I think this thread is getting out of hand and needs to be reported to the moderators - oh wait, I am a moderator
Eric, I like your crank shaft adapter. Building that shoulder looks like it would add a lot of strength. When I drew up the one that Wayne made, I made sure it was hell for stout. Then when Wayne made it, he beefed it up a bit more.
He made one for both of us and I really like the way it worked. It sure made it easy to mount industrial pulleys (with their bushing system).
Wayne needed a serpentine belt pulley for his application. His used a "K" section belt and there are no industrial pulleys in that section. I gave him the pulley groove drawings and he took an industrial pulley and had the regular grooves machined off and the new groove machined in.
I have talked to another person who took the DD serpentine type pulley and bored it out so that it could be mounted on an industrial pulley that had been machined to the mate with the bore.
Jim