ORIGINAL: LarryQ
Right now, I'm not sure if my YS 110 is going to be happy with a Master Airscrew 3-blade 14x7 prop.
I can richen it to @9300-9500...but she is really rich.(Tons of smoke and a gurggle break at high rpm)
good for break in...but I don't think she is going to be very happy.
otherwise It seems to overspin that prop to 10,500.
I risk floating a valve at that RPM.
Is it too lean?...well that's my problem..I just can't tell straight away.
What should I look for to make sure she is happy, and not leaned too far?
This is my first 4-stroke..but I'm a fast learner.
What I've read says to richen it to @ 500 rpm off peak RPM.
It seems that MA 14x7 3-blade is too small for the YS 110. You might want to try Graupner 14x7 3-blade, which has wider blades and thus puts more load on the engine.
The YS 110 is happiest between 9300 and 9500 rpm. This is where the engine develops the most power. I usually richen mine 300-400 rpm off peak.