MAPPER

The YS 110 and UCD 60 is a wonderfull combo! Hovers at less than 1/2 throttle, up, up and away anytime you want!!!!!!!!!!!! Nice thing about the YS is the pump. Things just keep up at the same pace until you run out of fuel. Have a YS 63 in the 40 UCD replaceing a OS 46. Put the tank in the canopy so I can fly by or hover and torque roll and see my fuel. Neat, engines don't care where you put the tanks. Try one, you will be impressed with the reliability and power, trouble free if you follow directions and leave them alone except for occasional once a year valve check that takes about 5 minutes once you get the hang of things. Most of the guys that grype about the YS 4 stroke difficulties are typically the tinkers who spend half the tank of fuel playing the the needle valve EACH FLIGHT. Same guys that burn up the 2 strokes, can't get them to idle, and blame it on the engine. We have about 3 in our club. I get the engines they can't get to run right, seldom have a problem with them myself after sortilng out and breaking in correctly. Break them in correctly, set a tad rich and leave the things alone unless you notice no smoke trail or engine starts to run a little differently. Time to check out bolt tightness etc. a little preventive manitance. ENJOY