colin Posted March 5, 2013 Share Posted March 5, 2013 I'll try and video the single pot working and upload to youtube, but not done that before so have to see how it goes. Link to comment Share on other sites More sharing options...
George Collings Posted March 6, 2013 Share Posted March 6, 2013 Take a look at The Hawker Sea Hawk was the Hurricanes direct descendant with a Bristol Centaurus sleeve valve. They even took on MIG 15s in the Korean war. The clever bit was the sleves not ony moved up and down but rotated to and fro to give a very fine control over the valve timing.. I am not so sure about all American engines being simple, they built some massive double row turocharged radials. The pic of an unknown radial shows how all the connecting rods drove a simple master rod. Itys the one at 3 oclock . The big counterweight was to counteract the mass of the pistons and rods pumping in and .. No wonder the gas turbine took over. Link to comment Share on other sites More sharing options...
colin Posted March 6, 2013 Share Posted March 6, 2013 Keithl - 2013-03-05 11:02 PM That looks very much like just the inner sleeve with the outer sleeve removed completely if I am not mistaken judging by the fact the piston is a good fit in the sleeve and then there is a 'gap' around the sleeve to the crankcase. Could you possibly post photos of both sleeves to show people how the port arrangement works? I would photograph the sleeve I have but unfortunately I am in Sweden for another week with work so am 1,000 miles from it! Keith. They only have a single sleeve per cylinder. Here goes, uploaded to photobucket and files where much bigger than I thought. The inlet/exhaust ports are 'heart' shaped, the larger 'square' cut out is just to show the workings. http://s652.photobucket.com/albums/uu246/phaeton1998/?action=view¤t=06032013039_zps4092d222.mp4 http://s652.photobucket.com/albums/uu246/phaeton1998/?action=view¤t=06032013040_zpse2bacbd1.mp4 Link to comment Share on other sites More sharing options...
colin Posted March 6, 2013 Share Posted March 6, 2013 George Collings - 2013-03-06 2:04 PM I am not so sure about all American engines being simple, they built some massive double row turocharged radials. The 4 row r4360's are big beasts and I've never worked on any, but the two row engines are fairly simple once you master the basics, The Bristol sleeve valve engines just seem to be overly complicated, but they where renowned for being robust in service. A sadly departed friend of mine always blames getting shot down and made prisoner of war, on the fact he had just swapped to a Halifax with merlins which had a tendency to catch alight when damaged. Link to comment Share on other sites More sharing options...
JohnP Posted March 6, 2013 Share Posted March 6, 2013 Regarding the 'Just Jane' Lancaster NX611 at East Kirkby I understand that they have acquired four new engines A few more photo's on lots of pages when you have an hour to spend. http://www.mission4today.com/index.php?name=ForumsPro&file=viewtopic&t=14429 Link to comment Share on other sites More sharing options...
George Collings Posted March 8, 2013 Share Posted March 8, 2013 Yet another of Sydney Camms designs the Typhoon had yet another sleeve valve engine with 24 cylinders. Two horizontally opposed 12 cylinder engines with a crankshaft each but geared together. They delivered 2400 hp but talk about complicated. Google napier sabre Images Sorting out a miss must have been a nightmare. I worked with a gent who had been RAF groundcrew on them . He said each sortie used 24 gallons of engine oil. Link to comment Share on other sites More sharing options...
colin Posted March 8, 2013 Share Posted March 8, 2013 George Collings - 2013-03-08 10:17 PM He said each sortie used 24 gallons of engine oil. Oil consumption is a problem on most sleeve valve engines, but not so much of a problem on aircraft, you just install a big enough oil tank :-) Link to comment Share on other sites More sharing options...
Keithl Posted March 9, 2013 Share Posted March 9, 2013 Daimler 'Silent Knight' sleeve valve engined cars where always accompanied by a haze of blue smoke, very distinctive! Keith. Link to comment Share on other sites More sharing options...
George Collings Posted March 9, 2013 Share Posted March 9, 2013 I read somewhere that the Daimler sleeve valve engines were intrinsically no smokier than any other engine of that era. It was due to owners/driver mishandling them. The trouble is I cannot remember with any certainty what they were doing wrong. It might of been something as simple as overfilling the sump. The lessons learnt about combustion and turbocharging during the last phase of piston aero engine development have led to the latest generation of very economic and powerful automotive power units. Link to comment Share on other sites More sharing options...
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