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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › ESC Governor mode and cell count
09-14-2009 08:41 PM  11 years ago
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MattHarper

rrApprentice

Lancashire, UK

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ESC Governor mode and cell count
I was going to ask this question in the Gaui-200 area but I think that it probably applies equally to all electric helicopters. When running the ESC in governor mode will the head speed be invariant of cell count (2s/3s etc) ? I'm kinda thinking that the commutation rate of the motor, hence head speed, is proportional to the programmed throttle curve (usually flat lined) If a head speed of say 2000rpm is achieveable with a 2s pack, will it still be with a 3s pack, without adjusting the throttle curves ?

Thanks
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09-15-2009 01:32 AM  11 years ago
bstock

rrKey Veteran

Easton, MD.

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I am guessing (truly guessing) "no"

At 3S you have a higher voltage... and thus the KV rating of the motor changes... so irregardless of the ESC... the motor RPM is changing... and the ESC most likely can't govern it that much back.

Below 80% - ESCs are not efficent... and all bets are off on most. They say the Jazz ESCs are different and better... so maybe with one of them.

Now it is time for someone who really knows... to answer.
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