I have yet to hear of anyone running a 2-speed brushless on the DM-1. When I was building my Super RS4 (EP) I heard a few people talking about using the 2-speed from the Nitro version. What I gathered was that there was little need since the electric motor has a flat torque curve and would not benefit much from the 2-speed. I do not know personally but will be interesting to hear how yours works out with the 2-speed.

If you have the room I would think a 2-speed on a larger 1/7th scale would be fun. How do these things shift? Do they use some type of centrifugal clutch mechanism that switches out at a certain RPM?