Hi All,
I wonder if anyone can help with this please. I’m trying to make the stencil for the oil tank markings but the info I’ve got is incomplete.
I know it’s “Oil capacity 61/2 galls & Air space 21/2 galls” but there are 2 lines which I don’t have the complete info for, these are ???????? – 270 Summer & ???????? – 170 Winter.
Anybody have any ideas etc.
Kind regards
Nigel (owner Sea King XV677)
By: bazv - 30th April 2014 at 23:10
Might be worth contacting the Helicopter museum at Weston super mud,and also there is an airworthy Sycamore in Austria !
rgds baz
By: TonyT - 30th April 2014 at 23:09
By: TonyT - 30th April 2014 at 23:02
Might be detergent oil, though not sure If they were using detergent oils in radials of the time
http://www.experimentalaircraft.info/homebuilt-aircraft/aeroshell-aviation-oil-2.php
By: bazv - 30th April 2014 at 22:44
Further to what Tony posted – could be OMD – 270 etc.
I have certainly used OMD – 370 (Chippie)
and OMD – 160 (Bulldog)
Hey but I was a Rigger and (even now) only reluctantly touch those enginey things LOL
Edit – and looking at Tony’s link – looks like it would be OM ; )
By: seaking677 - 30th April 2014 at 21:39
Hi Tony,
Many thanks for the info, just the ticket.
Kind regards
Nigel
By: TonyT - 30th April 2014 at 21:01
Nigel, best guess is it will be either use OM which is shorthand for Oil Mineral or Oil Mineral itself. As OM-170 and OM-270 were / are engine piston oil grades.. They relate to SAE 40 and SAE 50 Civi oil specs and you’d want a thinner oil for winter running..
See
http://www.legervoertuigen.com/data/nato/00001300.pdf
..
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April 30, 2014 at 6:29 pm