Hi All,
A few additions to Bob's post. See below.
On Sep 4, 2012, at 5:29 PM, adguytrains wrote:
>
> All...
> As requested, I have posted several albums in the Photos Section related to
> passenger car underbody layouts and building The Supply Car kits.
>
...
>
> Somehow I left off the APWS water tanks from the parts list. Two sizes are
> available (large & small) from The Supply Car. While there is no proper APWS
> water tank available for the BUDD cars, I use the large tank as a stand in.
> The two tanks are correct for ACF & P/S cars. The large water tank should be
> used for all sleepers, diners and lounge cars. The small water tank should
> be used for coaches and other less demanding cars.
>
APWS is short for Air Pressure Water System. This was the potable water in the
car. There was a large tank for the water and small pressure tank "raise" the
water. The actual tank was usually stainless steel and covered by a steel
casing. In some of the Budd drawings it appears that their are two smaller
tanks covered by a single, larger casing. This may show up in some of the
drawings Bob has posted. I think one might be able to make a reasonable Budd
APWS tank casing by cutting the large TSC water tank off by a band or two.
That statement will make sense when you are holding the casting in your hand.
As I said earlier, water tanks usually sat on the center sill of lightweight
cars and are often hidden behind other equipment. With Budd built cars there
were often air tanks in front of the water tank, so it can make the shape
difficult to distinguish. There is a dining car at Steamtown that has a water
tank casing that is narrow like the small TSC part, but is 20 feet long, so you
would need two of Bob M's parts to model that one.
> The Supply Car provides resin castings for 3 types of A/C units. The western
> roads used Waukesha A/C units in various models. These were often propane
> powered.
>
I believe all Waukesha units were propane powered, but never say "all". Most
passenger cars had some form of electromechanical air conditioning.
Electricity for the AC unit and all other functions was drawn from a generator
that was powered by a car axel. Some cars had two smaller generators. One
powered off each truck. Note that in this case, "smaller" refers to the
capacity of the unit rather than its physical size.
This axel power generation , of course, made the car harder to pull. The
Waukesha Ice Engine was a propane powered AC unit that reduced drag as well as
working while the car was stationary if need be. Waukesha also made a unit
called the Enginator that was a propane powered generator that would further
reduce the drag required to pull the car. If you get a copy of the Pullman
Company List of Cars 1961(reprinted by Wayner in book form) it lists cars as
having a Waukesha single engine or a Waukesha two engine. The single engine
cars just have the Ice Engine. The two engine cars have both the Ice Engine
and the Enginator. Notes I took the other day indicate that some UP cars built
by Pullman, C&NW Pullman built cars, some CRI&P Pullman built cars, and some SP
cars, as mentioned by Bob, used the two engine set-up while the IC, some
CMStP&P cars, some SP&S cars, some NP cars, and the GM&O's "Culver White" used
the single engine. This list should not be considered exhaustive.
>The eastern roads shunned propane and use electro-mechanical types more often.
> The "Enginator" is a device that generates power for the various A/C units.
>Southern Pacific used a second one for generating car electricity as well.
>The Train Station parts (including the Enginator) shown on the diagram are
>available in HO, but can easily be made to work in S.
>
And, believe it or not, some railroads used steam to air condition their cars!
Without going into the physics of how that works, suffice to say that steam was
the HEP of an earlier era. Santa Fe was probably the most famous proponent of
steam ejector air conditioning, but the StL&SF, the MKT, and the CMStP&P all
used it to some extent.
> Find a photo or two of your specific cars to better understand how your
> railroad used these appliances. The air brake components (3), air tanks (2),
> battery boxes (2), water tanks and A/C components were all standard
> appliances, but their positioning varied by railroad.
>
I couldn't agree more. That's all the time I have for this tonight, so my post
on Empire State cars will have to wait until tomorrow. Sorry Ed.
> Please don't hesitate to contact me directly for assistance on finishing your
> cars. Have fun!
> Bob Hogan
>
Me too,
Jamie Bothwell
Bethlehem, PA
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