sonex1566 wrote:Good evening everyone,
Last Tuesday was MY special day, I have watched so many of you other 'first timers', tried to soak up as much info as possible, over thought the process to the point that I consciously had to begin another session of thinking about over thinking the thinking process......
Well it flew like it says in the brochure, like an absolute peach. It was hands off straight and level. To say that I am pleased is a massive understatement. Of course, I have a 'but'. Which was that I really should have leaned the motor a little more, it was running very rich the longer I flew, I fiddled with the mixture for a few moments but I am afraid Captain Cautious here chickened out and landed where I can do some more tweaking in a bit more safety. The ink on the tail dragger endorsement on my license hasn't properly dried yet, but the landing was a piece of cake. I really hope that I haven't put Lady Luck on my tail now because of that!
What I do want to know, is that I now have conclusive proof that I am a much better aircraft builder than you tube video maker......what program is the easiest for a dinosaur like me to figure out how to use and use on a Windows computer? I have watched my fair share of youtube content, it is far easier to criticize someone else's crap effort but entirely different when I've got to do it myself! Any suggestions?
gammaxy wrote:Great Job!
Almost everyone has to make some adjustment to the Aeroinjector (I assume that's what you're using?) after their first flights.
After my first flight, I misdiagnosed my engine as being too rich and made several adjustments lean. Each flight got progressively worse before starting over and realizing my error. The decreasing fuel pressure as you burn off fuel and the higher RPMs in flight both act to make the mixture at a fixed setting leaner in flight than on the ground. I'm not sure how it would get richer during flight unless you were climbing high or maybe a small effect due to the fuel atomizing better as everything heats up. Without actually pulling the mixture out and seeing the RPMs increase, it's hard to know for sure.
My point is, unless you're certain you're too rich, don't be like me and keep adjusting the mixture leaner. Full rich when tuning on the ground at ~2800-3000rpm has to be a little richer than needed if it's going to deliver enough fuel when you're at 3400rpm in flight. Also, when you adjust the needle, remove the air filter and use a sharpie to draw a mark on the needle so you can physically verify how far you adjust it--it tends to turn a little extra when you tighten the set screw back down.
Also, there's other issues like vapor in the fuel that could potentially be misdiagnosed as mixture issues.
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