It's is like the guy who spent $25,000 on tools to build
furniture for his house, to save 25% on the furniture.
During WWII the Army published flight manuals for fighters
(and bombers) for different grades of fuel, 80/87, 91-96,
100/130 and 115/145 being refined. But some battlefields
did not have supplies of all grades. So you might have a 54
In Hg. MAP with 115/145 and only 40 inches with 100/130.

But what octane do you get from home refined mogas?



--
James H. Macklin
ATP,CFI,A&P

"Al" wrote in message
...
|
| "Jim Macklin" wrote
in message
| news:q0oCg.14$SZ3.7@dukeread04...
| ECON 101
|
| AvGas is available at X price
| MoGas is available at 3/4X price
| Cost to re-refine MoGas Y (why is a good choice of
letter)
| Cost to repair damaged engine (each) $20,000.
|
| Cost to repair damaged fuel tanks, plumbing, pumps and
| seals, unknown.
|
| Cost of FAA violation of regulations, certificate
| suspension, a lot
| Cost of uninsured aircraft when your insurance is
cancelled,
| priceless.
|
| --
| James H. Macklin
| ATP,CFI,A&P
|
| 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
|
|