You put the bearings in the hub that is machined in the wheel. Slide it on the spindle and put the washer and nut on it. Pop on the dust cover. These are new wheels and are set up for disc brake rotors, the early ones weren't.
Rotor mounts to holes drilled and tapped on the flat surface just adjacent to where the seals go in. I would think rotors might be 3/8” thick, no vented ones used for that application.
Yes, the rotor bolts to the backside of the wheel, looks great, but u have to remove the the disc brake setup from the bracket to remove the wheel ,if u have a flat.
Two ways to do it. Using original Halibrands, holes are drilled and tapped as noted by Fordors and pictured by Allmotor and disc hat (or disc itself) is attached to the wheel. Lack of clearance usually dictates a small, thin rotor and matching small caliper, as does the fact that the hat attachment bolt circle is small and is restricted to small fasteners due to the lack of material available in that area of the wheel. Also a little shakey as any braking torque is applied to those small and closely spaced fasteners. Or as mentioned by Gary get the Real Rodders Wheels Halibrand clone which looks cool but is a bitch if you need to pull a front wheel. That package uses a regular bolt circle (the same as their regular bolt on version with exposed lugs) but the stud holes are drilled and tapped from the back side of the wheel and the fasteners are accessed from the back side of the hat/rotor. Roo
Something I've noticed is that many of the actual racecars with spindle mounts don't even put the dust covers on.
I am running orig hailbrands with vented rotors and 4 piston Wilwood cailpers. Not a user friendly setup, but i can get the wheel off by rotating the cailper back and unbolting the rotor.
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