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I recently installed a wide glide front end onto my 12 Street Bob and used the Hawg Halter 408 conversion kit specifically for the rotor spacer. Once installed, I noticed 2 things going on. 1st - I had very little front brake. 2nd - the disk was not spinning in the center of the caliper. Being the rookie that I am, and using the process of elimination, I eventually discovered the issue. It was not the brake, master cylinder, balanced wheel, etc, etc. The rotor spacer was not fully seated/flush onto the hub, and was therefore not allowing the wheel to spin evenly through the caliper. When I pulled the wheel and rotor back off, I could actually rock the spacer back and forth onto the hub. It turned out that the spacer inner diameter is cut at a 90 degree angle, but the hub is not....it's actually a bit round/beveled. So, I had to have the spacer ground/machined in order to fit snug against the hub, and once I did that, it aligns perfectly within the caliper and I've got my brakes back. Just wondering if anyone else has had that issue?
That doesn't sound right at all. The pilot on the hub should be a straight cut, perpindicular to the rotor/pulley flange. There is a small chamfer on the leading edge.
Sounds like you may have damaged the hub... Did the pilot roll over into the bearing bore?
Example (not a MoCo hub, but it was a nice close shot of the pilot.
Agree with cggorman. If the recess on the spacer was not deep enough, the spacer -could- have been sitting on the face of the pilot instead of the face the wheel hub. Hope you didn't take anything off of the ID of the spacer recess, because that is what keeps things centered.
Yes, (outside) corners of the pilot are chamfered so they don't bottom out in the (inside) corners of the recess, and the recess should have square (inside) corners, to clear the pilot.
On your wheel hub (white): The pilot should have a chamfer at point A, between the face and the OD; it should have a sharp corner at the base (point B) rather than a radius.
On your spacer (green): The recess should have a sharp inside corner at point A and a chamfer at point B.
Below is how the spacer recess (A) and pilot (B) could be machined to avoid interference. Also, if the recess is not deep enough (like shown) the spacer will only be resting on the face of the pilot (at A) instead of the faces of the hub and spacer (at B).
[ The sharp inside corners can have a very small radius, as long as it's smaller than the chamfer. ]
Are you referring to "A" or "B" interference? ...or am I all "wet"
Wasn't sure if this was directed at my preceding post.
Originally Posted by multihdrdr
Is your post directed to me?...
EDIT: Or maybe you were referencing my drawing while your post was directed to the OP...I thought at first you were helping me correct my drawing
.
Referencing drawing.
From the OP, sounds like the HH spacer was similar to the drawing in green, and that he was able to fix it. Just something to look for if parts don't seem to go together as expected.
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HH Rotor spacer issue?
