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Cem,

Some pieces of this have been done. I have seen a rather nice mapping of the inputs to Stephenson's Rocket, and then the developments into Planet, Patentee, and long boiler types like the Bourbonnais, with early offshoots like the Bury-Norris-American family and Crampton types. Cannot currently remember where I saw it though...

Thereafter it gets so busy as to require many parallel lines of descent. Each design house would have its' own family tree. Some of these are available, a specific English example being RAH Weight's survey of the Doncaster (GN) development from 'little Sharpie' (not that far from a Patentee) to the Pacifics and smaller types which essentially saw out steam in the UK.

 

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QUOTE (neil_s_wood @ 18 Mar 2008, 21:52) <{POST_SNAPBACK}>Sounds good. Do you intend to publish this once completed?

It would make a good book.
It would indeed, but also I fear a very expensive one. There's also the question of how to organise the information. A German title which I was able to read in a University library many years ago (Welthistoriches Dampflokomotiv Technik or words to that effect!) had it all well organised in text form supported by diagrams to show the enabling technical developments from their point of origin, Stephenson's synthesis of the 'basic format' and all key developments thereafter. But would you attempt to cover every single strand? There's something like a thousand classes of railway company inside cylinder goods 0-6-0 in the UK alone, built over a century in an arc from Crewe to Ashford, and all recognisably alike in form from first to last.

 

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QUOTE (dbclass50 @ 20 Mar 2008, 09:41) <{POST_SNAPBACK}>At first glance I would have thought that was DRG50 !
Beyer Peacock building the DRG 50 design under contract I would imagine.