I am not sure I am understanding why you guys are interested in motorizing the T-Rex. The whole point of having it to begin with is to enjoy the simplicity, as you say Lane, it just pops out and back into the bag almost fully assembled. If you add motors, you'll have to carry a battery. Why not just get a regular eq mount then?
The T-Rex is a fantastic mount. It is VERY fun to use. I sold mine a while back, but am contemplating another because I miss playing with it. It handled my Edge HD 11 with ease. The manual workings of it make you one with the mount. Adding motors would destroy that feeling, and complicate things. The Sky Commander is fun and more than adequate for an altaz mount.
Good luck, Chris
I understand where you are coming from but different folks have different requirements. Adding a battery to the gear is nothing compared to what I have to do when taking a complete Atlas to the field...the T-Rex will be in business just as quick with the motors as without. I often do a lot of high power observing during a session and that is why I want slow motion control, but I have increasing arthritis issues with my hands. Turning knobs can become painful after a while, not so pushing a button and that's why I want the motors. I will still be able to set up with minimal effort, slew quickly, find my targets with Sky Commander, AND observe at high power for long periods if I want to; so there is a method to the madness. I'm not afraid to mod a piece of gear if it will make it more convenient and efficient for me; the T-Rex will be no exception. And as you said, it handled your C11 Edge with no problem and that is one of the OTAs I have as well, also a C925 and a TEC 140 - and the T-Rex should be just the visual observing ticket for all of them