Equipment: Frame: Feiyu Tech X4 FC Board: KK v3.0 flashed with 4.7 xxcopter firmware Camera: MD80 (onboard), Samsung Note and Canon 550D (Onground) Motors: 2208 950kv Propellers: Hobbyking 10x4.5 ESC’s: Hobbywing Eagle 20A Rx/Tx: Turnigy 9x flashed with Er9x firmware Weight: 873gms (with 2200mah 25C Battery) First thoughts after Maiden Outdoor flight: I had previously been testing my orientation and flying skills on my roof with the Multiwii Microwii board but after crashing it and landing it on someone else’s roof, I fell back to the kk v3 board (the board still works, had a couple of bent pins but otherwise it works ok). In the crash I also bent a couple of the carbon fiber arms of the frame so now I need more trimming than a regular couple of clicks to maintain a stable flight On my first outdoor flight I quickly realized that any aggressive movement on the roll or pitch would be followed by the quad losing altitude. On the other hand, any rudder movement would make the quad to gain elevation. With no fpv and keeping the quad in sight, it was difficult to maintain enough height which would not make the quad come to the ground after a relatively aggressive roll/pitch stick movement. Also I somehow require way too much yaw trim as well. This means that two of my motors are always working much harder than the others. I was also able to verify this by checking the temerpature of the motors after the flight. The front and back motors (CW) recorded an average of 108 deg F and the other 2 CCW recorded 122 deg F. Overall, I am happy with the quad. The frame has been quite good and has withstood a nasty fall. The transmitter/receivers are gems (bought them at below par value from olx) and more so after flashing the er9x. I read up that its now as good as any expensive futaba/spectrum. The board left me a little disappointed considering that after flashing the new firmware I would have expected that it would be more stable in maintaining elevation (the famous kk2 board is much better at it even though it too does not have an accelerometer). At the same time, while hovering, the kk v3 is still quite stable. The camera is something I need to work on. I’m not as much disappointed with its quality as I am with the small FOV and how it doesn’t seem to give you much idea about where it is that you are flying. On the subject of camera’s I spent a lot of time tweaking my props and motors for balance and it is not that I’m able to get the jiggle to something that I can work with. Tried working with hobbyking 2 axis fpv gimbal but wasn’t able to create a mount sturdy enough to remove the jiggle from the videos. Next steps: Have ordered a DIY FPV system, Boscam 200mw VTX + VRX, Boscam HD19 Camera (this looks amazing especially with its 60 fps capability). Couldn’t afford the mouth watering Go Pro Hero HD. Meanwhile I still don’t have enough flying time in the field so learning solo on the Pheonix simulator. I think I’m getting much better on the orientation flying a trainer plane first but the roll and yaw on a heli is much different from a plane so will graduate to that once I’m better trained on orientation.
Posted on: Sun, 28 Jul 2013 17:29:36 +0000
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