custom big-brakes idea

[dannyho]

Alright, so my Idea is as follows. I have a 71 b-body mopar with drum brakes. The only kits wilwood makes for my car are 12 inch at the largest and no easy combination of their adapter plates and rotors allow for anythign larger. This is due to the design of the hub they make special for this car.
So I bought a single hub, with bearings to try something out
I have 13 inch mustang cobra rotors and they ALMOST fit perfectly, but that certianly not good enough.

I have two pictures to show you, the first is of the way the hub fits together with the rotor as it is, along with a cutaway drawing so you can see the interface close up.

The second picture is one possible solution for creating an adapter ring. Since the center diameter of the rotor hat and the wilwood spindle are soo close I'm not sure that its possible to machine a ring that small. maybe maching the hub down so that I have a flat mounting surface and make a ring (in Blue) to go to that.

Another possible way to do this would be to have the bore of the rotor hat bored out some distance and machine an adapter ring with the radius of the hub built in, but this seems to be a mor complicated machining process. If all this is for is to align the hub and does not take any stress, maybe there's a simpler/ more elegant solution, what do you guys think?

[chicane67]

What you should do is....

... Build your own hubs, get the bugs worked out and then sell them. You'll make eleventy billion dollars.

I think it would make the most sense to make an adapter ring for the hub and brake package... and not to modify more than you have to. That way, you can keep standard replacement parts... well, standard. Its either that, or have hat's made for the peticular rotor/caliper combination. Honestly, hat's are cheap. Maybe call Wilwood... and see if they want a bigger piece of the Mopar market ??