Large Scale Models of DSP&P 2-6-6T Mason Bogies

Large Scale modeling of the DSP&P is not easy and ready-to-run, properly proportioned and decorated locomotives are rare in any scale. Fortunately, the Mason Bogie locomotives that have been available over the years are really quite faithful models. The Delton and Accucraft models are remarkable representations; the LGB version somewhat less so.

This page covers the 1:20, 1:22, and 1:24 scale locomotives that ran on my outdoor railway, with some comments on their peculiarities. A photo essay side-trip to some exquisite scratchbuilt Bogies is also covered here. Super-large scale 1:11 custom built models were added recently, with links to the original article. Some excellent photos of custom model details are HERE.


To be thoriugh, I have included a failed attempt by Midbar Locomotive Works to market a plastic version of a DSP&P Mason Bogie.

Below are the Mason Locomotive Works builder's photo, the Railway Age engraving,  and Evelyn Curro's wonderful art print of the well known DSP&P 2-6-6T Mason Bogie #15 "Breckenridge".



Engraving of DSP&P 2-6-6T Mason Bogie #15 "Breckenridge", originally published in "Railway Gazette" in 1879, reprinted in "Recent Locomotives" by Mathias Forney in 1886, and again in "Early American Locomotives" by John White Jr in 1972. Drawn from the builder's photo shown below.  Click on image to capture larger image (0.75 Mb)

Builder's Photo, taken in 1879, of DSP&P 2-6-6T Mason Bogie #15 "Breckenridge". The lettering was probably gold with red drop-shadow. The boiler was russia iron, probably light grey or blue, cab and tender box probably dark green or brown, brightwork polished brass. Photos could not be reproduced in magazines or newspapers until after 1890 when the duotone process was invented, so engravers were assigned to redraw photos, as shon above.

Reproductions of the Breckenridge engraving have been published to decorate office and home. This print shows some nice detail and can be found on eBay in a 20 inch wide format.

A series of art prints in "The American Rye of Evelyn Curro" appeared in 1972 and included this rendering of DSP&P #15 in red  with russia Iron boiler. Its bright red colour scheme was probably not authentic, but made for dramatic art.  This image may have been the inspiration for the 1983 Delton colour scheme on their 1:24 scale brass model, shown below, although sadly they didn't keep the iron colour on the boiler.


The Delton 1:24 Scale DSP&P Mason Bogie
Delton Locomotive Works (DLW) of Delton, Michigan produced the first large scale brass models of DSP&P 2-6-6T Mason Bogies, in 1:24 “H” scale, in 1983-84. The models were patterned after DSP&P #15 “Breckenridge”, the best known of the 14 “light” double truck locomotives that Mason Machine Works delivered to the DSP&P in 1879.

Delton's DSP&P #15 2-6-6T "Breckenridge" in the burgandy and red paint scheme, showing the many individual decals representing the pin-striped original. The red drop-shadow on the lettering is there, but doesn't photograph well..

This was the first group of brass models manufactured by Delton, in conjunction with RichArt Company of California. It was offered only as an electric powered 12 volt DC version. As on the original, the model’s power truck swivels under the boiler. The center drivers are blind and it has a small diamond smokestack matching the builder’s photo.

A total of 189 models were built, 140 in a somewhat garish red and burgundy, which was claimed to “closely match the paint color of the original Breckenridge”. I personally doubt this, but that is the story promoted in the DLW history in the hardcover reference book by Lenny Sloboda (Sloboda Publishing, Astor, Florida). Of the remaining 49 models, 10 were delivered in naked brass, the remainder in 5 different colour schemes, as documented in Sloboda’s book.

DSP&P 2-6-6T Mason Bogie #55 (originally #22 "Crested Butte"). Delton produced one brass model painted to match this photo.

The level of detail is excellent, but not quite as fine as the 2007 Accucraft version, partly because the DLW model is 1:24 instead of 1:20 scale. The finish is also excellent, with many tiny decals applied to represent the various flourishes and stripes. Domes and headlight are well done. There is no coal in the coal bunker. The side cab doors are spring loaded but the front cab doors are solid. Windows are not moveable.

