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Tractive Effort Calculation

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Rich Muth

November 30, 2003 10:54AM

I came across this formula in one of my steam loco books dated 1921.
2
TE = .85 OP x d x s
_______________
D
Where OP = Boiler operating pressure
d = Diameter of cylinder
s = Stroke length
D = Driver diameter
I plugged in the numbers for K27's, K28's, K36's
and K37's and they all worked.
An interesting thing is that the only difference in tractive effort between a K36 and a K37 is due to the higher boiler operating pressure of the K37. All the other elements are equal!

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Subject	Author	Posted
Tractive Effort Calculation	Rich Muth	November 30, 2003 10:54AM
Re: Tractive Effort Calculation	Rich Muth	November 30, 2003 12:09PM
Here is a picture of the formula NM LINK	Bruce Pryor	November 30, 2003 09:57PM
Re: Tractive Effort Calculation	Robby Peartree	December 01, 2003 01:48PM

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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.

Tractive Effort Calculation

Tractive Effort Calculation

Re: Tractive Effort Calculation

Here is a picture of the formula *NM* *LINK*

Re: Tractive Effort Calculation

Here is a picture of the formula NM LINK