Smallest SS Gearbox - COTS or Custom?

[jkelleyrtp]

I'm trying to fit some gearboxes into our frame and space is very precious at the moment. I was wondering what the most compact way to add a gearbox onto the robot would be. We have some CNC capabilities so making custom gearboxes wouldn't be too bad, but it would be our first time doing so. We're also worried about an 11-72 tooth reduction not holding from the impact loads in this game, so unless there's a great testimonial, I'd rather do dual stage. (Leaning towards single stage but want to make sure it's robust.)