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Originally Posted by sburro
welcome again. A little more info as to how the vex bot is setup will help us out greatly. I will star with this.
If you drive each side (3 wheels) together, you will drive like a tank and no not need a differential. If you are going for like a 6 wheel drive off road vehical (I am not positive) then you would need a diferential. Let us know what you are thinking and I will think about how to do this.
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I drive all three wheels on one side together. I plan on driving the robot on rough terrain; which is why I am using the five inch tires. The reason I think I need a differential is the fact that when the robot turns, it is causing the other wheels to jerk or have problems turning.