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Re: (ET) Another mower motor blows.



Is your tractor outdoors? Mine is and i have thought it was water but this motor was dry inside.

Photos soon. Normally happens over winter.

On June 13, 2018 12:54:59 PM EDT, Dean Stuckmann <dstuckmann icloud com> wrote:
Maybe I’m just lucky but I’ve been mowing a bit over an acre a week since 1980 between (3) thin motor decks. As far as I can recall, I only had one motor fail due to bent armature (big rock) and one that shorted. Replace bearings between 5-10 years as needed. Brushes were never an issue. 

I wonder why the huge variations from other users?

Regards,

Dean A. Stuckmann
5432 County Road U
Newton, WI 53063




On Jun 12, 2018, at 9:06 PM, John Jeno <jjjeno hotmail com> wrote:

I've been looking at replacement deck motors.
I have used the Black and Decker 36v drives and they are still running (2yr - 1acre).
Another deck has tall motors and the terminal insulation is failing.  I could switch a couple out with HD fat drives but would like to try newer drives.

It seems the TORO 20" model #20360 uses the Ametek CPM-160.  About 970watts. 
Motor + Fan + base+ blade,washer,nut = $245.87 from E Replacement.

The Neuton CE6 motor setup, Motor + Fan + base+ blade,washer,nut = $138.54.

Anybody have any experience with these mowers?



From: Rod Hower <rodhower ameritech net>
Sent: Tuesday, June 12, 2018 7:45 PM
To: Charlie; Christopher Zach; Elec-Trak
Subject: Re: (ET) Another mower motor blows.
 
I'll check with the guys at work, Ametek-Rotron Lamb electric, build thousands of PM motors, many of which are used as starters and sit beside the engine.  I'm sure those guys have some pretty good ideas on which glues hold PM's in place. http://www.ametekdfs.com/dfsbrands/drivemotors/pmdc-motors


On Tuesday, June 12, 2018 7:57 PM, Charlie <medievalist gmail com> wrote:


Steve Naugler figured out how to reglue the magnets, I think.  Somebody did, anyway, you should be able to find it in the mailing list archives.

--Charlie

On Tue, Jun 12, 2018, 7:22 PM Chris Zach <cz alembic crystel com> wrote:
Well, had the usual deck motor failure. This seems to happen every other 
year or so with tall thin motors:

Mows fine one weekend.
Start mower next weekend, tractor pulls huge amount of current. Blade is 
stopped.

Blade free-wheels, wiring to motor is smoked.

Take motor top off, commutator is burned, and armature is obviously 
shorted. Motor destroyed.

Any idea why this happens? The inside of the motor was dry, no problems, 
plenty of brush. It's as if the laminates just decide to fail and burn 
everything up.

Now to buy some more motors, my supply is low. This never happens to fat 
motors, they just have the magnets deglue and shatter all along the 
inside. Once again no reason, is there a glue that will hold them?

C

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