cotswold
Part of the e-furniture
Still testing the water
Posts: 307
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Post by cotswold on Mar 16, 2008 14:12:40 GMT
Does anyone have first hand experience of displacement lubricators or other lubrication systems where the rate of flow of the oil is monitored by watching the rate at which drops of oil rise through a fluid in a sight glass? On the basis of the assumption that the fluid is water, what (if anything) should be added to the water?
I gather that the main purpose of the additive is to increase the density of the water. I have even seen salt suggested but would be very reluctant to use that. An exhibitor at an exhibition told me that he used epsom salts (magnesium sulphate) and in the absence of any comment to the contrary, that is what I shall use. However, I'd like to hear other views. For example, I seem to remember a mention of soap.
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Post by mutley on Mar 16, 2008 16:31:41 GMT
I use glycerine.
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JohnP
Hi-poster
Posts: 186
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Post by JohnP on Mar 16, 2008 16:32:45 GMT
I think I've heard of gelatin being used.
If the idea is to increase the density then could you use ethylene glycol?
That's got a reasonably large molecule and is soluble in water, so I assume it would increase the density (isn't that how garages check antifreeze concentration).
JohnP
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JohnP
Hi-poster
Posts: 186
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Post by JohnP on Mar 16, 2008 16:33:32 GMT
Mutley replied as I was posting. I'm sure I meant glycerine, not gelatine!
JohnP
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Post by GWRdriver on Mar 16, 2008 18:09:29 GMT
I concur with JohnP . . . glycerine is what I've heard used.
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cotswold
Part of the e-furniture
Still testing the water
Posts: 307
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Post by cotswold on Mar 17, 2008 8:53:08 GMT
Thank you gentlemen.
Although the idea is new to me glycerine seems to be the consensus view. Apart from glycerine in the glasses and steam-oil in the tank are there any problems concerning of priming the system (e.g. air in the pipes) or other matters? Or is it just a case of waiting very patiently before the first drops of oil travel the length of the loco and arrive where they are meant to be? (I have been warned that takes a surprisingly long time!)
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Post by albert on Mar 17, 2008 9:33:41 GMT
Hello Cotswold,
When I was into loco's I used glycerine and at times (no glycerine)add some liquid Washing up soap.Priming is as fast as you like by turning up the oil control.Just do not let the oil tank empty.If this should happen fill oil tank run oil through system then change site glass contents.
Bye Albert.
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