We’ve covered quite a few different engines here at The Kneeslider, shops all over the world seem to keep coming up with variations to the basic internal combustion engine. Their efforts produce some innovative designs, they build prototypes and proceed to market or begin looking for funding and we don’t seem to hear much more.
I came across the Ecoforce engine a little while ago when looking for info on the Hunwick Hallam motorcycle. The project is spearheaded by Paul Hallam who was engineer and craftsman for the Hunwick Hallam motorcycles. Lots of interesting info at the site with a video of a running engine but most of the material seems a little dated so it’s hard to tell if the project is still going forward.