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03-20-2020 02:01 AM  4 months ago
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Musky

rrNovice

Chicago ill

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cgy-750
I have a cgy-750 on a 4 bade heli using 4 servos for the rotor the 4th servo is used in the th/e2 port
my receiver is r7003sb my question is what would one recommend using for the speed control ?
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03-20-2020 04:26 AM  4 months ago
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

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if you are asking about the brand of speed control, i have had great luck with the castle esc's
if you are asking which port to use for the esc, unless things have changed, futabas use the 3rd channel for speed controllers.
drive a rotary, fly a rotorcraft
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03-20-2020 02:51 PM  4 months ago
wjvail

rrElite Veteran

Meridian, Mississippi

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💎Sustaining Member
Musky I have a cgy-750 on a 4 bade heli using 4 servos for the rotor the 4th servo is used in the th/e2 port
my receiver is r7003sb my question is what would one recommend using for the speed control ?
Interesting question. You are asking where in the 750 do you plug the ESC since you've used the slot for a swash servo where the ESC usually plugs in. I believe what you're going too have to do is plug the ESC directly into the receiver and use the ESC governor. Looking at page #10 of the CGY750 manual, frame #3, there is a note that says:
"[Gyro+H4] Must be selected when a [H4 xx] swash plate type is selected. This disables the governor and throttle servo output and the [TH/E2] port on the CGY750 is now the second “Elevator” [E2] servo output."
It appears that the Governor mode of the 750 must be disabled when selecting a 4 servo swash. Having done this the only solution I see is to plug the ESC directly into slot #3 of your RX. You didn't say what ESC you were using but as Copter Doctor said, the Castle Creations ESC work well. I use their governor mode and the ESC doesn't care where the signal is coming from.

Did I read you question correctly? Was this clear?

Let us know what you find out.

Cheers...
"Well, nothing bad can happen now."
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