97af wrote:4Z wrote:I don't know what what caused it, have a hypothesis.
What do you think?
No flaming arrow yet, just a list of guesses.
-Counter shaft clearance at the bearings was a little on the tight side. Not too tight as I assembled it without the crank and checked operation, then again with the final assembly, all was well. The only thing I can think of off the top of my head is to use plastiguage (sp) on the end washers to check for clearance.
-Frame relaxed and bound on the motor. It didn't just slide in. I had to coax it in with through drilling the mount holes and removing material on the inside of the two forward mounts. Just enough to get the motor in there. I need to massage the frame more so that it is a slip fit, that is the only thing I can do that I should have done the first time it went in.
-Worn trans components? (bearings and cases were all new) I only gave visual inspection, didn't get the mic out.
-Poor casting out of the box.
-Too much POWAA!
I am going to have the motor split today, internal investigations may reveal more.