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"Fuels with an ethanol content of up to 10 percent may be used in your motorcycle without affecting vehicle performance. U.S. EPA regulations currently indicate that fuels with 15 percent ethanol (E-15) are restricted from use in motorcycles at the time of this publication."
Unfortunately, this is simply not true. Since ethanol produces only 50% of the energy of gasoline (for equal volume), 10% ethanol gasoline only contains 95% of the energy of 100% gasoline. Therefore, power AND mileage can only be 95% of that of straight gasoline (again, for equal volume consumed). Of course, the power equation can be solved by introducing more fuel, but then the mileage is affected even further. I realize that fuel injection will compensate for this to some extent, but it will never compensate for the loss in mileage.
Alcohol is corrosive to metal, it has less BTU's and costs more to produce. However with improved metallurgy, seals, and lubricants the E10 mix has been neutralized as detrimental to modern engines.
The less power output has also been shown that with the increased evaporation results in a cooler incoming charge. that negates the less BTU's and is a wash.
The use of alcohol in racing venues is a political concession to placate the government.
Once the mix goes to E15 and above the life of the engine is reduced from increased wear.
Even Al Gore has stated that Ethanol was a mistake. The cost of planting, cultivating, pesticides used, fertilizer, transportation and processing uses more energy and creates more pollution than the reduction of pollutants gained from using ethanol mix. It has led to the increase in cereal, meat and other food cost across the world. Notwithstanding the huge cost to every taxpayer.
It is subsidized from beginning to end by the government. The alternative energy lobby is the largest source of political campaign contributions that any other source. We get the best legislation that money can buy.
The use of alcohol in racing venues is a political concession to placate the government.
Alcohol has been used to enhance power for about as long as there's been motor racing. Yes, the switch to use of more ethanol, rather than methanol, has partly been political. But it's also partly because 85% alcohol is now widely available at an ordinary gas station, can be set up to produce a lot more power than race gas, and is quite a bit less expensive than race gas (even when the higher volume required is taken into account).
I am by no means a fuel scientist. I do not ever remember having gummy carburetors in my lawn mowers in the 70s when I mowed grass for summer spending money. As an adult I did own my own small engine repair business for 3 years. The bulk 97% of my business was in fact a result of people storing their lawn mowers for the winter with gasoline (10% ethanol) in the tank. An hour removing, degumming and rebuilding the carb. Followed by thoroughly flushing and cleaning the tank and replacing the fuel lines would get them running better than new.
One more thing I have to say about ethanol gasoline is if you were to stop ALL federal subsidies for the production of this corn based product the 10% ethanol gasoline would cost QUITE a bit more than the pure gasoline.
For me I will continue to run the 10% blend in my bike during the riding season. The last 2 or 3 tanks in September I will spend the money for Ethanol free fuel so that she gets stored with 0 ethanol in her fuel system. I also take the time to let all the fuel run out of the carb with fuel valve shut. I do the same process with all my small engines for winter storage. Then again I have been known to run 87 octane in my bike when money is tight. I really can't tell any difference in the way she runs from 87 to 93 Ethanol or Non-ethanol. Then again I don't race or ride my bike hard it is purely for enjoyment which very rarely requires speeds above 70mph or engine RPMs over 4500.
Alcohol has been used to enhance power for about as long as there's been motor racing. Yes, the switch to use of more ethanol, rather than methanol, has partly been political. But it's also partly because 85% alcohol is now widely available at an ordinary gas station, can be set up to produce a lot more power than race gas, and is quite a bit less expensive than race gas (even when the higher volume required is taken into account).
Fun Fact about race cars. They only use the minimum amount of fuel needed to finish the pass. This is done for weight savings. This also means that the fuel does not sit in the fuel system for a month or two which is when the ethanol starts to corrode and degrade fuel system components.
I am by no means a fuel scientist. I do not ever remember having gummy carburetors in my lawn mowers in the 70s when I mowed grass for summer spending money. As an adult I did own my own small engine repair business for 3 years. The bulk 97% of my business was in fact a result of people storing their lawn mowers for the winter with gasoline (10% ethanol) in the tank. An hour removing, degumming and rebuilding the carb. Followed by thoroughly flushing and cleaning the tank and replacing the fuel lines would get them running better than new.
We were cleaning gum out of carbs and replacing fuel lines long before E-10 ever came on the scene. It's the gasoline itself which dries and polymerizes into gum and varnish. When alcohol dries, it leaves virtually no residue. Funny thing.... E85 happens to be an excellent solvent for cleaning these gum and "varnish" deposits.
Originally Posted by 1999 Wide Glide
Fun Fact about race cars. They only use the minimum amount of fuel needed to finish the pass.
Horse puckey. A few do, most don't.
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Last edited by Warp Factor; May 22, 2016 at 06:09 AM.
Resurrecting an old thread here but between personal anecdotes and corn subsidy conspiracies (which I believe) no one really answered the question. Can you run non-oxygenated fuel in a modern fuel injected Harley? I filled up on a lower octane non-oxy tonight and had difficulty holding idle a maybe ten miles later. I'm hoping the fuel is the culprit, considering this new bike has under 3K miles on it and was tuned with 93 octane.
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