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differance in engines

Old 01-31-2015, 12:28 PM
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Default differance in engines

If I have a glow engine that. Is 1.20 rated at 3.7 hp and 30cc gas engine rated at 3,7 hp what is the difference in the two engines and they weight the same
Old 01-31-2015, 01:41 PM
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10 cubic centimeters

The glow engine will be physically smaller.
Old 02-01-2015, 08:40 AM
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I think the real question is will a 1.20 glow fly the same planes as a 30 cc glass engine? Any opinions?

Old 02-01-2015, 01:45 PM
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HP ratings are something you shouldn't go by, they can be manipulated just by changing the prop size and we never know what prop was being used to get the specs. A 1.20 is just a 20cc engine and a lot depends on the type, two stroke or 4 stroke. I have a big over weight Bipe I originally used an OS 1.20fs engine in and during tests using different engines the DLE 30 didn't pull it any better or worse then the glow engine. At the moment I'm setting the plane back up for flight but this time using a YS 1.20.
That's just this plane and a different plane will give you different results.

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