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[Amps] Replacement Fan Motor for Drake L-4B

To: "Amps@contesting.com" <Amps@contesting.com>, "rfamplifiers@yahoogroups.com" <rfamplifiers@yahoogroups.com>
Subject: [Amps] Replacement Fan Motor for Drake L-4B
From: Russ Williams <hrd998cc@yahoo.com>
Reply-to: Russ Williams <hrd998cc@yahoo.com>
Date: Mon, 25 Nov 2013 19:29:45 -0800 (PST)
List-post: <amps@contesting.com">mailto:amps@contesting.com>
My fan motor would get noisy every once in a while, and I had been looking at 
replacing it with a modern substitute.

Long story short, the GE motor in the L-4B lists its rotation at 1550 RPM and a 
counter clockwise rotation.  Currently, a "Packard" 40120 is being produced 
that fills the bill.  It is listed as a "Clockwise" rotation, but the rotation 
matches the stock Drake motor.  Perhaps the Chinese have a different view of 
rotation?  Packard also produces a counter clockwise version (40121) that does 
not work in the Drake


Mods and mounting:

The Packard 40120 comes with mounting studs on both the front and the back.  
The rear studs must be trimmed off, and a couple washers need to be added onto 
each front stud to get the proper setback.
The motor shaft is slightly too long and must be trimmed to suit.  

Other than these mods, it is a drop-in fit.  

So far, so good.
Russ
KW6T
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