Guys, I need some help here please. I am researching alternate means of opening exhaust valves other than with the traditional 2:1 gear train, and cam. I have so far found only four methods, and I don't know if its only my poor google-foo, or if there simply never were that many in the first place.
I have found the star wheel mechanism, as found on early full size "gearless" hit and miss engines, the weird siamesed cam that flips a lever back and forth, again as found on some early full sized hit and miss engines, the small version adapted by Philip Duclos on his Gearless hit and miss engine (which looks a bit like a metal Swastika) and the strange cam arrangement patented by the Wright brothers of airplane fame. Does anyone know of any other strange exhaust valve opening devices that were totally mechanical and operated successfully to open and close exhaust valves?---Brian
I have found the star wheel mechanism, as found on early full size "gearless" hit and miss engines, the weird siamesed cam that flips a lever back and forth, again as found on some early full sized hit and miss engines, the small version adapted by Philip Duclos on his Gearless hit and miss engine (which looks a bit like a metal Swastika) and the strange cam arrangement patented by the Wright brothers of airplane fame. Does anyone know of any other strange exhaust valve opening devices that were totally mechanical and operated successfully to open and close exhaust valves?---Brian
