New Radio 12 FG

[mcomeaux]

I just purchased a Futaba 12 FG and trying to figure out how to link 2 elevator servos to the reciever can any one help me? Is there a web site that can explain the fundmentals in lame
man terms. The reciever that came with it is a R6014FS. Regards Mike

[peterschmidt]

When you set up a new model you just choose "Tailtype" as Ailevator then you have 2 elevator channels.
Here some programming tips:
http://www.futaba-rc.com/faq/faq-12fg.html

[wildhare]

I just started trying to use my 12fg. I have nothing to go by but the manual which is a little short on detail.

I'm trying to set up throttle cut. I can make it work, when I flip the switch the throttle goes shut, but when the throttle is in the open (run) position the throttle stick doesn't work. So it's kind of useless, I can only open the throttle when it's in the closed position. I might have expected the opposite, disable the stick when trying to kill the engine.

Can someone enlighten me what I'm doing wrong?

TF

[mcomeaux]

Thats a safety feature you can only shut it down at a idle on the throttle.

[mcomeaux]

Have you flown your Sukoi 50cc yet? How do you like the Futaba 12fga

[wildhare]

	Quote: Originally Posted by mcomeaux
	Thats a safety feature you can only shut it down at a idle on the throttle.

I have set the throttle cut up every way conceivable and I now understand the problem. Throttle cut ON actually applies the mix to OPEN the throttle rather than closing it. This is obviously not what I want. IT seems to be working backwards.

I updated the software to 1.6 which works the same.

I have not flown anything with the 12FG yet, it will have to wait until I get everything to work right.

I have flown the Sukhoi on other radios many times, what would you like to know.

TF

[DougV]

I hope this is what you need.

The Throttle Cut feature operates once the throttle is lowered below about 25% throttle. You go into the function, turn it from "inhibit" to either "on" or "off", depending upon the switch set. It defaults to the spring-loaded trainer switch, so you'd usually get "off" as the setting.
Cursor to the "Cut Position" and set it. If you look to the right of the screen, you'll see the display. The little arrow will move down to the low-throttle position when you move the throttle stick to the low throttle position. Pull the switch, and the arrow moves to the position you've set in the "cut position" window. Low throttle defaults to 17% of regular movement, so a cut position would be less than 17%, as your engine's carburetor requires.

-Doug.

[wildhare]

never mind. I think I know what's going on.

[reyn3545]

I usually just set up a dual rate instead of using throttle cut... They are the exact same rates on the throttle curve, but the "low" idle just starts at a lower RPM.

[wildhare]

	Quote: Originally Posted by reyn3545
	I usually just set up a dual rate instead of using throttle cut... They are the exact same rates on the throttle curve, but the "low" idle just starts at a lower RPM.

That's a good idea. The way throttle cut works is odd and I'm not sure I like it. I liked the way it was implemented in my 9C better.

What I did as an alternate was to put in a mix of the left slider into the lower section of throttle movement. With the slider set in the center I can adjust normal idle with the regular trim switch, then with the slider I can push it to get a higher idle or pull it back to kill it. This only works in the lower quadrant so it doesn't have an effect above 25% throttle. I think I'll like this better.

This is what I like about Futaba radios, there are usually several ways of accomplishing what you want.

TF

[reyn3545]

Yep... I flew the other brand for a couple of years, then switched to a 12FG when I left my brand new x9303 out in the rain one day! I wanted more channels, and the 12X wasn't going to ship any time soon... so I went to the 12FG. Now I use the 14MZ, and absolutely love the flexibility of the Futaba software. It does have a longer learning curve, forgetting about tripple rates and re-learning about Conditions... but very flexible.

[DA2000]

Back to the original post. When you are setting up dual elevators, one other thing should be considered. If you don't ever expect to use the elevators as ailerons, ala AILEVATOR, your are much better off selecting the normal tail.

On the older radios, the ailevator function was primarily used to match the elevator servos.

On the 12, select normal tail. In the Function menu, designate the two ports for the elevators ELEV. Now just use the subtrim and ATV to set max throw. The trim and mix functions are automatically allocated properly.

[Tin man]

Why would one be much better off doing that instead of ailevator? I did a quick test and could not see any difference. I don't ever use elevator as aileron but would like to know why it could be an actual disadvantage.



--
Mike

[wildhare]

	Quote: Originally Posted by Tin man
	Why would one be much better off doing that instead of ailevator? I did a quick test and could not see any difference. I don't ever use elevator as aileron but would like to know why it could be an actual disadvantage.

Maybe because it's a little simpler, less to go wrong. A trivial difference.

I used ailevator only because that's the way the 9C worked and I wasn't aware that it would work the other way. In the future I'll probably do it the other way.

TF

[wildhare]

I got a clarification from Futaba support about the throttle cut function.

Basically the little pointer on the slider points at 17% and is the default and cannot be changed. If you set the number for movement to 17 then activating the switch does nothing at all except lock the throttle. If the number is less than 17 the throttle closes, maximum travel is at zero. If the number is above 17 it opens the throttle and at the same time locks it.

I asked the [not very friendly] person whay I would want to do that, he said gruffly that it depends on your setup.

So today I learned that the 12FG has at least one bizarre feature and that calling customer support is not something I will be doing a lot. Fortunately as I said before there are many ways of skinning this cat.

I

TF