I've been spending a lot of quality time with my grinder and my Dremel today, getting the rear brake adapter plates closer to ready for use. I've got the steel and aluminum parts, shown to the left, closer to their final shapes, ready for tweaking until it all will mount up.
Here's what it will all eventually bolt up to, the rear knuckle. Those four bolt holes around the bearing housing are key.
The main plate will go on in this orientation.
This subplate will mount behind the main plate. I need to make a little more clearance so it will fit closer to the knuckle.
The aluminum spacer will be sandwiched between the two steel plates to get the caliper centered on the disc.
The e-brake caliper will bolt up on this end. Some of the aluminum parts are spacers for the caliper - the discs are so wide that we have to expand the caliper some to make it all work.
And the Brembo caliper will bolt up to the subplate about here for the service brake.
Once I get everything clearanced so it will fit together, I'll have a bunch of holes to drill and bolts to install. But it's all coming together quite nicely, and I am excited to see it continue to progress.