S. Berliner, III's sbiii.com PRR Survivor Boxcab PRR DD1 #3936-3937 Page keywords = boxcab PRR DD1 3936 3937 Juniata ALCo GE IR I-R American Locomotive Company General Electric Ingersoll Rand EMD Electro motive oil electric diesel engine rail road museum Strasburg

Updated:   14 Mar 2014; 15:25 ET
[Page converted 12 Oct 2012; page created 23 Apr 2003;
    original AT&T Worldnet Website begun 30 May 1996.]
Update info on the top on ALL pages for your convenience.

URL:  http://sbiii.com/boxcabdd.html
[was at "home.att.net/~Berliner-Ultrasonics/boxcabdd.html"]

S. Berliner, III
Consultant in Ultrasonic Processing
"changing materials with high-intensity sound"

[consultation is on a fee basis]

Technical and Historical Writer, Oral Historian
Popularizer of Science and Technology
Rail, Auto, Air, Ordnance, and Model Enthusiast
Light-weight Linguist, Lay Minister, and Putative Philosopher

note - The vast bulk of my massive Web presence (over 485 pages) had been hosted by AT&T's WorldNet service since 30 May 1996; they dropped WorldNet service effective 31 Mar 2010 and I have been scrambling to transfer everything.  Everything's saved but all the links have to be changed, mostly by hand.  See my sbiii.com Transfer Page for any updates on this tedious process.

ALCoBlockLogo ALCoScriptLogo ALCoGearLogo


GELogo IRLogo

S. Berliner, III's


PRR Survivor Boxcab
1911 Class DD1 #3936-3937 Page

I-R 60-ton Demo

A new type of locomotive!
Ingersoll-Rand 1925 Demonstrator #9681
(later CNJ #1000)
(ALCo builders photo S-1484 - source uncertain;
possibly from 1980s AAR flyer)




Oil-Electric ("Diesel") Locomotives

(American Locomotive Company - General Electric - Ingersoll-Rand)

INDEX to Boxcabs Pages:

note-rt.gif   The primary Boxcabs Index has been moved to a separate page, together with links and credits.

Boxcab Help - A service for boxcab afficionados,
posting reasonable questions (at my sole discretion).

There are now more than seventy-five (75) BOXCAB pages;
see the full INDEX, now on a separate page.

[A new "bugaboo" has reared its ugly head - complexity of organization -
see COMPLEXITY on my main index page.]

  The Boxcabs Index Page.

Class DD1 #3936-3937

DD1s #3936 and #3937 at RRMPa in Strasburg


This page is unindexed - please scroll down.


and the


There are now separate pages for each AGEIR or similar surviving boxcab; the redundant material is being removed (very slowly).

note-rt.gif - This page is not finished; I wanted to put up the information and links but have a long way to go in all this!


A(a) (on Survivors Map) -

Paired Pennsylvania Railroad Class DD1 #3936-3937 at the Railroad Museum of Pennsylvania in Strasburg.  These twin, semi-permamently-coupled box motors were in very bad shape the last time I looked.

They were built in the Pennsy's Juniata Shops in Altoona in 1911 and were a gift of the Penn Central Corp. in Dec 1979.

The Museum also has Pennsylvania Railroad B1 #5690, Altoona, 1934, purchased in Apr 1973 from Penn Central Corp. (restored).


Power type:			Electric
Builder:			PRR Juniata Shops
Build date:			1911
AAR wheel arrangement.		2-B+B-2
Driver diameter:		72" (1,829mm)
Length:				64' 11" (19.8m) overall
Width:				10' 6" (3.2m)
Height:				14' 8" (4.5m)
Weight on drivers:		199,000 lb  (90,300kg)
Locomotive weight:		313,000 lb (142,000kg)
Electric system:		650V DC
Current collection method:	Third rail
Top speed:			80mph (130km/h)
Power output:			3,160hp (2,360kW) continuous
				4,260hp (3,180kW) maximum

Early (new?) DD1 #3998

DD1 Side Elevation Drawing

DD1 Chassis and Running Gear

DD1 #3937 Pickup Shoes

[Images in public domain - from Wikipedia]

As you can plainly see, the DD1 was basically a standard 4-4-0, without cylinders or boiler, and with a BIG 650VDC electric motor sitting on the chassis, main-rodded to a jackshaft and thence to the running gear!

They were handsome brutes until 1939 when, for the New York World's Fair, they lost their "brows" as a nod to streamlining; more's the pity.

DD1 Brows

[Strasburg - put 'em back!]

Oh!   Look at that front door window,  Never noticed that change before!

HA!  Look at the road number in #3936's headlight numberboard!  Notice also that there is NO numberplate in #3998's headlight but that there is a tiny one hidden outboard just under the brow; another little detail easily overlooked (as I did).

note-rt.gif - This page is not finished; I wanted to put up the information and links but have a long way to go in all this!


  What happens to all this when I DIE or (heaven forfend!) lose interest?  See LEGACY.

There are now more than seventy-five (75) BOXCAB pages;
see the full INDEX, now on a separate page.


See Copyright Notice on primary home page.

U.S.Flag U.S.Flag


THUMBS UP!  -  Support your local police, fire, and emergency personnel!

Contact S. Berliner, III

(Junk and unsigned e-mail and blind telephone messages will NOT be answered)

{Not inserted into the Boxcabs Tour sequence, yet.}

© Copyright S. Berliner, III - 2003, 2012, 2014  - all rights reserved.

Return to Top of Page