Thanks for all the compliments everyone! This is my second attempt at a Vex bot, the first was designed as a mini for this year's game.
The PWMs are indeed sticking out due to a missing controller. When I was working on the bottom I didn't want them to sit underneath the metal (since it was on its side for bottom work), so they are all twist tied to the top to keep them out of the way.
It has a number of gearings to transfer the power, but overall it has a 2:3 gear ratio in low gear and a 2:15 gear ratio in high gear.
I am worried about it being top heavy since there are 6 motors attached to the top layer, but with a battery and controller on the bottom I think it will balance out okay.
It uses up gears from the standard kit and one expansion gear kit (2 12-tooths, 8 36-tooths, and 6 60-tooths). It uses two chain kits though; I think you could get enough sprockets from one, but it uses so much chain that I only had 2 inches of chain left from both kits combined (this after moving the encoders closer to one side so I had enough chain). It uses 2 metal kits, but if you're willing to cut many of the long pieces and shafts to length it could easily be done with 1.
Speedy is 9" L, 11" W, and 8.5" H, if anyone wants to try
You'd have really big encoders doing that...