This is my combined Index Page for all my blog posts related to researching, designing, building, and operations on my HO scale model of the Southern Pacific's "Jawbone" Branch from Mojave to Owenyo.
|January 2021 3D CAD model of my "Jawbone" Branch concept in my shop/study space.|
Brief Overview of the Layout & Goals
My modeled version will focus on the northern end of the branch terminating at Owenyo with a couple of other stations north of Inyokern. The southern part of the branch was also worked by a regular heavy transfer run out of Mojave to the Trona Rwy interchange at Searles, often handling around 50 cars with two AC-class 'cab forwards'. I don't have the room to model Searles-Trona, nor the trains that ran there.
|Trona aerial 1941 - Tim N Lola Byrne Collection|
While I would have enjoyed modeling the Trona's small fleet of engines and associated cars, the plant at Trona, which would be nearly the size of my whole space, let alone the 50-car trains.
|SP 3237 switching at Bartlett circa 1950-1952 - photographer unknown Dani "Inad Akeb" Collection|
No, my layout will be focused on the three-times-a-week (six day) Owenyo Local, which went all the way from Mojave, 143 miles, to Owenyo and then returned the next day. The layout will also need to fulfill two other major goals:
- Provide the physical testing plant for equipment which will be placed in service at the La Mesa Club, in San Diego. This means curve radius, easements, mainline switches, vertical curves, etc all to club specs.
- When sceniced, provide good photography backgrounds for various models that I'm working on. - This may also involve a section of "Flex-scenery" in front of the bookcase, where I can have a narrow section of roadbed and set up various background flats, or white/green-screen backgrounds for the photos of pilot models for OwlMtModels products.
Index of Blog Posts:
(Click on photos below to follow the link to the post)
SP Jawbone Branch (Part 1) - Concept & Design
SP Jawbone Branch (Part 2) - Researching and Changing of the Plan
SP Jawbone Branch (Part 3) - Consists and More Bartlett Research
SP Jawbone Branch (Part 4) - Freight Car Roster
Buying the materials for the benchwork
Working out the logistics for the staging yards other details.
Historic movie film clip of Owenyo Local
Starting construction of the layout
Starting construction of the layout
... or at least how to cut out the sections
More research materials have surfaced for my modeling of Little Lake
No More Linnie!?
Design Changes to Owenyo
Where's the Foam Going?
A deeper dive into the buildings and track arrangements.
Transfer to the SPNG?!
Starting to assemble layout sections
Other planning issues.
Taking the next steps in assembling the layout structure.
A closer look at historical Timetable Passenger Operations
Employe Timetable Researching and Commentary
SP Jawbone Branch (Part 16) - Brackets, Pits & Diagonal Joints - Construction continues
Fabricating wall brackets
Cutting "Pits" in the top skin
Cutting complex joints for Owenyo #1 wye structure.
Upgrading Owenyo #2 with better bracing structure
Mojave Staging bracing strucutre
First Extruded Styrene Foam experience
Owenyo #1 module's removable wye construction starts
Wye Tail module test fitting of parts
MicroEngineering track and supplies arrive!
Secondary Bracing completed
Bracing and supports for wye "keel-spar" fabricated and installed
Modifications to the layout, getting closer to the photos!
Supply Train Arrives
Track Laying Tools
Track Laying Techniques
Wrapping Up the First Week of April
Details West Switch Kits
SP Track Standards
Laying Out Switch Geometry
Glue Down the Ties
Notching Ties for Rail Joiners
Point & Closure Rails
Multiple Switch Alignments
First Run! & Video
New 4000-4500K LED Lighting
Future Lighting Upgrades
Engine Spot details
Wye details, Derails?, East Tail Ramp
Water Tank details
Points and Throw-Bars
Switch Point Jig
SG-NG Transfer Ramp/Pit Switch
Switch to House Pocket Stub
West Wye Switch
I'll try to keep this page up to date on posts from the SP Jawbone Branch series as I post them.