Phoenix Preceptor 90mm
11-02-2023, 10:15 AM
#3
Join Date: Sep 2002
Location: Nijmegen / Nederland
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Note that a motor does not behave like a simple resistor, in that current drawn is not proportional to voltage but proportional to voltage² 
It is a far from a linear effect, resulting in higher current than one would expect.
In your case, going from 10 to 12s, current wants to increase by factor (12/10)² = 1.4, 40% more.
Power drawn is proportional to voltage³
A massive effect.
Power would want to increase by factor (12/10)³= 1.7, 70% more.
Some silly, expensive and hopefully instructive examples
Battery life with brushless ESC and motor - post#6
Vriendelijke groeten
Ron
• Without a watt-meter you're in the dark ... until something starts to glow •
• E-flight calculators • watt-meters • diy motor tips&tricks • Cumulus MFC •
233
It is a far from a linear effect, resulting in higher current than one would expect.
In your case, going from 10 to 12s, current wants to increase by factor (12/10)² = 1.4, 40% more.
Power drawn is proportional to voltage³
A massive effect.
Power would want to increase by factor (12/10)³= 1.7, 70% more.
Some silly, expensive and hopefully instructive examples
Battery life with brushless ESC and motor - post#6
Vriendelijke groeten
Ron• Without a watt-meter you're in the dark ... until something starts to glow •
• E-flight calculators • watt-meters • diy motor tips&tricks • Cumulus MFC •
233
Last edited by ron_van_sommeren; 11-02-2023 at 12:18 PM.
