25 Oct 2005 cschur   » (Master)

Hi All,

While were waiting for some of the parts to come in for the new GeoBot project, I was trying out a prototype 4 wheel skid drive system in the house last night. The concept sounds simple enough - two close wheels per side, and drive them like a tank. When going straight, the traction is awsome, and it will climb over anything. But try to turn on a carpet and your in for a surprise! It shakes, shimmys and is very jerky and uncontrolled. Fine for a smooth tile floor or maybe outside in the sand. But on a grippy carpeted surface or maybe in your lawn it makes a mess when it turns. Just like tank treads but worse, in that the wheels are trying to drag sideways while turning. I need to try some more outside tests before condemning it.

Chris

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