"Dan Luke" wrote in message
...

"RST Engineering" wrote:

(a) You can go through the math all day long and still not explain why I
have drained the (hangared) 182 after a particularly humid day or two and
get a tablespoon or two of water in the quick drains.

I see: math is false and your charming story is proof. Very convincing. I
have one too: I've been keeping a 172RG with 62-gal. capacity tanks
outdoors in one of the most humid places in the U. S. for six years. I
never top the tanks unless I specifically need to for the next flight.
Only once in that time have I ever had water in a sample, and that was due
to a bad fuel cap gasket.

So, you've got your little story and I've got mine--so what? I'm the one
with the real numbers on his side.

No Dan, you do not have the numbers on your side. You totally forgot that
the air is not captive inside the fuel tanks. It is free to enter and exit
as the barometric pressure and local wind causes differences in pressure at
the fuel vents. So you may have part of the numbers on your side, you did
not correctly model the problem, and therefore your conclusions are probably
incorrect. Go back and do the problem correctly.

John Severyn
@KLVK