The fuel nipple came in from Horizon Hobby, and a couple I ordered from Graves RC, and I installed it snug with a little red grease. Re-did the fuel lines and the leak is gone. I took her out to the garage having set up the carb needles at stock, Low 4.25 turns, Hi 2.5. She started right up, rich. For the next 2 hrs I was on my knees trying to find an idle that worked long enough to work the Low needle. I got the Low tuned, then the high, retuned the Low. I had to lean it in a bit, and leaned out the Hi a smidge.
How low can you go... my knees are killing me.
From the richer settings. I think she is leaned out a bit, but she throws a lot of oil.
This is pretty much how she is running. This was before I found the sweet spots, but pretty close.
The 450 Helis
I dusted off the EXI 450 FBL. She had issues with a severe oscillation, and I could never quite find the source. I went through the swash, and the tail. Snugged a few things, had to flip the tail blades I had installed upside down. I think there is an ever so slight hint of a wobble in the tail shaft, so I ordered a new one. Maybe that might be enough to cause an oscillation? I snugged up the main shaft collar, and then plugged in the XYZ FBL programmer and checked the settings. I am not sure why, and can't fix it, but I get +10 degrees, but only -6 degrees pitch. I have no idea why. I do see that at 0 pitch the swash arms are NOT level. I can't figure out how to get that level and have zero pitch, physically in the set up or in the software. I need to take a look at the length of the control arms, maybe they are too long? I have some work to do. The FBL software isn't the best, but it's all there is to program the XYZ 3 axis stab system. I need to look into that a bit. I haven't been super impressed by these stabilization systems, and they are pretty old. If I stick with the 450s I may need to look into replacements.
The HK450 Sport is collecting dust. It needs a few servos replaced, some new control arms. I am sure there are some other things wrong, it's been so long since I worked or flew it I have no idea.
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