Thread: Throwing Problems/Motors
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Unread 12-02-2014, 00:34
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Re: Throwing Problems/Motors
A 24 m/s shot at 45 degrees would travel over 96 feet (neglecting air resistance), or almost twice the length of the field. You don't need anywhere near that speed.

To do a quick check for how reasonable your ratio is:
The free speed of the CIM motors is 5310 RPM. The toughbox mini at 8.45:1 reduces this to 628.4 rpm. This is equivalent to 10.4 revolutions per second. This means that your catapult, if it moves 120 degrees, would try to flip in 0.032 seconds, which is probably too fast. The system will not come close to this speed due to insufficient torque. This leads to inefficient operation, and in this case, no operation at all. The speed exiting your catapult (that you are geared for) would be about 10.4/s * 2 * pi * 2 ft * .3048 m/ft = 39.8 m/s.