Today I received a new AA crank from my vendor. This to rectify the situation from the used crank I had gotten wouldn’t accept the rods between the journals. It has been a painful waste of time for both of us. I give him credit for standing behind his parts and work. I know he ate some profit due to the lack of integrity exhibited by the person he originally sourced the crank from.
His analysis of the problem crank is that it was welded and whomever did the machine work did not leave proper clearance between the journals. Evidence he pointed to includes the rough edge I’ve circled in the photo associated with this post. He suspects that if it was in fact out of a running engine, those rods were probably sanded down to fit between the journals.
Now we try again with a new crank! With all spinning components balanced, hopefully it will be smooth sailing from here on out…
