WECX 801 is the Worlds Largest Railcar

Neat!  What does it do?

That is one huge car!  It's a schnabel car used to carry nuclear reactor containment vessels.

--Greg

The scratchbuilt model:

This O scale model railcar has 36 axles with a scale length of 231 feet over the couplers (with no load attached). Two identical sections have been built. The 2 sections are linked together using a drawbar when no load is attached. The O scale model is well balanced with a low center of gravity which allows it to track very well.  This O scale model is over 58 inches in length (without a load attached) making it one of the longest fully operating O scale models ever built. The model as shown is "linked" by a drawbar that connects both sections just like the prototype. With an 80 foot scale load it is over 6 feet in length!

A diagram of the 36 axle car is shown below.

OO OO OO OO OO OO OO OO OO [_____________] OO OO OO OO OO OO OO OO OO

The real car uses a series of span bolsters to equalize the loading on all the trucks.  From the photos I can not tell how this was done on the model. Were span bolsters used like on the real thing?

The scale model duplicates the span bolsters and scale dimensions so that the car itself can "snake" through a series of turnouts with ease.  It was exactly scaled from the prototype.  The only limitation is the overhang on curves which is exactly the same problem that the prototype car faces.

Your model shows very impressive work. You certainly now have a conversation piece.

Who built the O-scale modem?

The guy who built the O Scale model posted it here a couple of weeks ago.  He explains the details in his post.

This post makes it sound like pro hobby did it, that's what I was questioning.

An O scale Modem would be very small, much like an O scale cellular phone.

Andrew