Re: (ET) Nope, that wasn't it...

["RJ Kanary" <rjkanary nauticom net>]

   Sounds like time to go to an auto- electric shop that has a growler, and
find out if the armatures are dead. You could have a chicken/ egg situation
here.
    Did the brushes stick in the guides because of excessive current draw
due to shorted windings , or was the commutator overheated and damaged due
to poor brush contact, due to the scenario that I have observed, mentioned
in my previous post ?

----- Original Message ----- 
From: "Chris Zach" <czach computer org>
To: "Elec-trak list" <elec-trak cosmos phy tufts edu>
Sent: Thursday, April 08, 2004 9:19 PM
Subject: (ET) Nope, that wasn't it...


> Fired up the motor. Starts, then stops. try to bypass the thermo switch
> and you get a set of sparks that will burn the end of your screwdriver
> off...
>
> Not the brushes; they are clear. What the heck could cause this? Any why
> on two of the three motors? Could the windings have just gone bad at
> once? Anyone have this happen?
>
> Chris
>
>
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