RE: Engines with two rings???
I simply brought it up as a point of contention.
Echo makes pretty darn good stuff, and somebody there thought that 3 rings were the "Hot Ticket".
I was surprised to see 3 rings and the point about 3 Bowman rings was supposed to be absurd.
Fact:
One good Bowman ring is all anyone would need.
The proper amount of oil in the gas will increase compression with out loss of any horsepower.
“I found this out running chainsaws with 100 to 1 oil. 75 to 1 developed more power and ran stronger."
We will never run a RC gas engine enough to see the longevity on a 2 ring engine.
Not many people fly at full throttle, so a few hundred RPM means almost nothing.
The right size engine on the right plane and you will have power to spare.
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Pick the plane you want to fly. Find out how much nose weight others have used to balance their plane.
Pick an engine that weighs enough so you don't have to add weight and make sure it turns the correct size prop for your plane.
Hint: Planes that had radial engines need lots of nose weight.
I love gas planes. They are the most forgiving and most fun to fly and easiest to maintain.
And if you are diligent enough to build your own, it it's even better.