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Re: C-41 1126

August 21, 2018 01:42AM avatar
Down here the Loco number is the running gear not the Boiler. smiling smiley
excerpted from Wiki NZR AB class page here

The AB type boiler had a working pressure of 180psi, a standard across the type. These boilers were of standard construction, no matter which firm built them, and as such were interchangeable across any locomotives of the type. They were also similar to the boilers built for the WAB and WS class 4-6-4T tank locomotives in 1939 - in fact, the WAB boiler and AB boilers were the same, with those fitted to the WAB fitted with the necessary components to draw water from the locomotive's side tanks.

This type of boiler was also adapted for use on the Q and AA class 4-6-2 tender locomotives of 1901 and 1915 respectively when their original boilers wore out. In the case of the AA class, the boiler change was not necessitated by the condition of the boilers but due to the limitations of the original boilers. The replacement took place in the 1930s, and these locomotives gained new heights of reliability, before they were withdrawn in 1957 (at the same time as the Q class). All of these boilers were then put back into the AB class pool, and were reused on engines of that class.

In all, 6 separate classes used the standard AB boiler. When Q, AA and G class locomotives were scrapped in the 1950s, the boilers were overhauled to keep locomotives of A, AB, and WAB serviceable.
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Jeff Taylor August 18, 2018 11:49PM

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rninrvr August 19, 2018 12:50PM

C-41 1126

Kevin Cook August 19, 2018 02:08PM

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Casey Akin August 19, 2018 07:51PM

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nedsn3 August 20, 2018 06:47AM

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nedsn3 August 20, 2018 06:47AM

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Tomstp August 20, 2018 07:36AM

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Dirk Ramsey August 20, 2018 09:42PM

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Chris Walker August 21, 2018 01:42AM

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Herb Kelsey August 22, 2018 12:39AM

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drgwk37 August 19, 2018 02:29PM

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michael August 19, 2018 07:39PM

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cdaspit August 19, 2018 07:50PM

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Casey Akin August 19, 2018 07:53PM

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Tomstp August 19, 2018 09:25PM

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Casey Akin August 20, 2018 12:03AM

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Mark Huber August 20, 2018 04:43AM

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Casey Akin August 20, 2018 09:11PM



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