New Britain Station Main Site
Sunday, May 22, 2022
Visiting an Old Friend
Sunday, May 1, 2022
Walthers Heavyweights on 24" Radius
My main track minimum radius is 26" and 28" radius. When I first got the Walthers parlor cars for the 600-series conversion, which note on the package that they will navigate 24" radius curves, I was surprised to find that they didn't even like the 26" radius. They would get hung up because something is rubbing on the underframe, or occasionally derail. I found that they were reliable on about a 26.5" radius, but I wasn't going to be rebuilding the helixes, so it meant figuring out how to modify the cars.
Now that I've decided to utilize the Walthers curved turnout in one location, I need to get them to work with the advertised 24" radius since that's the radius of the inner leg of those turnouts. Otherwise, lazy or not, I'll need to handlay a replacement with a proper 26" radius. However, the cars would still require some tuning to run reliably.
Restrictions to Minimum Radius
As modelers, one of the biggest restricting factors we have to deal with is space. As a result, we have to use much sharper radius curves than the prototype would. In addition, due to manufacturing limitations, many of the operational parts of are cars are overscale. Regardless, it's typically longer cars, like passenger cars, that have issues navigating our model curves.
From a design standpoint, modelers prefer broader curves because they look better, especially with longer cars. The amount of visible overhang is particularly obvious with older layout design approaches, such as waist-high benchwork where you're always looking down. In my case, the 26" radius curves on the inner main track looks acceptable since the benchwork is high, and it will be even less of an issue as structures are built. The switch that I need to be concerned about operationally is just at the entrance to the helix. It's not a very visible location and appearance is a non-issue.
There are two things that can affect what the minimum radius is. One is that the corners of the car themselves touch, and force one or the other car off the rails. This is unusual but is easy to fix by using couplers with longer shanks. These cars are designed with a coupler box that moves toward the side of the car to effectively lengthen the draw, so that's not the limiting factor.
The second, and more common, is truck swing. A car without a center sill would be able to handle very sharp radius curves, whether it looked good or not. But most cars have center sills and, as the car gets longer, that sill restricts that truck swing more.
Modifying the Cars
In this case, there are four locations where there is contact between the trucks/wheels and underbody that are contributing to the problem. Since I don't want to remove the center sill above the truck entirely (leaving an unsightly open gap that's visible from the side), how much more swing we can get is limited.
The backs of the wheels (circled) touch the center sill just before the brake beam (arrow) does.
You can also see that the mounting screw is offset. This offset increases the truck swing against the center sill. Relocating the mounting hole to the center of the truck would help, but is a much more involved solution and thankfully we don't have to do that here.
Here we can see the notch that is cut in the center parts, and also the portion that is molded into the underframe as part of the bolster. The arrow points to the plastic centering spring.
Wednesday, April 20, 2022
600-series Coach Interiors
For the 600-series coach conversions, like the New Haven, I need to modify the interior and remove the rooms and parlor chairs and replace them with walk-over coach benches.
Before I get to how I'm detailing that, it probably helps to get there first...
Disassembling the Walthers Parlor Car
The model is ingeniously designed, and, except for a few screws and the windows, everything snaps together. There's an inner plastic frame and roof and sides simply snap in. To get the roof off I used a plastic painter's palette knife to pry the sides outward to free it. You can see the notches at the top of the false side, with the slots underneath them. That's where the roof attaches. The round holes are for small alignment pins on the car sides.
Building the Interior
I drew a center line, then marked out the aisle for reference: 23-3/4" from the plan, or 12" on either side is fine. Precision isn't necessary here since it's not going to be very visible from through the windows.
The women's saloon is on one end of the car and is 6' long. This is on the same side of the car as the car side that required the window arrangement to be modified.
At the other end, it is split into two parts; the lavatory is on the same side of the car as the women's, and the lavatory is on the opposite. These are both 4'-91/2" long. These are very close to the size of the Branchline lavatories so I just used those.
They consist of two pieces, but the partition is designed to fit into the Branchline side. I removed this long tab to make a simple partition.
Thursday, April 14, 2022
More Passenger Cars
Yeah, a lot more.
I was looking for some parts for the 600-series conversions, which led to me going through the passenger car parts that I have. Of course, that meant I started organizing and looking through other projects. Once something was out of the box...
It only made sense to look at several other projects in more detail to see what other parts I need to order.
Which lead to this:
You can look forward to some posts on the 7800-7950 series of rebuilt coaches (two in progress), a 60' baggage car with 15' mail compartment, and two 60' steel baggage cars in addition to the rest of the work on the four 600-series coach conversions. In all there are nine models in progress, and by the end of the month I should have everything I need to complete them.
I might as well, so I can bring them to the Prototype Meet this year. I might as well plan on a clinic too.
Monday, April 11, 2022
Amazing Finds
It still amazes me that after all these years that new information, photos, videos, etc. continue to crop up.
In a thread on the NHRHTA Forum, somebody had pointed out a video by Joe Landry that has footage of the New Haven in and around Franklin, MA. Obviously, I love to check these out just to see more footage of the NH in action, but I hadn't gotten around to checking it out until now. It includes some phenomenal color footage from the early to mid-'40s. Even more surprising was a couple of the subjects captured.
Here's a still I captured from a run-by of a passenger train headed by a DL-109 on September 9, 1942. It's great footage, but what's nice is that it's from an overpass so we get a good view of the roof details.
But what I didn't expect was that this unit in September 1942 had not received winterization hatches yet. The first ten units were delivered this way, and an article from 1943 indicated that the NH had determined (as reported by P.H. Hatch, Assistant Mechanical Engineer) immediately after the first locomotives was placed in service that they were needed. Locomotives 0700-0709 arrived on the New Haven between December 1941 and April 1942. The second group arrived from Alco with the winterization hatches installed, starting in July 1942. I'm not sure I've seen an in-service photo without them.
Shortly after this in the video was another pleasant surprise. Color footage of Alco No. 1500, one of the RS-2 demonstrators that was built in January 1947.
I've seen a number of photos of this locomotive and knew it had been tested on the New Haven (photographed in Waterbury, among other locations, if I recall). But I've never seen a color photo, much less a video.
The whole video is quite interesting, with lots of info and more fantastic footage, including the Comet.










































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