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Old 10-20-2020, 12:10 AM
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ron_van_sommeren
homo ludens modelisticus
 
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Join Date: Jul 2005
Location: near Nijmegen, Nederland
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Originally Posted by Suprawill1 View Post
... Is it ok to run a 12S EDF/ESC system on 14S ...
Current and power drawn are proportional to voltage squared respectively voltage cubed.
Going from 12s to 14s, current drawn wants to increase by factor (14/12)≤= 1.3, 30% extra.
Power drawn wants to increase by factor 1.5, 50% extra.
Increase in current with one or two cells added simple table - RCG
(In full: proportional to pitch, #blades, voltage≤ respectively voltage≥, Kv≥ and diameter⁴, small changes, huge increase).
Ignoring bit of extra voltage losses in battery, wiring, controller and motor due to higher current.


Originally Posted by Suprawill1 View Post
.... What I plan to do is run the 12S system with 14S lipos on a watt/amp meter and raise the throttle till I reach just under the maximum allowance of the 12S system and then program my transmitter to not exceed that percentage at full throttle. ...
If current at wide open throttle is too high for the controller then reducing throttle to get current below ESC max.current is not a good idea. It is even harder on ESC than to keep overamping at full throttle. Better to prop down a bit to reduce current.
See:

Last edited by ron_van_sommeren; 11-25-2020 at 08:49 PM.
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