Archive for July, 2012
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This thread will be much easier to follow and understand if you have prints of the 3 attachments to hand for ease of reference.
An alternative [better?] title for this thread could be "Typical characteristics of e-flight motors"
In this thread I attempt to show how a typical motor behaves with different loads. That is, with different size props.
All values relate to full-throttle operation. Speed variations result from fitting different-size props.
The motor used as an example is a 39 gram outrunner with a Kv of 1501rpm per volt. The supply voltage is 10.5, in accord with the maker's recommended 3S.
The horizontal axis of the graphs is motor speed, expressed as a percentage of the no-load speed.
The shape of the power curves is aproximately correct for any motor at any voltage, but of course the numbers for power, rpm, and prop size, refer only to the example motor.
The shape of the efficiency curve is typical, though the peak value and its %NLS position can be slightly different for other motors.
...Continue Reading
This thread will be much easier to follow and understand if you have prints of the 3 attachments to hand for ease of reference.
An alternative [better?] title for this thread could be "Typical characteristics of e-flight motors"
In this thread I attempt to show how a typical motor behaves with different loads. That is, with different size props.
All values relate to full-throttle operation. Speed variations result from fitting different-size props.
The motor used as an example is a 39 gram outrunner with a Kv of 1501rpm per volt. The supply voltage is 10.5, in accord with the maker's recommended 3S.
The horizontal axis of the graphs is motor speed, expressed as a percentage of the no-load speed.
The shape of the power curves is aproximately correct for any motor at any voltage, but of course the numbers for power, rpm, and prop size, refer only to the example motor.
The shape of the efficiency curve is typical, though the peak value and its %NLS position can be slightly different for other motors.
...Continue Reading
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