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Rolls Royce Griffon - 1945 magazine article #4690142
03/10/18 12:47 AM
03/10/18 12:47 AM
Joined: Dec 2002
Posts: 41,540
'Stralia
Shannow Offline OP
Shannow  Offline OP
Joined: Dec 2002
Posts: 41,540
'Stralia

Re: Rolls Royce Griffon - 1945 magazine article [Re: Shannow] #4690148
03/10/18 01:21 AM
03/10/18 01:21 AM
Joined: Feb 2014
Posts: 2,602
Canada
Lolvoguy Offline
Lolvoguy  Offline
Joined: Feb 2014
Posts: 2,602
Canada
approved


06 Lexus IS350- Wife
88 BMW 325is- Mistress
Say "no" to Turbo!
Re: Rolls Royce Griffon - 1945 magazine article [Re: Shannow] #4690150
03/10/18 01:26 AM
03/10/18 01:26 AM
Joined: Feb 2015
Posts: 2,359
Slovenia EU
Kamele0N Offline
Kamele0N  Offline
Joined: Feb 2015
Posts: 2,359
Slovenia EU
Tnx thumbsup


2008 Toyota Yaris 1ND-TV 1.4 D4-D Elf FullTech FE 5w30
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40
Re: Rolls Royce Griffon - 1945 magazine article [Re: Shannow] #4690204
03/10/18 06:09 AM
03/10/18 06:09 AM
Joined: Nov 2006
Posts: 20,570
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,570
MA, Mittelfranken.de
Interesting. thumbsup


ASE L1, Master. Deutsch Meisterbrief.
Re: Rolls Royce Griffon - 1945 magazine article [Re: Shannow] #4690246
03/10/18 07:09 AM
03/10/18 07:09 AM
Joined: Jul 2016
Posts: 1,224
Europe
SonofJoe Offline
SonofJoe  Offline
Joined: Jul 2016
Posts: 1,224
Europe
A jolly good read from an easier to understand time.

Re: Rolls Royce Griffon - 1945 magazine article [Re: Shannow] #4690411
03/10/18 10:39 AM
03/10/18 10:39 AM
Joined: Aug 2016
Posts: 316
Alberta
carviewsonic Online content
carviewsonic  Online Content
Joined: Aug 2016
Posts: 316
Alberta
Good find! Impressive technology for the day...


'18 Impala
'05 Park Avenue
'07 Honda Accord
'09 VStar 1300
Re: Rolls Royce Griffon - 1945 magazine article [Re: Shannow] #4690456
03/10/18 11:38 AM
03/10/18 11:38 AM
Joined: May 2013
Posts: 2,160
Saskatchewan, Canada
Johnny2Bad Offline
Johnny2Bad  Offline
Joined: May 2013
Posts: 2,160
Saskatchewan, Canada
Great article. I am always reminded of how the Mustang was considered a dud aircraft until the Brits replaced the engine with the Merlin, and creating perhaps the best fighter and definitely the best bomber escort airplane of WWII.


'57 FL Straight 50 wt
'90 Miata 1.8L w/Rotrex Supercharger [Mobil1 0W-40]
'96 Ram 1500 [3.7L Mobil1 0W-20 / 1L 15W-50]
'01 PT Cruiser [Mobil1 0W-40]
Re: Rolls Royce Griffon - 1945 magazine article [Re: Shannow] #4690463
03/10/18 11:45 AM
03/10/18 11:45 AM
Joined: Sep 2004
Posts: 7,812
Marshfield , MA
andyd Online content
andyd  Online Content
Joined: Sep 2004
Posts: 7,812
Marshfield , MA
That engine is engineered !!. V-12 Aero engines are awesome. P 51 Mustangs are still raced.

The main problem with Rolls Royce engines was the hand tooling required to assemble. Picture a bunch of older guys wearing glasses and dirty aprons busily filing away. "Hmmn ,needs a little off here.Then I'll try the fit after tea.". Add being a prime target for German bombers. The Allison and the Packard engines took the designs and applied modern engineering processes to ensure the parts were built to tolerances that allowed parts to be assembled without so much fitting. Instead of a 100 engines a month, 1000s were produced in the arsenal of democracy.

Last edited by andyd; 03/10/18 11:47 AM.

'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Rolls Royce Griffon - 1945 magazine article [Re: Shannow] #4690478
03/10/18 12:07 PM
03/10/18 12:07 PM
Joined: May 2013
Posts: 2,160
Saskatchewan, Canada
Johnny2Bad Offline
Johnny2Bad  Offline
Joined: May 2013
Posts: 2,160
Saskatchewan, Canada
Did anyone dig into the specs?

2,220 HP
Maximum RPM 2,750
0.992 HP /CuIn

Those are numbers that the OEM automotive world didn't see until the 1960's, and under no circumstances did they achieve them at under 3,000 RPM.

As for the "hand tooling" myth, for starters, if there was any hand tooling, it was done by 19 year old women, not men, during WWII. The UK conscripted to age 45.


