yellowbear

16 Jun 2017 88 views
 
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photoblog image On the Watercress line

On the Watercress line

Of all Richard Maunsell's designs for the Southern Railway his "Schools" Class V is without hesitation not only his most successful but without doubt one of the finest applications of British steam locomotive practice ever

 

With the new Lord Nelson class and King Arthur class engines maintaining the majority of express passenger services the operating department issued a requirement for an express passenger locomotive of intermediate power that would be able to operate on lines with severe restrictions such as the Tonbridge to Hastings and Chatham to Ramsgate lines. The initial reaction was to offer a cut down (3 cylindered 4 drivered) Lord Nelson. However this was not found to be practicable since the use of the Nelson's Belpaire firebox within a such a restricted loading gauge would severely impede the forward view from the cab. The solution was to use a shortened King Arthur pattern boiler but retaining the full late series N15/S15 firebox. The boiler operating pressure was 220 psi - 20 psi higher than a King Arthur. The end result more than exceeded expectations since the design proved to be extremely free steaming even with poor grades of coal and with remarkably low internal friction contributing to a tractive effort of 25120 lb - only 200 lb less than a King Arthur. With that power and only 42 tons adhesion weight the class required careful handling when starting from rest! 

 

 

Originally I was going to post an HDR version of this but realised it was really awful so the above is one of the original three pictures 

 

http://yellowbear.shutterchance.com/photoblog/550914.htm

On the Watercress line

Of all Richard Maunsell's designs for the Southern Railway his "Schools" Class V is without hesitation not only his most successful but without doubt one of the finest applications of British steam locomotive practice ever

 

With the new Lord Nelson class and King Arthur class engines maintaining the majority of express passenger services the operating department issued a requirement for an express passenger locomotive of intermediate power that would be able to operate on lines with severe restrictions such as the Tonbridge to Hastings and Chatham to Ramsgate lines. The initial reaction was to offer a cut down (3 cylindered 4 drivered) Lord Nelson. However this was not found to be practicable since the use of the Nelson's Belpaire firebox within a such a restricted loading gauge would severely impede the forward view from the cab. The solution was to use a shortened King Arthur pattern boiler but retaining the full late series N15/S15 firebox. The boiler operating pressure was 220 psi - 20 psi higher than a King Arthur. The end result more than exceeded expectations since the design proved to be extremely free steaming even with poor grades of coal and with remarkably low internal friction contributing to a tractive effort of 25120 lb - only 200 lb less than a King Arthur. With that power and only 42 tons adhesion weight the class required careful handling when starting from rest! 

 

 

Originally I was going to post an HDR version of this but realised it was really awful so the above is one of the original three pictures 

 

http://yellowbear.shutterchance.com/photoblog/550914.htm

comments (13)

  • Ray
  • Not in United States
  • 16 Jun 2017, 02:37
She is a fine-looking workhorse, Bill, and requires none of that fancy HDR nonsense to tart her up.
Bill Phillips: HDR was a disaster and she needs no tarting up!
I am dazzled by your knowledge...
Bill Phillips: Where would we be without the internet?
This is a very nice photo of a handsome beast
Bill Phillips: They have beautifully clean lines E
Definitely worth keeping spruced up, Bill, even without HDR. I love the green color.
Bill Phillips: The HDR version is awful
  • Chris
  • England
  • 16 Jun 2017, 06:18
Thank you for sparing us that dreadful HDR.

These locomotives were never common in our part of the world but a few were drafted west in their latter years. I remember seeing examples at Salisbury circa 1962 on stoppers to Templecombe..
Bill Phillips: Dreadful isn't it?

Never saw them in my train spotting days. They are a singularly handsome locomotive with lovely clean lines
  • Lisl
  • Europe
  • 16 Jun 2017, 06:58
A friend of mine bought shares in the Watercress Line when it re-opened
Bill Phillips: I am thinking of buying some shares in the Severn Valley Railway
  • Martine
  • France
  • 16 Jun 2017, 07:19
Superbe !
Bill Phillips: Thank you kindly Martine!
Yay Cheltenham, how fun.
Bill Phillips: Steady on old chap
  • Louis
  • South Africa
  • 16 Jun 2017, 09:09
"The end result more than exceeded expectations ...", so it went further than far.smile

It does look to be a great engine.
Bill Phillips: and it got there sooner than expected
  • Alan
  • Great Britain (UK)
  • 16 Jun 2017, 16:01
They were handsome machines as well.; far nicer than those funny "Great Way Round" locos smile
Bill Phillips: They were very handsome but I was brought up on GWR locos and they will always be my favourites
  • Anne
  • United Kingdom
  • 16 Jun 2017, 16:20
What a beauty!
Bill Phillips: She sure is Anne
Definitely posted the better version. What a lovely engine and the notes are so interesting, where I grew up we didn't see anything to do with the Southern apart from holiday train journeys to the south coast.
Bill Phillips: We had Southern engines in Exeter, but mainly WC/BB and Merchant Navy (which only came into Exeter Central. Don't recall ever seeing a school
  • Astrid
  • Netherlands
  • 17 Jun 2017, 07:05
I looked at the link and I do love this deep colours. What a 'monster' this is... positive that is...... smile

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