w60-2726

Introduction:

I need more wings with which to share my quad batteries.

Components:

• Dys Samguk 2207 2600kv motor

• RocHobby 35a 4s ESC

• Dollar tree Foam board & carbon fiber spar

• Frsky RXSR receiver

• Noxe F4 flight controller (flywoo version)

• Beitian 220 GPS

• Lumenier fpv camera

• Emax ES08MA II Analog Metal Gear Micro Servo x2

• FX799T 200mw vtx

• Buzzer

Conclusion:

223g dry. To be honest, this was another one of those planes that I wasn't holding out much expectations for, but turned out better than I expected. It was a bit rough and needed a tune badly, but still did 151km/hr ground speed. Cruise throttle was around 15%. This was just a blast to fly with 4s 1300 quad batteries. Didn't hold back much on the throttle and had 6 mins of pure fun. CG was a bit further back than I planned for, but I totally expected it since I extended the back out a bit for the motor to balance on the CG. I made some modifications to improve airflow, so I'm excited to see what changes to the speed it will do.

Update 6/25/21: I did more tuning and got it flying really well on a day with around 7mph winds. Got the CG exact (it was a smaller window than other wings I'm used to) and was harder to find because while I flew it fine on manual with it being a bit tail heavy, Inav would oscillate wildly on the pitch axis. After an autotune, I had to manually tune down the FF on roll (a bit), and also P & FF on pitch (a lot). I think the current settings are about as good as it will get for a plane of this size and weight. It was shaking a bit on a previous flight with a lot more wind, but I'm hoping the new tune will fix that. The only real shaking today was from the camera being a bit loose on the foam in the front. This not only has unlimited vertical, but the vertical is probably faster than many of my other planes going horizontal. Will need to test again on a more windy day.

Update 10/11/21: Did some testing with molicel 21700 li-ion batteries. Flew proximity without trying to be conservative for 10km. They averaged out to be a bit over 100mah/km on 3s and used a bit over 1000mah. The batteries are 4200mah, so I could've flown for much longer.

Efficiency Logs:

• 12.47km (967mah used) | 3s lion | 77.54mah/km | proximity flying

• 13.3km (1166mah used) | 3s lion | 87.6mah/km | proximity flying

• 13.15km (1088mah used) | 3s lion | 82.73mah/km | proximity flying

• 11km (1190mah used) | 3s lion (21700) | 108.18mah/km | proximity

• 10km (1093mah used) | 3s lion (21700) | 109.3mah/km | proximity

• 10km (1058mah used) | 3s lion (21700) | 105.8mah/km | proximity

• 10km (1130mah used) | 3s lion (21700) | 113mah/km | proximity