DSK wrote:
Shortwave Sportfishing wrote:
Never shut the E-TEC 200 HO off the entire time we were out - four
hours of constant running - idle (600 rpm), trolling (600 rpm), cruise
speed (35 mph @ 4100 rpm) and about six/seven minutes of WOT (54 mph @
5400 rpm). Four house of run time.

Refilled on the way home - same deal - right to the tippy top.


That's a bad idea.

Ok, here we go.

4.883 gallons of gas.

That works out to 1.22075 gph.

I don't believe it either, but them's the facts as they say.

And if anybody calls me a liar, I have a witness who is willing to
"testify" as it were. :)

Air lock and/or heat expansion. If you refeuled the first
time in the morning, the stuff was nice & cool. How big is
your tank? After being in the boat in the sun for hours, the
fuel can expand several gallons worth in a relatively small
tank.

DSK

The rate of thermal expansion for gasoline won't anywhere near equal
several gallons in smallish tank even at extreme temperature
differentials.
From scienceclarified.com:

To calculate change in volume, the formula is very much the same as for
change in length; only a few particulars are different. In the formula
dV = bVOdT, the last term, again, means change in temperature, while
dV means change in volume and VO is the original volume. The letter b
refers to the coefficient of volume expansion. The latter is expressed
in terms of 10-4/°C, or 0.0001 per °C