RE: Hacker A30-12L vs Turnigy SK3 3542-1000Kv -Head to Head PERFORMANCE TEST
<span style="font-size: medium">CONT:
</span>5. The current and power ratings that Hacker give their Sunray-manufactured motors, are often said to be "conservative" i.e. it is generally thought that the max current and power ratings can be exceeded by some margin, without damage to the motor. When a 4S LiPo pack was used with the 13x6.5 prop, this gave 69.2A and 920W. Perhaps a prop like this can be used, as long as the plane is not flown at full throttle ("Wide Open Throttle" -WOT) all the time, which might then damage the motor.</p>
6. For the 14x8.5 and 14.8 props on 4S LiPo, the low values of about 3g of Thrust per W of Input Power suggest that these props may have been overloading the motor to some degree.. The fact that they also had low values for “RPM as % of Kv x V” and also for Efficiency % also suggested that with 4S LiPo, they were overloading the motor.</p>
7. This A30-12 L motor, with a 13x6.5 prop on 4S LiPo, generated just over 3kg of Thrust for a current of 69.2A. With 3S LiPo, this prop produced a Thrust of 1.73kg for 39.5A. These would appear to be good levels of current for a 150g motor.</p>
8. For this testing, I have deliberately used 3S and 4S LiPo packs, to simulate what we all use in the real flying situation. The usefulness of these data, is that they show -using a given prop and given number of LiPo cells - what level of current and thrust we can expect for this motor.
These data also show us what ESC might be best be used with this motor. Since this motor could generate up to 77A with larger props, it would seem that a 70A ESC and perhaps an 80A ESC might be the best option, especially if intending to use larger props.
</p>