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10 Greatest Military Piston Engines Of All Time  
User currently offlineDougloid From , joined Dec 1969, posts, RR:
Posted (7 years 6 months 2 weeks 5 days 20 hours ago) and read 9231 times:

Getting in the spirit of this top ten thing.

Rolls Merlin/Packard V1650
Daimler Benz DB601
Allison V1710 (best sounding of the three)
Pratt & Whitney R2800
Curtiss Wright R1820
Napier Sabre
BMW 801
Bristol Hercules
Nakajima Sakae

And my favorite, the most beautiful engine of all time

the Napier Lion

10 replies: All unread, jump to last
 
User currently offlineL-188 From United States of America, joined Jul 1999, 29799 posts, RR: 58
Reply 1, posted (7 years 6 months 2 weeks 5 days 16 hours ago) and read 9208 times:

Nice list!

Quoting Dougloid (Thread starter):
Rolls Merlin/Packard V1650
Daimler Benz DB601
Allison V1710 (best sounding of the three)
Pratt & Whitney R2800
Curtiss Wright R1820
Napier Sabre
BMW 801
Bristol Hercules
Nakajima Sakae

I of course have to come up with my own  stirthepot 

10 Le-Rhone Made early WWI aviation possible.
9 Continental W-670-Powered a lot of trainers such as the Stearman. Stong enough to be used as a tank engine.
8 Gnome-Rhone 14R-French engine used extensively by the germans.
7 Curtis OX-5. The military service of this engine may have been short lived, but so many where produced they where a staple of the 1920/30's barnstorming era-Without the OX-5 there would have been no Jenny.
6. Wright R-1820 The reason a lot of B-17's made it home.
5, Pratt&Whitney R-1830 A very well balanced motor used in the B-24, PBY and others.
4. Wright R-1820 The reason a lot of B-17's made it home.
3, Wright R-3350-Best big motor up there, the first versions in the B-29 had heating problems, but in the AD-1 Skyraider, it was bulletproof.
2, Rolls-Royce Merlin-Argueably the best liquid cooled piston motor around
1, Pratt & Whitney R2800-IMHO the perfect piston engine use by P-47,P-61, TBM, F4U, F6F, F7F, F8F, B-26, A-26 and many other types.



OBAMA-WORST PRESIDENT EVER....Even SKOORB would be better.
User currently offlineL-188 From United States of America, joined Jul 1999, 29799 posts, RR: 58
Reply 2, posted (7 years 6 months 2 weeks 5 days 15 hours ago) and read 9197 times:

Ooops got a double on my list.

#4 would be the A series Continental motors that where used in WWII liasion aircraft such as the L-3 and L-4



OBAMA-WORST PRESIDENT EVER....Even SKOORB would be better.
User currently offlineRichardPrice From , joined Dec 1969, posts, RR:
Reply 3, posted (7 years 6 months 2 weeks 5 days 7 hours ago) and read 9150 times:

Quoting Dougloid (Thread starter):
Rolls Merlin/Packard V1650

This would be my number one choice, especially with all round performance and reliability.

Origionally it wasnt very reliable, and so Rolls Royce underwent a never before done reliability improvmeent program.

This consisted of taking random engines off the production line and running them at full power continuously until they broke. Then they were dismantaled to see what broke. That part was then redesigned and improved.

The program resulted in one of the most reliable piston engines in history.

It also saw service in tanks, and also surprisingly Spanish built Me Bf 109s!


User currently offlineDougloid From , joined Dec 1969, posts, RR:
Reply 4, posted (7 years 6 months 2 weeks 5 days 4 hours ago) and read 9122 times:

Quoting RichardPrice (Reply 3):
Quoting Dougloid (Thread starter):
Rolls Merlin/Packard V1650

This would be my number one choice, especially with all round performance and reliability.

Origionally it wasnt very reliable, and so Rolls Royce underwent a never before done reliability improvmeent program.

This consisted of taking random engines off the production line and running them at full power continuously until they broke. Then they were dismantaled to see what broke. That part was then redesigned and improved.

I'm a little partial to Wright Aeronautical because my old man worked there in Wood Ridge during the war as an engineer. He told me this story.

One night there was an engine running in the test cell. It had a multi pinion reduction gear set, and it was undergoing its Army Air Corps acceptance test which was a 150 hour run at full power. This was also with a cruise prop rather tan a test club, because it was for the AAC equivalent of a type certificate.

The technician who was minding the store was either reading a newspaper or sleeping because the reduction gear started coming unglued and they figured he had maybe two seconds to hit the kill switch but did not. The gearcare came apart at full tilt, the prop separated and went through the wall of the test cell, cartwheeled across the factory cutting pipes and wiring conduit and came to rest a couple hundred feet away.


