Sorry this is so long after your initial post, it's been awhile since I've been to the site!
The R is not related to rotation, the transmissions take care of that. I've been told by a reliable source that spent many years within Cummins (the 'g' is invisible..) the the R stands for ReCon, a...
8+ year Pro/E user. The current release is supposed to be windows based, tossing out the years of experience current users have built up but good news for new users. Strong surface capabilities, modifications to parts are easy depending if you're the creator or not. On the other hand, if I...