The W1 and the Fury

As of late i have had some trouble. I can't seem to find the top speed of the locomotives named. could someone help me?

 

A quick internet search shows that "Fury" never really left the "trials" of running in, as it had a burst tube shortly after completion so was sidelined for quite a while. It never entered full service and was then rebuilt as a conventional Royal Scot. ....So top speed probably never attempted, may have done in the 70's on trial????
The W1 was more successful and seemed to run in mainline service for some years before being rebuilt with a new A4 style boiler - and again running in regular service for several years....So top speed in the 90's??

 

My understanding is that the W1 as rebuilt in 1937 was regarded as a powerful rather than a fast loco due to its 20" (A1 Pacific type) cylinders with 8" piston valves.

 

Its probably also fair to say that the railways weren't particularly interested in top speed and didn't often set out to measure it.

 

With thar unique boiler, I suspect it surviving as late as it did says something for the regard in which it was held by railwaymen.

 

Also, the original Yarrow boiler was used until the 1950s as a steam generator, I believe, at the Stooperdale boiler shop in Darlington.

Richard.