'57 FL Straight 50 wt
'90 Miata 1.8L w/Rotrex Supercharger [Mobil1 0W-40]
'96 Ram 1500 [3.7L Mobil1 0W-20 / 1L 15W-50]
'01 PT Cruiser [Mobil1 0W-40]
Re: Rolls Royce Griffon - 1945 magazine article [Re: Shannow] #4690480
03/10/18 12:09 PM
03/10/18 12:09 PM
Joined: Feb 2014
Posts: 595
Margate England
Claud Offline
Claud  Offline
Joined: Feb 2014
Posts: 595
Margate England
There is nothing about a modern engine - aside from computer control and VVT - that an aircraft mechanic from WW! wouldn't understand, the basic layout of the Griffon being much the same as the Eagle engine first produced in 1915.
Hydraulic disc brakes, the self starter, windshield wipers, 4WD, you name it, it was mostly all produced before WW!, or at least working prototypes had been built.

Claud.

Re: Rolls Royce Griffon - 1945 magazine article [Re: Shannow] #4690512
03/10/18 12:48 PM
03/10/18 12:48 PM
Joined: May 2014
Posts: 3,835
Columbus,Nebraska
Yah-Tah-Hey Offline
Yah-Tah-Hey  Offline
Joined: May 2014
Posts: 3,835
Columbus,Nebraska
Thank you for posting this very interesting article on the RR aircraft engine. Truly a work of art. And thank you UK for being our ally through good and not so good times.

Re: Rolls Royce Griffon - 1945 magazine article [Re: Shannow] #4690525
03/10/18 01:04 PM
03/10/18 01:04 PM
Joined: Feb 2010
Posts: 4,838
Central Texas
sleddriver Offline
sleddriver  Offline
Joined: Feb 2010
Posts: 4,838
Central Texas
Thanks for posting! Incredible engine.


1998 Volvo V70 T5 228,880 mi. Original Owner.
M1 10W-30 HM
"It's never a mistake to buy tools, defined broadly. They're not a cost, they're an investment." - J.B. Peterson
Re: Rolls Royce Griffon - 1945 magazine article [Re: Johnny2Bad] #4690609
03/10/18 02:45 PM
03/10/18 02:45 PM
Joined: Dec 2011
Posts: 898
Ca USA
BusyLittleShop Offline
BusyLittleShop  Offline
Joined: Dec 2011
Posts: 898
Ca USA
Originally Posted By: Johnny2Bad
Did anyone dig into the specs?

2,220 HP
Maximum RPM 2,750

Correction... 2,750 is the maximum propeller RPM... the crankshaft RPM
could go as high as 3,700 RPM... Rolls Royce V12 engines employ a
single spur gear reduction of 0.98 ratio to multiply the crankshaft
torque and to lowered the propeller RPM... Propellers are most
effective at subsonic airspeeds 480mph to 512mph any higher and you
risk the blade tips speed going supersonic with deadly shockwaves
producing high drag and related mechanical problems... basically the
more prop noise you hear the less efficient thrust you get...

Its the Merlin but your get the layout


My finger is touching the crank on a blown Griffon Reno Air Races...


480mph was possible by trimming the props diameter for 2008 winner Strega...






Last edited by BusyLittleShop; 03/10/18 02:53 PM.

Larry L
Have a Wheelie NICE day
94 RC45 #2 58,000 on 30 weights Currently Mobil 1 5W30
2002 Camaro Mobil 1 0W30
1952 De Havilland Chipmunk



Re: Rolls Royce Griffon - 1945 magazine article [Re: SonofJoe] #4690746
03/10/18 05:39 PM
03/10/18 05:39 PM
Joined: Dec 2002
Posts: 41,540
'Stralia
Shannow Offline OP
Shannow  Offline OP
Joined: Dec 2002
Posts: 41,540
'Stralia
Originally Posted By: SonofJoe
A jolly good read from an easier to understand time.


Yes, I treasure my british sourced texts up to around the late 50s...I've read this one cover to cover four times.
https://www.amazon.com/Efficient-Use-Steam-Oliver-Lyle/dp/B0006ARQ7E


Here's another Merlin paper from my archives...(thought I'd go back and find the things I've stashed "for later"
https://drive.google.com/open?id=1TyuwfgQrGmrJeFKRCUZVSempGn6RGfGx


If you start on your own journey
And you find a path
...It's someone else's path.
Re: Rolls Royce Griffon - 1945 magazine article [Re: Shannow] #4690755
03/10/18 05:55 PM
03/10/18 05:55 PM
Joined: Dec 2002
Posts: 41,540
'Stralia
Shannow Offline OP
Shannow  Offline OP
Joined: Dec 2002
Posts: 41,540
'Stralia
While in a sharing mood, here's the GEC design for the first of the "big" 500MW units. Ended up being built by Parsons (who became Rolls Royce at one Stage)...these units became the basis for King's North Diddcott, Nanticoke, and the place that taught me to be an engineer (Wallerawang).
https://drive.google.com/open?id=0B72RMQAMdx4iVFFmN2V2OWYyaWluZklPWVRmRjNRTEhxbFJr


This one goes without saying as one of the greatest tomes there is.
https://drive.google.com/open?id=1ed4oWKxeZlmEbbd9gTMTgZA8Pfcr7Rb6

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