Timing nightmare
- Thread starter A.J.
- Start date
I can see the problem.
Jim
Jim
British engineering at it`s best!!!!!! The Centauras found in the Sea Fury and others, the Hercules was only 2000hp. Best get to Reno and see them go!!! Saw a cutaway Centauras in a museum up in Scotland, amazing, complex made the mind boggle!!!!
And once you get it timed this might help to get all the other bits workin!
Is that a Wright 3350 turbo compound engine?
To those viewing this who have never seen a sleeve valve engine, this complex monster uses movable sleeves and ports to control intake and exhaust, not the traditional poppet valve method we are most familiar with.......kind of like a cross between two and four stroke technologies. With enough boost they were effective, as shown by the stats for the Sea Fury.
Jac Mac- I knew you would have some shots of this one. I thought it was mind-numbing enough just to think about the sleeve timing gears, but yes, it doesn't end there. It amazes me they could get all the sleeves and attendant mechanisms to function at full rpm.
Jac Mac- I knew you would have some shots of this one. I thought it was mind-numbing enough just to think about the sleeve timing gears, but yes, it doesn't end there. It amazes me they could get all the sleeves and attendant mechanisms to function at full rpm.
Hi AJ
Ive been trying to work out how the engine works...
I found this site on radial engines, and some pics of the sleeve valve engine
Radial engine - Wikipedia, the free encyclopedia
Im geussing it has the same fireing intervals as a fourstroke engine, but the sleeve is cam driven, and stays up on the firing stroke, and comes down with the piston on the next cycle acting like a 2 stroke engine. Allowing the gasses to escape, and then the feul mixture is forced in by the turbo. Then the sleeve goes up with the piston, and stays up as the engine is then back on the fireing stroke......But Im not sure......
Could you please explain how the engine works
Mick
Ive been trying to work out how the engine works...
I found this site on radial engines, and some pics of the sleeve valve engine
Radial engine - Wikipedia, the free encyclopedia
Im geussing it has the same fireing intervals as a fourstroke engine, but the sleeve is cam driven, and stays up on the firing stroke, and comes down with the piston on the next cycle acting like a 2 stroke engine. Allowing the gasses to escape, and then the feul mixture is forced in by the turbo. Then the sleeve goes up with the piston, and stays up as the engine is then back on the fireing stroke......But Im not sure......
Could you please explain how the engine works
Mick
Seymour Snerd
Lifetime Supporter
Twinings English Breakfast, I imagine.
Howard Jones
Supporter
I have been thinking about this. I bet this sleeve system is LESS complicated than if a cam/valve system was used. I tried to draw a cam/valve system for two cylinders front and rear cylinder rows and gave up after about an hour.
This was done without computers! You see, once upon a time long ago engineering was done on a drafting table with a pencil. Strange but true................
This was done without computers! You see, once upon a time long ago engineering was done on a drafting table with a pencil. Strange but true................
Now that you've digested this, try wrapping your mind around a migrating chamber engine. Advantages are high torque at low rpm and the exhaust leaves the engine at close to ambient temperature.
http://www.ericksonmotors.com/mccsim.htm
http://www.ericksonmotors.com/mccsim.htm
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It went on to become the Bristol Centaurus one of the most powerful & reliable piston engines ever made (mainly because it was 'valveless'). It also powered Britain's last piston fighter the Sea Fury, which itself was a development of the Tempest. It was surprisingly reliable and I believe they made 58,000 of them all told...but it takes a Kiwi to keep them running these days!
That is until Napier came out with the Sabre a 16 cylinder 'H' configuration - also using sleeve valves, and with a compound turbocharger, 5,000 hp was possible. Sadly, that is the last major piston engine Napier built apart from the Deltic - then they got swallowed up by a succession of conglomerates.
Charlie Farley
Supporter
I know only one audio channel works, but if you skip to 3.20'ish, it shows an interesting firing pattern, as the daylight fades.
Correct me if i'm wrong, but wasn't the Seafury the only piston engined fighter to be credited with Mig 15 kills in the Korean War ? And to boot, as was admitted to after the end of the Cold War, those Migs were flowen by WW2 era Russian Aces.
Reno Air Races & Airshow - Sea Fury Breathing Fire - TopFlight.TV - YouTube
Correct me if i'm wrong, but wasn't the Seafury the only piston engined fighter to be credited with Mig 15 kills in the Korean War ? And to boot, as was admitted to after the end of the Cold War, those Migs were flowen by WW2 era Russian Aces.
Reno Air Races & Airshow - Sea Fury Breathing Fire - TopFlight.TV - YouTube
One confirmed and one 'probable'. It wasn't a fair fight and I think an element of luck was involved. The Sea Fury was certainly more maneuverable at low altitudes and could achieve a fighter pilot's 'nirvana' - the ability to turn tighter than (inside) your opponent. I think the SF represented the apogee of piston engined fighters.
I remember them flying from HMS Daedalus in Lee-on-Solent in the late '50's. What a glorious noise!
They have a far more dubious claim to fame though. Cuban Sea Fury's were responsible for shooting down several B26's and other light bombers fielded by the (BOP) invaders as a result of which Kennedy opted not to back the (Bay of Pigs) invasion with overt US carrier borne fighters.
This led to cries of 'treachery' from various interested parties, including the CIA, and may have led, albeit in a tortuous and as yet unproven route, to Kennedy's assassination the following year as there is no doubt, with air superiority, the invasion would have stood a much better chance.
I remember them flying from HMS Daedalus in Lee-on-Solent in the late '50's. What a glorious noise!
They have a far more dubious claim to fame though. Cuban Sea Fury's were responsible for shooting down several B26's and other light bombers fielded by the (BOP) invaders as a result of which Kennedy opted not to back the (Bay of Pigs) invasion with overt US carrier borne fighters.
This led to cries of 'treachery' from various interested parties, including the CIA, and may have led, albeit in a tortuous and as yet unproven route, to Kennedy's assassination the following year as there is no doubt, with air superiority, the invasion would have stood a much better chance.
