Quote:
Originally Posted by ablahblah
The difference I'm thinking it has over kiwi or most omnidrives is that now the bot is fairly difficult to push as the wheels spin outward instead of the rollers rolling outward.
|
You still lose a large portion of your available traction compared to a system in which all wheels work in the same direction (usually either a skid-steer or swerve). Any time you have something supporting the weight of your robot that does not contribute to the forward motion, or does not contribute 100%, you end up with less maximum traction (which is what often decides pushing matches, and is a major reason why many teams avoid omnidrives).
Its not even much better in that respect than a "conventional" omnidrive (with 4 omniwheels oriented 90 degrees to each other):
Depending on which direction you are being pushed in, a 4 wheel omnidrive has between 50% and 71% of the maximum available traction. The "Walmart" drive would give between 58% and 67%.
It does look cool, though.