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Unread 22-05-2011, 10:33
James Critchley James Critchley is offline
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Re: 4" vs. 6" + 8" Diameter Wheels

Still not clear.

Quote:
Originally Posted by James Critchley View Post
Then I'm spinning the wheel under no load...
No load means no load. The robot is on jack stands. If radius drops out here, then it's not coming back as the model becomes more complicated.

The bottom line is that an increase in rotational inertia of large wheels alone is not a valid reason to choose smaller wheels. It is an increase in total mass of the robot or (EDIT) increase in rotational inertia attributed to (END EDIT) mass distribution (EDIT) and mass (END EDIT) of the wheels that contributes to any performance degradation. These and all of the other excellent reasons cited in this thread push for smaller wheels.

Last edited by James Critchley : 22-05-2011 at 13:38. Reason: minor correction... not thinking.