<div>Chris,</div> <div> </div> <div>I have never done this (yet) but it is only for brushed motors. It helps to seat the brushes to the commutator, without building up heat and without the worn material staying in the motor. For the small can motors, hook it up to a D cell battery, immerse the motor, and let it run until the battery is dead. The water will be dark from the material worn off. Dry it out very well, and lubricate the bearings.</div> <div> </div> <div>Bob R.</div> <div> <BR><BR><B><I>"White, Chris" <chris@ssd.fsi.com></I></B> wrote:</div> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"><BR>I have a question / observation that maybe someone can clear up for me:<BR>I've noticed recommendations to break in some electric motors while<BR>immersed in water....Is that for real??? (does it only apply to brushed<BR>motors..???) I have had an Ace Puddlemaster flip upside down to
dunk<BR>the pylon mounted can (brushed Speed 600) motor and it all runs fine<BR>after drying....although I don't know the status of that motor 5 years<BR>later...:)<BR><BR>Chris White<BR><BR>-----Original Message-----<BR>From: nsrca-discussion-bounces@lists.nsrca.org<BR>[mailto:nsrca-discussion-bounces@lists.nsrca.org] On Behalf Of Fred<BR>Huber<BR>Sent: Wednesday, August 09, 2006 2:19 PM<BR>To: NSRCA-discussion@lists.nsrca.org<BR>Subject: Re: [NSRCA-discussion] Electric/Glow Pros and Cons<BR><BR>The way the brushless motors are made.... corrosion is the biggest issue<BR>for <BR>the motor itself. They should work submerged in a bucket of water.<BR><BR>The ESC would need to be kept dry. Water getting under the heat shrink <BR>could cause it to short. First effect I would expect is confusing the <BR>programming's sensing of the motor rpm, blowing the synchronization<BR>(shuts <BR>down the motor.)<BR><BR>The batteries should be reasonably resistant to a little rain.
Don't<BR>want <BR>to get them wet enough to cause a short though. Depends on if they used<BR><BR>good insulating materials in the pack... or like has been found in<BR>some... <BR>paper based masking tape. The masking tape plus water and you may as<BR>well <BR>have a low value resistor.<BR><BR>Overall... if the average modeler is willing to stand in the weather<BR>(rain, <BR>snow, sleet....) the model can probably handle it with little or no<BR>added <BR>protection.<BR><BR>----- Original Message ----- <BR>From: "Steven Maxwell" <PATTERNRULES@EARTHLINK.NET><BR>To: "NSRCA Mailing List" <NSRCA-DISCUSSION@LISTS.NSRCA.ORG><BR>Sent: Wednesday, August 09, 2006 2:04 PM<BR>Subject: Re: [NSRCA-discussion] Electric/Glow Pros and Cons<BR><BR><BR>> Here's another question for electrics, at the Nat's Thursday it was<BR>light<BR>> rains on and off, I'm pretty sure at least one l fight was made in a<BR>light<BR>> rain, brushless motor have no brushes but I would think you
still<BR>wouldn't<BR>> want to get wet or even damp, we've had light rain here all day and<BR>was<BR>> planning on going flying but with an outrunner where is the stopping <BR>> point?<BR>> Also I when my other motor went belly up I put my batteries in the<BR>frig at<BR>> a 3.85 volt per cell storage charge as recomended by manufacture but<BR>> noticed condesation when I<BR>> removed , I wouldn't think that would be good for any wiring, concacts<BR>and<BR>> tabs. They was kept in a Brinks firesafe all the time.<BR>> I also carry them in the van at all times in the firesafe temp have<BR>never<BR>> been a problem in the case ( no direct exposure to sun) smaller packs<BR>kept<BR>> in battery bunker with same thing no heat build up.<BR>><BR>> Steven Maxwell<BR>><BR>><BR>><BR>><BR>>> [Original Message]<BR>>> From: Earl Haury <EHAURY@HOUSTON.RR.COM><BR>>> To: NSRCA Mailing List
<NSRCA-DISCUSSION@LISTS.NSRCA.ORG><BR>>> Date: 8/9/2006 2:31:40 PM<BR>>> Subject: Re: [NSRCA-discussion] Electric/Glow Pros and Cons<BR>>><BR>>> I also have a 110 / 12V fridge / heater. The thing is preset @ 45F<BR>for<BR>>> cooling & 140F for heating. To prevent condensation the cooling level<BR>> needs<BR>>> to be above the dew point - probably 75F around here. The packs I'm<BR>using<BR>>> (Falcon F3A) don't seem affected by lower temps - so I only use the<BR>> heater<BR>>> for a hand warmer on those cold Houston winter days when it gets down<BR>> around<BR>>> 50F. I've a "to do" item on my list to look at the controls of this<BR>thing<BR>> to<BR>>> see if I can change the set points.<BR>>><BR>>> Earl<BR>>><BR>>> ----- Original Message ----- <BR>>> From: "Richard Strickland" <RICHARD.S@ALLIED-CALLAWAY.COM><BR>>> To: "'NSRCA Mailing List'"
