Hi,
I believe this thread and my answer within will clarify how exactly our thrusters, and all brushed/brushless DC motors in general behave at increasing voltage supply.
Power is not held constant- for a higher voltage input and constant resistance, current will always increase according to Ohm’s law (I = V/R). At 20 V, a T200 will draw about 32-32 A, and produce about 15 lbf thrust. As current draw increases, stator heating increases by P = I2R. Past a certain point, the heating will be great enough that the magnet wire that makes up the windings overheats, burns off the enamel coating, and shorts, destroying the motor. We’ve found that for constant draw, the max safe value is about 30-32 A, leading to the 20 V max voltage rating. This assumes running anywhere in the throttle range, including full throttle.
However, since lower throttle reduces duty cycle and thus the apparent voltage at the ESC, running at 50% throttle at 24 V is effectively the same as running at 100% throttle at 12 V.
0.5*24 =12 *1.
There is a more detailed explanation in the first link above.
-Adam