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Masters-2002
Build a 2-6-6T / 0-6-6T Mason Bogie
An Adventure in 1:20.3
By David Fletcher
Chapter 5 - Tender Benders
Background – Construction
This is the final sub-assembly chapter. At the conclusion of this chapter,
you'll have all the main assemblies of the Mason Bogie built - effectively a
whole loco, without valve gear and pipework. This is also the final chapter
in which you can build Mason components without actually having the BBT chassis
on hand. From Chapter 6 onward, you will need to have the BBT chassis to complete
the model. Hopefully shortly after this chapter is on-line, we'll start to see
the BBT chassis distributed. When you receive your chassis, you can immediately
install the assemblies from Chapter 2 through to Chapter 5, and enjoy the instant
transformation from metal chassis to a completed Mason form.
Background - This month, Steve Conkle, long time MasterClass
member, model maker and supporter, has provided a unique insight into the history
of the Boston Revere, Beach and Lynn RR, an interurban line from Massachusetts
that owned the single largest collection of Mason Bogies. These bogies were
dramatically different from the Masons of the South Park, but were thoroughbreds
throughout, and represent the ultimate development of the Mason Bogie concept.
The Bogie roster was widely varied in types, sizes, and wheel arrangements,
and offers much scope to the Bogie model builder. After completing your South
Park 2-6-6Ts, or similar locos, do consider reviewing this chapter, and think
about building an early 0-4-4T Mason, or a high wheeler, 2-4-6 or 2-4-4T. This
article is top notch, and we are most thankful to Steve for his in depth research
in bringing the story of the BRB&L RR to us.
Steve will also be building a BRB&L Mason after his South Park 2-6-6T is
complete. For this reason, Steve and I have developed a set of CAD drawings
of BRB&L #4, a 2-4-6T that shares the majority of its components with that
of the Heavy South Park 2-6-6T. All the major assemblies are the same as the
Heavy 2-6-6T, but the boiler rides higher, atop the large two-axle chassis with
48" drivers. This loco is gorgeous!
For those interested in the Conkle/Fletch BRB&L 2-4-6T, refer to the PDF
links later in this intro.
Construction - This month we build the tender tank, hungry
boards and tender details. We also build that classic underslung firebox unit,
with bracing members to complete the subfloor structure of the Mason.
The Mason Bogie Archive
Keep reviewing the Mason Bogie Archive. http://www.ironhorse129.com/
The site is constantly being updated as more photos of Masons come in. Keep
searching your books, old photos and magazines, and send us any Mason Bogie
photos you might find that don't appear to be in the current archive. Also send
us pictures if your images are clearer than the many we have in the current
archive. E-mail the images as a jpg scan; 300 bit-per-inch images preferred.
We deliberately withheld the photographs of the BRB&L Masons, until Steve's
story went on line with this chapter. Should any of you find photos of BRB&L
Masons not shown in this chapter, please do send them in to Tom Farin for the
archive.
The Mason Bogie and Mason Era Paint Scheme Archive
Now a permanently part of this class is our historical paint scheme archive.
These colour schemes have been worked up by Jim Wilke, a professional railroad
historian. We are honoured to have Jim's support and advice in this project.
The colour schemes generally fall into two categories:
- Mason schemes - Those historically used by William Mason at different periods,
and his philosophy of elegance through the use of a limited pallet, including
a base colour that it is used throughout the loco.
- Period Schemes - Those used by William Mason and other builder's during
the 1870s period, but not necessarily used on Mason Bogies.
Please keep referring to the colour web site for up-dates:
http://www.frontiernet.net/~scottychaos/ON_LINE/
This site has been generously created, supported and updated by Scot Lawrence,
with web space provided by Tom Farin.
The MasterClass Forum
Please direct your discoveries, discussions and questions to our MasterClass
and Articles forum at myLargescale.com.
http://www.mylargescale.com/forum/forum.asp?FORUM_ID=46
Updated Mason PDF Options Drawings
OK time for an update! Way way way back in chapter 1 of this Masterclass, there
were six popular Mason Bogie options to choose from, with links to a collections
of PDF drawings that allowed you to down load the side view of these Mason Bogie
drawings at full size for a 1:20.3 model. The drawings were good and well proportioned,
but did not contain the fine detail that has since been revealed within the
chapters that followed. Here at the end of chapter 5, the whole Mason superstructure
is now fully detailed through the 5 chapters. I decided to take all the elemental
PDF drawings done through the chapters and insert those details back into the
chapter 1 side view drawings. What has emerged are highly detailed Mason Bogie
drawings that serve as an update of where you model has come from and where
it is going.
So at this time, please take down your chapter 1 side views and put them away.
They have served you well up to now, but it's time for you to down load your
Mason options again, and stick the new side view on your wall! Also, as this
Masterclass has shown time and again, this thing has the tendency to grow....really
grow! What was formerly 6 options, are now many more!
Download your Mason Options update now, Click on the relevant link:
Option1 - 1878 DSP&P, 'As Photographed' 2-6-6T
at the Mason plant - Short Tender only.
Option 2A & 2B - 1878 DSP&P 'As Built' and delivered
2-6-6T - Long and Short Tender options.
Option 3 - 1883-1885 DSP&P 2-6-6T #8 and #44,
arched windows and air brakes, Congdon Stacks.
Option 4A, 4B - 1883-1885 DSP&P 2-6-6T, Long
and Short Tenders, Congdon Stacks.
Option 4C - 1886-1889 DSP&P 2-6-6T #42 with
Diamond Stack.
Option 5 - 1877 NPC 0-6-6T Bully Boy, 'As Built'
Option 6 - 1880s NPC 0-6-6T Bully Boy, Modified.
Option 7 - 1878 Version AA Denny, 0-6-4T (Originally
0-4-4T built 1875).
Option 8 - 1880 DSP&P 'As Built' Big 2-8-6T.
Option 9 - 1874 NPC 0-4-4T 'San Rafael'. (developed
with Tom Farin).
Option 10 - 1875 Peach Bottom #3 0-6-6T 'As
Built'.
Option 11 - 1875 Mason Works Sample 'Taunton'
0-6-4T 'As Built'.
Option 12 - BRB&L #4 2-4-6T 'As Delivered'
(developed with Steve Conkle).
Option 13 - U I & E RR, 1875 0-6-6T 'Leviathan'
as built./ also good for New Bedford 0-6-6T 'WM Mason' (developed with Scot
Lawrence, kit bash of MC2002).
Please Note these Cad drawings were developed from the details in the MC2002
chapters. The details were developed from the 1:8 scale reconstructed engineering
drawings by Art Wallace in 1985. These drawings are dedicated to the DSP&P
light and heavy 2-6-6T only. As such, the DSP&P drawn options above are
the most accurate. All other options are developed from photos and using the
Mason technology in Art's drawings. Also all 6 wheel versions are based on the
BBT nom. 36" driver size. This makes the wheel size a tad small for the
DSP&P Masons, and a tad large for the AA Denny, Taunton and the Peach Bottom
#3. The BBT wheel sits snug in the middle of the Mason wheel sizes. The non
South Park Mason drawings are developed to create the correct look of the prototype
in the model, but could not be considered 100% accurate. Close, but not 100%.
We will most probably update the drawing set again at the conclusion of this
adventure.
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