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| I flew my buds with the da50 for every flight its had and it flew great there are no ill effects to flying this with a 50 as far as flight performance is concerned. Plus you can attain a lot more speed out of a 50; thats what I'm going for and i believe that maximizing speed is what Mfuess is going for also. | |
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That would be correct Mr. Flatlandman. My BME-50 weighs 2 ounces LESS than an Evolution 35. I can sling a larger prop at a higher RPM. I like Moki engines especially the 2.10, but I also greatly prefer running gas. As far as the air frame goes, it's built to carry a heavy engine, like an Evolution 35. So those bigger displacement engines are right at home in this bird. A DA-50 was my first choice, but I didn't like the stand-off distance for the DA. Then I considered all other 50's as possible alternatives. Remembering how much I liked BME 50's in my other planes, I took a close look at it. It's a perfect match, even the H 9 engine mount works. I have a DA-50 in my RV-4 and it pylons with the best of them and lands like a trainer. So my thinking is, a Sundowner built for speed will do even better than my RV-4.
I like Saito engines very much and they have their place. But glow powered four strokes really take a beating at consistant and continual higher RPM. Plus everyone that owns one, knows they are glow fuel burning hogs. I have no doubt that the Sundowner flies well with a Saito 1.80.
I would be surprized if it didn't. But the bushinged rod and bushinged cam will be history before too long at these higher speeds. Not to mention the mess that glow fuel makes.