||01-05-14 11:00 AM
Originally Posted by Rollfast
Never fear, they have ethanol to wreck the mower and force them to ramp it up on a trailer every 5 weeks when the alcohol ruins the motor. Nobody said exercise is dead there.
Actually motors in and of themselves run much better on alcohol fuel then on comparatively very dirty gasoline regardless of type of alcohol (there are multiple different alcohol fuel chemistry, ethanol is only one of them) cleaner exhaust with less pollutants and cleaner engine that runs at cooler lower temps and actually produces more horsepower. The problem is in the fuel delivery system the materials that certain components in that area (mainly hoses, seals, and gaskets) are made of materials designed to be gasoline tolerant not alcohol tolerant both of which do nasty things to those kind of components but in different ways and most materials for those components that are gasoline tolerant are not alcohol tolerant and vic-a-versa with only a few select materials that are tolerant to both. Run gasoline in a fuel delivery system designed for alcohol fuel and it can wreck it, run alcohol fuel in a fuel system designed for gasoline and it can wreck it. There are some fuel delivery systems made with materials that are tolerant to both but that is not very common. Believe me its not the alcohol per-say that is the problem, I used to run high test pure alcohol racing fuel systems both aviation and ground vehicle and I can assure you alcohol is actually the superior fuel, its just your fuel system has to be built to use it (or properly converted).
Long story short, the correct way to say that would be they run ethanol in a riding lawn-mower with a fuel system that is designed for gasoline (and actually designed not to be compatible with alcohol fuel) and it wrecks the fuel system on the motor. Doesn't wreck the motor, just the fuel delivery system (which of course means it don't run but its not the motor itself that gets wrecked).
I've got a couple 2-stroke chain-saws right now that I run on mixture of pure 190 proof ethanol and bio-diesel and they run great on it and have for several years. BUT
I properly did a full conversion on their fuel systems to be fully compatible with alcohol fuel. Had to do it in my case since I use multiple cords of self-cut fire-wood for winter heat every year and the exhaust fumes from regular gasoline 2-stroke chainsaws were making me so sick I would vomit and couldn't hardly stand up with a pounding migraine headache. I seem to be more sensitive to being up close and breathing those kind of fumes from a dirty gasoline 2-cycle (even the modern ones that aren't as bad) then most people. Don't get sick anymore cutting my firewood after changing over to alcohol fuel with the bio-diesel mixed in for 2-cycle lube.