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props - 3/25/2013 7:25 PM   
Mythos125


 

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From: salinas, CA, USA
Status: offline 		 Anyone find Pt props pull a lot more amps than an equivalent Mejzlik.

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RE: props - 3/25/2013 10:02 PM   
Henning



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From: Oslo, NORWAY
Status: offline 		What dimensions have you tested?

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RE: props - 3/25/2013 10:29 PM   
jetmech43


 

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Status: offline 		I got one and it pulls less than an apc

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RE: props - 3/25/2013 10:32 PM   
EHFAI


 

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From: Katy, TX, USA
Status: offline 		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.

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RE: props - 3/25/2013 11:30 PM   
Mythos125


 

Posts: 16
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Joined: 6/29/2010
Last Login: 5/19/2013
From: salinas, CA, USA
Status: offline 		 Benched a pt 20x13 @114 amps.Same setup on a Mez 20x13@88amps.Motrolfly 5320 Tp 5000 8s Turnigy wattmeter Os Esc

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RE: props - 3/25/2013 11:41 PM   
EHFAI


 

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From: Katy, TX, USA
Status: offline 		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?

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RE: props - 3/25/2013 11:46 PM   
Mythos125


 

Posts: 16
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Joined: 6/29/2010
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From: salinas, CA, USA
Status: offline 		 Kv on the motor is 277.

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RE: props - 3/25/2013 11:54 PM   
EHFAI


 

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From: Katy, TX, USA
Status: offline 		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.

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RE: props - 3/26/2013 12:03 AM   
Mythos125


 

Posts: 16
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Joined: 6/29/2010
Last Login: 5/19/2013
From: salinas, CA, USA
Status: offline 		 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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