Motor now moos like a cow - RC Groups
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Nov 17, 2012, 11:31 PM
Balsadustus Producerus

Motor now moos like a cow

A little embarrasing but I've gotten myself into a bit of trouble with one of my outrunners. I was checking out the Hobby People email advert in my inbox, where they introduced their new 'Fortieth Anniversary-The Real Thing" ARF for about $70. I saw where the recommended motor might be one I already have, so I picked it up off the shelf, swung over to the computer where dinner was sitting, and as I went over the glass of milk my chicken-greased fingers let go, neatly dumping the motor into the milk My first response was rinsing it off in water and hanging in front of a desk fan for drying out, when I realized that might be worse than the milk. I HAD to get the photo but am surprised it came out well, as I was laughing so hard I didn't think the camera would be steady.

Does anyone here have experience dunking an outrunner in water and regretting it later? Any advice would be welcome.
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Nov 17, 2012, 11:42 PM
Registered User
Underthetire's Avatar
I dunked one in water, with the entire plane. Rinse in distilled water. Let dry. You may end up needing to re oil the bearings. Mines still going 4 years later.
Nov 17, 2012, 11:50 PM
Wake up, feel pulse, be happy!
Piece's Avatar
Brushless motors are essentially waterproof. There's just nothing in them besides bearings that water can really have a profoundly negative effect on. If there was a bunch of really nasty crap dissolved in your water then it might be able to attack solder joints, but personally I wouldn't be too nervous about that.

I would expect milk to be much, much worse than water, as it would get in little crevices and leave icky things behind once the liquid portion has evaporated.
Nov 18, 2012, 12:03 AM
I think I'm inverted. Maybe.
acetech09's Avatar
Rinse generously in distilled water. Rinse again. And again. Make sure you dry them out quickly each time. Rinse again. And again. Get all that milky goodness out of the motor. Take it apart if you know how, rinse everything seperately and dry them with a blowdryer/heat gun on low.

Then re-oil the bearings and you should be good to go.
Nov 18, 2012, 07:56 AM
Registered User
flypaper 2's Avatar
Yeah, rinse it out and dry it out. All that calcium may be hard on its joints.

Nov 18, 2012, 01:54 PM
Registered User
Worst case is mold or mildew growing in the wire windings.
Washout the milk & dry out completly & re oil.
Nov 21, 2012, 10:22 PM
Balsadustus Producerus
Looks like I was successful as after a couple days the motor still turns and doesn't smell like old moo-juice. Thank you all
Nov 22, 2012, 04:50 PM
Registered User
vintage1's Avatar
Originally Posted by cyclops2
Worst case is mold or mildew growing in the wire windings.
Washout the milk & dry out completly & re oil.
worst case is cheese..Blue cheese.FRENCH blue cheese.
Nov 22, 2012, 11:02 PM
Wake up, feel pulse, be happy!
Piece's Avatar
Well, at least now you know the motor's not lactose intolerant
Nov 22, 2012, 11:12 PM
lectroglide's Avatar
now if that was a brushed motor thats how youd break it in a can of water, thankfully those days are over
Nov 23, 2012, 05:58 AM
Registered User
Thanks C H...........

I am very intolerant of anything.

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