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12.10.2010, 09:47 PM
Since we are talking a 3D cylinder rather than a line, I would say you are increasing the rotor mass by (pi*13^2)-(pi*10^2), or +69%. It shouldn't be linear but more exponential.
The torque should also increase as the force vector would move outward. IE, I would take a guess that the power would be more than 30% if everything else was equal.
In real terms, how many more teeth? Hell if I know :D
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