3 cylinder vertical National gas engine5508 views (16 votes)
2824 views (5 votes)
3577 viewsMirrlees designed 'Ricardo' sleeve valve engines, one type having a bore of 5.5 inches and a stroke of 6.5 inches, developing 20 BHP per cylinder at 900 r.p.m., and the other with a bore of 17 inches and stroke of 21.5 inches, developing 50 BHP per cylinder at 200 r.p.m.
(8 votes)
3968 viewsIn 1926 attention was paid to the development of other enclosed types, incorporating forced lubrication and two models were designed, one having a bore of 12.5 inches and a stroke of 19 inches, developing 60 BHP per cylinder at 300 r.p.m. and the other having a bore of 13 and three quarter inches and a stroke of 19 inches, developing 75 BHP per cylinder at 375 r.p.m.