[EricH]

Originally Posted by T3_1565

Nice looking design, are those motors used for an arm type device, those look like pulleys to me, belt drive maybe???

Looks like the 973 version of the Beach'Bots favorite arm drive. Maybe they did it this way to make powering the arm easier? (On the stock FP output, you need some sort of adapter--usually an octagon--to drive a sprocket via a shaft.) As such, I would say chain drive, two stage reduction to the top.