Talk:Caledonian Railway 721 Class

Page contents not supported in other languages.
From Wikipedia, the free encyclopedia

Variations[edit]

I am finding some conflicting information about the McIntosh 4-4-0s. According to Casserley and Johnston, the 139 Class had two variations:

  • LMS 1440-1444 had 165 lb pressure and 20" x 26" cylinders
  • LMS 1445-1460 had 170 lb pressure and 20.25" x 26" cylinders

According to Locomotives of the Caledonian Railway:

  • LMS 1440-1449 were 139 Class with Schmidt superheaters
  • LMS 1450-1460 were 43 Class with Robinson superheaters

Can anyone clarify this? Biscuittin (talk) 14:24, 20 June 2012 (UTC)[reply]

You've omitted a digit from the LMS numbers. Numbering, and the St Rollox order numbers, were as follows:
LMS Cal Order
14440 139 Y92 (part)
14441-4 132-5 Y97
14445-8, -, 14449 117-122 Y101
14450-5 43-48 Y105
14456-60 39-42, 123 Y109
Cal. 121 did not get a LMS number because it was scrapped in 1915 (Quintinshill).
  • Baxter, Bertram (1984). Baxter, David (ed.). British Locomotive Catalogue 1825-1923, volume 4: Scottish and remaining English Companies in the LMS Group. Ashbourne: Moorland Publishing. p. 87.
  • Cornwell, H.J. Campbell (1974). Forty Years of Caledonian Locomotives 1882-1922. Newton Abbot: David & Charles. pp. 137–140, 143, 188. ISBN 978-0-7153-6533-5.
Baxter divides these locos into two classes of 11: he places orders Y92, Y97 and Y101 into the 139 class, and orders Y105 & Y109 into the 43 class.
Cornwell describes these 22 superheated locos together, but divides them into three classes: 139 (Y92, Y97); 117 (Y101); 40 (Y105, Y109).
According to Baxter, the 139 class were "Cyls 19 x 26. As 140 class but fitted with Schmidt superheater, and piston valves."; the 43 class were "Cyls 20+1⁄2 x 26. As 139 class but with Robinson type superheaters and larger cylinders. WP 170 lbs/sq in."
Cornwell shows orders Y92 and Y97 as having a Schmidt superheater, 165 lb pressure and 20 inch cyls; order Y101 differed slightly, having 20+1⁄2 cyls (he notes that they are sometimes misquoted as 20+1⁄4). Orders Y105 and Y109 have Robinson sup. and 20+1⁄4 cyls. --Redrose64 (talk) 17:08, 24 June 2012 (UTC)[reply]

External links modified[edit]

Hello fellow Wikipedians,

I have just added archive links to one external link on Caledonian Railway 721 Class. Please take a moment to review my edit. If necessary, add {{cbignore}} after the link to keep me from modifying it. Alternatively, you can add {{nobots|deny=InternetArchiveBot}} to keep me off the page altogether. I made the following changes:

When you have finished reviewing my changes, please set the checked parameter below to true to let others know.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 18 January 2022).

  • If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
  • If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—cyberbot IITalk to my owner:Online 10:05, 26 February 2016 (UTC)[reply]

Retrieved from "https://en.wikipedia.org/w/index.php?title=Talk:Caledonian_Railway_721_Class&oldid=1200534369"