<span style="font-size: medium">SIMPLE GRAPHS OF THE DATA
</span>As well as looking at the actual datasheets, we can also plot the data to compare different runs -and also later, these plots can be used to compare different motors.
The parameters measured during the test were: V, I, RPM &amp; Thrust (and also motor temp).
Power = V x I; And we can plot Power against the 2 other measured parameters, Prop RPM and Thrust.
I show 2 simple graphs below.</p>

a. In the first graph on the left, for 3S LiPo, I have plotted Prop RPM vs Power Input, in W.
I have chosen to use Power on the X axis, because this combines both the driving voltage and current drawn by the motor, in one measure (Power = V x I).
-This plot shows that RPM fell, as Power increased. This was because prop size (diam) increased as the data points move to the right, and a larger prop is swung by the motor at a lower RPM.
The blue points are for Run 1, and the red points for Run 2.
However, the important point here, is that both Run 1 and Run 2 gave almost identical plots. The plots almost overlaid each other.</p>

b. In the second graph on the right, for 3S LiPo, I have plotted Thrust vs Power Input.
Thrust increased as Power increased, and this is because larger props (greater diam) generated more Thrust, and required more input power.
The orange points are for Run 1, and the light blue points for Run 2.
Once again, the <span style="font-size: small">important point </span>is that <span style="font-size: small">the plots were very similar indeed, and almost overlaid each other.
</span>
-This again shows that different runs performed on the same motor, give closely -almost identical -similar results.
The readings of Power, RPM and Thrust from a given motor arehighly repeatable and reproducible, for the same set of 6 props used.
<span style="font-size: small">The plots of RPM vs Power, and Thrust vs Power, almost give a "fingerprint" of each particular motor.</span></p>

These plots of RPM vs Power,and Thrust vs Power,will be used to analyse each motor tested in future.
-And will also be used to compare different motors, from different brands.
For instance: ,<span style="font-size: small">IF</span><span style="font-size: small"> two differently branded 30-size motors give readings and also plots which are almost identical, and overlay each other (like the plots shown here) -Then we can be almost totally certain that the two motors are basically the same identical motor underneath, made with all the same internal working components.</span></p>

Finally, we should not be surprised that multiple test runs on the same motor, give almost identical readings and results. A brushless motor is after all, just a few wound loops of wire in the centre, surrounded by a rotating can with magnets on its inner surface. The motor does not change between runs, and the motor would be expected to behave in exactly the same way, and generate the same currents, RPM and Thrust, in each test run made.


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