I use 8x4 with my Enya 09 in a RC model and it works better than 7x5 and 7x6. Most people I talk to about the 09 also says the 8x4 works best. But we all know it depends on model and climate. So try different props.
Depends on model of Enya, but yes, the .09-III and later were really good torque engines. Haven't tried an 8x4 prop on mine yet, but on an RC trainer (Hobby Shack foam 40" Cessna 180) for .049, mounted a .09-III TV (1965 model). on 15% nitro with 7x3 prop, it moved out very .049 like. When I put a wood 7x6 prop, then it moved out with authority, became a really nice sport plane. If I had an 8x4 to try, wouldn't surprise me that it would haul good, too.
Peter Chinn in his engine article mentioned that there was no point in trying props smaller than 7x4, because in flight RPM took it beyond the HP curve. He said that it was second powerful to the Cox .09 Tee Dee.
http://sceptreflight.com/Model%20Engine%20Tests/Enya%2009-III%20CL%20&%2009-III%20RC.htmlI was further amazed, based on Peter's other reviews on the Fox .15X, that the HP curve is stronger on the Enya. I guess where where people get an impression these cannot perform, is that they utilize too small of props, as though they were Schneurles. HP is developed at a lower RPM.
An interesting find for me was, my Enya .09-III likes lower inertia wood props, is harder to hand start and needle with heavier plastic props. (Don't have an electric starter.)
The earlier Enya .09's including twin stack were less powerful.
Topic: Enya 09 (Read 1059 times)
