Barin' It Over

(quoted from post at 13:10:38 09/22/18) Folks, the phrase "baring it over" originally derived from the steam engine era but was still spoken until the 1950s. I remember my Father speaking it.

Here's what it means.

Dean
Starting WWII German Submarine Diesel Engine
o 'run silent, run deep' with that engine going!

I'm pretty sure that some of the old Fairbanks-Morse very large diesels needed to have cylinders pistons in a specific position for air starting.
 
Most subs couldn't run their diesels
underwater.
When they dove they switched to battery
power and could "run silent, run deep"
albeit at much slower speeds and for
relaively short periods of time.
The snorkel was adapted to allow subs to
run their diesels at periscope depth but no
deeper.
Snorkels were a late war expedient
developed by most of the major navys.
 
We still use the term at our local rail road museum. We can go a few years without actually starting all of them so the ones that don't run some body will "bar it over" so nothing is rusting tight.
 
We have a locomotive at our museum with that engine and we don't do anything special to position pistons before starting it. Maybe it depends on the size.
 
(quoted from post at 17:35:05 09/22/18) We have a locomotive at our museum with that engine and we don't do anything special to position pistons before starting it. Maybe it depends on the size.
he one I had a bit of experience with was a 2 cyl 2 stroke & I suspect position was more important than with 6 cyl.
 
That term still is in use today. Worked at a oil refinery for 35 years until retired 3 years ago. We had a couple large Cooper-Bessmer positive displacement compressors from the 1930's that had to be "barred over" several times before starting them. This made sure there were no mechanical issues and most of all if you could bar it over there was no liquid in the cylinders. Liquid in the cylinders of positive displacement compressors tends to break things badly.
 
there is a distributor valve on the front of them that takes care of that. Just pre-lube, roll em over with the vent cocks open to clear em out then shut the vents and let 'er eat.
Ran 38D8 1/8 s on the Navy tugs.
 
The old WW II bombers and most aircraft were turned over by man power several rotations before trying to start. To make sure all was ok. I have a copy of an Army Air Core training film of the start up of a B-24. Every engine was turned over several times before starting. Joe, son of a B24 gunner.
 
Dad was a belly gunner on a B 24. 5th Army Air Force. Two years ago I talked to a man who taught gunnery school for B 24's in Texas.
 
(quoted from post at 20:14:16 09/22/18) The old WW II bombers and most aircraft were turned over by man power several rotations before trying to start. To make sure all was ok. I have a copy of an Army Air Core training film of the start up of a B-24. Every engine was turned over several times before starting. Joe, son of a B24 gunner.
o clear lower radial cylinders of oil accumulation.
 

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