SER Q class
The SER Q class was a class of 0-4-4T steam locomotives of the South Eastern Railway. The class was designed by James Stirling and introduced in 1881.[1] These locomotives should not be confused with the later SR Q class 0-6-0.
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Rebuilding
The locomotives passed to the South Eastern and Chatham Railway in 1899 and 55 were rebuilt by Harry Wainwright to class Q1 between 1903 and 1919.
Numbering
Thirty-two unrebuilt locomotives survived into Southern Railway ownership on 1 January 1923 with random numbers between 6 and 424. All had been withdrawn by 1929.
Year | Quantity in service at start of year | Quantity withdrawn | Locomotive numbers | Notes |
---|---|---|---|---|
1925 | 32 | 1 | A346 | |
1926 | 31 | 15 | A40, A72, A73, A82, A135, A220, A237, A345, A352, A358, A360, A405, A417, A418, A422 | |
1927 | 16 | 11 | A6, A26, A136, A169, A235, A356, A399, A410, A414, A421, A424 | |
1928 | 5 | 3 | A23, A173, A401 | |
1929 | 2 | 2 | A349, A368 |
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gollark: ```python#!/usr/bin/env python3import subprocess, os, os.path, sys, argparse, datetimetimestamp = datetime.datetime.now().strftime("%Y-%m-%d_%H-%M-%S")print(timestamp)parser = argparse.ArgumentParser(description="do backups, probably")parser.add_argument("--encrypt", "-E", help="store backup in encrypted folder (please make sure it's unlocked)", action="store_true")parser.add_argument("--no-incremental", "-n", help="don't do incremental backup", action="store_true")parser.add_argument("--save_as", "-a", help="back up under different name")parser.add_argument("dir", help="directory to backup")args = parser.parse_args()incremental = not args.no_incrementalprint(args)srcdir = os.path.abspath(args.dir)outdir = os.path.join(os.path.dirname(os.path.abspath(sys.argv[0])), "encrypted/backups" if args.encrypt else "backups")safepath = (args.save_as or srcdir).lstrip("/").replace("/", "-").replace("_", "-")outpath = os.path.join(outdir, f"{safepath}_{timestamp}{'_incr' if incremental else ''}.tar.zst")snapshot = os.path.join(outdir, f"{safepath}.snapshot")snapargs = ["-g", snapshot] if incremental else []print(srcdir, outdir, outpath)tarproc = subprocess.Popen(["tar", "-c", "-v", "-C", os.path.dirname(srcdir), os.path.basename(srcdir)] + snapargs, stdout=subprocess.PIPE)zstproc = subprocess.Popen(["zstd", "-10", "-T0", "-o", outpath], stdin=tarproc.stdout)def assert_proc(x): if x.wait() != 0: print(f"warning: {x.args} failed")assert_proc(tarproc)assert_proc(zstproc)```efficiency™
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References
- Casserley & Johnston 1974, p. 42.
Bibliography
- Ahrons, E.L. (1926). The British Steam Railway Locomotive. Ian Allan.
- Casserley, H.C.; Johnston, S.W. (1974). Locomotives at the Grouping 1, Southern Railway. Ian Allan. ISBN 0-7110-0552-4.CS1 maint: ref=harv (link)
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