Horsepower figures are not reliable one bit on motors. There are too many variables for it to be accurate from one engine to another, ie, what prop, temp, pa, humidity, how much time on the engine, what exhaust, etc. You have to see them run side by side to understand. RPMs do not tell the whole story in the air. Many O times a motor does not turn up high on the ground, but comes alive like night and day in the air.

mine is the 106 that bobby sells, I dont work for 3W in any fashion, but I can tell you its impressive. Stats dont mean anything to me, once you see one run side by side with the other motors, you can easily tell the difference. I am impressed with the low range torque and transition. Its awesome! I love mine and its as reliable as a singer sewing machine. Mine only has 4 gallons through it, and has no trouble swinging that big fat butter knife looking 3W 28x10 prop. I havent tached it yet with the 28x10 3W prop, but right before I switched to amsoil, I was running lawnboy 40:1, menz 27x10S and was getting 6700rpm on the ground. I like DA, like I said, a very nice motor, I would run one if it was given to me. I have had old 3W100s, a 100 SS TOC, and the 106, and it IS night and day between the old 100s and the 106. The 106 is revamped, lighter (same as DA), no carb block issues. The 106 takes the H9 Sukhoi to the moon like an ICBM. But IMO, you cant go wrong with any of the 3, all will be ample power, and then some, and then some.