How to figure what prop to use for electric motor
05-23-2011, 06:45 PM
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How to figure what prop to use for electric motor
I have a 90 size brushless motor and the specs. said to use a 14-10 for 7 cell lipo, but i want to use 5 or 6 cell,what prop can i use?
05-24-2011, 03:58 AM
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RE: How to figure what prop to use for electric motor
Your max revs will drop as a consequence of the lower potential across the battery.
What sort of model is it? A 14x10 will be good for speed... What is the power rating and Kv's? If it's a low Kv jobbie, you may want a bigger prop than that, especially if you're running it on a lower cell count.
What sort of model is it? A 14x10 will be good for speed... What is the power rating and Kv's? If it's a low Kv jobbie, you may want a bigger prop than that, especially if you're running it on a lower cell count.
05-24-2011, 04:44 AM
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RE: How to figure what prop to use for electric motor
Wire Winds / Turns: 16 here are the stats on the motor
Ni-Mh Battery : 16 - 24 cells
Li-Po Battery : 5 / 8 cells
RPM per volt : 380
Max efficiency : 88%
Max efficiency current : 18 - 40A (>81%)
No Load Current / 10V : 1.5A
Max Current : 60A / 60 sec
Dimension : 50 x 65mm
Shaft : 6mm
Max Watts: 1300W
Continuous Watts: 1000W
Weight : 400g (14oz)
Recommended Model Weight : 3,000 - 6,000g (6.6 lbs to 13.25 lbs)
Ni-Mh Battery : 16 - 24 cells
Li-Po Battery : 5 / 8 cells
RPM per volt : 380
Max efficiency : 88%
Max efficiency current : 18 - 40A (>81%)
No Load Current / 10V : 1.5A
Max Current : 60A / 60 sec
Dimension : 50 x 65mm
Shaft : 6mm
Max Watts: 1300W
Continuous Watts: 1000W
Weight : 400g (14oz)
Recommended Model Weight : 3,000 - 6,000g (6.6 lbs to 13.25 lbs)
05-24-2011, 08:43 AM
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RE: How to figure what prop to use for electric motor
Given your motor's 380 Kv rating and an APC 14x10E on 6S (22.2 volts) , a reasonable RPM expectation would be around 6300 running at about 75% efficiency. That would provide about 5.3 lbs. of thrust according to the DriveCalc Simple Prop Calculator. Whether that is enough to power your model depends on its AUW, wingspan and wing area.
05-25-2011, 04:59 AM
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RE: How to figure what prop to use for electric motor
This AXI is very similar and they give some different prop sizes to try...
http://www.modelmotors.cz/index.php?...e=16&line=GOLD
06-27-2011, 01:26 PM
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RE: How to figure what prop to use for electric motor
Hi ! out there.
This one has been bugging me for a long time !
How do they make the elec motors make noises. How do they make beeps and music ?
How do they do it ?
Wally
This one has been bugging me for a long time !
How do they make the elec motors make noises. How do they make beeps and music ?
How do they do it ?
Wally
06-28-2011, 08:40 AM
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RE: How to figure what prop to use for electric motor
ORIGINAL: wtjonessss
How do they make the elec motors make noises.
How do they make the elec motors make noises.
- Jeff
