My machinist said he took off .050 on the lathe, .009 on the surface grinder, then flipped it and took .002 of curve off the back to true the faces. So the plate lost .061”

Add that to my existing .045 clearance for the front clutches to freewheel and I will have .106” which is right where I want to be inside a specified clearance of between .082” and .151” for four friction plates. Hopefully right where I want to be anyway. I figured I’d shoot for a 30% over minimum clearance to be safe but not sloppy.

The plate was .280” so it will still be .219” and plenty strong for its purpose. Again, hopefully- I have no idea what I’m doing but I’m catching up fast.