I've got an Oriental kit and a spare Enya 30ss. I think I read someplace that the oriental was designed for the fox 35. The fox weighs 7oz. and the Enya 30ss weighs in at 6.9oz. I may have found a way to power the Oriental without adding a lot of lead to the back. What are your thoughts on this setup? What prop should I start out with? Should I run it with pressure? I've never mounted these Enyas inverted, any things I should watch for? Thanks, B
I would not use any "pressure" other than muffler pressure, and that only with a Uniflow vented tank. I would go along with the designer and adjust the wing location to suit different engines, rather than add weight to nose or tail. My favorite stunt props for 35 and 40 engines have always been 11 inch medium width bladed (two bladed) props in 5 inch pitch, trimmed to 10 1/2 for a Fox 29 or 35, which is a classic style prop. For a modern 35-40 engine, I keep the same diamerter, usually, and drop the pitch to 4 inches.
I overlooked (well, didn't try looking at) your current station. It probably will be problematic getting an FP, but you should have access to OS LA engines, if the Enya doesn't work for you. The only Oriental that I ever had was a profile bodied one, back in the early 1970's, before I heard that Dee & others built several profile Orientals themselves, before the article & plan was published. Mine had an OS Max-S 35, no muffler, no spinner, film covering on the wing, and HobbyPoxy paint on the fuselage. Very plain, utilitarian, even. It weighed 42 Ounces, and flew practically off the paint rack (not much in the way of trim to do).
It flew very well even when the engine was set too rich (I had some leaking NVA problems and changed to a different non-OS one, maybe a K&B Universal, but it took awhile to dial the setting in after that). If I could fly a pattern (maybe not a great one, given my unfamiliarity with a really slow pattern) with a 35 turning a steady four-cycle everywhere except straight overhead, or close to it, I imagine it would fly well enough on a variety of lesser powered engines (not to say I think that Enya's 30 actually is less strong, but just that I got by flying nicely enough with acceptable line tension (not great, because it was probably the slowest I'd ever flown any pattern), on far less than full power, so I think the design is very flexible about engines.
Topic: Oriental engine (Read 2974 times)