Please tell, what are the visible differences?
thank you, Graham
Graham,
The two main differences between Swindon and Crewe built locos which help in identification is in the position of the front end live wire warning flashes and whether or not there is a small bracket below the driver's and secondman's cab side windows.
Swindon - front end live wire warning flashes are placed noticeably lower than the "Crewe" position and in differing positions. No bracket below cab side windows.
Crewe - front end live wire warning flashes are generally placed almost directly below the top handrail. Bracket below cab side windows.
Compare the warning flash positions in the photos of Westerns 1H55 & 1C39.
For the cab side bracket, see the view of D1060 on the Laira scrap line.
Within the Swindon built batch there are several groups of differing positions for the warning flashes:-
1 - D1000, D1002, D1003.
2 - D1001.
3 - D1004-D1017.
4 - D1018-D1023.
5 - D1024-D1029.
Crewe built locos have their warning flashes in a more standardized position directly below the end of the top hand rail.
Once you start looking you can find a lot of detail differences which will narrow down and identify a particular Western.
Other detail differences that come to mind are the presence or not of headboard brackets, windscreen wiper position, windscreen wiper experiments, air vent modifications, sand box cover modifications, collision damage repairs, and then there are dents and scrapes from general service life.
Have a look through a few books, you will be surprised what differences you can pick out.
Roger