[dtengineering]

There is another thread around here somewhere describing the planetary gearbox from Banebots. It is probably the quickest and simplest way to mount the FP motors. Order on-line and for less than $50 and about an hour to adapt the motor to the gearbox, you'll have a compact, lightweight transmission with your choice of gear reduction, a variety of mounting points and, I believe, a keyed 3/8" shaft.

We're using a couple on our robot.... maybe three if we need to mount the Mabuchi as well.

Either that, or check out the white paper on "Nothing but Dewalts" that shows how to adapt a DeWalt drill to an FP.

Jason