Go to Post Their robot moves so fast that it changes colour due to the Dopler Effect. By rapidly alternating between driving away from the viewer (Redshift) and driving toward the viewer (Blueshift), they can make the viewer see it in their traditional purple colour. - philso [more]
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Unread 10-05-2010, 13:06
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Re: pic: prototype drivetrain v2.1

The solid/plain surface bearings (which are different from bushings) that the suspension pivots on could be made from brass, with a ground steel shoulder bolt being used as a shaft, which would be very strong and durable. Better yet they could both be purchased parts. If the shaft is aluminum I would use a nylon or delrin bearing so that the bearing wears faster than the shaft.
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