Aces High Bulletin Board
General Forums => Aircraft and Vehicles => Topic started by: Krusty on May 06, 2008, 04:56:14 PM
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When you have an oil leak, you can shut the engine off and save some oil. I assume the logic is the oil pump is stopped or something.
My question is: When the engine is running, WHILE the oil is leaking, does the oil leak any faster if you run on WEP vs full throttle? Is there any difference?
If so, does throttling back to cruise also reduce oil drain further?
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no
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It seems that oil leaks at the same rate when the engine is on at idle or WEP, and not at all when the engine is off. Might as well firewall it if you leave the engine on.
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i have tried it it dowent work at all i just wep up climb and head for the nearest airfield
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If the engine is off your not losing oil.
All other modes of flight.....Exxon Valdez.
Strip
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I concur, either have it totally off, or full bore...
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Had an interesting one last night: oil AND radiator hits.
Talk about sweating bullets while RTB!
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Had an interesting one last night: oil AND radiator hits.
Talk about sweating bullets while RTB!
Landed a Jug last night with oil hit, fuel hit, radiator hit, half my right wing missing, no right aileron, no right elevator, no rudder. Results of a collision with a B-25. Didn't get film of that one, but filmed a similar with all the same damage minus the oil fuel and radiator hits.
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Radiator hit in a Jug is quite a feat. :D
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Had an interesting one last night: oil AND radiator hits.
No problem, just go home on the other engine.
If both engines are affected, bounce back and forth on the engines until you make it home.
Doesn't everyone fly 38s? :aok
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Radiator hit in a Jug is quite a feat. :D
I flew right through another plane. SURVIVING was the feat. I think the radiator was out... I know my oil and fuel were hit, but I thought I lost radiator too.
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Like I said, quite a feat...
...once you consider it doesn't HAVE one.
:D
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:rofl :rofl :rofl :lol
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Maybe he means the Jug's cockpit heater...
Frostbitten toes ARE a scary though :noid
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How are most oil pumps set up on air craft? Are they mechanicaly linked or is there an external sump pump that runs by other means? Seems to me if its mechanicaly linked to the engine any at all, if the prop is turning, gears are turning, crank is tunring, and oil is being pumped out. So engine on or off engine off, shouldnt oil still leak out?
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Guess ir would depend on whether the hit was in a line or in the pan (I assume these engines HAVE a pan where most the oil sits) If it's in the pan, gonna leak out regardless
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I'm fairly certain all radial engines are 'dry sump' (no pan) and the oil is stored in an external tank. V's and inlines can be wet or dry sump, but I would assume dry sump would of been more common due to the weight savings (lack of a cast oil sump) and the ability to configure CG a little better by positioning the tank.
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Like I said, quite a feat...
...once you consider it doesn't HAVE one.
:D
I didn't think it did...:noid
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How are most oil pumps set up on air craft? Are they mechanicaly linked or is there an external sump pump that runs by other means? Seems to me if its mechanicaly linked to the engine any at all, if the prop is turning, gears are turning, crank is tunring, and oil is being pumped out. So engine on or off engine off, shouldnt oil still leak out?
All of the ones that I know of are gear driven. Bohdi's the best person to ask, since he works on Warbirds for a living. Perhaps he'll stick his head in here.
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I'm fairly certain all radial engines are 'dry sump' (no pan) and the oil is stored in an external tank. V's and inlines can be wet or dry sump, but I would assume dry sump would of been more common due to the weight savings (lack of a cast oil sump) and the ability to configure CG a little better by positioning the tank.
IIRC, on a PW-2800, the oil 'pan' was more like a 'tank'. I think it had a capacity of something like 25 gallons (according to my grandfather who worked close to thunderbolts, but focused on mustangs). I know it was positioned on the top side of the fuse, just behind the cylinders. The system was a constant cycle- hot oil coming into the tank, traveling down the fuse on either side to the oil coolers (there was a single one on each side), and then being fed to the cylinders.
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if shutting off the engine stops oil loss, then running a reduced RPM should (IMO) cause you to lose oil slower than WOT/WEP
that makes sense..
now if you lost oil even if the engine was totally off, then oil loss being equal despite engine rpm would make sense, since that would denote the rate of loss not being tied to the engine running or not..
but since off = no loss and on = loss then RPM should be a variable for the rate of loss.
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How are most oil pumps set up on air craft? Are they mechanicaly linked or is there an external sump pump that runs by other means? Seems to me if its mechanicaly linked to the engine any at all, if the prop is turning, gears are turning, crank is tunring, and oil is being pumped out. So engine on or off engine off, shouldnt oil still leak out?
Im not sure about all the aircraft in the game but know most have mechanical oil pumps.....as for oil only coming out when the engine is running would depend on where the engine was hit. If you have a hole in the oil pan/resevoir your losing all your oil running or not. if your hit in the heads then you will only lose oil while the engine is running, if it were an oil line then it would depend on where it is to detemine if it would leak when the engine is off.
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All of these arguments depend on if you're talking about reality or our game world.