Drivers and rear bogie are painted red and look quite nice this way. Accucraft’s versions have these items painted black. Photos have appeared online of burgundy-coloured models with the boiler repainted in russia Iron, giving a much more attractive image than the bright red boiler of the original DLW model.

An early advert for the Delton Mason Bogie, Garden Railays Magazine, Sep 1984

The original DLW locomotive was not “sound-ready” as this concept had not been developed at the time. It is relatively easy to add basic LGB-style sound sensors and an American steam sound module in the coal bunker. Full DCC sound might be more difficult due to lack of space.

VITAL STATISTICS: Delton DSP&P Mason Bogie #15 “Breckenridge”, 1:24 “H” Scale
Retail price: then $2000, now $1500 to $6000 range, depending on scarcity of colour scheme, and condition Model numbers: D2100 (naked brass), 2101 (red/burgundy), 2102 – 2106 (rare colours)
Weight: 9 pounds     Size: 19.5” long by 4.2” wide by 6.5” high Minimum radius: 2 feet
Power: 0 to 12 volt DC motor

Head shot of Delton's DSP&P #15 "Breckenridge" about to enter Glacier Tunnel on the author's outdoor railway, with the Express on the Highline above.

The Accucraft 1:20.3 Scale DSP&P Mason Bogies
Advertised in 2007, the first prototype of Accucraft’s 2-6-6T Mason Bogie, in 1:20.3 “F” scale, made an appearance online in the summer of 2009, with deliveries to customers occurring in late 2010. The models were patterned after builder’s photos and plans of the early “light” DSP&P Mason-built locomotives. This double truck design won the 1888 World's Fair prize for “Best Piece of Machinery” built in that decade.

Builder's Photo DSP&P #4 "San Juan", a 2-6-6T Mason Bogie, later renumbered DSP&P #41, Note the tender flare carries D.S.P. & P. R., not "R.R." as on later engines.

The models come in two liveries: a dark green version of DSP&P #4 “San Juan” and a chocolate brown DSP&P #6 “Tenmile”. Both have simulated russia Iron boilers and simulated ash or oak cabs with the exquisite arched windows. Both were available as electric or live-steam versions. David Fletcher’s initial artwork for these models is showm HERE and his plans for both engines were published in “The Bogies and the Loop” in July and September 2004. The full set of David's Mason Bogie Master-Class plams are HERE.

The body of the Accucraft model is built from heavy brass with steel drivers, side rods, and linkage. The engine swivels under the boiler and the center drivers are blind, just as on the full scale Mason Bogies that were delivered to the DSP&P in 1879. The level of detail is excellent, especially the Nesmith smokestack, domes, headlight, pilot, and rivet patterns. Paint and lettering, especially the stripes and decorative flourishes, are superb. All four doors are spring loaded and one window on each side slides open.

The final “R” of D.S.P.& P.R.R. is missing on the coal bunker flare on the “San Juan”, as on the Mason Machine Works builder’s photo. The second “R” is present on the “Tenmile” model,

The electric versions are sound-ready but not plug-and-play – there is a rat’s nest of open ended wires in the coal bunker and a brief reference to the colour codes in the maintenance manual. There is no coal in the coal bin, which lifts out to access the wiring harness. Coupler pockets are designed for link-and-pin fittings (not supplied).

DSP&P "Tenmile" and "San Juan", with Waycar
#60,  on the author's outdoor railway

I have no personal experience with the steam powered units. Online reports suggest 30 to 40 minute run–times, depending on loading and weather. There are some good videos of these steamers on YouTube. The engine has a single flue boiler, two cylinders with piston valves, sight glass, pressure gauge, safety valve, lubricator, Walschaerts valve gear, reverse lever, and throttle.

