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Unread 28-11-2016, 09:44
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FRC #0228 (GUS Robotics); FRC #2170 (Titanium Tomahawks)
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Re: pic: 3 wheel omni drive concept

Other than the clearly ridiculous nature of this robot, the main thing I see being a real hiccup with it is the shape of the center omniwheel. Since it isn't really round in profile, I don't think the robot will tip forward or backward on the wheel smoothly. It'll take weight off of the left and right wheels when the robot tips at certain angles and put more weight on them when tipped at other angles, and it may prevent the robot from righting fully at certain points. I'm not sure I'm describing this well, might need to draw something.

I think this could be fixed either with an active suspension, or in a far more boring way by making that third wheel outboard of the other two, forming a sort of kiwi drive. But the latter would destroy the whole concept of the robot, so where's the fun in that.

Quote:
Originally Posted by Ari423 View Post
Judging by the appearances and the finger joints, it looks like a majority of the frame is made out of wood. I would be a little sceptical of bumpers hitting wood repeatedly in high-speed collisions.
This is far from the first wooden robot frame in FRC - teams have been doing laser cut wood frames for years. They can be done very robustly.
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