Quote:
Originally Posted by Ether
Could you articulate this argument in a bit more detail? It's not entirely clear what you are saying.
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By using a drivetrain where roughly half of the robots weight is supported by non driven wheels, the normal force on the driven wheels decreases. This puts the motors under less load at the expense of traction and pushing power. Generally a bad thing, but if pushing isn't called for at all it can be a good idea, since it lets you gear your drivetrain for a higher speed than otherwise possible.