Quote:
Originally Posted by Alpha 997
Ohh... Did 254 build theirs too? 
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254 and 968 collaborate and work together.
Every part (except the bolts and bearings of course) of the transmissions were custom machined. You can not buy them at all.
Currently the two best (for overall FIRST use), off the shelf (which seems to be what you are looking for), shifting transmissions are the AndyMark two speeds and the Dewalt drill 3 speeds.
The dewalts take more work, but are 3 speed and cheaper.
The AndyMarks are easier to work with, are already done and can take two motors without modifications.
Personally, I would take the andymarks.