I have a K&B Sportster .45 engine for an airplane. It was originally made to fly foam airplanes for target practice in the military for tanks. My buddy picked it up when he was training with it. It has a seal for 1991. I have no experience with RC except for electric helis and have had one 1/8th nitro buggy from Germany but I can't start it. I have burned out every starter box I have tried. What I am asking here is I can use the engine from the airplane and convert it into an inboard rc boat engine
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Turn Aero Engine into Inboard boat engine
- Thread starter landnyk
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No. Inboard engines require a water cooled head.
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No the muffler has nothing to do with the cooling. The cooling head on a marine engine has water running though it for cooling. An airplane engine has a very small cooling head since it gets a lot air from the prop and ram air from flight cooling it. If you made it an inboard it would have NO airflow or cooling what so ever so it would over heat and cook quite quickly I would guess. But to answer your question....yes if it has zero airflow it has to be cooled by water.
***EDIT*** Now I do use a airplane engine on my Dumas Big Swamp but it is an outboard engine with a prop for cooling. So I would say you are looking at a cooked engine. Another bit of info for you. An aircraft engine turns at just over half the RPM of a boat engine. You would have a lot of torque but no speed. It would be hard to compensate that much with a different prop.
***EDIT*** Now I do use a airplane engine on my Dumas Big Swamp but it is an outboard engine with a prop for cooling. So I would say you are looking at a cooked engine. Another bit of info for you. An aircraft engine turns at just over half the RPM of a boat engine. You would have a lot of torque but no speed. It would be hard to compensate that much with a different prop.
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It would only be good for a swamp boat (air boat) since it would sit outside with an airplane propeller. For any other kind of boat you're strictly into marine engines.