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HomeAircraftHelicopterHelicopter Main Discussion › 1st FBL setup questions
08-31-2013 03:05 AM  5 years agoPost 1
jsbscuba

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cincinnati, OH USA

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I finally bit the bullet and decided it was time to go fbl. I bought a used trex 450 dfc with a GAUI GU-365 fbl controller. After unpacking it I started checking all screws for locktite and ca where needed. After binding to my dx7 I noticed the swash was completely wrong so I took apart the head and figured I'd start over with the setup since I don't know who set it up or how.

Now for the problem, when I started centering my servo arms, they kept moving.

The question I have is should I unhook the fbl controller, set up my servos and linkages with just the receiver, level the swash, pitch the blades and THEN hook the controller back up for programming or am I supposed to be able to center everything with the fbl controller installed?

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08-31-2013 03:12 AM  5 years agoPost 2
DemetriusUSN

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Virginia Beach, Va USA

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I would disconnect the fbl unit, get everything working in the correct direction first, then plug the fbl unit in.

Minicopter Diabolo 800, Minicopter Triabolo 700, Minicopter Diabolo 700, Minicopter Diabolo 600, Minicopter Diabolo 550, Goblin 770

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08-31-2013 04:09 AM  5 years agoPost 3
D.Magee

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kansas city mo.

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I don't know any thing about a GAUI GU-365 but most fbl units have a mode on them that sets every thing to center so you can set up the heli

Teameagles@HaveFun

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08-31-2013 12:09 PM  5 years agoPost 4
jsbscuba

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cincinnati, OH USA

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The heli was apparently purchased as a flybarred and then upgraded. so those directions do me no good. I'll look closer at the controller manual and see if I can turn it off, if not I'll just disconnect it and make it easy.

thanks for the response

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08-31-2013 12:15 PM  5 years agoPost 5
Retired2011

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Lee's Summit, MO

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The heli was apparently purchased as a flybarred and then upgraded. so those directions do me no good
That won't have anything to do with it.
The controller was not on it when it was flybarred, and only controls the servos based on their center position and inputs from the TX, and the controllers sensor.
You still need to have your mechanics all correct with the servos centered, and at 90 degrees, before you worry about the controller.

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08-31-2013 01:13 PM  5 years agoPost 6
cudaboy_71

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sacramento, ca, u.s.

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i just had a quick read through the manual. it does NOT look like there is a mode to take the controller out of the loop to do setup.

so, ya--looks like you need to center everything with the servos hooked only to an RX.

you're going to need to take your time going through that setup. those instructions allow setup in more traditional FB terms--which is probably a good thing for you as a FBL beginner.....as long as you have a good background in setting up a flybarred heli. feel free to ask questions as you go through it if they don't make sense. FBL units aren't as forgiving as flybars when you just slop in some values ;-)

if it ain't broke, break it.

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08-31-2013 02:06 PM  5 years agoPost 7
D.Magee

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kansas city mo.

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I found this looks like you have to set centering before you install it. Step 2 says after centering servos install it.

Hello all... I will explain how to seup the Gaui GU 365 Flybarless unit! Some people have had problems seting it up, so I am going to write a short how to..

Step 1 : Get your radio and make sure all sub trims, EPA's and expo are set to default. Plug in the servos for the swash into the corresponding ch on your rx. Once you do that you can set your servo reversing and sub trim, you also want to go to Swash mix and change it so that the swashplate is moving in the correct directions.

Step 2 : Now that all the servos are centered and moving in the correct directions mount the GU 365 where you would like.. It can be mounted vertical or horazontal. If you mount it vertical make sure switch number 4 is in the "off" position, When mounted horizontal swicth 4 should be in the "on" position. Plug the servos into the correct plug on the GU 365. They are labled on the unit ALE, ELE, PIT, RUD, and ESC. The wires comming out of the 365 are to be pluged into the receiver. Here is what the color's are...

3 wire (ch-aileron)
Red (ch-elevator)
Orange (ch-throttle)
Yellow (ch-rudder
Green (ch-5/gyro gain)
Blue (ch-pitch)

Step 3 : The GU 365 allows you to use two types of servos, Digital and analog.. You can choose the type of servo for the tail and the swash by using switches 1 and 2... Switch 1 is swash servo type, for analog servos the switch should be in the "on" position and for Digital and the "off" postition, same for the tail servo type but use switch 2 to select Digital or analog...

Step 4 : If you are using a seperate gyro other than the built in tail gyro, unplug the yellow and green wire and plug your gryo rudder and gain wire into the receiver directly.

Step 5 : once you set the EPA or swash value in the radio you need to input it into the GU 365... First make sure switch number 3 is in the "on" position... Turn your transmitter and receiver or plug the battery into the esc, let the GU 365 initialize and set.. The light should be green, if it is not turn the gyro gain or EPA on ch 5 up untill the light goes solid green.. Next turn the number 3 switch to the "off" position, the light will start to blink red... Move the Tx elevator stick to the full up position untill the light starts to blink green, once the light starts blinking green you can let the stick go and turn switch number 3 back to the "on" position...

Step 5 : Now its time to set the gyro direction for elevator aileron and rudder... Looking at the nose of the helicopter when you tilt the heli to the right the swashplate should move to the left, looking from the side of the heli when you tilt the heli forward the swash should tilt opposite and go back... If the aileron or elevator is reversed switch number 5 and 6 are the reverse switch for aileron and elevator, Switch 5 is aileron and switch 6 is elevator... Once you have the swash set to the correct direction set the tail so the tail moves in the correct direction and when you move the heli the gyro corrects in the opposite direction... If you move the tail and the gyro moves the same way the then the gyro for the tail is reversed and can be fixed by changing switch 7 to the "off" or "on" position...

Step 6 : Now that all the gyro directions are set its time to set the gain.. the gain is set at the factory at a default position, when you start making adjustments make very small ones becasue it doesnt take alot.. The adjustment Pots are labled Ale 1, ele 2, and rud limit 3... Set your rudder limit so that you dont get tail servo binding in either direction.. When setting the Aileron and elevator gain settings it is pretty much different for all helicopters so I am not going to give any value.. Start with what it is set at from the factory and if the heli shakes from the head turn the gain for both aileron and elevator down a little untill it goes away... The lower the gain the more sensitive the heli will feel so it is best to have it as high as you can without getting any oscillation... To set the tail gain is either set with the EPA on ch 5 or gyro gain in your radio...

Well I hope this can help some of the people setup their Gaui GU 365 Flybarless gyro system, It works very good for me and is a great stabalization system for the price.. I got mine at http://www.flying-hobby.com which had very fast shipping and great service... If you have any questions just post here in the thread or PM me... I have also attatched the manual for anyone who would like to take a look at it.. Thanks for reading!

Teameagles@HaveFun

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09-01-2013 01:38 AM  5 years agoPost 8
jsbscuba

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cincinnati, OH USA

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Thanks for the replies, I was thinking I had to remove the controller set up the heli and then reinstall the controlled just wasn't sure. The replies were a big help. The 450 is now set up and I'm ready to start with the controller(tomorrow).

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