A 7-wide Center Beam car, design inspired by my good friends James Mathis and Jake McKee.
About this creation
By standing on the shoulders of giants I created a Center Beam lumber car.
Clearly Jake McKee and James Mathis came up with the oval opening that inspired
me to build this model (see here
Their instructions can be found at BricksOnTheBrain.
Conan and J-1 from GMLTC had built a center
beam (lower right) as well, that preceded this design. And I'm sure that
there are others, sorry for any omissions, it's hard to keep track!
Some of the obstacles left to solve were, creating and mounting the center
"beam" and centering the trucks on a 7 wide platform. The ropes are only
decorations, they are not structurally needed.
Creating the center beam:
I used 2 - 1x8x2
arches to create each of the 5 oval opening. They are held together by
inserting a 4 stud axle into either 1x1x2 end of the arch (see here
for related details). In order to space them properly I had to add plates
and/or bricks and then a tile to the top of each arch.
Mounting the center beam:
The arch assemblies are seated on their sides in a 32 stud long channel created
by 2 rows of 1x2 thin wall panels. They are held in place on the top by a row of
90-degree brackets. This alternating row of brackets creates a nice 1 stud
channel and can be strengthened on 3 sides (from McKee/Mathis design) .
Centering the trucks on a 7 wide platform.
Trying to keep the deck of the train car as thin as possible made it tough to
find a solution to centering the bogie. After many attempts a 1x8
technic plate with holes in the end stud positions worked the best.