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richard.goode(at)russiana
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 Posted: Mon May 17, 2010 8:43 am Post subject: Oil miracle |
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Didier’s oil level problem is common to any aircraft with a ”dry sump” system and a separate oil tank.
The only ACCURATE measurement for a Yaks oil level is when the engine is warm, and has run for at least 20 seconds at a speed above 60% to scavenge oil out of the engine into the tank, just before shutting down.
The other issue is that a low oil level in the tank means that the oil has gone into the engine through a slightly worn check valve in the oil pump.
There are various places that can go, but clearly it will try to go to the lowest place – i.e. into the bottom cylinders or the bottom intake tubes – in either case potential hydraulic lock.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Herefordshire
HR5 3LW
United Kingdom
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
[quote][b]
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tigeryak18t
Joined: 26 Sep 2009
Posts: 233
Location: PARIS FRANCE
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| Posted: Mon May 17, 2010 12:25 pm Post subject: Oil miracle |
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Thanks a lot Richard.
That's what I do on my 18t and I have no problem of oil...at the moment !!!
I'll try the same on the 52
kind regards
Diider
2010/5/17 Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)>
| Quote: |
Didier’s oil level problem is common to any aircraft with a ”dry sump” system and a separate oil tank.
The only ACCURATE measurement for a Yaks oil level is when the engine is warm, and has run for at least 20 seconds at a speed above 60% to scavenge oil out of the engine into the tank, just before shutting down.
The other issue is that a low oil level in the tank means that the oil has gone into the engine through a slightly worn check valve in the oil pump.
There are various places that can go, but clearly it will try to go to the lowest place – i.e. into the bottom cylinders or the bottom intake tubes – in either case potential hydraulic lock.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Herefordshire
HR5 3LW
United Kingdom
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
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et="_blank">http://www.matronics.com/Navigator?Yak-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
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--
Didier BLOUZARD
didier.blouzard(at)gmail.com (didier.blouzard(at)gmail.com)
0624243672
[quote][b]
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
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_________________
Didier Tiger YAK18T
Member of Commemorative Air Force
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