Not a pro, but I have used a 775 (RS-775-18) in the same competition. Used drink cans (empty, of course, and missing one end...) around the back end of the motors and plenty of tape to seal the dust out. No motor problems, but the speed controller safeties gave us trouble... (not motor-related). This was in the drivetrain; I want to say
I uploaded a photo to CD-Media some time ago of that robot. There was no cooling on the robot--remember that there is no air on the moon, so fans aren't exactly useful (FRC 2009 aside). Judges just might call ya on that.
I'm not sure I'd use a 775-Pro in that application, offhand, but if it seems to work out powerwise that might do the trick.
__________________
Past teams:
2003-2007: FRC0330 BeachBots
2008: FRC1135 Shmoebotics
2012: FRC4046 Schroedinger's Dragons
"Rockets are tricky..."--Elon Musk
