D49/1 BR power rating
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D49/1 BR power rating
Hi. Can anyone inform me of the BR power rating that was applied to the D49/1 class? Many thanks.
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John B
- NBR D34 4-4-0 'Glen'
- Posts: 270
- Joined: Sun Oct 23, 2005 11:50 pm
- Location: New Zealand (ex Hornsea)
tigerkev,
My Observers book of Railway Locomotives (Published 1955 - revised 1960) gives the power classification as 4P. Route availability was classified as 8. I think the whole class was 4P as the D49/1 had Walschaerts outside valve gear and the D49/2 had rotary camshaft gear, the D49/3 comprised locos 62720-4 as built with Lentz oscillating cam poppet valves (From 1938 these locos were rebuilt as D49/1, the D49/4 was a rebuild of the D49/2 but with two inside cylinders of D11 pattern Stephenson gear and piston valves. None of these difference would have altered the basic Power classification.
Hope this helps?
John
My Observers book of Railway Locomotives (Published 1955 - revised 1960) gives the power classification as 4P. Route availability was classified as 8. I think the whole class was 4P as the D49/1 had Walschaerts outside valve gear and the D49/2 had rotary camshaft gear, the D49/3 comprised locos 62720-4 as built with Lentz oscillating cam poppet valves (From 1938 these locos were rebuilt as D49/1, the D49/4 was a rebuild of the D49/2 but with two inside cylinders of D11 pattern Stephenson gear and piston valves. None of these difference would have altered the basic Power classification.
Hope this helps?
John
John B