ThomasP
Senior Master Sergeant
re
Air cooled sleeve valve engines seemed to weigh a bit more more per displacement, but put out 10-15% greater power for said displacement.
Their diameters were about the same as - or a bit smaller than - a poppet valve engine of equivalent power?
Sleeve valve engines seemed to be able to run reliably at a bit higher rpm.
Unfortunately, there is not much directly comparable usable info for sleeve valve engines to the Japanese engines due to the differing fuel qualities, specific sizes actually developed, and of course the real timeline of development. One can offer the same what if to both the British and Japanese - ie what if they had begun concentrating on the sleeve valve significantly earlier - or solved the problems earlier via some other mechanism.
Not sure.What problem should've the sleeve valves solve for the Japanese?
Air cooled sleeve valve engines seemed to weigh a bit more more per displacement, but put out 10-15% greater power for said displacement.
Their diameters were about the same as - or a bit smaller than - a poppet valve engine of equivalent power?
Sleeve valve engines seemed to be able to run reliably at a bit higher rpm.
Unfortunately, there is not much directly comparable usable info for sleeve valve engines to the Japanese engines due to the differing fuel qualities, specific sizes actually developed, and of course the real timeline of development. One can offer the same what if to both the British and Japanese - ie what if they had begun concentrating on the sleeve valve significantly earlier - or solved the problems earlier via some other mechanism.