"Blueskies" wrote in message
news
Here you go:

http://ibis.experimentals.de/downloa...lvibration.pdf

Yep, that was the primer to the whole treatise.

Anyone who likes mechanical things, at all, NEEDS to read this. If you are
considering something that has a PSRU, or especially a long driveshaft, then
you really need to read it.

Download it, and read it a little at a time, if you don't have a little
while to digest it. To me, it is fascinating reading.
--
Jim in NC