Quote:
Originally Posted by wilsonmw04
Because of various design issues and the "80 inch rule," we are thinking about turning our frame side ways and putting the drive wheels on the short axis. We are looking at a frame 36" wide by 26" long. With a far shorter wheelbase, are there going to be problems with turning something this wide. is there a disadvantage to powering all four wheels?
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Driving 36" wide will make turning a lot easier. In addition, it will make the robot less tippy while turning. You will need to take care because you will be tippy while accellerating. If you have problems while accellerating, I'd suggest a wheelie bar or moving some heavy objects within the robot forward in the chassis.
We are driving wide this year as well, and we've had excellent success the last 2 years in this configuration.
Powering all 4 wheels is generally recommended as well as running chains between them, although this will add a lot of weight to your drivetrain. This gives you good pushing power and accelleration. If you use grippy tires you should be able to corner well in this configuration.