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03-07-2014, 02:08 PM | #1 |
Junior Master Dwellar
Join Date: Dec 2009
Location: Buckinghamshire UK
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March 7th Steam's up!
On 3 July 1938, the A4 class locomotive Mallard raced down Stoke Bank at 126mph to set a new steam locomotive world speed record. That record still stands.
All six surviving A4s came together during 2013/14, in an event organised by the National Railway Museum, to celebrate the 75th anniversary of the record. Participating locos were: Mallard Sir Nigel Gresley Bittern Dwight D Eisenhower Dominion of Canada Union of South Africa Mallard 75 Google Images
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03-07-2014, 03:29 PM | #2 |
The future is unwritten
Join Date: Oct 2002
Posts: 71,105
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They were noisy, dirty, dangerous, high maintenance, temperamental, expensive, beautiful contraptions. Oh god, I love 'em.
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03-07-2014, 03:38 PM | #3 |
Junior Master Dwellar
Join Date: Dec 2009
Location: Buckinghamshire UK
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... and driving one at 126mph no doubt tested one's testicular fortitude.
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03-07-2014, 04:53 PM | #4 |
The future is unwritten
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The engineer had 26 years experience and a reputation for taking "calculated risks".
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03-07-2014, 05:20 PM | #5 |
Goon Squad Leader
Join Date: Nov 2004
Location: Seattle
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They are beautiful and awesome. I read the captions, and I challenge one of the statements that the streamlining of the engine made it possible to reach the high speeds. I think the streamlining of the engine, which is beautiful, makes a trifling contribution to the high speed of the locomotive. I do think the huge drive wheels were a major factor, as much as the proportionally huge balls as previously noted. I wonder what the run-out room was like (and how long was the train that made the record run) with no drag parachute to soak up the momentum.
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03-07-2014, 09:18 PM | #6 |
LONG LIVE KING ZIPPY! per Feetz
Join Date: Mar 2003
Location: Arkansas
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True ballz of steel , and stream lining the engine could ABSOLUTELY make a difference , may be small but a difference none the less ,
V look at the Golf ball dimpleing the caused drag or the rear vent on the olympic speed skaters just recently in the olympics
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03-07-2014, 10:03 PM | #7 | |
The future is unwritten
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Posts: 71,105
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Quote:
They claim when Gresley designed the A-4 series he did a lot of wind tunnel sculpting. It was a big departure from previous steam locomotive design and streamlining imperative as speed was one big objective from the start. He wanted to build locomotives to run over 100mph in daily service, although they were rarely called on to do that. But the Mallard was special, this engine got a couple extra tweaks like a double chimney and double Kylchap blastpipe, for better draughting and exhaust flow at speed. The Kylchap mixes steam with boiler exhaust in four stages to create a jet stream that sucks the exhaust out better at speed.
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03-08-2014, 05:53 AM | #8 |
Professor
Join Date: Oct 2006
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Those A4s look pretty freaking modern with the slope fronts. Cool.
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03-08-2014, 06:21 AM | #9 |
still says videotape
Join Date: Feb 2001
Posts: 26,813
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These are awesome!
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03-08-2014, 07:50 AM | #10 |
Junior Master Dwellar
Join Date: Dec 2009
Location: Buckinghamshire UK
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The competition designed by Sir William Stanier...
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03-08-2014, 10:06 PM | #11 |
The future is unwritten
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Damn, that's quite a metamorphosis.
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03-09-2014, 07:40 AM | #12 | |
Encroaching on your decrees
Join Date: Feb 2004
Location: An island within the south-west coast of Scotland
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Quote:
A bit like me, then Sent by thought transference
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Living it up on the edge ... of civilisation, within the southwest coast of |
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03-10-2014, 03:49 PM | #13 |
The Un-Tuckian
Join Date: Apr 2007
Location: South Central...KY that is
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We do loves us some Limey.
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03-11-2014, 04:59 AM | #14 |
polaroid of perfection
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All the Limeys are beloved by me.
(pulling rank because I've met them)
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03-11-2014, 06:28 AM | #15 |
Encroaching on your decrees
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And we all love you back, Sundae dearest!
Sent by thought transference
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