I have been trying to run this particular motor to pieces but it just keep on running. I do fly my 40% and 35% often but these 50cc have been my mainstay. They fit in the truck next to the big ones nicely. With the cost of these DL 50's i can have three planes out fitted for the cost of one composite 35%'er. Maybe I should sell the 3.3m Yak, 2.5m Edge 540, 3.1m Extra and take the money and build a bunch of 50cc planes.