Futaba 8U and 9C - Dual Servos on Rudder

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T-ster · 10-07-2009, 05:01 PM

I've been using a Futaba 8UAFS for years and finally got a deal on a used 9CHFS. I'm doing all the programming (basically copying what I had in the old transmitter) and am using 2 servos on the rudder in a push/pull configuration one on each side of the tail, each with a pushrod. In the programming I have a channel 7 to channel 7 in the programmable mixers at -100%, -100%. I must have been told to do that at some point, but can't remember why and can't see the reason in the manual.

Any ideas?

hpapilot · 10-07-2009, 05:07 PM

It sounds like that mix would disable a control on that channel. Is channel 7 permanently assigned to a dial or switch? That might be the reason to do it. As long as there isnt a switch or dial assigned to your second rudder channel, a P-mix from channel 4 to the second rudder channel should be all that is necessary...

RJ

T-ster · 10-08-2009, 09:32 AM

Good point. On the 9C I will disable the VR knob and inhibit the mix. I will check tonight to see if it worked.

Thanks.

Cobra1 · 10-08-2009, 01:47 PM

Yes for the 8U that mix would eliminate the knob from moving the surface. The 9C you can just turn off the knob, a mutch better design.

T-ster · 10-08-2009, 09:43 PM

Thanks for the replies. I did find on the 9C the menu to deactivate the knob. All is well and ready to fly.

Thanks.

10-07-2009, 05:01 PM	#1
T-ster Flyin' Around Join Date: Feb 2009 Location: Allen, TX Posts: 14	Futaba 8U and 9C - Dual Servos on Rudder I've been using a Futaba 8UAFS for years and finally got a deal on a used 9CHFS. I'm doing all the programming (basically copying what I had in the old transmitter) and am using 2 servos on the rudder in a push/pull configuration one on each side of the tail, each with a pushrod. In the programming I have a channel 7 to channel 7 in the programmable mixers at -100%, -100%. I must have been told to do that at some point, but can't remember why and can't see the reason in the manual. Any ideas?

10-07-2009, 05:07 PM	#2
hpapilot Wah wah wee wah!! Join Date: Mar 2006 Location: Greensboro, NC Age: 21 Posts: 1,612	Re: Futaba 8U and 9C - Dual Servos on Rudder It sounds like that mix would disable a control on that channel. Is channel 7 permanently assigned to a dial or switch? That might be the reason to do it. As long as there isnt a switch or dial assigned to your second rudder channel, a P-mix from channel 4 to the second rudder channel should be all that is necessary... RJ __________________ Futaba Extreme Flight RC Desert Aircraft___Castle Creations Aeromodel/Hacker Brushless___Thunder Power Vess Aero B&E Graphix Higher Plane Productions

10-08-2009, 09:32 AM	#3
T-ster Flyin' Around Join Date: Feb 2009 Location: Allen, TX Posts: 14	Re: Futaba 8U and 9C - Dual Servos on Rudder Good point. On the 9C I will disable the VR knob and inhibit the mix. I will check tonight to see if it worked. Thanks.

10-08-2009, 01:47 PM	#4
Cobra1 Fuel Burner Join Date: Aug 2006 Location: Monrovia, MD Posts: 170	Re: Futaba 8U and 9C - Dual Servos on Rudder Yes for the 8U that mix would eliminate the knob from moving the surface. The 9C you can just turn off the knob, a mutch better design.

10-08-2009, 09:43 PM	#5
T-ster Flyin' Around Join Date: Feb 2009 Location: Allen, TX Posts: 14	Re: Futaba 8U and 9C - Dual Servos on Rudder Thanks for the replies. I did find on the 9C the menu to deactivate the knob. All is well and ready to fly. Thanks.

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