User currently offlineFerrypilot From New Zealand, joined Sep 2006, 897 posts, RR: 3
Reply 5, posted (7 years 6 months 2 weeks 4 days 10 hours ago) and read 9051 times:

The Merlin has to be number 1 ...simply because so many great aircraft were great performers because they were equipped with it.
...Spitfire, Hurricane, Mosquito, Lancaster and others lost in the mists of time. A long time ago I knew a pilot who had flown the DeHavilland Hornet, which was a long range twin engine fighter derived from the Mosquito and equipped with late Mark contra rotating Merlin's that apparently imbued it with legendary performance. In the late 1940's it was very definitely right up there vie-ing to be the fastest production piston engine fighter of all time.
And of course there is the P51 which I believe still holds the piston engine speed record between New York and London. ...The record having stood since 1951 when Capt. Charles Blair flew at full power all the way and set a blistering time of 7hours 48mins. That record will stand forever. ...The Merlin is a legend.


User currently offlineScooter01 From Norway, joined Nov 2006, 1204 posts, RR: 8
Reply 6, posted (7 years 6 months 2 weeks 4 days 7 hours ago) and read 9023 times:
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Quoting Ferrypilot (Reply 5):

Capt. Charles Blair
...and on the way home he flew across the pole from Norway to Alaska.

For this he was named "Outstanding Aviator" by the Harmon Trophy people in 1951 trophy 

Capt. Blair was at the time a pilot with Pan Am, the plane was his own and the flight was to check out the use of stellar navigation on trans-polar flights, so technically this was not a military flight.
I don't know how many hours it took, but I remember reading that the plane was loaded with fuel and the engine was run on ultra lean setting.
But the fact remains; the Merlin was an engine you could trust.


Scooter

[Edited 2007-03-04 15:37:52]

[Edited 2007-03-04 15:40:58]


"We all have a girl and her name is nostalgia" - Hemingway
User currently offlineFerrypilot From New Zealand, joined Sep 2006, 897 posts, RR: 3
Reply 7, posted (7 years 6 months 2 weeks 3 days 23 hours ago) and read 8976 times:

On the New York - London record breaking flight Charles Blair said that he had flown with "max. continuous power" of 46"Hg. all the way and that the Merlin had functioned perfectly. ...The P51c Mustang N1202 and known as "Excalibur III" had a very non-standard fuel system and carried a staggering 856 U.S. gallons internally.

Quoting Scooter01 (Reply 6):
I don't know how many hours it took, but I remember reading that the plane was loaded with fuel and the engine was run on ultra lean setting.

Where as the New York to London sector had been a "balls out" run to break the record. The flight across the North Pole was intended to prove Blair's navigational theories and it was indeed flown at a normal cruise power setting as you have indicated, ...taking him 10 hours 27mins. to fly from Bardufoss in Norway straight over the North Pole to Fairbanks in Alaska.
Excalibur III is just visble above the 707 in the photo below :-

View Large View Medium
Click here for bigger photo!

Photo © Allen Yao



[Edited 2007-03-05 00:07:33]

User currently offlineSCAT15F From United States of America, joined Feb 2007, 402 posts, RR: 0
Reply 8, posted (7 years 6 months 2 weeks 3 days 15 hours ago) and read 8934 times:

Lycoming R-7750 (7000hp, intended for HK-1 Spruce Goose and B-35 flying wing)
P&W R-4360 Wasp Major (3800hp version and 4500hp turbo-compound)
Chrysler XV-2220 inverted V-16 2500hp
Allison V-1710
Wright R-3350 Turbo-compound, 3500hp
R-2800
RR Griffon
RR Merlin
DB-601
BMW-801


User currently offlineDougloid From , joined Dec 1969, posts, RR:
Reply 9, posted (7 years 6 months 2 weeks 3 days ago) and read 8858 times:

Quoting SCAT15F (Reply 8):
Lycoming R-7750 (7000hp, intended for HK-1 Spruce Goose and B-35 flying wing)
P&W R-4360 Wasp Major (3800hp version and 4500hp turbo-compound)
Chrysler XV-2220 inverted V-16 2500hp
Allison V-1710
Wright R-3350 Turbo-compound, 3500hp
R-2800
RR Griffon
RR Merlin
DB-601
BMW-801

Some of those were experimental and never flew, in particular the XR7750 and maybe the XV2220, although they kind of show you where the art might have gone. They also show you what happens when something's developed by somebody outside the food chain in a particular field.

I think my favorite has to be the Napier Lion, if only because it showed up in a lot of different applications.


User currently offlineSCAT15F From United States of America, joined Feb 2007, 402 posts, RR: 0
Reply 10, posted (7 years 6 months 2 weeks 2 days 12 hours ago) and read 8804 times:

Quoting Dougloid (Reply 9):
Some of those were experimental and never flew, in particular the XR7750 and maybe the XV2220, although they kind of show you where the art might have gone. They also show you what happens when something's developed by somebody outside the food chain in a particular field.

Yeah, I suppose you could call it more of a "potentially greatest", "if they only would have produced it wishlist"  Wink


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