drduncan Posted August 1, 2023 Share Posted August 1, 2023 I was looking at some of John Lewis’ additional info on GW 40ft composites on @kada33’s excellent website and noticed he had very helpfully noted the different dates of fitting first flat flame and then incandescent gas lights on the coaches. This set me wondering what if any were the physical differences that could be observed from outside the coach eg at the end or on the roof? Does anyone have photo references they can share showing the actual observable (and modelable (in 2 and 4mm scale) differences? Regards and thanks for any info, Duncan 1 Link to post Share on other sites More sharing options...
Miss Prism Posted August 1, 2023 Share Posted August 1, 2023 https://www.warwickshirerailways.com/gwr/gwrhj107.htm 1 1 2 Link to post Share on other sites More sharing options...
drduncan Posted August 1, 2023 Author Share Posted August 1, 2023 1 minute ago, Miss Prism said: https://www.warwickshirerailways.com/gwr/gwrhj107.htm Thanks! Very nice image. 2 different arrangements of gas lighting pipes but which is which? I’m assuming incandescent is 2 pipes… D Link to post Share on other sites More sharing options...
Miss Prism Posted August 1, 2023 Share Posted August 1, 2023 I always get the two mixed up, so usually resort to 'single pipe' and (the later) 'double pipe'! 1 Link to post Share on other sites More sharing options...
drduncan Posted August 1, 2023 Author Share Posted August 1, 2023 It also seems that the circular mounting plate (fir want of a better description) is larger and slightly thicker on the single pipe/fkag flame arrangement. D 1 Link to post Share on other sites More sharing options...
Miss Prism Posted August 1, 2023 Share Posted August 1, 2023 I've never noticed that. Thanks. Link to post Share on other sites More sharing options...
stevel Posted August 2, 2023 Share Posted August 2, 2023 What was the reason for the large circular mount?, was it to cover the hole from the previous oil lamps. whilst on the subject of lamps, can anyone point me in the direction of, the dimensions of the top cover of the oil, and gas lamps, i can't seem to find it anywhere. Stephen Link to post Share on other sites More sharing options...
Ian Smith Posted August 2, 2023 Share Posted August 2, 2023 (edited) My thoughts regarding the size of the mounting plate is that the larger size was necessary because the coaches were originally built with oil lighting (a much larger fitting) requiring a larger hole in the roof, so converted coaches needed the bigger plate to cover said hole. Unfortunately, when I built my coaches in 2mm I neglected to notice this, so all of my gas lit coaches (all single pipe) have a small plate. There we’re a couple of articles by John Lewis in early BRJ’s on coach lighting. I will see if I can find them as I know there were drawings included. Ian Edited August 2, 2023 by Ian Smith 1 Link to post Share on other sites More sharing options...
RMweb Premium magmouse Posted August 2, 2023 RMweb Premium Share Posted August 2, 2023 The John Lewis articles are in BRJ 13 and 16, and include cross-section drawings of both oil and gas lamps. Nick. 1 Link to post Share on other sites More sharing options...
stevel Posted August 2, 2023 Share Posted August 2, 2023 9 hours ago, magmouse said: The John Lewis articles are in BRJ 13 and 16, and include cross-section drawings of both oil and gas lamps. Nick. the earliest BRJ I have is 24, so before my collection started. Link to post Share on other sites More sharing options...
GWR1890-1908 Posted September 19, 2023 Share Posted September 19, 2023 Flat flame is single pipe and incandescent is two. Technically the latter is gas supply, and pilot light supply as far as I know. 1 1 Link to post Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now