Brisk winds. Brought out the Stik with its RCGF-USA 10cc, and the Pulse XT60 with its RCGF-USA 26cc. Both worked fine last week. Neither worked fine today. It took some tuning the 10cc, but that wicked un-commanded aileron movement occurred and was pretty constant at high RPM. I just read a story about a plane crash where the prop was out of balance and generated a vibration freq that caused this to happen. Hmm.... will be checking the balance of the props.
I even had my son Luke with me to video... but alas, nothing flying today. The Pulse was not running right since getting her muffler tightened, and part of it was the fuel lines kinking. I knew this might be a problem at some point and it was today. And to boot, the screw that secures the spinner stripped. Grounded.
Got her home, fixed the fuel system redoing all the lines and making it a 3 tube system so that the engine gets its fuel directly. A new spinner screw was all it took to solve that problem. This all took about an hour or so. I was not in the mood for further foolishness so called it a day. Tomorrow will be too windy to fly, so I will once again tune the engine and get the cowl back on.
Same as yesterday, another waste of time.
UPDATE (5/28/2020): I took the plane out to the backyard bench and ran it up. Took about an hour to find decent settings. Still 4-cycles a bit at WOT, but now it has great RPM and Idle. I'll put the cowl back on, and next time I go out taker her with me to be disappointed again. There has to be something I have lost in tuning my engines for this to keep happening.
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