cdb280

Introduction:

I saw a picture of something that looked similar online and wanted to build it just for fun.

Components:

• Crazybee F4 2.0 (with one burnt esc)
• teeny f4 pro 4in1 esc
• Dys XM10a esc
• DSMX receiver
• Dollar tree foam board
• Wooden skewers
• 1102 8000kv motors with Gemfan 3025 props
• Blade torrent 1104 7600kv motor with Gemfan 3019
• 5 gram servos x2 (powered by a separate bec)

Conclusion:

This came out to 90g dry. I originally wanted the motors mounted in the front and back of the main rear wing rotating in opposite directions, but the CG did not allow that, so I had to move them to the front. However, this position now allows for differential thrust as well, which may not be such a bad thing.

Update 6/4/20 - Unfortunately, the maiden didn't go too well as it was too tail heavy. The bamboo skewers didn't hold up the the crashes that ensued from an unbalanced plane. I ended up using thicker and longer skewers to extend the canard and move forward the cg a couple more cms.

Update 6/8/20 - Even with the changes, it flew, but was still tail heavy. I've removed the crazybee and moved all electronics to the front canard. It is probably a bit nose heavy now, but will need to test and see. Current weight is 99g dry.

Update 6/11/20 - It flew for a bit longer, but is still far from ideal. At the current weight, It cruises at 75% and the motors weren't able to keep up. I tore out the electronics and went with a single 1104 7600kv motor instead bringing the weight down to 90g dry.

Update 6/13/20 - With the changes, it now cruises well. It cruises at about half throttle, but there isn't enough power to cleanly do aerobatics. They can be done, but you can end up stalling if it is not prepared for in advance. It's actually fun to watch it fly since it's not your typical looking plane, but it is not a great flyer.