Re: [CBQ] Re: Help me understand

["'John D. Mitchell, Jr.' cbqrr47@yahoo.com [CBQ]" <CBQ@yahoogroups.com>]

Yes, there was a lever to pull in the cab to open the cylinder cocks.

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From: "qutlx1@aol.com [CBQ]" <CBQ@yahoogroups.com>
To: CBQ@yahoogroups.com
Sent: Monday, April 18, 2016 10:23 PM
Subject: Re: [CBQ] Re: Help me understand

 

Thanks Greg, that explains why at the investigation the hogger  was asked if he knew about the drain cocks.
Was there a control in the cab for the drains or did one have to go to the cylinders and drain them ?

By the way the fireman was asked at the investigation how much water was in the glass and he stated 1/2 a glass.

Leo

On Apr 18, 2016, at 9:46 PM, graywolfs02@hotmail.com [CBQ] <CBQ@yahoogroups.com> wrote:

 

Hi Leo,

A short answer to start with: You can compress Gas (steam) but you cannot compress liquid (water)

After a loco stands for a while, any steam still in the cylinders cools and condenses back to water. When starting the engineer will open drain cocks on the cylinders to let the condensed water out then close them to keep the steam in to do its work.

Another thing that happens and what may have happened here is that the boiler was most likely full of water,and as they tipped over the hill and drifted down grade, the water in the boiler entered the steam dome (where the throttle valve is at) and when Eng Nelson opened the throttle instead of admitting steam to the cylinders, it let water in and as water cannot be compressed the mass of the engine and momentum, kept the side rods moving, even though the pistons for all intense purposes "stopped"....and "poof" bent rods.

Any others with further steam experience, please chime in.......................

Hope this helps Leo.


Greg K

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Posted by: "John D. Mitchell, Jr." <cbqrr47@yahoo.com>

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