Here's the next version of the drivetrain. It maintains the same general design as the last iteration, but the CAD model has been completely redone. It is now better organized and entirely equation driven- the length, width, height and other properties can all be adjusted by changing numbers in a text file.
This model is not intended to be cut out as-is. It's intended as a base that a team can quickly and easily adapt to any game, changing the size, wheels, gearbox or anything else. As such, the gearbox mounting, which is intended as an example, is not equation-driven and the model includes no lightening or access holes, wheels or axles.
The electronics layout is also not a final design - it is simply a demonstration of how SolidWorks' blocks can be used to quickly draw an electronics board.
The gearbox included in the model is a repackaged Vex Pro Ball Shifter. Its only custom parts are the 4 wooden enclosure pieces.
SolidWorks files are available on GrabCAD
here. Look in the folder "2015 Offseason Drivetrain v2 Upload".
The biggest fallacy in FIRST is the belief we are just a bunch of different teams. We are ONE BIG TEAM with a lot of sub teams for the purpose of competition. - Al Skierkiewicz [more] 
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