ORIGINAL: The_Pipefather
ORIGINAL: britbrat
Uh --- Pipefather -- VE means Volumetric Efficiency. Don't you just hate when that happens -- you know -- suddenly the other guy's argument actually means something? [
]
No it still doesnt mean anything. If VE is indeed volumetric efficiency, you dont get volumetric efficiency increases with an open exhaust as opposed to an untuned silencer, which is exactly what I said at the end of my previous post.
Kweasel, I have noticed that stock aircraft glow engines (atleast the couple I have had the chance to measure) have somewhat mild timing, on the exhaust side, compared with bigger engines. This may have something to do with the fact that actual port timing is less important than port time-area. Do notice that most glow engines have bridged exhaust ports which can be made very wide relative to the bore. So a milder timing can be used to make the engine more docile as far as idle and part-throttle efficiency is concerned, while still enabling a high gas throughput at higher rpms.
Go back and actually read what Dar said. Use all of the words.