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props

Old 03-25-2013, 10:25 AM
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Mythos125
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Default props

Anyone find Pt props pull a lot more amps than an equivalent Mejzlik.
Old 03-25-2013, 01:02 PM
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Henning
 
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Default RE: props

What dimensions have you tested?
Old 03-25-2013, 01:29 PM
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jetmech43
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Default RE: props

I got one and it pulls less than an apc
Old 03-25-2013, 01:32 PM
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Default RE: props

Nope, measured in flight, a Mejzlik 20.5x12WE draws a few amps max more than a PT 21x12WE on a Q80-14. Flight mAh similar.
Old 03-25-2013, 02:30 PM
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Mythos125
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Default RE: props

Benched a pt 20x13 @114 amps.Same setup on a Mez [email protected]olfly 5320 Tp 5000 8s Turnigy wattmeter Os Esc
Old 03-25-2013, 02:41 PM
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Default RE: props

As Smooth Pass, I also find the PT to draw slightly less than APC on the bench. Is your motor significantly higher kv than the Q (210), possibly a higher rpm explains the difference?
Old 03-25-2013, 02:46 PM
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Mythos125
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Default RE: props

Kv on the motor is 277.
Old 03-25-2013, 02:54 PM
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Default RE: props

I notice that you're running 8S - my experience is w 10S - explains the higher A than I see. However, considering about 3.5v/c at WOT your motor is turning 700-800 more rpm. Maybe the drag profile of the props at the higher rpm is enough to account for your observed measurements. Seems like a bit much prop for 8S.
Old 03-25-2013, 03:03 PM
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Mythos125
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Default RE: props

Your right about it being too much prop.I like the speed of the 20x13 but I have to be careful with throttle management.I think a 20x12 is probably better suited to my setup.

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