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HomeAircraftHelicopterHelicopter Main Discussion › 3GX not initialised properly
10-29-2013 03:15 AM  5 years agoPost 1
Vaderluck

rrApprentice

Melbourne - Australia

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My 3GX is connected to receiver AR6200 with satellite (DX6i). In the DIR setup mode, all works ok. But after the setup, when switch on again, the swashplate always tilts to pitch servo side.
I google around and found that is caused by 3GX initialises before receiver is connected to Tx, so it got confused and not initialised properly. Does anyone know how to fix this problem ? (apart from getting rid of DX6i, get a DX8 with 2 sattelite receiver).

3GX is V3.0, I don't know V4.0 would help or not.

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10-29-2013 03:19 AM  5 years agoPost 2
onebigjunker

rrKey Veteran

Wellsville, Ks

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just use the satilite off the 6200 and plug into the side of the 3gx

work hard, play even harder!!!!
Team Empire Hobby/GAUI USA

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10-29-2013 04:24 AM  5 years agoPost 3
dkshema

rrMaster

Cedar Rapids, IA

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I've seen this occasionally when setting up a system. Once you have gone through the DIR mode setup, I find that it helps to rebind the receiver to the transmitter. Make sure you have the throttle set to proper fail safe setting before binding.

No, 4.0 won't help with this, and your DX6i is not at fault.

What size heli are you setting up?

Using a DX6i and a single satellite would NOT be an option, since in this configuration, the 3GX system expects rudder gyro control to happen on channel 7. You don't HAVE a channel 7 in your TX. Also, in this configuration, the 3GX expects Governor control from channel 5. That wouldn't do you any good.

Remember, when using JR and/or Spektrum satellite receivers:

Default channel/function mapping when using satellite receivers is:

(1) THR
(2) AIL
(3) ELE
(4) RUD
(5) GOV
(6) PIT
(7) GAIN

A six channel transmitter and a single satellite connected to the 3GX is just not an option as you won't be able to control rudder gyro gain.

-----

With your DX6i, use your external AR6200 RX with its satellite connected as you normally would. Connect the 3GX unit to the AR6200 receiver using the two special cables provided in the 3GX unit.

Plug the Red wire into the Aileron channel.
Plug the Orange wire into the Elevator channel.
Plug the Yellow wire into the Aux 1 channel (channel 6).

Plug the Green wire into the Rudder channel.
Plug the Blue wire into the Gear Channel (channel 5).
Plug the Purple wire into the Throttle channel.

You still need to get power to your RX. Use the supplied three-wire (red/white/black) cable, plugged into the BAT/Bind port of the AR6200, and the other end plugged into the lower right hand horizontal connector on the 3GX. You may need to disconnect the white wire in this cable, leaving only the black and red wires.

Use your DX6i Gear/Channel 5 control to run the tail gyro gain.

Be sure to rebind the receiver after DIR mode setup, this should stop the unwanted behavior you're seeing.

-----

Update your software to at least V3.1. It is solid, easy to set up, and flies well. V4.0 is hit or miss, and requires experimentation to get something that works.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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10-29-2013 12:19 PM  5 years agoPost 4
RGorham

rrLegend

Livermore, CA - USA

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Check out some of Ron Lund's 3GX videos. The 3GX is a little finicky however it works well with version 3.1 firmware and setup correctly. Good luck, rg

[url=

Watch at YouTube

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10-29-2013 01:34 PM  5 years agoPost 5
dkshema

rrMaster

Cedar Rapids, IA

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Te 3GX is "finicky" if your power source is marginal or inadequate.

With good, solid power, the 3GX is quite easy to operate, setup, and reliable.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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10-29-2013 07:23 PM  5 years agoPost 6
RGorham

rrLegend

Livermore, CA - USA

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[quote]
Te 3GX is "finicky" if your power source is marginal or inadequate.
With good, solid power, the 3GX is quite easy to operate, setup, and reliable.[quote]

I 100% agree when I was using the BEC power off of my castle ice ESC I had some problems. Once I separated my power source to an independent battery through a voltage regulator the problems disappeared and the unit worked very well.

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10-29-2013 11:21 PM  5 years agoPost 7
Vaderluck

rrApprentice

Melbourne - Australia

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Thanks dkshema and rg1.
I am setting up TREX 600N DFC. The power source is B6T so it should be OK.
I will update to V3.1 and rebind it tonight.
I am not sure what is the proper way the rebind it. Because now RX connected to 3GX and its BAT/BIND port is used. Help please.
Use the supplied three-wire (red/white/black) cable, plugged into the BAT/Bind port of the AR6200, and the other end plugged into the lower right hand horizontal connector on the 3GX. You may need to disconnect the white wire in this cable, leaving only the black and red wires.
. If I don't cut the white wire, what trouble it causes ?

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10-29-2013 11:35 PM  5 years agoPost 8
dkshema

rrMaster

Cedar Rapids, IA

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You are using a standard receiver. Bind the receiver to the transmitter as you normally would. Then plug it back into the 3GX unit.

Make sure your throttle is set to the place you wish to use as the failsafe setting when you bind.

The Align 2 N 1 RCE-B6T ought to be fine. It is rated for 6 amps continuous, I have been flying a 600 Nitro Pro with a 3GX as well as a 700 N with a 3GX for several seasons now, using the 2 N 1 as my regulator, both have performed without a hitch.

The White wire should NOT cause a problem in the three-wire set between your RX and 3GX. In general, that cable would plug into the external receiver socket for the channel which would be used to control the 3GX on-board governor. Power gets TO the RX via that cable -- red wire --, ground is the black wire, and the White wire is destined to take the RX governor speed control signal back to the 3GX unit which would use it in conjunction with the built-in governor to control your motor.

Since you are short a channel (need at least 7 to run a governor), the white wire shouldn't matter. The important ones are red and black, that is power.

Just keep in mind your receiver would use the white wire to put it into BIND mode (when shorted to the black wire at power-up), and the 3GX unit is expecting a Governor control input on that wire.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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10-31-2013 11:22 PM  5 years agoPost 9
Vaderluck

rrApprentice

Melbourne - Australia

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I rebind the Rx. Now, it is almost 99.9% the RX lit up before 3GX and 3GX initialise properly.
It is a mystery to me why after DIR setup on 3GX, you need to rebind RX to make it work properly.

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11-01-2013 02:18 AM  5 years agoPost 10
dkshema

rrMaster

Cedar Rapids, IA

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you need to rebind RX to make it work properly.
This is not a commonly needed procedure. I've had to resort to rebinding only occasionally after setting up a 3GX unit. As the 3GX unit only interprets what it sees coming from an external full-up receiver, it can only react to what the RX is doing. It doesn't have a mind of its own. More than likely it is the receiver that gets screwed up.

May also be that you've inadvertently changed a subtrim or other setting in the transmitter after you've gone through the setup process that the 3GX isn't happy with.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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