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Re: lbf. vs Tractive Effort

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Earl

September 16, 2020 11:24PM

Registered: 16 years ago
Posts: 7,452

Tractive Effort and Tractive Force are one and the same thing. Tractive Effort is a number created by a formula utilizing the boiler pressure, the size of the cylinders, and diameter of the drive wheels. The number derived can be used with other formulas to determine the amount tonnage a locomotive can start and pull on a particular grade around a certain curve.

.85 BP X CS X (CDXCD) / DD = Tractive Effort in lbs.

BP = Boiler Pressure in lbs/sq. in.
CS = Cylinder Stroke
CD = Cylinder Diameter
DD Driver Diameter

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Subject	Author	Posted
lbf. vs Tractive Effort	Joe Weigman	September 16, 2020 11:11PM
Re: lbf. vs Tractive Effort	Earl	September 16, 2020 11:24PM
Re: lbf. vs Tractive Effort	bcp	September 16, 2020 11:29PM
Re: lbf. vs Tractive Effort	CR BT Dispr	September 17, 2020 02:31AM
Re: lbf. vs Tractive Effort	James	September 17, 2020 03:15AM
Re: lbf. vs Tractive Effort	tgbcvr	September 17, 2020 05:05AM
Re: lbf. vs Tractive Effort	Joe Weigman	September 17, 2020 09:32AM
Re: lbf. vs Tractive Effort	James	September 17, 2020 12:20PM
Re: lbf. vs Tractive Effort	Mark Huber	September 17, 2020 11:21AM
Re: lbf. vs Tractive Effort	James	September 17, 2020 12:39PM
Re: lbf. vs Tractive Effort	Kelly Anderson	September 17, 2020 02:48PM
Re: lbf. vs Tractive Effort	Mark Huber	September 18, 2020 12:41AM
Re: lbf. vs Tractive Effort	Kelly Anderson	September 18, 2020 06:26AM
Re: lbf. vs Tractive Effort	Kevin Gilliam	September 20, 2020 03:25PM
Re: lbf. vs Tractive Effort	Samart	September 17, 2020 11:48AM
Re: lbf. vs Tractive Effort	Jeff Taylor	September 17, 2020 10:48PM
Re: lbf. vs Tractive Effort	Mark Huber	September 17, 2020 11:12PM
Re: lbf. vs Tractive Effort	rdamurphy	September 18, 2020 02:57PM
Re: lbf. vs Tractive Effort	Kelly Anderson	September 19, 2020 01:08PM
Re: lbf. vs Tractive Effort	Joe Weigman	September 19, 2020 08:58PM
Re: lbf. vs Tractive Effort	M Austin	September 20, 2020 07:21PM

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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.