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Uncataloged Rail King O Scale Santa Fe RSD-5 Diesel Locomotive Announced

August 11, 2023 - M.T.H. Electric Trains has announced an exclusive RailKing O Scale RSD-5 Diesel locomotive in Santa Fe livery for exclusive distribution by the Metropolitan Division of the TCA and M.T.H. Authorized Retailer Berwyn's Toy Trains. The locomotive will be available in two authentic cab numbers in very limited quantities on a first-come, first-served basis, with an anticipated arrival date of October 2023.

Item No. 30-21207-1 Santa Fe RSD-5 Diesel Engine With Proto-Sound 3.0
Car No. 2122
Early Order Price: $379.99 (Plus Freight)
Click HERE to order from METCA.

Item No. 30-21208-1 Santa Fe RSD-5 Diesel Engine With Proto-Sound 3.0
Car No. 2157
Early Order Price: $379.99 (Plus Freight)
Click HERE to order from Berwyn's.


The American Locomotive Company pioneered the multi-purpose "road switcher" design in 1941 with its 1000 hp RS-1. Alco's designers added a second, shorter hood to a basic switcher to make room for a steam boiler for passenger train heat. The short hood also afforded the crew additional accident protection. Smoother-riding trucks made Alco's new design suitable for the higher road speeds that would be daunting in a typical switcher.

In 1946, Alco cataloged the first six-axle version of its road switcher, the RSC-2. Designed for operation on the lighter rail found on branch lines and short lines, the engine used two more axles to spread out its weight. The trucks were a so-called "A1A" configuration: the two end axles had traction motors while the middle wheels were unpowered idlers.

In 1951, the Chicago and North Western asked Alco to build a six-axle version of its RS-3, this time with all axles powered. The body and the 1600 hp Alco 244 prime mover were the same as used in the RS-3, but the additional traction motors gave the new model RSD-4 stronger low-speed performance. The longer trucks were both smooth-riding and more suitable for lighter rail. The design proved to be a winner, and a dozen railroads purchased the RSD-4 and its near-identical twin, the RSD-5, which sported an improved GE generator.


Metropolitan Division of the TCA
Contact METCA

- OR -

Berwyn's Toys & Trains
7025 Ogden Avenue
Berwyn, IL 60402

MTH Archive Auction Scheduled

Cabin Fever Auctions will be conducting another auction of the official M.T.H. Archive Collection from M.T.H.'s 124,000 sq. ft. Maryland warehouse.

The latest auction is scheduled for August 14, 2023, and can be previewed online by visiting the auction preview listing.

or call 800-789-5068 or 610-587-8139

M.T.H. Electric Trains will be releasing the 2023 Premier O Scale General Electric U25B Diesel Locomotives in five different livery schemes this Winter. Each of these offerings is limited in production and expected to begin shipping to M.T.H. Authorized Retailers in January 2024.

Check out each of these offerings HERE.

These items are available to order from your local M.T.H. Authorized Retailer.

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