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11-01-2012, 07:33 PM | #1 |
Pebble Pounder Join Date: Sep 2005 Location: Fruita
Posts: 108
| DeWalt Motor - Dispelling the Myth, but Fixing the Problem
I've read right here on this forum (and others..) that the 14.4v DeWalt motor has a bearing supported armature. Well, it doesn't. I dug into mine after getting tired of a screetching sound I could only eliminate by spraying a little WD-40 into the back of my motor. A little later, it would start screetching again though. Thinking it was just a bad motor, I was surprised when a couple weekends ago, my brother's DeWalt powered Summit was making the same sound. It was time to find the problem. After removingthe brushes and prying off the end cap, I was surprised to see that the back of the armature is supported by a bronze bushing, not a bearing. And yup, it had a sloppy fit on the armature. Luckily, it measures 8mm x 5mm x 5mm. So I replaced it with two 8mm x 5mm x 2.5mm bearings, and problem solved. The motor is now silent, and turns very smoothly. If you don't have a local hobby store with bearings, you can order Traxxas part # TRA5114 and get a package of two bearings that will work. Hopefully this helps anyone with the same screetching DeWalt motor problem. Last edited by monsterz; 11-04-2012 at 08:46 AM. Reason: more detail |
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11-02-2012, 07:45 PM | #2 |
Pebble Pounder Join Date: May 2012 Location: muscatine
Posts: 130
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem
I wondered
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11-04-2012, 03:29 AM | #3 |
Quarry Creeper Join Date: Jan 2012 Location: Home
Posts: 296
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem
Sticky this one some where
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11-04-2012, 01:32 PM | #4 |
Newbie Join Date: Dec 2007 Location: Cypress
Posts: 28
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem
Ya know, WD40 is not a lubricant................
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11-04-2012, 02:34 PM | #5 |
RCC Addict Join Date: Aug 2009 Location: Earth?
Posts: 1,698
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem
MAN! I can take those bushings and cut em down a little and use them for my XR10. |
11-04-2012, 06:03 PM | #6 |
Quarry Creeper Join Date: Jan 2012 Location: Home
Posts: 296
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem
WD-40 works ok for getting rusted bolts and nuts off of vehicles, but there are definitely far better products, and I would not call it a lubricant, makes things squeaky, like car doors. Its more of a clean crap out of a joint or hinge spray. Better to use a silicone spray or grease for lubricant.
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11-04-2012, 07:07 PM | #7 |
Pebble Pounder Join Date: Sep 2005 Location: Fruita
Posts: 108
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem
I know WD-40 is not a permanent lubricant. However, no lubricant will solve the issues associated with a sloppy bushing. I even tried packing the end with synthetic grease, and it didn't solve the problem any longer than WD-40 did.
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11-18-2012, 06:29 AM | #8 |
Quarry Creeper Join Date: Apr 2010 Location: Southern Aroostook County
Posts: 299
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem
Ive been using silicone spray from CowRC on all my RCs for a while now and it works awesomely on bearings and bushings!
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12-11-2012, 12:48 PM | #9 |
Rock Stacker Join Date: Mar 2011 Location: powhatan
Posts: 87
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem
wd-40 is not a lubricant at all, it's a water displacement (hince wd...) agent. it is used to dry metals without rusting them, or helping to remove small amounts of rust. but it will actually cause more harm than good trying to use it as a lubricant.
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12-11-2012, 05:17 PM | #10 |
Pebble Pounder Join Date: Sep 2005 Location: Fruita
Posts: 108
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem
Not sure how this turned into a wd-40 debate, but it most certainly is a lubricant. Why do you think it works for breaking loose rusty bolts? I do agree that it's a poor choice for a long term lubricant, however. You might check out their website...
Last edited by monsterz; 12-11-2012 at 05:17 PM. Reason: clarity |
12-11-2012, 05:19 PM | #11 |
Pebble Pounder Join Date: Sep 2005 Location: Fruita
Posts: 108
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem
It's funny this thread came up today, as I was just talking to my brother and how his DeWalt lunched the bearing on the output side of the motor. So it most definately does have a bearing supported armature on the output side.
Last edited by monsterz; 12-11-2012 at 05:19 PM. Reason: edits |
12-31-2012, 05:41 PM | #12 |
Newbie Join Date: Apr 2007 Location: kamloop bc
Posts: 13
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem
VERY good thread, thank you for this tip. I have a Dewalt 14.4 in mine and although it isn't skreeeeching yet (I use oil) it will be on my upgrade list of things to do. Once again thank you |
12-31-2012, 05:54 PM | #13 |
RCC Addict Join Date: Mar 2007 Location: Turn the mayflower around.. it will never work
Posts: 1,588
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem Ive said this many times before...... the motor is just a larger version of every other silver can motor..... no bearings good find on the bearing.... still a cheap motor. brasso and quality lube soaked into bushing is what we always have used on vintage trans am motors. |
02-02-2013, 08:27 PM | #14 |
Newbie Join Date: Oct 2012 Location: Cleveland
Posts: 31
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem
How long do the DeWalt motors last before destroying the bushing?
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02-05-2013, 08:10 PM | #15 |
Pebble Pounder Join Date: Sep 2005 Location: Fruita
Posts: 108
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem
It will depend on useage and how much battery you're putting through it. I think it has similar durability to the stock motor, but it does seem to have slightly better performance.
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03-27-2013, 12:29 PM | #16 |
Pebble Pounder Join Date: Dec 2007 Location: canada edmonton alberta
Posts: 188
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem
How did you open the can to get the bearings in ?
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03-30-2013, 07:58 AM | #17 |
Pebble Pounder Join Date: Sep 2005 Location: Fruita
Posts: 108
| Re: DeWalt Motor - Dispelling the Myth, but Fixing the Problem
Pull the brushes out, then slowly pry it off with a screwdriver. It's just pressed on.
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