ORIGINAL: DrMotor


As you can see, a 17x8 prop draws more current than 16x8, and actually gives slightly less thrust.
The 18x6 prop draws exactly the same current as 17x8, and gives more thrust than the 2 other props. Its g/W value is good, at 5.2.

Seems to me, that props to definitely try on the REAL motor, would be 16x8 and 18x6 ...

Pic attached, shows the simulation for the 18x6 prop, with 5S LiPo (18.5V).