Hi have tried separate bec from another esc with separate battery and battery pack by itself. Both fitted to receiver bind/batt plug. Still the same.
Have ordered a turnigy transmitter now. Obviously Spectrums don’t like mixers.

Thanks haven’t tried that. Will give it a go

I understand. I am still inclined to think that the issue is in the transmitter, but just for the sake of it, have you tried using an external power source, either a separate BEC or a battery pack, for your receiver package? I am not sure why this makes a difference,, but I have run into it.

Sorry my explanation not clear. I meant the bec supply coming from the esc on one.I disconnected the the red ve wire as is normally done when using two esc’s together. So the receiver only receives one ve voltage.

I am a little confused,( this is not an arguable point), but it appears that you have run power from one of your ESC's to your BEC?
If you have a BEC available, then you should be eliminating power from BOTH Esc's. In fact, I was going to suggest eliminating your Esc's as a power source for your receiver package. To do this, disconnect the red lead from the servo plug on both Esc's.
Jonathan


Jonathan

Hi,
An age old problem. Spektrum, JR and Hitec all have aircraft mixers and outside of an aircraft can be a real b**ch to programme. The manual(s) supplied are complicated to say the least when you move outside what the radio was designed for.

Hi am going to try what RN Munich suggests and try switching off mixers.
If no success will just keep the spectrums on boats without mixers.

Must look into manual didn’t know I could switch off mixers. Outputs in all channels set at max motors are identical and fitted on bench have also tried on boats 2 x 600 2 x 400 and two geared motors all identical pairs 2 different kinds of esc’s. Have tried with throttle and aileron, throttle and elevator, and throttle and rudder always the same one motor first and it is always from the esc that is suppling power to bec the other esc has red wire disconnected. I have now tried four different mixers all the same.and followed all the instruction on them.
All work good on the turnigy which has had no adjustments made to it. That is why it must be in the spectrum transmitters as the 6i has the same problem.
Elsrickle is the small village where I was brought up.
Many thanks must get the mixer switched off

Have set both channels to max both the same motors ok and matching have done loads of tests problem is definitely in transmitter settings

Also have a DX6 that gave me problems in the same situation. I think they are a bit like Hitec, very difficult to set up on non aircraft. Saying that my DX6 is now in a 1:14 semi truck which seems much happier. My Hitec Optic is on the shelf as turning it to 2.4Ghz equals the cost of a new radio!

That's what I was thinking TD👍
I have a Spektrum DX6 and it comes with a whole load of 'wizzbangs' for aircraft, drones and choppers set as Default. As do 99% of sets today🤔
First thing I always do OOB is to switch off all mixers and set servo travels etc to 100% i.e. 'standard'. It could well be that this was done on his friend's set.
If one of the outputs Elsrickle is using is set to say 100% and the other to anything different that might cause this problem.
(Just discovered that Elsrickle is a village in South Lanarkshire, Scotland.😉)

On a more mundane level!
As you say the motors may also not be very well matched.
Some oiling and 'running in' together on the same power supply may help there.
Had to do that on my twin shaft Graf Spee.
Purely mechanical level: binding or stiffness in one of the shafts?
Also a problem I had on the Graf Spee, one shaft was very slightly bent☹️
The fact that all seems to work using the Turnigy seems more to suggest TX setup is the culprit though.

Good luck Elsrickle 🤞
Which mixer are you using? Some types recommend setting both forward and reverse speeds to 100% at the ESC - if possible.
BTW: I assume you have disconnected one of the red supply leads between ESC and RX.
If not they might be 'fighting' each other🤔
Cheers, Doug 😎

Have you set the two motor channel,s that you want to mix, to the same neutral point including the trims? Also, if your radio has some customizing available, check to make sure that the two channels are set to function the same, ie, that one is not using an exponential rate while the other does, this would cause the channels to mix, but at different rates. If you get rid of all the "wiz bang" adjustments to the two channels, I am guessing the throttle and elevator channels, The two channels should output the relatively same signal, which, in turn, should mix relatively evenly. I guess, lastly, check to make sure that your two motors do run at the same speed at a certain throttle setting.
Hope this helps. Please let us know what you discover.

Hi Ian,
I have never used motor mixers before so it looks like i will not be able to help, sorry.

Martin555.

Hi Martin we had a look at that but the two transmitters are totally different and were unable to do any comparisons.
Ian

Is it possible to sit down with your friend (social distancing) and go through the settings of his transmitter and compare them with yours ?

Martin555.