Sleeve valve engines

[SWH]

I was curious reading about this - a quick search turns up a decent cutaway video of one being turned over: http://www.youtube.com/watch?v=NSMYjRNQ8Rs

There are a few other videos on YouTube as well; one of a 20's Daimler running, along with a load of aero engines

[crankedup]

Thanks for link SWH, pictures speak a thousand words. Despite the obvious advantages of the engine design being smooth and almost silent in operation clearly the disadvantages saw an end to the design. Makes me wonder though why it is modern tech' cannot overcome some of the early disadvantages, not to be which is rather a shame.