OK, I won't be getting to finishing these yet, but in response to a recent Facebook post and to help a modeling buddy, here's some detailed info on these locomotives and what I'm doing to model them.
The DER-1 locomotives were built for the NH starting in 1941. While there were 74 closely related locomotives built by Alco between 1939 and 1945 of the models DL-103b, 105, 107, and 109 (along with B-unit models DL-108 and 110), only 62 of model DL-109 were built, and 60 of those were for the New Haven Railroad.
I've been compiling information and documenting photos for an eventual Shoreliner article (by me, or anybody who would like help writing it). The information I've been able to glean is a little different from what's been published to date.
The New Haven simply called them by their road numbers (the 0700s) until 1944 when a new classification system was introduced at which point the DL-109s were designated DER-1 locomotives with the following sub classifications in the 1945 Description of Locomotives:
- DER-1 - 0700-0709
- DER-1a - 0710-0719
- DER-1b - 0720-0729
- DER-1c - 0730-0759
Between the 3/30 and 6/30 1949 Summary of Equipment documents the classifications changed:
- DER-1a 0700-0709
- DER-1b 0710-0749
- DER-1c 0750-0759
However, the 1949-1951 engine assignments differ and list them as:
- DER-1 - 0700-0709
- DER-1a - 0710-0719
- DER-1b - 0720-0759
But the Summary of Equipment documents classify them as:
- DER-1a - 0700-0709
- DER-1b - 0710-0749
- DER-1c - 0750-0759
So what is different between the classes? That I don't know. I have seen one drawing that identifies the clearance below the frame to be different between the DER-1 and other classes. The weight differs between some of the classes too.
Most of the differences are probably mechanical and not evident to modelers. What has me the most curious is that there were still 3 classes after they were all rebuilt, so obviously some differences remain (although the fact that the post-rebuild classifications are inconsistent between the engine assignments and equipment summaries is curious).
So I'll identify the locomotives by road number, rather than class to keep things simple here. I'm primarily focusing on how I'm modifying the Proto shells, but I'll point out a few issues with the Overland brass models as well. I don't have the Hallmark brass model, but the nose contour was so incorrect it's not one I would use as a base.
I'm not covering converting the Proto model to the rebuilt configuration. Dave Messer wrote an excellent article for Railroad Model Craftsman in the January 2006 issue. Joe Smith has a post about his conversion, which also includes modeling the new nose of 0727 as a B-unit. Of course, the easier option is to use the Overland Brass model, which is what I'm doing.
The original roofline has a series of vents that are mostly, but not quite, captured by the Proto 1000 model. Good photos that show the roof in detail are rare, unfortunately, so this is what I've been able to figure out. The original 10 locomotives did not have winterization hatches, but they were all added well before my era. Mike Redden updated his excellent Shapeways parts at my request so they now fit over the round fan housing on the model.
Version 1: 0700-0719
Some minor modifications are needed for this class of locomotives. I have not added the winterization hatches yet to these models, the first ten were delivered without them, but all received them long before my era:
0717 (1946 - although see below for the Hunter Green and Warm Orange scheme)
0704 (1945)0705 (1945)0706 (1944)07130714 (Nov 1945)
Verified with Silver Gray pinstripes
0719 (and most probably 0718)
0745-0759 delivered in this scheme
07000703 (1946, 1947)0704 (1946)
0707 (may be 0717, poor scan of photo)07080709071107120713071407160718
Naturally I would recommend that you model from photos, particularly if you can find one from the era you are modeling. 1949-50 provides the most variations, where all of the following can be found:
- Delivery Scheme
- Hunter Green with Dulux Gold pinstripes
- Hunter Green with Silver Gray pinstripes
- Hunter Green and Warm Orange
- Hunter Green and Warm Orange with rebuilt sides
- Modified Delivery Scheme with rebuilt sides
- Modified Delivery Scheme with road number on nose and windows
- 0722 with rebuilt sides in the Cranberry scheme (after May 18, 1949)
- 0700 - assigned to 131/136 post '49, and I know it was rebuilt/repainted in May of '49.
- 0703 - photographed on 131/136 in 1945, I'll use it through '48 in the silver gray pinstripes.
- 0707 - also assigned to 131/136 post '49, rebuilt September '49
- 0730 - assigned to 157 in 1949, rebuilt in June '48 so it should be the Hunter Green and Warm Orange.