Re: Followup N-35/N35a images - Early Linking 13 States images
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John King
The design of the AAR 1935 Standard Twin Hopper car was slightly revised around 1940 or 1941. The early version on B&O was N-35, the revised version was similar to the N-35A . One noticeable difference is the appearance of the side sill that angles up from the car body to the end sill (N-35) and the revised version that is level from the car body to the end sill (like the N-35A). The Atlas model represents the early version and the Kadee model represents the revised version built during the 1940's and 1950's.. Of course neither has the Duryea underframe of B&O cars but a side view of the early version looks like an N-35 and a side view of the N-35A is the revised version.
Curiously Atlas letters and numbers its B&O car as an N-35a when it closer to an an N-35. The end bracing on the Kadee model is different than what B&O used.
Bottom line is there is a noticeable difference between N-35 and N-35A .
Hopefully the above is confusing enough to prod the experts to chime in with more complete/precise information. Right now my flatbed scanner is not talking to my computer so I can't scan and post photos to show the difference.
John King.
-----Original Message-----
From: Edwin Kirstatter <q1xamacarthur1@...> To: main@baltimoreandohiorailroadlist.groups.io Sent: Wed, Oct 13, 2021 12:12 am Subject: Re: [BaltimoreAndOhioRailroadList] Followup N-35/N35a images - Early Linking 13 States images Looking at B&O Official Equipment Diagrams we find the Class N-35 built in 1940 and 1941, 50 Ton Steel Hoppers were built by Bethlehem Steel Co. and General American Transport, 1000 cars each with 9-Q trucks and Duryea Underframe.
The N-35A cars were built from 1944 to 1947 by Beth. Stl. Co., Pull. Std., A C & F, Ralston, and Pressed Steel. in 500 to 1000 batches with 9-T trucks and Duryea Underframe with type 1 single spring and AAR Z-26 Center Sills.
On Tue, Oct 12, 2021 at 7:45 PM Joe Nevin <jfnevin@...> wrote:
No, Bethlehem Steel built both classes. However, GATC also built N-35, and Pressed Steel, Ralston Steel, Pullman, and AC&F also built N-35a. I do not know the difference between the classes,but the N-35a was built to a modified speciation. Ed K.
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