Surprised nobody mentioned it, but there is no such thing as a J3C-85! There are J3C-65s that have C85 engines installed.
There was a question about the O-200 STC from Univair. Keep in mind that that STC is only eligible an airplanes with metal spars and a specific fuel tank in the wing. It doesn’t work for wood spar wings! It has also been said that the prop specified in the STC makes for a bad combination of prop, engine, and airframe.
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There was a question about the O-200 STC from Univair. Keep in mind that that STC is only eligible an airplanes with metal spars and a specific fuel tank in the wing. It doesn’t work for wood spar wings! It has also been said that the prop specified in the STC makes for a bad combination of prop, engine, and airframe.
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