QuadPlane Conversion of Hobby King Bix3 Trainer

I have continued my Bix3 conversion thread here using Plane v3.8 firmware.

hai gregā€¦i thought that the bix3 motor only support 3cellsā€¦

did u always full throttle or notā€¦and is there any limitation for that bix3 motorā€¦ im still afraid to use 4cells lipo batt coz i read that the bix3 motor only support 3cellsā€¦

It worked on 4s for a season and was long enough to prove performance. The throttle was usually around 50% and there is good airflow around it. The stock motor quality is low and you have to deal with a cheap prop adapter so an upgrade like I did on the v3.8 thread extension link may be needed eventually.

how you setting the transition between quad n fixwingā€¦

I typically change the flight mode from QSTABILIZE (or QHOVER) to FWBA (or CRUISE). I never use QLOITER except for initial quad testing to verify the BARO and GPS performance.

okayā€¦thanks a lot manā€¦appreciate ur replying my question.

hello greg ,
can you give a brother a help ?
im building Quadplane like you
do i change q_frame_type
to h_class ?
(my frame is like your setup )
how about the wiring of the motors and the servos and the esc calibration can you plz tell me your setup .

Hi Mohammd,

Welcome to the APM forums!

Itā€™s tough for me to remember the details of a project from 4 years ago. Fortunately, most the information has been added to the APM WiKi in the QuadPlane Support section.

In my setup, the Q_FRAME_TYPE is set to 1 for X frame. Use the QuadPlane Frame setup section and Motor Order Diagrams to determine if your setup is X-frame or H-frame.

The ESC Calibration Procedure is also in the WiKi so spend some time reading through it or use the search engine to find things faster.

Good luck!

Hi there @GregCovey . This isnā€™t really an pixhawk question. More of a setup one. I was trying to replicate your first phase with my bix3. Two unfortunate things happened.

How do you keep the blades from cutting the wires of the GPS? I tried your setup but eventually the blades run so close to the frame that the wire on top of that got cut by the blades.
Talking about the propeller. Did you use the one that came bundled with the Bix3? Iā€™m trying the out-of-the-box config with the recommended battery from hobbyking and thatā€™s not even enough to get the Bix off the ground. I ran a few ground tests and tried to eventually take off but no luck. Not enough power to take this bird of the ground.

Hope you can help me out. You really are an inspiration.
Thanks in advance.

Hi Nuno,

You can cut a ā€œVā€ into the foam and lay the GPS cable below the surface. Then glue it in place with Beacon Foam-Tac. Perhaps you can also slightly lift the aft end of the wing assembly to raise the motor pod.

The 9oz Multistar 3s 4AH pack balanced the stock Bix3 perfectly. The Bix3 QuadPlane conversion uses a ZIPPY Flightmax 2800mAh 4S1P 30C Lipo pack to start which weighs about 10oz. This information is in post 1 and 4, respectively.

I have continued my Bix3 conversion thread here using Plane v3.8 firmware.

Cheers!

Love this!!
Iā€™m going to convert this to a QuadPlane:


Iā€™ll take some of your really cool ideas, I keep you up to date with the process.

Thanks for the really cool and detailed information you provided @GregCovey