".Blueskies." wrote in message
m...

"Al" wrote in message
...
:
:
: There is also the issue of performance. As I understand it, alcohol
: doesn't produce as much horsepower per volume as does avgas. If I use a
: mogas that has alcohol in it, I don't have the "Get up and GO" that I
used
: to have. On that hot day at high altitude, over an obstacle, which
takeoff
: performance chart do I use?
:
: Al G
:
:

It is a power to weight issue. If you are pulling 28" at holding 2650 RPM,
alcohol or gas it is the same power. You just
need to move more alcohol through the engine to do it. This is the primary
reason there are special cars that can run
the e85 stuff - they have bigger carb jets so they can maintain the
correct egr.

I suppose there would be issues on low pressure altitude days where and
airplane engine may be starving for fuel (to
lean) if it is fed alcohol...

So, I just run it richer? Or, in the case of a departure, where the
mixture is already full rich, you're saying there will be NO loss of
performance by using a mixture of autogas and alcohol?

Al G