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RE: Engine maintenace
It actually all depends on the current dew point. If the object (in this case the can) is colder than the dew point, moisture will condensate on the object.
If it's warmer than the dew point, moisture will not condensate. That's all there is to it. [link=http://en.wikipedia.org/wiki/Dew_point]Dew Point - click me.[/link] |
RE: Engine maintenace
ORIGINAL: Townsley dude...when its hotter there is more moister. think of a can of pop...its colder than the air around it..so the heat cause it to condense making condensation on the can......soo wouldnt there be more moister in hot air than there is in cold air? yes the can is not going to make as mch condensation in cold weather as it would if u had it outside on a hot summer day. |
RE: Engine maintenace
kianda p155es on your theory.
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RE: Engine maintenace
warm air has the ability to contain more moisture than cold. That doesn't mean under every condition. Think of a cold winter morning with a fog so thick you can't see. That fog is moisture and at a very high volume. Now think of being in Las Vegas where it can be 100% and such a low moisture content your mouth dries out like a piece of leather. Still the point here is how do you store your engine for a long period safely.
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RE: Engine maintenace
It's been said numerous times already. Clean it good inside and out, oil it well and put it in a ziplock bag.
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RE: Engine maintenace
The dewpoint in Florida will almost always be higher than the dewpoint in Scotland. Florida's air is hotter, it contains more moisture. Cold air can't hold as much water as warm air, it's a simple meteorological fact. Having a hot engine sitting in cold air is no big deal. When the cold air is warmed up by the engine, the relative humidty will drop like a rock.
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RE: Engine maintenace
thats what i was trying to say.....
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RE: Engine maintenace
cooler air naturally contains more moisture, |
RE: Engine maintenace
OK my two cents is that I have always used ARO and I have never had rust in an engine, people can debate all they want but the results are negligable.
The condensation your talking about has a lot to do with relative humidity and temperature differences. If somthing is hot in a cold environment it will repell water because the air around it will be thinnner due to the heat and vise-versa for somthing that is cold in a hot environment, give there is enough humidity in the air, thats it. Hot=expands Cold=contracts |
RE: Engine maintenace
So is this a discussion about how much moisture air contains or how to store an engine for a period of time?
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RE: Engine maintenace
ORIGINAL: SManMTB So is this a discussion about how much moisture air contains or how to store an engine for a period of time? |
RE: Engine maintenace
It all depends on air pressure as to how much moisture the air contains. low pressure = low moisture due to the fact there are less air/water molecules per cubic measurement.
Therefore a place at sea level will have much more moisture than say mexico city at the same temperature. On the engine care front, I run my engine dry and if I use it again soon i don't bother with ARO. if however I may not use it for a while I add ARO. |
RE: Engine maintenace
It's all about air pressure and elevation? No way. Temperature plays a huge role. Compare the moisture content of the air in Barrow, Alaska (sea level) to the higher elevation tropical climate of Columbia. You'll see.
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RE: Engine maintenace
LOL. WD 40(I dont think) gets gummy after a long time of sitting in the engine. I personaly use the gasser type 2 stroke oil for my engines and they all last a while except for the VX-18 I had. ATF seems to be the better of them all. Also, if you run certan fuels check the bottle, I run the sidewinder mix and it has ARO in it and says NOT to use it after running.
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RE: Engine maintenace
ORIGINAL: SD2006 It's all about air pressure and elevation? No way. Temperature plays a huge role. Compare the moisture content of the air in Barrow, Alaska (sea level) to the higher elevation tropical climate of Columbia. You'll see. The temperature of the air does affect the amount of water the air holds, but the actual amount depends on pressure |
RE: Engine maintenace
I missed the temperature comment in your original post, sorry. I'd agree pressure is relevant in all of this, but a pressure difference between two air masses of equal temperature won't tell you which one will be holding more moisture. Besides, the two locations being compared in this thread probably aren't going to have a substantial difference in elevation.
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RE: Engine maintenace
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Oh, oh. The thread is becoming more and more offtopic of the thread's name :D I have a table which shows the tuning on your engine in those situations
http://image2-5.rcuniverse.com/e1/fo...73/Ca81555.jpg |
RE: Engine maintenace
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ORIGINAL: SD2006 I missed the temperature comment in your original post, sorry. I'd agree pressure is relevant in all of this, but a pressure difference between two air masses of equal temperature won't tell you which one will be holding more moisture. Besides, the two locations being compared in this thread probably aren't going to have a substantial difference in elevation. Couple that along with the picture below showing mean water vapour levels and look closely where Scotland and florida are and you may well have to retract that statement. Just remember air pressure and weather systems are more complex than you could possibly imagine even within (relatively) small areas such as a US state. |
RE: Engine maintenace
This topic went over board in a big way. LOL
Don't forget the moon, it has a huge effect on the climate too. |
RE: Engine maintenace
ORIGINAL: SManMTB This topic went over board in a big way. LOL Don't forget the moon, it has a huge effect on the climate too. |
RE: Engine maintenace
ORIGINAL: RBMike Marvell's mystery oil works great & a pint cost a couple of bucks at any hardware store. Automatic transmission fluid works as well. Always run the car out of fuel the last tank of the day, put a few drops of oil in & turn the motor over a few times. For long term storage (over the winter) clean the motor with motor spray & add about 15-20 drops of oil & put the whole motor in a zip-lock bag with all the air sucked out. (I aslo save those little moisture desicator packs that come in almost every thing electronic that we buy. Throw one of those in the zip-lock with the motor to attract any moisture still in the bag.) Your air temp Your relative humidity Your elevation Your global grid coordinates Your barametric pressure Your anual rain fall Your astrological sign Your local tide hight The position of the moon. Ohh, I forgot global warming. |
RE: Engine maintenace
Are you sure!? I'm starting to believe what I've been doing for 18 years without problems is wrong!
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RE: Engine maintenace
ORIGINAL: Osirisf16 Hey guys, i want to ask you what are you doing if you want to keep your nitro engines for some months? I know that the nitro-fuel after a period of time becomes some jelly kind (hard thing) :eek: |
RE: Engine maintenace
ORIGINAL: RC_HAVOC Also the air, humiddity, and normal engine temp ALWAYS changes. so there is no perfect day to day settings. If we could keep them all the same from day to day then our engines would last longer then avrage. |
RE: Engine maintenace
ORIGINAL: SManMTB Are you sure!? I'm starting to believe what I've been doing for 18 years without problems is wrong! |
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