Stinger II Maiden!

With just a little trepidation about the maiden due to the Stinger II having my first YS engine on it, I went about making the maiden flight today. It was foggy on the way over, but clear at the field, approaching 50F, and sunny. NOBODY was there, so I set to work/play. I had to make sure I concentrated on fueling and defueling due to the pressure that YS engines operate with. Fuel via the intake line on the side of the fuse and release pressure and catch overflow with the vent line on the bottom of the cowl. I started with the high needle opened 2.5 turns. Needed to use the starter to turn the YS over. Had to fool with higher throttle trim to keep her running, then realized I had not set up the kill switch yet, so I had to turn the needle in to starve the engine and stop it several times. Got the kill set up correctly after fooling with end point on the low end, and the % for kill. Also had to turn the transition needle in about 2 turns when the engine would die at just about any throttle speed when I removed the glow clip. The high needle still seemed slightly rich at 1.5 turns open, but I ran that way for the maiden flight, and was rewarded with lots of exhaust on the plane afterwards, haha.

BUT I was gladdened by the enormous power of the YS FZ63S, and the crazy speed of the Stinger II! The plane needed about two clicks right aileron and two down elevator for hands off flight. Inverted flight requires just a little down elevator pressure. Looks like the plane wants to roll out slightly in KE. The plane whistles at high speed with this engine. Only needed one attempt and landed very lightly on the runway center. The Stinger II slows down like a pussycat. I was about to make a second flight when the prop and spinner took off as a unit without the rest of the plane. I bought the YS used and it came with one aluminum prop nut. On the way home from the field, I stopped at Ace and got two new nuts which when used together will hopefully lock the prop on securely. It was a highly successful maiden and I look forward to zinging about the sky with the Stinger II real soon.

I forgot to take my camera today, so I don't have field pics taken on the day of the maiden like I normally do. This one in the sideyard from a couple weeks ago will suffice for now.