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Re: Woodie Flowers as a Grad Student [Video]
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Originally Posted by AdamHeard
What kind of tamiya gearboxes were they shane? I've seen various models for antweight battlebots but they all look the same.
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These are the Tamiya plastic planetary sets (72001). (Not the nice new metal ones.) The funny story is that for the longest time nobody knew what motor these actually came with. (Tamiya's website had conflicting specifications and none of the torque curves we had made any sense.) We finally figured out that they are baby Mabuchi RC-260 motors. Last year they would get incredibly hot. Turns out the inductance was so low and PWM period so large that they were seeing 8+A spikes near stall (pulsed off a 14.4V drill battery to a motor rated to 6V). That's since been fixed...
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MIT Mechanical Engineering
>> College Mentor, Team 97: Cambridge Rindge and Latin School with The Edgerton Center, MIT Mechanical Engineering, Bluefin Robotics, and Draper Laboratory
>> Alumnus, Team 527: Plainedge HS
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Every game design should be a means to an end. - Mark McLeod [more] 
10-05-2007, 01:08
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