Skip to main content

in the 1940s, the AAR conducted tests on the (at the time) 10 degree curve, on the North Track at Cajon Station, to test stresses on curved rail.

 

The locomotives tested were an FEF 3 class from the Union Pacific, a GS-4 class from the Southern Pacific and a 3776 class 4-8-4 and a 5011 class 2-10-4 from the Santa Fe.

 

The 3776 had the same cylinder dimensions, boiler pressure and limited cutoff as the 2900s.

 

The same test train was accelerated multiple times over the same section of the route by each of the 4-8-4 locomotives

 

If the Santa Fe engine had that nominal 87000 lb TE it would be expected to accelerate the test train much faster than the other two 4-8-4s, but the UP FEF-3 was the consistent winner in the acceleration department.

 

Nick are these tests recounted somewhere in a book or web site?  Very interesting!!

https://m.youtube.com/watch?v=X3Gg8GmqU9E

This a video of Richard Casford's 7 1/2 Gauge 2926 located at Riverside Live Steamers, this a lot bigger than you think. This was built with three other units as a request by one person who wanted it so the builder Harry Haas built the three and charged for the parts and materials as well as the one to the buyer. This is just a beautiful loco. The other 2 , one is at LA live Steamers other one belonged to Chet Peterson, but it was converted to a UP and I do not know if it exists still. If the video does not play providing the link on top, search SANTA Fe 2926 Riverside Live Steamers and you will find it.

Last edited by SDIV Tim

Add Reply

Post
×
×
×
×
Link copied to your clipboard.
×
×