On Mon, 10 May 2004 15:08:09 +0000, Kyler Laird wrote:

Greg Copeland writes:

On a large rotory engine, only 1% methane contamination was
required to cause the engine to quit. Less than 1% was enough
to cause an RPM drop. As it approaches 1%, sputtering occurs and then
finally, the engine quiets.

I'm not sure that I caught everything correctly when that was happening
but I thought someone said that the methane caused an over-rich mixture.
So...what happens if you lean the mixture?

--kyler

I don't know. I'm honestly not sure it was associated with an overly rich
mixture. It may of been I simply missed the boat. Watching TV with a
family sometimes means you miss small portions of the show. If it was
caused by an overly rich mixture, it would of been nice to find out what
happened if they continued to lean it out, so as to present a possible
range. Interesting nonetheless.

I should also correct that it was a radial engine and not a
rotary engine. That was a brain-fart on my part. Sorry.