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Re: How can a novice tell if a locomotive has been superheated?

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bcp

January 03, 2020 09:47PM

Registered: 16 years ago
Posts: 5,005

WP&YR 69 was built superheated.

The slide valves with superheating is the reason the BP was only 160lbs.

I thought it would be interesting to see how powerful it would have been with higher boiler pressures like other late NG locomotives.

Here is 69's tractive effort at 3 higher pressures, using Baldwin's formula.

((180 x .85) x (21 x 21) x 22 / 42 = 35343 lbs

((190 x .85) x (21 x 21) x 22) /42 = 37306.5 lbs

((200 x .85) x (21 x 21) X 22) /42 = 39270 lbs

Bruce

Edited 3 time(s). Last edit at 01/03/2020 09:52PM by bcp.

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Subject	Author	Posted
How can a novice tell if a locomotive has been superheated?	kcsivils	January 03, 2020 04:00PM
Re: How can a novice tell if a locomotive has been superheated?	James	January 03, 2020 04:36PM
Re: How can a novice tell if a locomotive has been superheated?	Will Gant	January 03, 2020 09:38PM
Re: How can a novice tell if a locomotive has been superheated?	bcp	January 03, 2020 09:47PM
Re: How can a novice tell if a locomotive has been superheated?	Will Gant	January 03, 2020 10:26PM
Re: How can a novice tell if a locomotive has been superheated?	James	January 03, 2020 11:37PM
Re: How can a novice tell if a locomotive has been superheated?	Kelly Anderson	January 04, 2020 06:21AM

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

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