Need all 3rd rail PRR Q2 owners..got questions ..

The belt drive system is definitely superior to the gear tower drive that is in the Q2.  Note that the gear tower drive is also present in the 3rd Rail PRR J1/J1a 2-10-4's (and of course also in their C&O T-1 2-10-4).  I've installed Cruise Commanders in my Q2 and J1.  They now will creep at just above 1 scale mph and run smoothly at all speeds.  I also thought about retrofitting a belt drive but to do that right would have involved machining the frame among other things.  I figured I try a Cruise Commander (since it was easier) and it worked great.

Like Bob said, there's no reason the 3rd Rail gear tower drive can't crawl almost as well as any of their belt drives unless there are some mechanical issues. Try the ERRCo cruise if you are considering a controls upgrade, it's way easier to install than the old EOB system and it works every bit as well.

I think you commented a while back on my Q2 video, that's Electric RR cruise in there doing its work.