[MrForbes]

We used an AM Stackerbox for that function, with a CIM, and chain reduction drive from it.

We used an FP motor for our intake roller, with a custom made "housing" (two plates of 1/8" aluminum and a plywood spacer between them) with only the first stage of gear reduction from the FP gearbox, again using chain reduction to drive the roller.

Moving all 15 balls out of our spiral hopper in 3 seconds takes some fast turning!