Aces High Bulletin Board
General Forums => Aircraft and Vehicles => Topic started by: agent 009 on February 03, 2006, 10:52:24 PM
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My P-38 neighbor said merlin threw oil. even showed me recent photos from an air show where a current Stang threw oil all over the front. But have not heard this same problem with Spit & it had merlin as well. Plumbing problem for Stang?
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Sure it wasn't just that particular aircraft?
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Yes.
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I want to see the specifics.... ie time and date, and aircraft.
Picture would be nice.
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I would venture to say that all piston aircraft engines leak oil to a certain extent, especially radials (in which you check the fuel and fill the oil). I know that the Merlin is a V-12, not a radial, but there will always be some oil blowby past the piston rings out the exhaust. It could possibly be that it's more evident on unpainted bare aluminum on Mustangs than on camoflagued Spitties. Just two cents from an A&P.
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There were big differences between the American Merlin & the British one. My neighbor flew 38 & p-40. said Stang & P-40 threw oil & motors blew up. Not heard this same prob for Spits.
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Originally posted by agent 009
There were big differences between the American Merlin & the British one. My neighbor flew 38 & p-40. said Stang & P-40 threw oil & motors blew up. Not heard this same prob for Spits.
So yer talking about Packard (License built) Merlins and NOT the Rolls-Royce Merlins? Or are you talking about Allisons (Stang as well and P-40)?
Karaya
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went to Oshkosh Wisconsin for the EAA Airventure few years back. IL-16 was present at that one, checked her out before her flight and then went back after flight, was amazed at the amount of oil puddled under her cowling on the ground post-flight.
has nothing to do with pony - spit merlin but had to share observation
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Packard merlins yes.
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Some big differences between Brit merlin & Packard one.
The Packard Motor Car Company undertook the latter and it was this version that was to power the legendary North American Mustang. However, unrecognized by many are the huge differences in the Packard built version. Packard manufactured some 57,000 Merlin engines, over a third of all Merlin production. From its earliest version the Merlin was clearly a precision, hand built work of engineering art constructed by some of the best British engineers. Even in its infancy the powerplant was built in small lots and had a string of design changes incorporated in an effort to squeeze performance and increase reliability in combat situations. The setback was this was not an engine designed for mass production, so in 1940, when the British Government turned to Packard for help with production of the Merlin some provisions had to be made.
In June 1940, Packard was requested to undertake the production of some 9000 Merlin XX engines. It took just three days for the company to respond positively but on that proviso that some modifications would be made to the powerplant to enable American accessories such as carburetors, fuel and vacuum pumps to be utilized. Packard then began the monumental task of organizing an engineering group to handle drawings and redesign for American production. In parallel Packard organized U.S. sources for carburetors, magnetos, spark plugs, and other accessories. Packard assigned some 200 personnel to the project and this included the draughtsmen who would undertake complete revisions of production drawings. At the outset the Packard engineers ran into problems, generally due to the fact that the engine was not designed for mass production. That the project was completed at all is testament to the determination and skill of those assigned the task.
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February 29, 1944 - Mechanical problems plagued the new Mustangs again. The P-51's ugly side reared its head. Mills' prop began to throw oil and his wing tanks wouldn't feed, Biel's cooling system and radio went out, Rafalovich couldn't get enough manifold pressure and his radio also quit, France, Chatterley and Smith couldn't catch up to the Group. All six had to abort. After finishing the uneventful mission, a bunch of disgruntled pilots met in the briefing room to hear a 354th FG pilot talk about the P-51's mechanical problems.
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Originally posted by agent 009
In June 1940, Packard was requested to undertake the production of some 9000 Merlin XX engines.
That is not the same as the V-1650-7 which powers the 51-D.
Learn to do better than cut and paste.
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Gotta do a bit of digging :)
Lots of photos of early Spits with oil collector rings added to the nose to keep the oil from streaking back to the canopy.
This Spit, which does have a Griffon in it, sure seems to have been leaking something that looks like oil on occasion.
Visit any warbird hanger and you'll generally find a pan under the engine somewhere to collect oil and other stuff leaking from it.
(http://www.onpoi.net/ah/pics/users/861_1139203025_dp845.jpg)
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Flyable F6F Hellcat at the AirZoo in Kalamazoo. notice the SQUARE OIL CATCH PAN ON THE FLOOR.
(http://i25.photobucket.com/albums/c62/Masherbrum/DSCF0048.jpg)
Karaya
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See Rule #4
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See Rule #4
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Originally posted by agent 009
See Rule #4
Bodhi's not an ass, he restores WWII aircraft for a LIVING.
Karaya
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See Rule #4
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See Rule #4
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"Lots of photos of early Spits with oil collector rings added to the nose to keep the oil from streaking back to the canopy."
Never seen them on Spits but many Hurris had them.
What was leaking? The gearbox or the prop control?
-C+
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Originally posted by Furball
See Rule #4
need a new rule: "banter between squaddies is not allowed" :D
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No added rule needed. Private banter between squad members have a place (i.e. private squad forums).
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Originally posted by Charge
"Lots of photos of early Spits with oil collector rings added to the nose to keep the oil from streaking back to the canopy."
Never seen them on Spits but many Hurris had them.
What was leaking? The gearbox or the prop control?
-C+
"Oil slinging from the constant speed propeller" is how it's described.
Image of the installation
(http://www.onpoi.net/ah/pics/users/861_1139326832_spitring.jpg)
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Oil breather vent below and behind the exhaust stack:
(http://www.littlefriends.co.uk/gallery/353g/sx-dbar.jpg)
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That one, reminded me of this one :)
Just a bit of oil leaking on that 51 just down from a flight with the 359th FG
(http://www.onpoi.net/ah/pics/users/861_1139330516_oilleak.jpg)