Re: Europa-List: sight gauge alternative

[Jan de Jong <jandejong@casema.nl>]

Curious about Peter's density difference of mogas and avgas I found:

From
http://www.engineeringtoolbox.com/api-gravity-d_1212.html
I get: s.g. = 141.5 / (API + 131.5)

From
http://armyquartermaster.tpub.com/qm5203/qm52030011.htm
I get:
avgas API 60 - 76, s.g.: 0.682 - 0.739
mogas API 54 - 63, s.g.: 0.728 - 0.763

maximum + / - differences: + 11.8 %, -1.5 %
on average mogas is about 5 % heavier but there is overlap

Ranges may be tighter in current practice, would require more study.