Low Profile Rakonheli 66mm With Beecore Brushless FC

An all-in-one brushless FC and ESC board has finally been released. It took a while for me to get my hands on one and even longer to get to building with one. Now, I use it with my favorite brushless whoop frame. Here’s how to build Rakonheli 66mm brushless whoop with Beecore Brushless AIO FC and ESC.

Parts and Equipment

For this build, I used the following:

  1. Rakonheli 66mm Brushless Whoop frame
  2. Rakonheli 31mm 1mm shaft 3-blade clear propellers
  3. X-Racer X-1 frame
  4. Beecore Brushless AIO FC and ESC
  5. Flysky RX2A Pro Receiver
  6. Turbowing Cyclops 2 5.8G 48CH 25mW VTX
  7. Kingkong 800TVL 150 degree FOV camera
  8. Racerstar BR0703 Racing Edition 15000KV Motors
  9. Soldering iron
  10. Soldering wire
  11. Desoldering pump
  12. Flux
  13. Wire snips
  14. Double-sided tape

Build Procedure

  1. Start by adding plugs to the motors. I left around 20mm wires for the motors and 10mm wires for the picoblade connectors
  2. Insert shrink tubings and solder the motor wires to the connector wires. This is probably the hardest part of the build. You will need to trim the motor wires and strip the ends. Then, set your iron to 400°C, add some solder to the tip and  burn off the copper wire’s coating. Finally, solder with your iron set to 350°C and use flux.
  3. Shrink the tubings. You can optionally add another bigger shrink tubing over the smaller ones.
  4. Motors are ready
  5. The Beecore FC with Molex Picoblade connectors won’t fit the Rakonheli frame. You will need to grind out the ears used to mount the old ESC and FC stack. A Dremel tool will come in handy.
  6. Remove the camera mount and the canopy pins from the donor X-Racer X-1 frame
  7. Assemble the frame. There are lots of tiny screws of different sizes. A vernier caliper will come in handy

  8. Review flight controller pad layout
  9. Solder the motor sockets to the FC
  10. Solder a battery pigtail connector to the FC
  11. Solder the RX wires to the FC
  12. Solder the VTX and camera wires to the FC.
  13. Mount the electronics and motors onto the frame
  14. Install the props and the canopy
  15. Connect the motor plugs to the motor sockets and put on the battery holder.
  16. Check continuity between B+ and B- with a multitester. There should be NO continuity.
  17. Cross your fingers, plug-in the battery and check for magic smoke
  18. Done!