3Gx and 140 degree swashplate

[Si Goodchild]

Guys, can the 3Gx be setup for use on 140 degree swashplates? If so, is this something you program directly in to the unit or does it rely on the radio? My DX7 doesn't seem to support 140 degree systems by itself so am I stuck?

cheers, Si

[coolice]

Hey Buddy.

To my knowledge no, the 3GX doesn't support the 140 degree eCCPM option and as your DX7 doesn't either it's not something that could be checked on the bench. You need to set your transmitter to the mixing type your model needs to run, then on entering DIR mode the 3GX learns what type it is going to be used with and configures itself accordingly.
This is why the 3GX can be used on older mCCPM models such as the Raptor series, as it would listen for the individual or mixed channel movements when entering DIR mode and configure itself to control these through the cyclic gyro's.
.

[Si Goodchild]

Thanks, mate, I feared that May be the case. Will put the TotalG back in!

SiG

[matjonze]

3gx with hitec aurora 9 working fine with 140 deg swash on my vibe 50, on rails

[coolice]

Hey Guys.

I stand corrected, seems the 3GX can support 140 degree. A simple look at the specs says so, ooops :-)

3GX Programmable Flybarless System





●Operating voltage rangeC 3.5V~8.4V
●Operating current consumption:<80mA @4.8V
●X and Y axis Operating Angle Range:-300~+300 degree
●Z axis Operating Angle Range:-600~+600 degree
●Sensor resolution:12bit
●Supports 90/120/135/140 CCPM swashplates
●Spektrum and JR Satellite antennas support (Replaces original factory receiver)
●Futaba S.BUS system support
●Supports Wide/Narrow Bandwidth Digital and brushless servos
●Compatible with 2 to 5 blades rotor heads

●Built in governor function
●Maximum working voltage:8.5V
●Compatible with 1024/2048 resolution Spektrum receivers
●Field setup without the use of a PC
●Support up to 6 servos
●Automatic servo type recognization
●Operating Temperature:-20~60 degree
●Operating Humidity:0%~95%
●Size:36.5x25.2x15.6 mm Size
●Weight:11g
.

[Si Goodchild]

Yes, but my reading of the situation is that the 3Gx needs a radio that can do 140 degrees too in order to provide the right mixing, and my DX7 can't.

by contrast the TotalG will only accept single servo input (like the old Raptor mccpm system) and then converts to 120, 135 or 140 degree swashplates as you require.

[matjonze]

You are correct. Just checked my radio and my vibe model is setup to use a 140deg swash type

[tourerjim]

From memory if your 3gx is firmware 3 or above it can be done as your tx is set to 'norm servo 1' & the 140 is setup in 3gx dir mode.

[coolice]

Yes, but my reading of the situation is that the 3Gx needs a radio that can do 140 degrees too in order to provide the right mixing, and my DX7 can't.

by contrast the TotalG will only accept single servo input (like the old Raptor mccpm system) and then converts to 120, 135 or 140 degree swashplates as you require.

Hey Si.

No your right, if your Tx cannot do 140 degree then the 3GX cannot, as it learns it's CCPM setup from the inputs it receives during DIR mode setup.

From memory if your 3gx is firmware 3 or above it can be done as your tx is set to 'norm servo 1' & the 140 is setup in 3gx dir mode.

Hey Jim.

Unfortunately the 3GX, unlike other FBL systems needs the transmitter to do the overall CCPM mixing and the 3GX just deals with intercepting the flight controls for gyro corrections.
The Vbar, Beastx etc dictate the transmitter must be set to single servo type output (standard aileron, elevator, pitch channels etc) and all mixing is done by the FBL unit and so can be set to suit the individual model setup.
In Si's case as his DX7 cannot perform the 140 degree mixing then the 3GX cannot receive the right signals from the transmitter for learning during DIR mode and hence it cannot be used in a 140 degree setup.
.

[AlastairC]

There might be a way to make a mix on the dx7. It is talked about here: http://m.rc.runryder.com/helicopter/...+and+140+Swash

[tourerjim]

Hey Si.

No your right, if your Tx cannot do 140 degree then the 3GX cannot, as it learns it's CCPM setup from the inputs it receives during DIR mode setup.




Hey Jim.

Unfortunately the 3GX, unlike other FBL systems needs the transmitter to do the overall CCPM mixing and the 3GX just deals with intercepting the flight controls for gyro corrections.
The Vbar, Beastx etc dictate the transmitter must be set to single servo type output (standard aileron, elevator, pitch channels etc) and all mixing is done by the FBL unit and so can be set to suit the individual model setup.
In Si's case as his DX7 cannot perform the 140 degree mixing then the 3GX cannot receive the right signals from the transmitter for learning during DIR mode and hence it cannot be used in a 140 degree setup.
.

Should of worded slightly different Ian, seem to remember reading" wasn't Align going to incorporate the 140 setup on 3gx v3 like the Beastx using tx single servo, I haven't got any heli's with the 140 servo setup so never given it a thought since until now reading this post.

[coolice]

Should of worded slightly different Ian, seem to remember reading" wasn't Align going to incorporate the 140 setup on 3gx v3 like the Beastx using tx single servo, I haven't got any heli's with the 140 servo setup so never given it a thought since until now reading this post.

Hey Jim.

Good point, my mate Red3 also mentioned last night he recalls hearing Align dropped the 140 degree support from the 3GX in later firmware's.
Just looking in my 450L manual, which is the latest 3GX equipped model I have, it just says "Suitable for all CCPM and mechanical mix systems", so no definitive answer there.

Who's gonna try it?
.

[Si Goodchild]

I checked the supporting software for the 3Gx on my laptop before making the oringinal post - no sign of any such servo mixing functionality being introduced by the FBL unit, hence my assumption that the 3Gx can stabilise any angle of swashplate provided the corresponding TX can provide the right signals as a baseline.