Rail roads and their tracks.

[bdhsfz6]

Not trying to come across wrong here, but the Challengers were 4-6-6-4 configurations. Union Pacific 3985 is an example.
Challenger No. 3985
Big Boys were 4-8-8-4 and originally slated to be known as Wasatch class, because of their intended route.
Both were built by ALCO.

Sorry. Left out the "&" between Challenger and Big Boy in my post.

Nice catch. I edited the error.

 

[the old grind]

Anybody ever see the Allegheny at/in the Henry Ford museum? It's still there. (2-6-6-6, Lima) Pics at the top of the page here:

Allegheny Steam Locomotive, 1941 - The Henry Ford

The Chesapeake & Ohio Railway's massive Allegheny, introduced in 1941, represents the peak of steam railroad technology. Among the largest and most powerful steam locomotives ever built, it weighed 1.2 million pounds with its tender and could generate 7,500 horsepower. Just 11 years later, C&O...

www.thehenryford.org

 

[MossRoad]

Anybody ever see the Allegheny at/in the Henry Ford museum? It's still there. (2-6-6-6, Lima) Pics at the top of the page here:

Allegheny Steam Locomotive, 1941 - The Henry Ford

The Chesapeake & Ohio Railway's massive Allegheny, introduced in 1941, represents the peak of steam railroad technology. Among the largest and most powerful steam locomotives ever built, it weighed 1.2 million pounds with its tender and could generate 7,500 horsepower. Just 11 years later, C&O...

www.thehenryford.org

I was just looking at that on-line a couple hours ago.

 

[ArlyA]

Anybody ever see the Allegheny at/in the Henry Ford museum? It's still there. (2-6-6-6, Lima) Pics at the top of the page here:

Allegheny Steam Locomotive, 1941 - The Henry Ford

The Chesapeake & Ohio Railway's massive Allegheny, introduced in 1941, represents the peak of steam railroad technology. Among the largest and most powerful steam locomotives ever built, it weighed 1.2 million pounds with its tender and could generate 7,500 horsepower. Just 11 years later, C&O...

www.thehenryford.org

I was at that museum but that was looooong time ago.

 

[ArlyA]

Here is a short video which is a sales video about articulated engines in North America.

 

[MossRoad]

 

[ArlyA]

This video is about the 1875 failure of a new bridge over the Mississippi river during the third train to cross it. No failure was found and it was rebuilt within 3 weeks exactly the same as before.

 

[MossRoad]

Yikes!

 

[kenmbz]

I love their test procedure of just loading up with live engines and conductors and waiting to see if it collapses
Could have just used loaded cars with flats to allow the loco to be fully across?

 

[ArlyA]

I love their test procedure of just loading up with live engines and conductors and waiting to see if it collapses
Could have just used loaded cars with flats to allow the loco to be fully across?

I thought they would have used heavily loaded cars and push them across 1st. Another mystery in my small mind was looking at the "after the collapse photos", how could it have been rebuilt in two weeks?? Among other mysteries....