, and mounted early 90's GSXR 310mm rotors. It was heavy, but it worked great. The Japanese Yamaha R1 calipers are nice, but they do not clear the spokes on wire wheels. I may be adding a Japanese caliper adapter again in the future, but the extra clearance provided by European offset calipers is more ideal for this project.
Right Side Brake
Note the right side single brake. this is easily done when modifying the left side slider. Once the mounting ears are trimmed it will work on either side of the bike. In this case the owner just reversed the axle. This can also be done to make a right side slider for dual brakes. The trickiest part is having the axle hole enlarged for the big end of the axle. It needs to be perfectly straight. A qualified machine shop can do this for not much money.
Make it your own
Gold, Black, Silver, Blue and even Red. There are many theme to choos from when using modern sport bike parts.
Replacing the brake pipe
Want to keep the hose you have? Here's an example of how you can easily replace the hard brake pipe with a short braded hose with an M10 banjo on one end and a male fitting on the other.
If you have a custom side car rig that uses ATE swinging brakes this modification will give you the stopping power you need.
Help is ariving for you GS riders who want real brakes. Stay tuned, it's coming
Dual brakes with an Under Tank MC
Just got this great picture from a client in Norway. Nicely done pair of Ducati 32/32 calipers with a pair of 999 320mm discs. He used the OEM 17mm Undertank Master Cylinder. This set up can be tricky to bleed especially because the Master size will be very sensitive to any air in the system. He stuck with it and now has some very nice brakes.