Add an independent rudder channel to your H650 RC plane with this custom motor mount.
The mount is designed to hold two 5g servos that can be found here: https://amzn.to/42OCAVy (this is an Amazon affiliate link, which helps support my work).
I connected the stock electronics plus these two servos to my own receiver to fly the model with a traditional RC transmitter. For beginners, you can also connect a radiolink stabilizer for about $11 can maintain the ease of flight like the stock model, though this plane is pretty easy to fly with low rates.
I printed this mount with PETG. I don't recommend PLA as this will be exposed to the heat of the motor and sun.
You will need to use supports to print the model. Here is what it looked like in my slicer. Be sure to set the gap in the supports high enough to enable easy removal (I used 0.27). I've included the 3MF file for reference.

The author marked this model as their own original creation.