"Robert Swinney" wrote:


Bob Swinney
"Wes" wrote in message news "Ed Huntress" wrote:

Don't miss this. Just don't. Even if you have to sign in to read it.

http://www.nytimes.com/2009/05/24/ma...1&ref=magazine


Excellent read! A good day at work is when I'm presented with an interesting problem to
diagnose and correct. I particularly enjoyed where he went into figuring risk / reward to
various approaches at a problem. Oh and the starter problem with the bushing and armature
dragging, been there done that, 1965 Biscayne sta wagn.

Wes

Right on, Wes. It reminds me of a multi-Hp DC motor that operated on of the retarders in a large
rail yard. Our signal department had sent the motor out to a local electrical shop a couple of
times but it always came back, "no trouble found". In as much as this was a very large and heavy DC
motor, I suspected the shop had assumed it would have obvious and had not actually megged it.
Without a megger, I tested the various windings with a high-voltage DC current supply and soon found
leakage. We sent it back to the shop with a description of which winding was leaky.


Don't ya hate it when you send something out to the 'pros' or call them in and still end
up solving the issue yourself.

Wes