The Syma X11 is one of my favorite quad's to fly. I enjoy flying the geared motor setup for its stability and efficiency. The stock setup gets about 12 minutes of flight on a 380mAh battery. However, the low yaw rates leaves a bit more to be desired.
After watching
Jordy RC on Youtube, his setup provided the best of both worlds. A Hubsan flight controller and upgraded motors from MMW. The Hubsan FC provides better yaw rates, and the option to turn on/off the LEDs during flight.
Sidenote, if you're using a Deviation w/module transmitter, you'll get Telemetry data for the battery status--mine is set at 3.2V.
Materials:
Hubsan Transmitter
Steps:
- Disassemble Syma X11
- Remove motors and Syma FC
- Screw in Hubsan X4 FC. The Hubsan FC will not be a perfect fit, and you'll only be able to get one screw into the board. You can try some foam to reinforce the back of the board if you like.
- Transfer the gear pinion from the Syma motors to the MMW motors (or reuse the original Syma X11 motors if you don't want to upgrade to MMW)
- Insert motors into the frame
- Cut off the MMW connectors. Be sure to leave enough wire length to reach the Hubsan X4 board.
- Solder wires to the board (see photo below for wiring. Red and White are Positive +. Black and Blue are Negative -) Motor position are swapped. The wiring does not need to have reverse polarity, only positions swapped.
- Transfer LEDs over from the Syma FC to the Hubsan FC
- Reassemble the unit
- Swap the prop position from left to right
- Insert battery and test flight
