Align 3gx

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Home › RC & Power › ✈️Aircraft › 🚁Helicopter › Flybarless Rotor Head Systems › Align 3G › Align 3gx

10-28-2020 07:22 PM 5 months ago

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0Post 1

Gas Power

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Reidsville, NC

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Align 3gx

Just finished my Forza 450 with the 3gx. Hover flight feels very locked in. When I give rudder input, I get forward motion with the heli. I sat it the table, there's no swash movement when I give rudder. What could cause this in flight?

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10-29-2020 10:39 PM 5 months ago

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Rojoalfa

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Punta de Mata, Monagas-Venezuela

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Wait a minute!

Rudder input can't cause swashplate movement.

Either you have a activate mix on your TX or malfunction on 3gx.

First... Check your TX. No revo mix, nothing to do with mix on the setting.
The only mix is the swashplate function.

Don't fly your bird!
Avoid a crash!

Let check again your radio setting.

/Saludos cordiales,

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10-29-2020 11:48 PM 5 months ago

0Post 3

Gas Power

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Reidsville, NC

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I have checked, I would think if there was a mix, then it would move the swash while sitting on the table. The swash stays level

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10-30-2020 12:29 AM 5 months ago

0Post 4

Rojoalfa

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Ok... So no problem with mix setting.

You got two potentiometer... One for aleiron, one for elevator.

According to your observation, there is a little bit movement on elevator causing by elevator gyro.

Two posible causes :

1. Very low rpm.
2. High gain on elevator.

If you moved this pots, I would say to put both pots on default position (12m) each and start the setting all over again.

3G/3gx are a little complicated to setup at low rpm. So, your 450 heli must run at to 3000 rpm to proper 3gx to functions from default setting.

/Saludos cordiales,

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10-30-2020 12:46 AM 5 months ago

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Gas Power

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Ill try that, thanks

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10-30-2020 12:53 AM 5 months ago

0Post 6

Rojoalfa

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Let us know your progress.

First, check rpm and increase to 3000 rpm if your gyro setting are the default.

If this setting are not the default, start all over again as we said above.

/Saludos cordiales,

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10-31-2020 03:04 PM 5 months ago

0Post 7

Jerry K

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Houston Area

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Gas Power When I give rudder input, I get forward motion with the heli. I sat it the table, there's no swash movement when I give rudder.

This is the problem trying to diagnose a problem remotely. First does the heli drift forward or does it fly forward? The amount is critical and we do not have that. What does it do in a full 360 piro? Does it fly around in a circle? There is much more going on in a FBL when it is flying that sitting an table.

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10-31-2020 03:47 PM 5 months ago

0Post 8

Gas Power

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The heli goes forward when giving rudder input to do a piro.

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10-31-2020 07:06 PM 5 months ago

0Post 9

Jerry K

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Houston Area

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Gas Power I get forward motion with the heli.

Gas Power The heli goes forward when giving rudder

I get that!
1. What is your experience level?
2. Do you expect the heli to sit still with rudder input?
3. Which way is the wind blowing, when the heli moves forward?
4. Forward is a relative term in a pirouette, does it follow the nose or the direction it was pointed?

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10-31-2020 10:47 PM 5 months ago

0Post 10

Gas Power

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Reidsville, NC

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I've been flying rc for about 40 years, heli's for about 15 years. I know the difference between a drift and forward motion. All my helis are setup (Flybarred,) to where they will hover hands off. This is only my second FBL. I can usually bring the heli to a hover and do a rudder piro and the heli stays with minimal drift. This one with the 3gx will nose down and go forward when doing it.
To check for mixing, I sat it on a level surface and checked to see if the swash was moving when rudder was given. It's not.

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10-31-2020 11:20 PM 5 months ago

0Post 11

Jerry K

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Houston Area

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Since you are not a noob we can get past that. Next item since you are new to FBL (I do not mean to knock your unit because it will fly) But do you know about the reputation of the FBL unit you have chosen? These can generally be purchased here for about 25.00. My honest opinion would be to look for one of the more modern FBL's. You unit went out of production about 5-6 years ago (There is no longer any support) and was never widely accepted. (And I am an Align guy) You may be able to get it to fly correctly, but it does have quirks like you described. I am sorry to be brutally honest, but sometime it is...

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11-01-2020 03:46 PM 5 months ago

0Post 12

Rojoalfa

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3gx is a good gyro.

If someone want to fly with this 3gx... what is the problem?

Is it vintage?

There is a lot of folks flying vintage helis, so all of them have to change this gadgets because electronics onboard are cheaper or something?

Chill out my friends...

/Saludos cordiales,

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11-01-2020 06:04 PM 5 months ago

0Post 13

Jerry K

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// I did mean to offend! There is nothing wrong with vintage at all. Just remember it (is) vintage and flys like vintage. Back in the day the this FBL didn't have a very good reputation and support was minimal. This one had a history of tipping on take off.

I also tried to explain what happens in the air is much different that what happens on the bench. That means that just because there is no interaction on the bench does not mean the FBL wont cause it in the air.

I think both of us agree, a heli will not go into forward flight with the application with rudder. And there is no interaction on the bench from the TX. SO, what does that leave? There is programing in the FBL causing it. He may be able to find someone that is still flying a (vintage) 3GX but I am willing to bet they are few and far between. Call align and ask questions about this vintage FBL and see how far you get.

This is referred to as being a realist. Understand what you have and work around it, but putting on blinders will not solve the issues at hand.

BTW my entire fleet is (vintage) Align helis, so I have no problem with (vintage) just not a 3GX.

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11-01-2020 08:36 PM 5 months ago

0Post 14

Rojoalfa

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If one 3gx is faulty, it doesn't mean the rest of 3gx are bad.

If you have a 3gx operative.
What is the problem?
Install it and fly!
If you don't like it don't used the 3gx.
Everybody happy!