Official P51 and 109G10 oil leak tests

[Nath-BDP]

First of all theres a bug in the P51 where the oil meter goes past 0 and the engine keeps running, but here are the times and film with an oil leak for both aircraft:

P51D - 5 Minutes http://pobox2.zyan.com/~nath/films/p51oil.ahf

Bf109G10 - 30 seconds http://pobox2.zyan.com/~nath/films/G10Oil.ahf

I don't see how a P51 losses its oil so slowly compared to a Bf 109, they both have engines that are practically the same size.

Can someone with more knowledge on aircraft powerplants give a reasonable explanation or historical data that proves that the P51 should run for such a long time with an oil leak, compared to the 109?  If not I would hope Pyro fixes this ASAP.

Laters

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Nath_____
9./JG 54 "Grünherz"
 

"It felt as if an angel was pushing..."
-Reponse of Gen. Adolf Galland after flying the fourth prototype Me 262 in May 1943.

[This message has been edited by Nath-BDP (edited 12-02-2000).]

[SageFIN]

USAAF planes come with additional can of hair grease that can be used as a lubricant if the oil supply should run out. Also, as the German war industry was heavily suppressed due to Allied bombing they were forced to replase standard oil with lager beer. Lager is more runny and flows faster out of the holes, thus emptying the available supply rather fast.

This was the most reasonable and rational explanation that I could come up with in such a short notice.

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SageFIN

"I think I´ll believe in Gosh instead of God.  If you don´t
 believe in Gosh too, you´ll be darned to heck."
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[This message has been edited by SageFIN (edited 12-02-2000).]

[hazed-]

How many more times we gott say it?

It is an LW conspiricy!!  

it may be that the oil used by germany was far inferior /less refined or possibly the strange oil they produced from coal i believe.who knows but i bet thats what will be given as explanation.

hazed

[Dinger]

Turbolasers punch bigger holes  

[GRUNHERZ]

Hi

I really think oil cooler damage on all inline liquid cooled planes should be the same. maybe up to 20 or 30 seconds max time. I see nohing in the P51 design where its oil cooler damage run time is  10 times longer than a 109s. What basis in reality is there for this HTC? Wernt P51 nutorious for various coolant system damage vulnerability in RL combat. I just dont see why some planes are given such a tremendous combat advantage, based on apparently no evidence???
HTC??

thanks GRUNHERZ

[Jigster]

Most of the hipowered warplanes of WWII burned alot of oil.  

The longer the plane's endurance, the more oil it has to have available. Say a B-17, it has about 50 gallons of oil per engine, and can burn most of that off during a max endurance flight.

While it may not explain that large or difference (but then again I don't think oil leaks have a static length) it's a reality.

Given the combat radius and endurance of the two planes, the P-51 probably has a larger lubrication system altogather.

Course finding the oil capacity of both planes would tell you. It seems to make sense though, since most of the radial planes have enormous oil quantities, and run the longest with an oil hit in AH.

Just as the F4F and B-17 have the same engine, yet they nowhere near the same oil capacity, let alone comparing different engines.

[This message has been edited by Jigster (edited 12-02-2000).]

[chisel]

109G10- 11 gallon oil tank.

P51d -12 gallon oil tank.

Aircooled engines haul so much oil around for cooling purposes, and probably the higher tendancy to leak.

[Toad]

Maybe the liquid cooling itself is prolonging the run time?

Might be something in the respective pilot handbooks in the EP section under loss of oil pressure. Anyone have the manuals?

[Nashwan]

Anyone know how long the Spit runs with an oil leak? Should be similar to the Mustang. If not, there must be a problem.

[RAM]

 

Originally posted by Nashwan:
If not, there must be a problem.

If yes there is a bigger problem, with BOTH the Spit and P51...

or a smaller one with the 109.

BTW a Fw190A with an oil leak lasts for less than a minute. And it is a radial.

I know it well. It used to be my ride, yah know.

[Fishu]

109's engine werent from the top end reliability, but those sure didnt just stop running few seconds after oil hit.
I've read some stories told by 109 pilots that had some more and less bad cooling damages, but they were still able to fly for minutes.

190 is kind of amazing me as well, for radial..
Typhoon engine also quits running very quickly after cooling gets hit.

I wonder why this is so that most american planes flies longer with cooling damages, while planes from other countries drops from the skies almost instantly.
god bless the america.

[Lephturn]

Part of that is the high number of American planes that used the Pratt & Whitney RR Double Wasp series of radials.  We have three american fighters in AH, and two of them use that engine.  It was one of, if not the toughest engine in WWII, or so I've been told.

Kudos go to NathBDP for doing some tests.  <S> Nath, that's the right way to procede.  I agree that we need an explanation here.  That is a big difference.  Maybe the Pony had a really huge oil tank?  I can't imagine it would be that much bigger...

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Lephturn - Chief Trainer
A member of The Flying Pigs  http://www.flyingpigs.com
 
"A pig is a jolly companion, Boar, sow, barrow, or gilt --
A pig is a pal, who'll boost your morale, Though mountains may topple and tilt.
When they've blackballed, bamboozled, and burned you, When they've turned on you, Tory and Whig,
Though you may be thrown over by Tabby and Rover, You'll never go wrong with a pig, a pig,
You'll never go wrong with a pig!" -- Thomas Pynchon, "Gravity's Rainbow"

[Nashwan]

P51 had a 11.5 Imp gallon oil tank.

[This message has been edited by Nashwan (edited 12-03-2000).]

[-duma-]

 

Originally posted by Nashwan:
P51 had a 11.5 Imp gallon fuel tank.

And it could go all that way on that?

Wow. That's what I call fuel economy  

[Nashwan]

Ok, my mistake. Now corrected