Rust is caused by Oxygen and water. As the water "dries", it causes the metal to oxidize, and, rust. Distilled water will have the same effect on metal as tap water.

HOWEVER, distilled water takes longer to cause rust than tap water, because it contains less oxidants I believe.

thats what i thought this was about, but a few people brought up the EP being underwater, and how the car will short underwater

they are dipping the motor under water, not the whole car :)

why are we driving xmods underwater? call me crazy but i really dont see a need to be there in the first place

and if anything, just run the motor on 7.2v for a little while, it should build up enough heat to steam the water out of the commutator and other hard-to-hand-dry spots. (almost all 130's for RC cars have a hole in the endbell, take advantage of it.)

I dont want to start a huge arguement, but I am going to have to disagree with you.

Calcium:
http://www.eh.doe.gov/techstds/standard/hdbk1081/hbk1081d.html

Rust:
http://www.metalwebnews.com/howto/rust/rust.html

And no, I didnt learn what I said from those sites, I learned it in my Chem I class last year.

Also, I water dipped my motor yesterday. I then opened it back up, went to my aircompressor, and sprayed everything all nice and dry. I let it sit for a an hour, then I used some lube to put on the armature and in the ends of the can. It runs fine, and I have done this before without any rust problems.

calcium and other materials cause rust and other material build up.

pure calcium doesnt go boom. pure solfur will, catches fire.

anyways lets drop this, its kinda beggining to thread jack.

Evo raptor is right. Calcium and other metals do not cause rust. They dont, period. Also, pure clacium(which is a metal) does not exist in water. It goes BOOM in water. It takes the oxygen from the H2O, reacts with it, heating up very very quickly, then ignites the remaining Hydrogen. Along with any other elements in the first and some in the second column of the periodic table.

When metal oxidizes, it looses an electron, this creates a new compound alltogether, as we know it, rust.

So basically, you need to dry the motor completely(use whatever water you want) then put some bearing lube in it.

dude, ur the stupidst n00b weve got, dont go insulting others

Isn't rust caused by oxidation (presence of oxygen), and since water is part oxygen, it would still rust upon contact. You'd probably just get a more pure rust, or oxodized metal. I've water dipped 540's before, I think they work with 130's.

i believe so, distilled doesnt have calsium and other minerals that would cause rust.

Duh, not that much!
another duh because it will most likely short the whole XMOD
It will be all like...
*car goes underwater*
*car doesn't move, but sinks*
*car is lost to kiddie pool*
ROFL :lol: :lol: :lol: :lol: :lol: :lol:
That's not good. *yet another DUH!*

P.S. :P Don't do it!

wow, of course it will work... right up until its stops. we have a rocket scientist

xmods will short out, any electronics will short. the water will also begin to oxidize on the board. trust me, dont do it lol.

Hell, I drove my Hummer and F-150 through snow and did not have any problems, albeit, it wasn't for very long, more of a test run to see if it would start glitching, but I had no issues at all.

You could probably submerge them entirely in water and they would operate before they stop running, and I would bet also after they dry it would still work. I simply cannot see these things drawing enough juice to actually fry or short anything out permanently. (though i could be wrong)

were talkin motors, not EPs

de de durrrrr

I doubt it would work if the motor or electric crud is still wet when working.

naw, u can get these fairly wet. no deep puddles, but wet surfaces ive had no problems. only once have i had to tear mines down to let it dry.'

the evos are a lil more water resistant i would guess. i have a gen1

I think as a general rule (unless its a beater), you want to keep you xmod as clean as possible, and that includes keeping it dry. If there is any question, I'd be safe and keep it clean and dry.

gotcha :wink:

Water has too much resistance to cause a dead (total) short. The motor will still receive the majority of the electricity.

if you have them underwater, wont that short the motor terminals?

No.

They will operate under water, but its not recommended. The metal parts will rust.

Some people dip new motors in water to help break them in. But you have to make sure that you completly dry the motor or it will rust.