How fast this one?
- Greg_Lewis
- Posts: 3021
- Joined: Wed Jan 15, 2003 2:44 pm
- Location: Fresno, CA
How fast this one?
I stumbled upon this photo a few weeks back. Check out the diameter of the driver and the throw of the crank. Looks scary to me. I think the driver is 8'4" in diameter.
Greg Lewis, Prop.
Eyeball Engineering — Home of the dull toolbit.
Our motto: "That looks about right."
Celebrating 35 years of turning perfectly good metal into bits of useless scrap.
Eyeball Engineering — Home of the dull toolbit.
Our motto: "That looks about right."
Celebrating 35 years of turning perfectly good metal into bits of useless scrap.
Re: How fast this one?
Ah a singleton! Good for flat British or European track only!
Live Steam Photography and more - gallery.mikemassee.com
Product Development and E-Commerce, Allen Models of Nevada
Product Development and E-Commerce, Allen Models of Nevada
Re: How fast this one?
...helluva way to save on wheel castings! Kind of reminds me of some old steam powered side wheeler boats. cb
Life is like a sewer...what you get out of it depends on what you put into it!
I don't walk on water...I just learned where some of the stepping stones are!
I love mankind...it's some of the people I can't stand!
I don't walk on water...I just learned where some of the stepping stones are!
I love mankind...it's some of the people I can't stand!
Re: How fast this one?
According to wiki a similar engine that has been preserved performed well.
"Cornwall was a famously successful high-speed passenger express engine of its period. Charles Rous-Marten (cited in [6]) reported an 1884 run from Crewe to Chester behind Cornwall (now far from new, and of antiquated design) at an average speed of 50.7 mph, reaching 70 mph down Whitmore bank. It remained in express service on the Liverpool-Manchester route until withdrawn in 1902. In 1925, Ahrons reports that it was still in service hauling the Mechanical Engineer's inspection coach.[2]
On final retirement, Cornwall was deliberately preserved, one of the first locomotives to be so treated."
http://en.wikipedia.org/wiki/LNWR_2-2-2_3020_Cornwall
"Cornwall was a famously successful high-speed passenger express engine of its period. Charles Rous-Marten (cited in [6]) reported an 1884 run from Crewe to Chester behind Cornwall (now far from new, and of antiquated design) at an average speed of 50.7 mph, reaching 70 mph down Whitmore bank. It remained in express service on the Liverpool-Manchester route until withdrawn in 1902. In 1925, Ahrons reports that it was still in service hauling the Mechanical Engineer's inspection coach.[2]
On final retirement, Cornwall was deliberately preserved, one of the first locomotives to be so treated."
http://en.wikipedia.org/wiki/LNWR_2-2-2_3020_Cornwall
Re: How fast this one?
I love the big singles. According to the tractive effort formula the single worked as well as a 2-6-2 as long as the rail could support the weight of the driver. The early days of technology are the most interesting.
Fred V
Pensacola, Fl.
Pensacola, Fl.
-
- Posts: 652
- Joined: Tue Oct 28, 2003 10:56 am
Re: How fast this one?
The "singles" of which the most famous is probably that designed by Stirling, gave very high speeds (for the times) with a low piston speed, which was thought to be important, and without the complications of coupled wheels.The latter were compared to a horse with its legs tied together, and was supposed to greatly increase the power losses.
(It may have been true given the technology of the day.)
The one disadvantage of the singles was that the limited adhesion meant that they could only haul a (comparatively) small load. Quite satisfactory, until train loads increased, carriages got heavier, etc.
The largest wheels were the 9ft (yes nine feet) ones on the Bristol & Exeter 4-2-4T's (a couple had 10ft wheels, but they were soon altered), and the last singles to be built were in 1899-1901.
Some remained in use until the late 1920's and one or two until the mid-1930's.
(It may have been true given the technology of the day.)
The one disadvantage of the singles was that the limited adhesion meant that they could only haul a (comparatively) small load. Quite satisfactory, until train loads increased, carriages got heavier, etc.
The largest wheels were the 9ft (yes nine feet) ones on the Bristol & Exeter 4-2-4T's (a couple had 10ft wheels, but they were soon altered), and the last singles to be built were in 1899-1901.
Some remained in use until the late 1920's and one or two until the mid-1930's.
http://www.alanstepney.info
Model Engineering, Steam and workshop pages.
Model Engineering, Steam and workshop pages.