Ethanol 2-stroke engines

Alcohol is an inexpensive, clean and renewable fuel source.

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rectifier
Swill Maker
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Joined: Sat Apr 30, 2005 4:50 pm
Location: BC, Canada

Ethanol 2-stroke engines

Post by rectifier »

I recently bought a 50cc 2-stroke scoot (1990 Yamaha Jog) to mess about with in the city... this thing sips gas, so of course I am interested in running 80-95% ethanol/water as it would be easily possible to make up the several litres/week it takes to run around town. And with the recent oil pipeline news, I'm thinking of it even more.
If I can run on ethanol, screw the gas companies, I'll ride only my scooter.

Has anyone ever heard of running ethanol in a 2-stroke? I'm wondering mainly, of course, about any interactions with the oil which might result in inadequate lubrication, but any information would be great. My scoot is oil injected, if that makes any difference.
1shot1kill
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Post by 1shot1kill »

Check out radio control aircraft/cars/boats, they run on a methanol mix and there are both natural (castor) and synthetic oils that can be used.

About the only problem that I can see you having tho' is with the ethanol chewing through seals and such.
"Why, they couldn't hit an elephant at this dist..."

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AllanD
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Post by AllanD »

The only major issue will be finding a lubricating oil that is compatible
with ethanol...

Some oils, or more specifically their additive packages, are not compatible with alcohol fuels.

Your engine might love the ethanol fuel, but that won't
make you happy if the ethanol has a polymerization reaction
with your lube oil and it turns into something that resembles rubber cement or chocolate pudding rather than oil...

If in doubt ask the oil manufacturer if their product is compatible with alcohol fuels.

AllanD
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