Quote:
Originally Posted by EricH
See if you can locate any tech specs for the only "linkage drive" ever used in FRC--"Twitch" was the robot name.
4 omni wheels mounted in swerve module-type devices, rotated 90 degrees by a single pneumatic cylinder. It was used in 2008 for making turns at the ends of the field.
That might be worth trying out in the offseason; the "swerve modules" could be just large pieces of C-channel or box tubing (or, if you have any around, the 2010 KitBot risers with some extra well-placed holes).
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Twitch drives are pretty cool if you can pull it off. You don't need to use omni wheels though; regular traction wheels will do fine.
About the OP:
Cool idea. How would you make sure all 8 wheels are touching the ground though? This would save a lot of space depending on motor configurations. Using a shifter to shift between wheels on each corner bevel gears would net you the ability to tank, slide, and drift. Weight would be a big issue though with the extra 4 wheels and shifters.