Last week I was, finally, able to perform a maiden flight of my DIY wooden quadcopter (here and here). I will not say it was huge success, but it was a success alright. What went like expected? Well, quite alot. First of all, it flies and has enough thrust to weight ratio to do flips and rolls. And is pretty stable in hover. What went not like expected? It is highly unstable on yaw. Really, really unstable. Probably rear propellers are too close to each other and I have to work on PID settings. As soon as I will have enough spare time…
In a mean time, here is a short video from DeadRat’s maiden flight:
Final configuration goes as follows:
Motor to motor diagonal: 500mm,
Motor to motor front arms: 370mm,
Motor to motor rear arms: 300mm,
Materials: 3mm plywood and 15mm wood spars
Motors: Suppo A2212/13 1000KV
ESC: XT-Xinte 30A
Flight Controller: OpenPilot CC3D (clone)
Battery: Turnigy 5000mAh 3S 25C
Propellers: Gemfan 1045
Start weight: 1212g
Hover time: 21 minutes
Next steps: tune it up and move battery to top. Somehow I do not want to construct a landing gear for it…
Work on wooden quadcopter from this post continues. This weeken I’ve been able to almost finish. Almost. Frame itself is done, motors and ESC are in place, electric cables soldered, but this wooden multirotor is grounded. The reason is flight controller Thunder QQ Super. Why? Because it is crap. Really. The first unit was broken and 2 motor channels were not working. Fine, it happens. Seller has sent me second unit. It arrived few weeks ago, but I never had time to check it.
Yesterday I finally connected second Thunder QQ Super to radio receiver and motors. And what? One of the motors is not spinning. ESC is only beeping and this is all. After connecting this ESC to radio RX directly, motor spins just fine. There are also no problems with this ESC when used with different flight controller (OpenPilot CC3D). It only does not work with QQ Super. Why? No idea.
OK, this time it’s not 100% Thunder QQ Super fault. It is more like incompability. But very frustrating incompability. Either way, new flight controller should be on its way and in 2 weeks my quadcopter from wood should be fully operational.
I must say I’m happy with results. Frame is lighter than I expected and itself it weights only 256g. With motors and propellers, weight goes up to 615g and 1100g with ESC and battery. So, it’s not light, but not so heavy after all. And it’s very rigid.
motor to motor diagonal: 500mm,
motor to motor front arms: 370mm,
motor to motor rear arms: 300mm,
frame weight: 256g
And it finally has an official name: DeadRat.Why DeadRat? Because it’s a dead cat frame type and we have a pet rat. And my older daughter likes the name very much.
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