AV gas prices

Well it has happened. Local 100LL is $5.60/ gal and is not expected to
decrease. Is there anyone out there using Supreme MoGas in a Lycoming 0320
with 8.5:1 compression? If so what ignition timing changes were needed if
any?

thanks
Stu Fields

On Mon, 28 Apr 2008 21:13:16 -0700, "Stuart & Kathryn Fields"
wrote:

Well it has happened. Local 100LL is $5.60/ gal and is not expected to
decrease. Is there anyone out there using Supreme MoGas in a Lycoming 0320
with 8.5:1 compression? If so what ignition timing changes were needed if
any?

thanks
Stu Fields


bloody hell that is $1 47.9 cents per litre.

how the hell do you get it that cheap?

locally it is $aus1.64 per litre. actually with the last rise it is
probably $1.70 plus.

hey stewie its not $1000 per litre. get a life and go flying.

Stealth (still flying) Pilot

On 29 Apr, 14:24, Stealth Pilot
wrote:
On Mon, 28 Apr 2008 21:13:16 -0700, "Stuart & Kathryn Fields"

wrote:
Well it has happened. *Local 100LL is $5.60/ gal and is not expected to
decrease. *Is there anyone out there using Supreme MoGas in a Lycoming 0320
with 8.5:1 compression? *If so what ignition timing changes were needed if
any?

thanks
Stu Fields

bloody hell that is $1 47.9 cents per litre.

how the hell do you get it that cheap?

locally it is $aus1.64 per litre. actually with the last rise it is
probably $1.70 plus.

hey stewie its not $1000 per litre. get a life and go flying.

Stealth (still flying) Pilot

Swedish government just passed a bill that will put the price of 100LL
at SEK 18 per litre. That is 3 US$ per litre or about 11 US$/gallon. I
heard that US truck drivers are protesting about gasolin prices in the
range of 3-4 $US/gallon. Get a grip, oil is a limited resource and we
all have to pay (much more) for it to appreciate its real value. And
yes, I am still flying, but for how long...

/Lars

I've got the same engine in my plane, it's an O-320 D2C, but there are
other number series with the same compression ratio in the 160hp
class. That engine is listed on Peterson's mogas STC site as one that
is approved for premium unleaded autofuel. So you shouldn't run into
any problems as far as detonation goes, vapor lock is another issue,
and is different in each aircraft type. Just the other day a pilot at
my local airport said that if the gas has the common 10% ethanol
added, it's vapor lock potential goes up a lot. I'm not sure about
those facts, but I think it has more to do with fuel system design.
Gravity flow systems seem almost immuned to that problem. With wing
tanks below the carb, the best setup is to have fuel pumps at the tank
"pushing" the fuel to the carb. Rather than the more common setup of
the fuel pump in the engine compartment sucking the fuel from the
tank. Peterson's website has a good dissertation about homebuilts
worth reading, in regards to fuel system design to help prevent vapor
lock.

On Mon, 28 Apr 2008 21:13:16 -0700, "Stuart & Kathryn Fields"
wrote:

Well it has happened. Local 100LL is $5.60/ gal and is not expected to
decrease. Is there anyone out there using Supreme MoGas in a Lycoming 0320
with 8.5:1 compression? If so what ignition timing changes were needed if
any?

thanks
Stu Fields

here's what Peterson's site says about homebuilts:

HOMEBUILTS

Homebuilders can improve the fuel system of an airplane under
construction in a number of ways to reduce the likelihood of vapor
lock. NASA vents incorporated into the vent system help provide
positive pressure. Fuel pumps should be installed in the fuel tanks,
or as close to the fuel tank as possible, and should be of the maximum
pressure and flow rating allowable for the carb. Any 90° fittings
should be replaced with 45° fittings, or tubing with very smooth
gradual bends. Fittings should be made as tight as possible to prevent
air from entering the line. Lines should be secured to prevent
vibration & harmonics. Fuel lines in the engine compartment should be
insulated to prevent heat from soaking through to the fuel. Fuel lines
should not be located in close proximity to hot spots in the engine
compartment.

Composite materials used for the construction of some homebuilts may
react negatively when they come in contact with fuel. The early
Vari-eze homebuilts had a tendancy for the spar to come apart after
fuel tank leaks dribbled fuel onto the spar. Homebuilders should
contact the kit manufacturer to see if material used throughout the
airplane is compatible with the type of fuel you will be using and to
receive other recommendations.

Is it true that the Peterson STC prohibits any alcohol in the autogas?

