Plumbing a lubricator

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rhbroehl
Posts: 19
Joined: Sun Nov 25, 2018 7:58 pm
Location: Johnstown, Ohio

Plumbing a lubricator

Post by rhbroehl » Sun Feb 17, 2019 2:07 am

Hi,

We are building a LE 0-4-0 and have a question regarding the use/installation of a lubricator. We do not see anything in the prints we have regarding the use or plumbing so we are at a bit of a loss as to what to should use and how it is plumbed.

Thanks

Rob and Jacob

optigman
Posts: 117
Joined: Wed Jul 15, 2015 11:17 pm

Re: Plumbing a lubricator

Post by optigman » Sun Feb 17, 2019 3:32 am

Hydrostatic or mechanical lubricator?

rhbroehl
Posts: 19
Joined: Sun Nov 25, 2018 7:58 pm
Location: Johnstown, Ohio

Re: Plumbing a lubricator

Post by rhbroehl » Sun Feb 17, 2019 7:25 am

I really do not know. I was thinking the hydro since this is a smaller engine but that is just a guess.

optigman
Posts: 117
Joined: Wed Jul 15, 2015 11:17 pm

Re: Plumbing a lubricator

Post by optigman » Sun Feb 17, 2019 10:55 pm

If you are lubricating the driving cylinders you will most likely want a mechanical lubricator.

If you have a steam pump you would use a displacement type lubricator.

Mechanical lubricators are connected to valve rods or eccentrics mostly. The lube line is then attached to the steam input before it enters any area that would require lubrication such as slide / piston valves and the main cylinders ( some like to lubricate the ball valve throttle as well. The steam cylinder oil for mechanical lubricators should emulsify with the steam so all surfaces get coated with steam/oil mixture. If at all possible check valves should be installed where they can be easily serviced. If check valves are located in the smoke box they should not have o-rings as high smoke box temperatures will cause the o-ring to fail.

Displacement / hydrostatic lubricators are installed on the steam line (usually with a "T") directly before the pump or appliance requiring the lubrication. Non emulsifying steam cylinder oil should be used in displacement type lubricators as the oil should stay separate from the condensate and always remain on top of the water and not mix with the water. Water should be drained out and topped off with oil frequently.

10 Wheeler Rob
Posts: 1511
Joined: Tue Mar 21, 2006 2:44 pm
Location: East Hartford, CT

Re: Plumbing a lubricator

Post by 10 Wheeler Rob » Mon Feb 18, 2019 7:03 am

Your choices are to connect lubricator to each steam chest, supply line. Or to connect the oil line at one location as far up stream in the steam piping before the piping splits to each cylinder. If connecting to 2 locations you should have either a double ram mechanical lubrucator or two static lubrucators.

The mechanical lubrucators also require check valves at the connection location.

Rob

Pontiacguy1
Posts: 1148
Joined: Thu Apr 26, 2012 10:15 am
Location: Tennessee, USA

Re: Plumbing a lubricator

Post by Pontiacguy1 » Mon Feb 18, 2019 8:29 am

The LE 0-4-0 has 2.375" bore X 3" stroke cylinders. You will need a mechanical double-ram oil pump for your locomotive to keep it properly lubricated. Even though your locomotive is small, those are bigger cylinders than most of the locomotives out there running around.

rhbroehl
Posts: 19
Joined: Sun Nov 25, 2018 7:58 pm
Location: Johnstown, Ohio

Re: Plumbing a lubricator

Post by rhbroehl » Sat Feb 23, 2019 10:35 pm

Thanks for all the suggestions and help.

elm53
Posts: 171
Joined: Fri Jan 02, 2009 6:51 pm
Location: worcester,ma

Re: Plumbing a lubricator

Post by elm53 » Mon Feb 25, 2019 12:35 pm

Hydrostatic are just fine for cylinder lubrication. All the 3'gauge locomotives I used to fire on had hydrostatic lubricators. The less moving parts the better.
I

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