Kenneth, I haven't had a chance to pick up a book on the subject yet, could you recommend one?
While I'm looking for that, can I approximate this kind of fatigue failure by treating it as a cantilevered beam with a cyclic/alternating load on the end?
It seems too simple to be correct, but I...
Kenneth,
Thanks for the pointer. I've got a list of books to get and I might as well add one that covers rotational balancing. I probably shouldn't have sold my old dynamics textbook either...
Bill,
Thanks for the suggestion. I hadn't thought of looking at fishing reel brakes.
The spools...
I'm designing a wire spool feeder (de-reeler?) for one of our processes.
We take wire off the spool, run it through a straightener and wrap it onto a drum. The drum is powered and pulls the wire, the spool is free spinning.
Currently we mount the spool onto a rickety stand with a...