The original John Stears' R2 Robot Manual, the fall special edition of Electronics Today, and the December issue of Electronics Today have some of the best shots of the construction of the R2 traction drive system.
We've been able to identified the original motors used on R2-D2 as Lucas 17W windscreen motors.
Here is a link to an article we put together that shows a bit of history about tracking down the motor and a video disassembling the motor.
Forensic Archaeology - Lucas 17W
We've been able to identified the original motors used on R2-D2 as Lucas 17W windscreen motors.
Here is a link to an article we put together that shows a bit of history about tracking down the motor and a video disassembling the motor.
Forensic Archaeology - Lucas 17W