{"id":573,"date":"2016-04-29T10:54:41","date_gmt":"2016-04-29T07:54:41","guid":{"rendered":"http:\/\/tulos.tuu.fi\/?p=573"},"modified":"2016-06-14T09:25:04","modified_gmt":"2016-06-14T06:25:04","slug":"jos-kuitenkin-x-shape-racing-quad","status":"publish","type":"post","link":"http:\/\/tulos.tuu.fi\/?p=573","title":{"rendered":"ifelse – X-shape racing quad"},"content":{"rendered":"

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Maiden flights 6.6.2016\u00a0<\/strong><\/p>\n

Power<\/p>\n

Used Dalprop 3-blade 5″ on maiden. Didn’t notice any massive differnce to my Sunnysky 2204-setups except the overall sound seemed more even and much more smoother. Maybe this is because of the pro-version of little bee\u00a0ESCs? (higher PWM frequency?)<\/p>\n

I got 6 minutes flight time (with semi-hard acro’ing) on 1800mAh battery. No flight time difference. Motors (RCX 2205) and ESCs (littlebee 20A pro) were not warm at all, almost totally cool.<\/p>\n

Control<\/p>\n

I really have to admit that I couldn’t notice any difference now when I flew on sbus compared to CPPM. Experts say there is a day-night difference but I doubt it a little. No difference on my skills.<\/p>\n

Boris changed the expo functionality between 2.7.0 – 2.8. Dunno if I’m really satisfied with it. Maybe I liked more 2.7.0 expo style. I was flying with rcrate 1.0 and r&p rates to 0.9 and the flip was quite aggressive with super expo. Not that I couldn’t handle it, but it had a really “switchy” feel, like on\/off command style. I probably like more linear style than this way.<\/p>\n

To be fixed<\/p>\n

Foxeer camera picture is really crappy by default. Need to modify the shipped joystick-cable to get access to video + controls same time. Some lines across the picture, probably because now I need to use a switching regulator because the littlebee’s fry the camera otherwise. Must test with capacitor.<\/p>\n

Some little twitching on the flight performance and definely clear propwash effect (running\u00a0BetaFlight\/MOTOLAB 2.8.0 Jun \u00a02 2016 \/ 09:48:00 (09f5c85)). Ideas: more gyro LPF, betaflight 2.7.0. Blackbox into use.<\/p>\n

Problem solved:<\/strong> Motolab Cyclone FC was defect, the gyro made sudden glitches in-flight (no signs of these when motors not running). Changed a new Cyclone FC and it works flawlessly, no signs of glitches at any time.<\/p>\n

Because of debugging I ended running on 500 looptime, oneshot125 and it feels the best racer I have had so far.<\/p>\n

Camera angle<\/p>\n

First tried with maybe 25-30 degrees angle but that’s too little to really use the power from this copter. 35 degrees is really close to correct. I don’t need to fly fast, but when I need to accelerate to another direction (after U-turn) the copter must tilt as much as needed and still I need to be able to see where I’m going.<\/p>\n

My suggestions for camera angle are:<\/p>\n