What to do about ethanol gas when winterizing?

[mkast]

Re: What to do about ethanol gas when winterizing?

The guy who leaves his battery on the floor in freezing weather will have to buy a new battery sooner than the guy who puts a piece of wood under his.

Batteries discharge because that's the nature of the beast.
Any battery website will tell you that wood under the battery is from the old days (long before you where born) when battery cases were made of wood.
A dirty battery case will cause a current path across the case, discharging the battery more.
No slam intended, but when I was in the military, I noticed the military lets just about anyone work on anything, as long as they had a pulse.
One thing I learned working at an A&P school, research it before you "think about it". Then research it again, before you comment on it, there is always a student ready to contradict you.
Always keep in mind, "Because you haven't run into it, doesn't mean it doesn't exist."

 

[HT32BSX115]

Re: What to do about ethanol gas when winterizing?

Yeah,

That's so true!
I only did 24 years in the USAF. I learned that old wives tales, old habits, and myths are the hardest to break!!


Regards,


Rick

 

[flargin]

Re: What to do about ethanol gas when winterizing?

If you look at almost every battery website they will say something similar:
Will placing my battery on concrete drain the charge?
A battery will not lose its state-of-charge strictly from placing it on a concrete surface, but will discharge it over a period of time, due simply to neglect. source: http://www.exide.com/faq/faq_marine.html#concrete

They do say it WAS true, when the cases were made of Rubber (or before that wood),

I got to say I never saw a battery case made of wood, but this lowly cadet sure won't challenge the words of a Chief Petty Officer.

Batteries discharge because that's the nature of the beast.
Any battery website will tell you that wood under the battery is from the old days (long before you where born) when battery cases were made of wood.

mkast - err sir. thanks for a good laugh

 

[HT32BSX115]

Re: What to do about ethanol gas when winterizing?

How did the carb on the plane freeze up. Was it the fuel that froze? Where did the water come from but the tank.

I guess I could answer that question,

Carb ice is not from the fuel at all but from the vaporization of the fuel . When the air goes thru the venturi, it "speeds up" as it goes thru the smaller opening which also lowers the pressure. When this happens the temp also drops some. When the fuel is vaporized in the carb the vaporization causes an even larger temp drop cooling the carb even more. Any moisture in the air collects on the "throat" of the carb once it's cold enough to cause the condensation of water from the induction air.....if it's cold enough initially it will be just above freezing as it enters the carb and vaporizing the fuel will take it right to the dew point. If the air is sufficiently humid a lot of water will condense (and freeze)........ If the outside temp is already near freezing there won't be as much humidity....plus it will be MUCH colder in the carb from the fuel vaporizing.

Most of our boat engines don't experience carb ice because the carb/manifold is pretty close to the engine and able to conduct heat from the engine to the carb. and the warm engine compartment ......(fuel injected engines are not as susceptible "carb icing" since the fuel is not vaporized near the venturi/throttle plate except maybe for TBI)

There's a great illustration HERE for anyone that cares...


Cheers,