Quote:
Originally Posted by Synchro909
I've installed many new brake drums but I've never trued the hub beforehand. What's the point? The drum is turned once the studs are riveted so they are true. Rarely do I have to take any more than about 0.010 - 0.015 at the deepest point to clean them up.
IMO, this is overkill on steroids.
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Generally speaking, the hub flanges are bent 'proud' where the hub bolts were riveted onto the drum as this is a high pressure point. When you skim the hub flange just enough to flatten this area, you have a greater area of the hub flange concentrated over a larger brake drum flange surface. This should add to rigidity.
Is it overkill? I suppose it boils down to whether you are repairing or restoring. For me personally, I try to restore all assemblies back to factory specifications or tolerances first, and then replicate aesthetics. Not everyone shares that desire, ...and I totally get that.