Show #5 – Building a FunJet in 3 minutes

The beginning of this episode is a time-laps build of the FunJet. I think it turned out pretty cool. After that follows the maiden flight, which went great without any crashes.

Motor: Warp 4 3-turn 2580kV
ESC: Mystery 40A
Battery: 3s OEM 25-35C 2200mAh LiPo
Servos: 2 x Hitec HS-65HB
Prop: 6*4/5.5*4.5/5.25*4.75
Power: [email protected] – 22000RPm (6*4 prop) – 1000 grams thrust
All up weight: 575 grams

Problems with the headtracker

The headtracker that I’m reviewing for FPV-Community isn’t working as it should. The headtracker only registers movement in one direction on the x axis. When I tilt the headtracker forwards, the servo moves forward, but when I tilt the headtracker backwards the servo doesn’t move at all. After several hours of testing I decided to take the headtracker apart and take a look inside of it, to see if I could find the culprit of this dilemma. This is what I found:

On one of the accelerometers a capacitor was broken. This must have happened during construction of the headtracker since the PCB was very well protected inside of the device. I’ve e-mailed AEORC and asked them for the value of the capacitor, hopfully exchanging the capacitor is all that is needed to make it work again…
So for now the testing is at a halt.

The Gu-365 is back

A couple of weeks ago I got my hands on a GU-365 3-axis flybarless stabilizer. I been wanting to build a tricopter for quite a while but the cost have kept me from taking the plunge, but now that I’ve got a 3-axis stabilizer that might work, the cost would drop enough for me to justify buying the rest of the parts.

But I didn’t want to chance that the GU-365 might work so I asked a friend in Denmark that have loads of tricopters to try it out for me.
Unfortunately the results of the testing were not what I had hoped.

– “It was out of control like nothing else I’ve ever flown, and it was FAST, I gave up counting the rolls as I gave everything I had in pilot skills to get it down in one piece…”

This means no tricopter for David, at least not for now…
Hmmm, might put it on a plane…

Click on the “Read More” to get read the entire flight testing and watch a video of the tricopter in actionContinue Reading