"Sliker" wrote in message
...
I've got the same engine in my plane, it's an O-320 D2C, but there are
other number series with the same compression ratio in the 160hp
class. That engine is listed on Peterson's mogas STC site as one that
is approved for premium unleaded autofuel. So you shouldn't run into
any problems as far as detonation goes, vapor lock is another issue,
and is different in each aircraft type. Just the other day a pilot at
my local airport said that if the gas has the common 10% ethanol
added, it's vapor lock potential goes up a lot. I'm not sure about
those facts, but I think it has more to do with fuel system design.
Gravity flow systems seem almost immuned to that problem. With wing
tanks below the carb, the best setup is to have fuel pumps at the tank
"pushing" the fuel to the carb. Rather than the more common setup of
the fuel pump in the engine compartment sucking the fuel from the
tank. Peterson's website has a good dissertation about homebuilts
worth reading, in regards to fuel system design to help prevent vapor
lock.

On Mon, 28 Apr 2008 21:13:16 -0700, "Stuart & Kathryn Fields"
wrote:

Well it has happened. Local 100LL is $5.60/ gal and is not expected to
decrease. Is there anyone out there using Supreme MoGas in a Lycoming
0320
with 8.5:1 compression? If so what ignition timing changes were needed if
any?

thanks
Stu Fields

"Stealth Pilot" wrote in message
...
On Mon, 28 Apr 2008 21:13:16 -0700, "Stuart & Kathryn Fields"
wrote:

Well it has happened. Local 100LL is $5.60/ gal and is not expected to
decrease. Is there anyone out there using Supreme MoGas in a Lycoming
0320
with 8.5:1 compression? If so what ignition timing changes were needed if
any?

thanks
Stu Fields


bloody hell that is $1 47.9 cents per litre.

how the hell do you get it that cheap?

locally it is $aus1.64 per litre. actually with the last rise it is
probably $1.70 plus.

hey stewie its not $1000 per litre. get a life and go flying.

Stealth (still flying) Pilot

Hell Stealth, the problem is that I still remember getting a T-34 for $12/hr
wet in an age where the restrictions were much less. Now it costs more and
the flying is getting to be a contest of obeying the regulations. There is
obviously going to be a time when the cost outweighs the enjoyment and I
have a whole raft of interests that have been put on the back burner while I
dabble in aviation. My dabbling started in 1954. Maybe it is dying of
natural causes.

Stu

Yes, but why in the hell did you have to quote the entire previous message
to ask a one-line question?

Jim

--
"If you think you can, or think you can't, you're right."
--Henry Ford


"Bill Daniels" bildan@comcast-dot-net wrote in message
...

Is it true that the Peterson STC prohibits any alcohol in the autogas?

On Tue, 29 Apr 2008 06:25:52 -0700, Lars wrote:

tealth (still flying) Pilot

Swedish government just passed a bill that will put the price of 100LL
at SEK 18 per litre. That is 3 US$ per litre or about 11 US$/gallon. I
heard that US truck drivers are protesting about gasolin prices in the
range of 3-4 $US/gallon. Get a grip, oil is a limited resource and we
all have to pay (much more) for it to appreciate its real value. And
yes, I am still flying, but for how long...

/Lars

The problem Lars is the price is artificially inflated to a big degree.
As proof, in the US companies must annually report their profits. Last
year Exxon reported a profit of $4Billion US. Which is the largest profit
of ANY company of ANY product anywhere in the world, including all these
Cartel countries. The problem is one of gouging on the part of certain
companies.
John

Jumpin Jahosaphat wrote:
On Tue, 29 Apr 2008 06:25:52 -0700, Lars wrote:

tealth (still flying) Pilot
Swedish government just passed a bill that will put the price of 100LL
at SEK 18 per litre. That is 3 US$ per litre or about 11 US$/gallon. I
heard that US truck drivers are protesting about gasolin prices in the
range of 3-4 $US/gallon. Get a grip, oil is a limited resource and we
all have to pay (much more) for it to appreciate its real value. And
yes, I am still flying, but for how long...

/Lars

The problem Lars is the price is artificially inflated to a big degree.
As proof, in the US companies must annually report their profits. Last
year Exxon reported a profit of $4Billion US. Which is the largest profit
of ANY company of ANY product anywhere in the world, including all these
Cartel countries. The problem is one of gouging on the part of certain
companies.
John


And in Sweden it is further artificially raised by the government. I'd
just a soon my money go to an oil company rather than a government I can
at least buy stock in an oil company.

That said it is to be expected that if the price of some raw product, in
this case oil, goes up the finished product is going to cost more.

Let's say you sell widgets and on day 1 widg, the raw material of
widgets cost you a $1.00. Your cost to refine widg into widget is $.50.
and you decide you want to make a 50% profit. So you sell your widgets
for $2.25.

Now years later the cost of widg has risen to $3.00 and your cost to
refine has stayed the same (which oil refining hasn't) to $.50. So now a
refined widget costs $3.50 and you wan to make the same 50% on your
money so you have to sell the widget for $5.25.