Friday, April 8, 2016

Friday Night Steam

We're off to Alberta, Canada tonight!



1392 Locomotive

Picture
Type: 4-6-0 Ten wheeler
Class: h-6-g
Built by: Locomotive Works, Montreal, Quebec, 1913
Length: 63 ft. 6 1/2 in.
Height: 14 ft. 10 1/2 in.
Width: 10' 8"
Cylinders: 22" diameter X 26" stroke
Boiler Pressure: 180 psi
Drive Wheel Diameter: 63 in.
Total Engine Weight: 86.5 tons (173,000 pounds)
Engine and Tender: 150 tons (297,000 pounds)
Haulage rating: 28%
Max. tractive effort: 30,560 lbs.
Water Capacity: 5,000 gallons
Oil capacity: 3,000 gallons
Serial Number: 52649

Locomotives of this class were originally used for passenger service and were among the first to operate into Edmonton on the Canadian Northern Railway. They were the workhorse locomotives that helped to open up the Prairies.

Superseded by heavier and faster locomotives on mainline service, 1392 was one of a group of locomotives that continued performing mixed and way freight duties for the CNR until the general retirement of all steam locomotives in the late 1950s.

As a branchline locomotive, 1392 was used in freight, mixed freight and passenger duties across the Canadian Northern and Canadian National Central and Western systems. In later years 1392 served on work trains and weed trains in Alberta. Retired in 1955, it was put on static display at the Edmonton Exhibition grounds.

Acquired by the Museum in 1970, Locomotive 1392 is one of the few operating steam locomotives in Canada, and has had a busy life in retirement. Among its credits:

  • Days of Heaven (1978)
  • Steam Expo '86 in Vancouver - by flatcar
  • "Bye Bye Blues" - movie directed by Anne Wheeler
  • "Jake and the Kid" - Episode 19, July 1996, on site.
  • Train operations on Museum property during long weekends
  • 2002 - "Monte Walsh", starring Tom Selleck - at Redwater AB.
  • 2005 - Alberta Centennial train - to Boyle and Waskatenau AB.
  • 2013 - 1392 celebrates its 100 anniversary

Picture
Interior of the restored firebox of 1392.

On Tractive Force and Horsepowerby Terry Wolfe, APRA Vice-President
Tractive Force (effort) is the power which the pistons of the engine are capable of exerting through the drive-wheels, to move the engine and train. The efficiency of the engine's traction is dependent upon the adhesion of the wheels to the rails; for, where the adhesion is insufficient, the pistons will slip the wheels, and no useful effect will result. To prevent this, the weight resting on the drivers must be about five times the power exerted by the pistons.

An easy calculation...................

d2 LpT= D

Where:T=Tractive force to the rails (%TE)d=diameter of the cylinder in inchesL=length of piston stroke in inchesD=diameter of the driving whels in inchesp=effective pressure on the piston in psi

Horse-power is the measure of the rate at which work is performed, and is equal to 33,000 pounds lifted one foot in one minute, or one pound lifted 33,000 feet in one minute, or one pound lifted 550 feet in one second; therefore, one horse-power equals 550 foot-pounds per second.

Calculation is:P x L x A x N
H.P= 33,000
P=effective pressure on the piston in psi
L=length of piston stroke in feet.A=area of the piston in square inches.N=number of strokes (four times the number of revolutions) per minute.

Or, by cancellation and substituting the diameter of the driving wheels, the formula can be rearranged as:C2 x S x P x (M.P.H.)H.P= D x 375 (personaly, I never liked thisformula!!)
C=diameter of cylinder in inches.
P=mean effective pressure at given speed.
S=length of stroke in inches.M. P. H.=miles per hour.D=diameter of driving wheels in inches.

Source: http://www.albertarailwaymuseum.com/cnr-prairie-mixed-freight-train.html#1392


Hmmmm....
 Maybe we should ask BW at Everybody Has To Be Somewhere to go for a ride and bring that neat camera of his along! :o)


8 comments:

  1. Thank you for posting this. It brought back memories of train trips taken as a child with my mother and sister to visit my grandmother. I love your Friday Night Steam posts.

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    1. Aren't we the lucky ones to remember those train rides!! I would alternate summer vacations between my Grandma's farm up in New Hampshire and My Aunt and Uncle's home in Florida.
      So glad you enjoy FNS! :o)

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  2. So, since the length of my feet are fixed. Then it follows that my gaining weight does not indicate I am getting fat, it indicates I am gaining Tractive Force.
    Very nice video. Filmed and edited well.

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    1. I'm gonna use your excuse from now on. I like it! :o)

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  3. Oh gawd.

    It's all fun and games until the steam tables come out. Anyone that thinks steam power is low tech, knuckle draggin monkey business...is right! Those formulas are okay but jeez Louise...you start playing with the properties of saturated and superheated steam and the math gets absolutely stupid. Enthalpy. Entropy...what kind of demented sinner even conceptualizes stuff like that?!?!?

    Please don't bring up the math again, CM. I got a case of PTSD from thermodynamics and still wake up with nightmares about flunked midterms! I just want to sit in my rubber room and look at the nice trains...

    ;)

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    Replies
    1. Ok, Glen, no more steam calculations. I don't understand it all either, but thought it was interesting and it did made sense - thus the weighted drive wheels. From now on I'll just post videos of the pwetty choo-choo twains for 'ya! :o)

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  4. I might have to do one better and go to Big Valley, Alberta and post the trains from there.

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  5. Thank you so much for posting this.This is my home town Train I go to every summer when it's running. :)

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