dw8-27166

Introduction:

I wanted an efficient 4s which could use the same batteries as my 5" quads so I can bring one set of batteries and fly both interchangeably. I didn't want to burn thru the batteries quick, so I went with a lower KV motor. I also wanted to use a bigger prop, but didn't want to cut the foam yet to fit one in until I've tried it.

Components:

• Dancing Wings 800mm wing kit

• BrotherHobby 2207 1660kv motor

• Furibee 30a 6s ESC

• Frsky xm+ receiver

• Noxe F4 flight controller

• Beitian 220 GPS

• Foxeer camera

• 2x 9g servos

• FX799T 200mw vtx

• 5v regulator for servos

Conclusion:

235g dry. After completing this, I think the one thing I would change is the camera placement. In the event of a crash, the battery will probably push and break the camera. If I were to do it again, I would probably mount the camera slightly off center instead. Wing area is .596sqft. 8.2oz wing + 6.4oz battery = 14.6*1.677= 24.48oz/sqft.

Update 12/3/20: Maiden went really well even though it was a tad windy around 14mph. The only thing I did after the initial flight was to dial in a bit of reflex. I didn't like the camera in front of the large battery, but thankfully with the headwind, it does land rather easily. An old 4s 1500 lipo flew for 10 mins landing with over 3.8v per cell. My guess is that this can probably stay in the air for about 20 mins or so. The only problem with this wing is that the OSD is flickering like crazy due to noise. Gonna see if I can put the camera to a common ground to fix it.

Update 12/9/20: I fixed the OSD issue by running a common ground to the FC's 5v rail. It took a couple hours of trial and error until I finally stumbled onto that fix. Now there are no more OSD issues. The worry with the battery crushing the camera on landings hasn't been big yet since the landings are fairly easy, but I suppose it could still be an issue if the wing crashes. Flight times are still great. I may make a longer range version of this in the future with crossfire and a more powerful vtx.

This is retired after a winter crash into a fence due to my fatshark goggles blacking out in subzero temps. For some reason, these goggles need about 15-20 mins warmup time before they can be reliably used in really cold weather. The leading edge of one wing was chipped away and could not be repaired.