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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 |
#2
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AV gas prices
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 |
#3
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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 |
#4
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AV gas prices
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 |
#5
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AV gas prices
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. |
#6
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AV gas prices
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 |
#7
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AV gas prices
"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 $12/hr wet in an age where the restrictions were much less. Now it costs more and the flying is getting to be a contest of obeying the regulations. There is obviously going to be a time when the cost outweighs the enjoyment and I have a whole raft of interests that have been put on the back burner while I dabble in aviation. My dabbling started in 1954. Maybe it is dying of natural causes. Stu |
#8
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AV gas prices
Yes, but why in the hell did you have to quote the entire previous message
to ask a one-line question? Jim -- "If you think you can, or think you can't, you're right." --Henry Ford "Bill Daniels" bildan@comcast-dot-net wrote in message ... Is it true that the Peterson STC prohibits any alcohol in the autogas? |
#9
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AV gas prices
On Tue, 29 Apr 2008 06:25:52 -0700, Lars wrote:
tealth (still flying) Pilot Swedish government just passed a bill that will put the price of 100LL at SEK 18 per litre. That is 3 US$ 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 $4Billion US. Which is the largest profit of ANY company of ANY product anywhere in the world, including all these Cartel countries. The problem is one of gouging on the part of certain companies. John |
#10
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AV gas prices
Jumpin Jahosaphat wrote:
On Tue, 29 Apr 2008 06:25:52 -0700, Lars wrote: tealth (still flying) Pilot Swedish government just passed a bill that will put the price of 100LL at SEK 18 per litre. That is 3 US$ 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. |
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