So the MC4 brake caliper just arrived, looks like it will work, I just have to figure out how to mount it. I think i have two options, but would welcome advice.
Whatever mounting design I use, I have to finish with two holes I can put bolts through 14.5mm inboard of the rotor. The ring or whatever its called on the axle starts at 12.9mm so the front face of whatever I mount finishes inboard of that.
The main caliper is welded to the ring, so I could follow the same approach and cut/grind a plate to weld there and then bolt the MC4 to it.
Ideally, I'd like to bolt the plate on using two of the bolts in the last picture, but I would have to put a jog in the plate and I am not sure I can do that with any accuracy.. i do have a 20t press though, don't have any brakes or anything built though.
EDIT: maybe a flat plate with washers or spacers? or would that be too sketch?
Thoughts?
@mano002 you were interested in this bit..
EDIT: here are the part numbers - note that the difference between some of the MC4 styles is the spacing of the mounting bolts, this version is the widest (I think):
120-12070bk left side
120-12069bk right
I also ordered the Wilwood cable kit, lokar kits also work apparently. All ordered from Amazon