Recently I became aware that modifying the casing to a motor is legal in vex U as long as it provides no improvement upon the motor.
This thread here is where it was ruled as legal:
https://vexforum.com/t/answered-mechanical-modification-of-motors/24791/1
and some further clarification was provided here:
https://vexforum.com/t/answered-vex-u-clarification-on-motor-modifications/24814/1
However, I have a few questions I would like clarification on, specifically for Vex U:
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In this topic, you ruled that removing the internal gears in the motor assembly is legal for Vex U.
https://vexforum.com/t/answered-vex-u-internal-motor-gearing/27350/1
So I presume Vex U would be allowed to 3-D print a motor casing designed to make a shaft connect directly to the motor, and have no internal gearing within our casing. Is this correct? -
It was ruled that we cannot leave open holes in our casings because that would “improve motor performance” (see second link posted).
In this topic: https://vexforum.com/t/answered-motor-cooling/30297/1
it was ruled that cooling a motor was allowed “if you used legal materials to make a blade and then powered it with a legal VEX motor, this would be legal”.
Now let’s say I make a hole in my custom motor casing with the intent to fit a pneumatic tube, and on the other end of that tube I have a 3-d printed fan assembly powered by a legal vex motor, now since it’s not the casing itself improving the motor, but the fan assembly improving the motor, is that legal? -
Is it legal to have two motors (or more) within a single motor casing, assuming this counts as the respective number of motors towards the motor limit?