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Quad-Drive Rotacaster Omni-Bot

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As I have a set of four Rotacaster Omni-wheels to test drive, I decided to build a 4-wheel Omni-Bot for a change from the normal 3-wheeled versions. Build a solid & compact 4 wheel platform wasn’t as easy as I first envisaged. But after 3 attempts I hit upon something that worked. The Lego purists may no approve of the way I had load a few joints to get it too work.

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