The biggest issue is the reduction in power. You can regain the power by
rejetting the carb or injectors and assuring sufficient intake airflow, but
then the fuel flow is much higher.....and your range is poor.

The fuel system might need modification to insure all components are
compatible with ethanol. One example is: the O-rings in your fuel tank
selector might not tolerate ethanol, swelling and making the fuel selector
tight or even locked in one position.

Regards,
John Severyn
@KLVK


"Jay Honeck" wrote in message
ups.com...
The adding of ethanol to gasoline has made the auto-gas STC unusable
for many aircraft owners, nationwide. So far, we're okay (in Iowa,
which is pretty funny) and are able to purchase untainted mogas -- but
the long-range situation seems untenable. We, as a nation, are
inexorably being forced toward the addition of alcohol into ALL
gasoline, so it seems...

On the Cherokee 235 user's group, there is a guy who's been
successfully using ethanol-gas in his aircraft. It's ruined his
fiberglass tip tanks, but he apparently expected this to happen.
Otherwise, the engine is running fine, or so he reports. (Personally,
I think he's crazy, ruining tip tanks that run close to $4K *apiece*,
but that's just me...)

His experience has led to a more interesting (to me) discussion about
the possibility of REMOVING ethanol from gasoline. Several ideas have
been postulated (evaporation; heating; adding water), but none of them
sound particularly safe or easy.

Any chemists out there? Anyone know a way to remove the ethanol from
mogas, so that we may safely use it in our aircraft?
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"