[kitare102]

We've so far been pretty successful using 775pros on a 4:1 versaplanetary gearbox with 4" wheels at ~4500RPM (max rpm for this setup). Once the stages come in we'll be upping that to 3:1, for a shooting speed of around 6000RPM.

If I had to give any advice, it would mostly be that versaplanetary gearboxes with low reductions are wonderful, not only for powering your wheel, but mounting it to your frame. A helpful note, using a CIM adapter on a versaplanetary and gearing it 1:1 (no reduction stages) is a wonderful way to easily and sturdily drive a flywheel with a CIM or Mini-CIM. This setup on a Mini-CIM nets around the same top RPM (~4500) as with our setup mentioned above. See Ri3D Greenhorns for an example of this use case.

I'd suggest using the 775pros (or 775s from Banebots), as opposed to BAG motors, CIMs, or Mini-CIMs, for the higher top RPM and power-to-weight ratio, seeing as a shooting mechanism is very unlikely to torque-stall and burn out the motor during regular operation. However, I'm sure there are ways to make any of those power a successful shooter.