Just got back from the Field. It was a bit windy -- perfect for flopping waterfalls into the wind. I was coming down to the bottom of a waterfall ...(It was about my 10th consecutive full power for 5 seconds power off for about 5 seconds). thinking one more flip and I will fly out when she(YS110) quit as I went from idle to full throttle. I did not have enough room to get the speed up as high as I would have liked for my landing and pancaked it out cracking the bottom side of the cowl and bending the stock tail gear.

I walked up the the plane & the first thing I checked was my throttle servo--when I went to full I notice a lot of fuel running down the muffler. The fuel just kept on coming as if the system was releasing pressure - - like there was a leak in the system. When I went to grab my spinner to feel the motor it came off in my hand & then noticed that my prop (16 x 6 top flight super M-wood) had come lose. I pulled the plane back to the pits and pulled my vent line expecting that the system was already depressurized, but to my surprise it was not. I pulled the cowl to investigate and found nothing out of order so I mounted the prop and spinner to feel the motor and all seemed good. I ran it with the cowl off thinking I may have to richen up the regulator, but the motor ran so good again I did not see any reason to start messing with the needles.

Not sure what happened as this motor has never quit on me before(3 gallons of fuel) -- it appears that It must have went lean on the transition, but why? I may richen the transition up a bit as today it was spinning up to 10,200 and slowly pulling back to 9500 as it moved on to the high speed. Also, it is a mystery to me why so much fuel came running out when I opened the throttle after landing? As if I was too rich not lean?

Please if you have any insight for me?