I think that with esc's connected the inertia of the motors will eliminate the 'notches'.

Roy

And here are the servos with tape on as suggested 👍
Any idea why the travel is so ‘notchy’ when operating them?

Thanks Roy, I did as you suggested and it works! When turning left (submerged) the right thruster seems to jump to full throttle for some reason, not sure why..

Hi yes, what you are dealing with is 2 esc's each set to supply the current used to run the receiver. Inevitably the voltage each esc is supplying is not the same and you only need one of them to do the job.

The best way to do it is to use an extension servo lead and cut the red lead in the wire. Plug one end of the extension lead into the receiver and the other end into either esc.

That way the esc's remain intact.
Roy

Thanks both, it’s worked with mixing servos, I’m just about to try it with brushless ESCs. Do I need to follow the ‘one power lead’ rule if plugging in to the mixer instead of the RX?

Yes, I had realised that it was mixing the esc signals so the description whilst helpful was not complete as the type of esc probably doesn't matter to it.
Unlike the one I have purchased for driving two small brushed motors directly from the mixer. To drive a small cat' model.

Hi ColinJ2, the mixer you have there from AliExpress is marked brushless. BUT it is not just brushless it will drive a brushed esc just as well.
The mixing is done before the esc is involved. It is possible the mixing has taken brushless operation into account.

Has anyone used one?

Roy

You cannot see the movement of the servos clearly in the video, by sticking some masking tape with a line across it on the servo arm will make it much clearer.

Thanks RoyCV and Chris - result! Here’s a video of the servos working as hoped, now to try the ESCs! Watch this space..

https://www.aliexpress.com/i/1005007912352761.html
This is a link to an image of your device showing connection details. Hope it helps.
I would have posted the image but it won't load here due to image type.

Hi Eric. The main servo lead goes to the o/p lead for the throttle. There is a single connecter and that goes to the rudder signal wire which is the inner wire where the rudder o/p is connected.
These single wires fit into the normal 3 lead _ve, +ve signal servo connecter. But only the signal wire is needed.

I would suggest it is only a mixer and 2 off esc's are connected to the o/p of the unit and these drive the motors.
So you can operate the 2 motors from a 2ch. RC set. The rudder control balances between the motors.

If you want a rudder as well then you need a rudder servo and connect the signal wire to the rudder servo connecter in parallel.
Roy

Thanks Chris, yep - got two ‘Shark’ brushless ESCs ready to connect up..

Hi Eric, can't help with the wiring diagram but hopefully you know that you need an ESC for each brushless motor?