Re: Driver size and speed

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trainrider47

November 25, 2017 10:55AM

Registered: 16 years ago
Posts: 2,195

The Brits reduced reciprocating mass by using 3 and 4 cylinder locos which had smaller and lighter pistons as well as lighter rods. Mallard, the Gresley A4 pacific that holds the world speed record was a 3 cylinder machine. This also allowed power impulses every 60 degrees instead of 90 degrees. Of course, this required inside motion and a crank axle which meant more complexity.

Michael Allen

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Subject	Author	Posted
Driver size and speed	kcsivils	November 24, 2017 12:19PM
Re: Driver size and speed	CharlieMcCandless	November 24, 2017 12:28PM
Re: Driver size and speed	kcsivils	November 24, 2017 01:11PM
Re: Driver size and speed	Tomstp	November 24, 2017 02:14PM
Re: Driver size and speed	trainrider47	November 24, 2017 02:25PM
Re: Driver size and speed	Brian Norden	November 24, 2017 08:11PM
Re: Driver size and speed	GeorgeGaskill	November 26, 2017 01:46AM
Re: Driver size and speed	Jim McKee	November 24, 2017 02:42PM
Re: Driver size and speed	Kelly Anderson	November 24, 2017 03:07PM
Re: Driver size and speed	Tom Moungovan	November 24, 2017 03:49PM
Re: Driver size and speed	Greg Scholl	November 24, 2017 03:51PM
Re: Driver size and speed	Johnson Barr	November 24, 2017 05:39PM
Re: Driver size and speed	Earl	November 24, 2017 06:57PM
Re: Driver size and speed	Russo Loco	November 25, 2017 01:39PM
Re: Driver size and speed	Chris Walker	November 25, 2017 02:09PM
Re: Driver size and speed	Brian Norden	November 25, 2017 05:08PM
Re: Driver size and speed	jim pallow	November 24, 2017 05:14PM
Boiler capacity	hank	November 25, 2017 09:15AM
Re: Driver size and speed	Earl	November 25, 2017 10:13AM
Re: Driver size and speed	trainrider47	November 25, 2017 10:55AM
Re: Driver size and speed	Dan Markoff	November 26, 2017 11:39AM

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488 stops for water at Los Pinos tank on closing day Oct. 1979. Photo courtesy Don Richter

The NGDF was started by Don Richter and is currently operated in his memory by Nathan Holmes and others. Others who have contributed to the upkeep of this board are (in no particular order): Charles McCandless, Everett Lueck, Ted Wilton, Cole Adams, James Bane, John Moellmer, Jon Bentz, Linn Moedinger, lloyd lehrer, Rod Jensen, John Craft, Steven Forney, Herb Kelsey, Bill Ramaley, Russ Sperry (El Russo Loco), Josh McNeal, John West, Jim Armstrong, Bob Bergstrom, Greg Scholl, Blake Forbes Doug van Veelen and Mark Fuller.