dw80-27166v2

Introduction:

The reason I wanted to build another was to first replace my old rainbow and getting some practice laminating wings in the process. I may also try different size motors depending on whether or not the CG allows for it. The other reason was to have another wing which could handle a variety of quad batteries.

Components:

• Brotherhobby 2207 1660kv motor

• Hobbyking 40a 2-6s esc

• Dancing wings rainbow 800mm (with carbon fiber shaft)

• TBS nano rx

• Noxe F4 flight controller (flywoo version)

• Beitian 220 GPS

• Foxeer camera

• Emax ES08MA II Analog Metal Gear Micro Servo x2

• Vivafpv 600mw vtx

• Buzzer

Conclusion:

304g dry. Even with the extra laminate weight, this came out 69g heavier than the previous version, so I was pretty shocked. I extended the wing out further back so I could mount the motor with enough clearance to test with 6" props.

The maiden was fairly successful. The initial autolaunch was successful, but later attempts failed. I eventually had to launch it manually and those went fairly well. It cruises around the mid 20s. I flew it on 4s lipos and 6s lion. Top speed is around 140 and cruising speed is around 50kph. I was satisfied with the performance, but not overly impressed. I felt like it got around the same distance of 10km per 4s 1300mah battery as the w60-2726 did landing with storage voltage except it did it in a lot lower speed. Landings are also a bit less "exciting" as it can fly a bit slower. It started raining as I was testing it, so I can't wait to try it on a better day.

There was an issue with this as the video transmission kept dying randomly. I swapped out the wiring thinking it may have been broken inside causing occasional blackouts, but it turns out that the vtx was overheating with just a single layer of laminate over it. This was strange since I never had an issue with a single layer of packing tape. My guess is the laminate may be just a tad thicker than the tape thus pushing it over the edge. I've since left a hole over the vtx to let it cool and haven't had an issue since.

Update 10/14/21: After enabling 180 degrees on autolaunch, this has become one of the easiest wings to launch with the overhead method. It flies well on 4s and over 100mph on 6s.

Efficiency Logs:

• 13.15km (727mah used) | 6s lion | 55.28mah/km | 5" prop

• 13.46km (754mah used) | 4s lipo | 56.0mah/km | 6042 prop

• 10.42km (691mah used) | 4s lipo | 56.01mah/km | 6042 prop

• 20.65km (910mah used) | 6s lion | 44.06mah/km | 6042 prop - 30 min flight