The first McNerney brake drum machined to fit a custom Buffalo front hub that Kevin made for me.
The originals were likely steel, but cast iron works so much nicer as a brake drum
Here is the "famous" shaft that Paul is referring to. Now with 5 years of operation on this design! This is the "engineering prototype" using a original Ford shaft. The production run was all new.
Seeing how much the hogshead deflects on the flexible pan while driving that shaft makes so much sense to me right now.
That was my thought. Consider that on all subsequent designs there is some allowance for deflection
Also I considered all the loose center main bearings and broken crankshafts I have observed in 40 years in the hobby
This seemed like it might have some value
I'm certainly not saying that it will prevent crank failures
However consider that most crank failures occur in the back half of the engine
Might have to make a shaft like that of my own. Was the outer flange a few thousandths of an inch thicker than the smaller flange the shaft was attached to?