Bob-
A technical amplification of one part of your statement.
While it is highly likely that the Aurora Shops prefabricated components for
both the 4000 and 4001 Aeolus locomotives, much of the work was done on-site at
West Burlington by the forces there so they must have had some shotwelding gear
there for the work. There are photos of both in progress at West Burlington
and it is clear that much of the shrouding was fabricated on site. No doubt
the corrugated panes and perhaps the compound curved sections were supplied by
Aurora, but the simple sheet work was cut and fitted directly on the
locomotives.
As the thread is concluding, the key to preventing electolisis from happening
is keeping moisture out from behind the sheathing. I am not familiar with the
PS corrugated sheathing, but even the Budd panels that were mechanically
fastented to the carbody were apprarently pretty watertite, with the snap-in
covers protecting the sealed fastenings to the underlying structure.
Charlie Vlk
----- Original Message -----
From: Bob Webber
To: CBQ@yahoogroups.com
Sent: Monday, April 19, 2010 8:58 AM
Subject: Re: [CBQ] Re: The Round-up
I guess one more try.
The P-S cars that had stainless sheathing had the sheathing attached
with clips. It wasn't welded to the side, it was simply an
applique. With that type of attachment, especially when the
attachment is on the flat, versicle car side, you will see water and
other fluids run down and under it. By the time the Q received
their cars that originally had sheathing of this type (from the
C&NW), the sheathing was gone.
THE ROUND-UP on the other hand, was sheathed completely in stainless,
which means that the shot-weld process was used to attach the various
panels to each other, and the panels themselves were welded, not
clipped, to the car side and ends. If you look at a stainless steel
car, it is (essentially) one unit from the bottom of one side, to the
other. So liquids can't (usually) get in behind the stainless
siding. When the unit is basically a one piece shell, water can't
get under it (easily). In order to get under this sort of
construction, fluids typically get in via the windows or other body
openings. If the shop is careful, and the openings are done with
care, and sealed after, the possibility is a lot less.
Compare that construction with the Wabash-built "stainless" cars (one
of which was the Busch PV). Those cars were sheathed but not
welded. The result was a (relative to THE ROUND-UP) failure, as
fluids got behind and the cars were in less than optimum condition
relatively quickly.
The Q's Aurora shops were one of the more - if not the most -
proficient railroad shop in working with stainless. They had already
rebuilt several cars that would otherwise be totaled, built the
pattern domes, sheathed the Zephyr backup Hudsons, and generally
could do as well as Red Lion in terms of construction with
stainless. I haven't heard of the pattern domes leaking, if any car
the Q made would be susceptible to that, it was these cars (due to
the location of the cuts (roof) and the flexing of the car in that area).
At 08:16 AM 4/19/2010, you wrote:
>Since it is a stainless steel sheathed car, how has it held up
>regarding rusting underneath the sheathing?
Bob Webber
[Non-text portions of this message have been removed]
[Non-text portions of this message have been removed]
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