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TFS Trains HomeB&O Class P-13 Well Cars
13 April, 9 March 2018

Note: This drawing was started to see if I could help a project to build an HO and S Scale copy of the P-13 by Tom Greco and Ed Kirstatter.  The discussion can be read on the B&O Yahoo! group:

Note Two:  If you have more photographs or information you would like to share to improve this model and the available historical information, please get in touch!  The B&O group will be eager to learn it, and they have ties to the B&O historical society.  You can also contact me, Charles Sloane, at tfstrains@outlook.com.

13 April Update:  Please scroll down for some images from work on the brake wheel, a question that arose in some of the discussion.

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To support some of our B&O Yahoo! group guys, I started looking into what the inside of a B&O P-13 Well Car might look like.  This view of the drawing (still needs rivets and stuff) shows about all the photographic information available.

Simplified B&O P-13 Drawing 1927 Photo View
Figure 1 - View of B&O P-13 Well Car Matching 1927 Photo

Well not seeing the insides is fine to look at a photograph, but to build a reasonable copy for a model railroad project needs a little more.  The equipment diagram is available and provides some really important dimensions, and more construction clues.  Still lots is missing.  The images in Figure 2 show that a higher view photo will definitely help, but even more information is needed to build one of these.

Basic Deck View Combines Photo and Equipment Diagram Info
One Man's Educated Guess of What's Below the Deck
Figure 2 - These Images Show the Current Concept of What's Under the Deck

It helps having some basic understanding of strength of material, and structural forces.  Observing the construction of bridges and various railcars for examples helps a lot when trying to imagine what the design engineer was thinking.  And then taking clues from the visible structure conjure up suitable hidden structural replacements for what may have been in the original design.

These drawings can be an adventure.  Here is an oops changed into a no-oops.  This oops was discovered adding sample 33 inch wheels (done just sort-of for fun, well... obviously it should be done all the time, even for just-a-drawing).

Drawing OOPS! the Wheel Hits the Framing!
Figure 3 - Oops!!
Drawing No oops! the Wheel Clears the Framing!
Figure 4 - No-Oops (Yea)!!

13 April 2018:  Some work was done studying and locating the brake wheel on the car from the photographs.  Here is an overview of where the brake wheel seems to go (Figure 5):

Brake Wheel Location
Figure 5 - View Photo Located and Sized Brake Wheel

You may note the brake wheel design itself is just a stand-in, the real brake wheels seem to be dished up on one end, and down on the other.  So some effort was made to figure out what these wheels might be like.  For now, the best has been a modification of the swirled wheel design from photos provided by Ed Kirstatter from the O-48 project.  The improved design from that effort was dished up and down about two inches.  Here are photo-matched images from the drawing with the dished wheels in place (Figure 6):

Brake Wheel Dish Point Down Car End
Brake Wheel Dish Point Up Car End
Figure 6 - These Images Show the Dished Brake Wheel Design in Place



More later....

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