<NSRCA-DISCUSSION@LISTS.NSRCA.ORG><BR>>> Sent: Wednesday, August 09, 2006 11:16 AM<BR>>> Subject: Re: [NSRCA-discussion] Electric/Glow Pros and Cons<BR>>><BR>>><BR>>> > Certain manufacturers/assemblers are saying internal condensation<BR>could<BR>> be<BR>>> > a<BR>>> > problem from cooling. I did buy a little electric Coleman cooler<BR>for<BR>> about<BR>>> > 50 bucks at Cabelas (3 amps). Once I get back in the groove (if<BR>ever),<BR>>> > I'll<BR>>> > probably plug it in at noon at lunch, and then again on the way to<BR>the<BR>>> > field<BR>>> > that eve. Just enough to keep the temps reasonable. But it's just<BR>>> > another<BR>>> > 'thing'.<BR>>> ><BR>>> > RS<BR>>> ><BR>>> > -----Original Message-----<BR>>> > From: nsrca-discussion-bounces@lists.nsrca.org<BR>>> >
[mailto:nsrca-discussion-bounces@lists.nsrca.org] On Behalf Of Jay<BR>>> > Marshall<BR>>> > Sent: Tuesday, August 08, 2006 5:40 PM<BR>>> > To: 'NSRCA Mailing List'<BR>>> > Subject: Re: [NSRCA-discussion] Electric/Glow Pros and Cons<BR>>> ><BR>>> > Sounds like a foam cooler and a bag of ice should keep them cool.<BR>>> ><BR>>> > -----Original Message-----<BR>>> > From: nsrca-discussion-bounces@lists.nsrca.org<BR>>> > [mailto:nsrca-discussion-bounces@lists.nsrca.org] On Behalf Of<BR>Richard<BR>>> > Strickland<BR>>> > Sent: Tuesday, August 08, 2006 6:36 PM<BR>>> > To: nsrca-discussion@lists.nsrca.org<BR>>> > Subject: [NSRCA-discussion] Electric/Glow Pros and Cons<BR>>> ><BR>>> > Just having a debate with myself on the pros and cons for the long<BR>>> > haul.....<BR>>> > Seems like it's been hovering around 95-100F
around here since<BR>early<BR>> June.<BR>>> > I'm not liking the fairly significant batt. temp. rise from<BR>ambient.<BR>>> > (batt.<BR>>> > life issues) The batts have to sit in a fairly hot car all<BR>day-charged<BR>>> > for<BR>>> > practice in the evening. I have to make a decision the nite b4 to<BR>fly<BR>> or<BR>>> > not the next day to charge. Batteries are still damned expensive<BR>even<BR>> if<BR>>> > you get a decent deal and the jury is still out on longevity Gotta<BR>> grease<BR>>> > things fairly often. Heavy. But they are cleaner and easier to<BR>> manage<BR>>> > at<BR>>> > the field. Glow engines, when driven to the max-like I do-tend to<BR><BR>>> > have<BR>>> > their own share of issues, somewhat messy, and require more field<BR>>> > equipment<BR>>> > at the line. The bigger units require A LOT of fuel to make
all<BR>that<BR>>> > power.<BR>>> > But I feel I can fly them no matter how hot it is and not worry<BR>about<BR>> them<BR>>> > (as much). Deciding to fly is a matter of just GOING.<BR>>> ><BR>>> > I'm just throwing this out there in case anyone else is having<BR>similar<BR>>> > thoughts... ho-hum...<BR>>> ><BR>>> > RS<BR>>> ><BR>>> ><BR>>> > _______________________________________________<BR>>> > NSRCA-discussion mailing list<BR>>> > NSRCA-discussion@lists.nsrca.org<BR>>> > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR>>> ><BR>>> ><BR>>> ><BR>>> > _______________________________________________<BR>>> > NSRCA-discussion mailing list<BR>>> > NSRCA-discussion@lists.nsrca.org<BR>>> > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR>>> ><BR>>>
><BR>>> ><BR>>> > _______________________________________________<BR>>> > NSRCA-discussion mailing list<BR>>> > NSRCA-discussion@lists.nsrca.org<BR>>> > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR>>> ><BR>>><BR>>><BR>>> _______________________________________________<BR>>> NSRCA-discussion mailing list<BR>>> NSRCA-discussion@lists.nsrca.org<BR>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR>><BR>><BR>> _______________________________________________<BR>> NSRCA-discussion mailing list<BR>> NSRCA-discussion@lists.nsrca.org<BR>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion<BR>><BR>><BR>><BR>> -- <BR>> No virus found in this incoming message.<BR>> Checked by AVG Free Edition.<BR>> Version: 7.1.405 / Virus Database: 268.10.8/414 - Release Date:<BR>8/9/2006<BR>><BR>>
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