I thought it was a great tutorial and should not be lost for future generations. I especialy like the part where he talks about poppet valves being dumb, cause I agree 100 percent. http://abbysenior.com/mechanics/valve.htm
Those coast engines are neat but the head/valve train are like 3x the size of the engine. It looks like an engine nearly doubles in size with those heads. All heads no engine.
Yeah that thing is way to complicated. They should have made the cylinders rotate the other way, so that half the head opens on intake, then half the head opens on exaust. That would give maximum flow. It looks like I am going to have to design it myself since everyone else does it wrong.
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