Thread: Help! O.K Cub 074
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Old Jul 28, 2012, 08:30 AM
earlwb is offline
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You have to hand launch carefully so as to not cause too much of a leaning out. If you launch aggressviely the Gee forces overcome the fuel draw and the engine dies. I have had to take off running and launch less aggressively almost gently to get some 1/2a planes to fly without killing the engine. Sometimes it becomes something of a art it seems to hand launch a 1/2a engine powered plane.

The other thought is the fuel tank and its distance from the engine along with how large the fuel lines are going to the engine. The 1/2a engines are very sensitive to how long the fuel has to be drawn through the tubing.

when these engines were being used many years ago, it was free flight and control line for the most part. So they didn't have to deal with hand launching like one would do with RC planes. They could ROG the CL planes and for FF they eased them off into the air more gently.

Tell us more about your plane? Any pics? we could offer better advice if we knew what you had the engine in.
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