Denver, South Park and Pacific Railroad
Large Scale Models of DSP&P 2-6-6T Mason Bogies
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
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
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
image to capture larger image (0.75
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
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
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.
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
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.
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.
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
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
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.
“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,
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).
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.
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
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
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
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.
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
Midbar 1:22+/- Scale DSP&P Mason Bogies
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,
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
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
DSP&P 2-8-6T Masom Bogie #25 "Alpine", photos from David Fletcher's Master
DSP&P 2-6-6T Mason Bogie #12 "Como", photo from David Fletcher's Master
Three more shots of the scratchbuilt DSP&P 2-6-6T Mason Bogie #12
Two shots of the scratchbuilt DSP&P 2-6-6T Mason Bogie #8 "Lake
Handcrafted 1:11.25 Scale DSP&P
David Fletcher's plans
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