[EricH]

Originally Posted by zander_108

lets say these numbers represent the wheels, the top being the front


1______2
________
________
________
________
3______4



to go forward or backwards rotate 1 and 3 opposite of 2 and 4.

to go side to side, have 1 and 2 rotate in opposite direction to 3 and 4

to rotate in place, all same direction.

It's actually (using above diagram):
Forwards/backwards: all wheels same direction (as with tank steering)
Rotate in place: 1 and 3 one way, 2 and 4 the other.
Side to side: 1 and 4 one way, 2 and 3 the other.
We've done experiments with these, and this is how we did it.