VITAL STATISTICS: Accucraft DSP&P Mason Bogie 2-6-6T, #4 and #6, 1:20.3 “F” Scale
Retail price: then and today, $2200 to $2500 range Quantity built: not known
Model numbers: AL87-751 and 752 for steam, AL88-751 and 752 for electric
Weight: 14 pounds            Size: 22.75” long by 4.65” wide by 8.0” high
Minimum radius: 4 feet     Power: 0 to 24 volt DC motor, or butane-fired steam

Accucraft's version of DSP&P #4 "San Juan"

Accucraft model of DSP&P #6 "Tenmile"


The LGB 1:22.6 Scale Forney, Masquerading as a DSP&P Mason Bogie
It is definitely an ODD addition to my DSP&P fleet as it is a model of a locomotive that DSP&P never owned. I refer of course to the LGB 21252 1:22.6 “G” scale version of an 0-4-4T Forney painted as DSP&P #2, named “South Park”. None of this is true to the prototype. DSP&P #2 was a Dawson and Bailey 4-4-0; none of the South Park’s locomotives were ever named “South Park”. And it's a Forney, mot a Mason Bogie. Oh well....

LGB's 0-4-4T "Mason Bogie", renumbered, as it appeared on the author's railway, I swapped the "too modern" headlights for more era-specific versions.

If you don’t count the drivers too carefully, you can imagine that #3 is a South Park Mason Bogie. A new number, name, smoke stack, and headlight would help the illusion (delusion?), as would a pilot truck. The factory installed sound system emits the European whistle that sounds like the death throes of a wounded mountain goat. The driving truck on this model swivels like a Mason Bogie, unlile most Forneys which had drivers fixed to the main locomotive frame.

The price was right and nothing else resembling a real Mason Bogie was available at the time, so this model passed for my first Mason, renumbered to represent DSP&P #3 – at least the number, if nothing else, is correct for a Bogie.

VITAL STATISTICS:  LGB 21252 0-4-4T Forney, 1:22.6 “G” Scale
Retail price: then $650, now $450 to $650   Number built as DSP&P: 2000 ? Ltd. Ed.
Weight: 7 pounds             Size:
16” long by 4.7” wide by 6.5” high
Minimum radius: 2 feet    Power: 0 to 16 volt DC motor

The Midbar 1:22+/- Scale DSP&P Mason Bogies
A model of a 2-6-6T DSP&P Mason Bogie and a Waycar were advertised in 1992 and 1993, manufactured by Midbar Locomotive Works. Price, scale, and construction materials were not stated. A photo caption in the Apr 1993 Outdoor Railroader indicates that the locomotive was based on an inexpensive plastic superstructure, probably the Echo toy train set, with a kitbashed Bachmann caboose (images from OR Dec 1992 and Apr 1993).  Based on this scant description, the level of detail could not match that of the Delton and Accucraft brass models described elsewhere on this page. The ads read "Patience Please" for the next two years and disappeared by 1996, so this Bogie may have been vapourware.



Some Handcrafted 1:20.3 Scale DSP&P Mason Bogies
David Fletcher put a great deal of time and effort into his online Master Class series on building large scale models of Mason Bogies. Here are a couple of samples from participants. See all of David's construction articles and drawings HERE.

DSP&P 2-8-6T Masom Bogie #25 "Alpine", photos from David Fletcher's Master Class webpages

DSP&P 2-6-6T Mason Bogie #12 "Como", photo from David Fletcher's Master Class webpages

Three more shots of the scratchbuilt DSP&P 2-6-6T Mason Bogie #12 "Como"

Two shots of the scratchbuilt DSP&P 2-6-6T Mason Bogie #8 "Lake City"

Handcrafted 1:11.25 Scale DSP&P Mason Bogies
David Fletcher's plans inspired Martin Rindlisbacher of Switzerland to build three DSP&P Mason Bogies in 1:11.25 scale running on 80 mm gauge track (known in Europe as Spur 80), representing 36 inch narrow gauge. The models are made entirely of wood with some brass detail parts, fully functional with remote control. One of Martin's photos is shown here. See the whole story at