Probably the same reason most auto oriented stay away. Availability. I
agree with everything you said. Fuel consumption increases slightly to
compensate for power density. Some of the fastest cars on the planet run it and
i would set up for it too. If i could RELIABLY find it.My 2C
Bill Jacobs
------ Original message------From: andrew via KRnet Date: Sun, Jun 5, 2016
11:06 PMTo: krnet at list.krnet.org;Cc: andrew;Subject:KR> EthanolHere goes the
spoon feed ?Don?t use it?. As I?m working on blue prints for the KRSuper1, and
getting my outside research done. I am settled on one huge taboo of the
aviation community. This bad boy is going to be tuned and built to run
primarily on ethanol.?But Cessna and the big aviation companies says it?s
horrible.? Hold on and let me get some hand on acknowledge your way.Dr. Maxwell
Schauck has been flying on ethanol since the 1980?s, and flew across the
Atlantic in his Velocity back in 1989. While I was attending his program at
Baylor University I got to participate in his research for 4 years. In that
four years I came to find out a few things.1. Ethanol is a superior fuel to
100LL.2. Oil companies will do everything to keep it out of mainstream use3.
Ethanol has a natural octane of 1134. Ethanol burns cooler, and will run smooth
at 50 degrees past peak EGT5. If you add water, you get a horsepower boost, AND
you don?t have to worry about it damaging your engine6. Ethanol reduces engine
vibrations by 50%.7. Ethanol doesn?t react with oil in the same manor as 100ll
or mogas8. Ethanol will eat aluminum and natural rubber. Easily combated by
anodizing and using Teflon9. If an engine is tuned to ethanol vs. 100LL, you
get a significant horsepower boost with minimal GPH increase.This is all based
on my personal experience working on our departments Pitts S2B, Cessna 152,
Cessna 172, Velocity, Piper Aztec, and Max Performance Research aircraft
prototype. We averaged a horsepower increase of roughly 30-35% increase with
ethanol vs. avgas, with no changes to the mechanical tuning on the engine. To
the point we had to order custom props for all our aircraft, due to engine
overspeed with the standard propellers. (The Pitts S2B ran 300HP on 100LL and
350HP on ethanol).We also did water in fuel testing for the FAA while getting
our Cessna?s STCs updated (yes, Dr. Schauck owns the STCs for 152s and 172s to
be flown on 100% ethanol in utility category). We were able to add 10% water to
the fuel tanks before reaching peak EGTs. Had we tuned the engine this
percentage would have gone up.So why am I sharing; I plan on building the first
KR that is designed to fly on ethanol. And foreseeing the usual arguments I
figured I would head off most prior to having to repeat. So a Corvair with
100HP should obtain 130HP simply by tuning to run on the 113 Octane ethanol.
But we shall see when we get to that part of my build.What are your thoughts on
the matter?Sent from Mail for Windows
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