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Many thanks for inviting us along, we had a great day!

First time i see this type. Nice

That's some impressively precise work for the valves and other seals.

Great little engine - I recently picked up a part built Scamp, the chassis runs on air, it just wants a boiler. How are you finding yours after a few years of running?

verry cool

wow

Air powered sopwith camel

I'm thinking the air compressor you have to haul around would be a deal breaker in most cases.

be great to see under a strobe light? poor mans "slo mo". now make it a inline four... an " 8cylinder". not so easy, huh? one issue... not very adaptable to multi cylinders. to get more power in a compact unit isnt so easy. the geometry of that ring. the rod, i assume is solid. meaning at TDC the ring is the diameter of the rod length. cool... easy enough? at 90 degrees the rod is lower by the offset distance, so the ring is following the ends of the piston rod... the offset is half the stroke. and somehow that rotating solid rod maintains contact with three points. crankpin and the outer ring. which then has to be a cardioid. two opposed involutes. would be interesting to see with the stroke increased? a simple change to the stroke length alters the geometry of everything. the non-constant linear speed of the bearing rolling along that surface... bearing speeds are a sadly overlooked point of failure. the roller size also affects the geometry of the ring. im sure ive seen a three cylinder version as well... and then theres the other issue, the inherent fault of any engine... forces. leverage. cut the outer ring and roll it out. its just a wedge. inclined plane. in that regard this offers no advantages at all to any other mechanism in use. they all break down to the same basic idea... an inclined plane. levers. doesnt take much force to move the inclined plane and produce a lot of force on the piston... theyre all great compressors. takes a lot of force on the piston to move the wedge though. lousy "expanders". imho, thats the issue with any type of engine. in a way, old beam engines are the best as the force on the piston acts on the arm tangentially, at 90 degrees at all times through the "stroke"... when you see an old pump, the force of the piston is being transmitted directly to the pump rod. it may be at a different ratio due to distances from the fulcrum... but barely any energy is lost in the mechanism itself. as soon as the linear motion becomes "rotational", youre stuck with cranks and eccentrics, swashplates, you name it, everythings been tried... that force the energy to undergo these horrid mechanical conversions... a crank is terrible, at TDC ALL the pressure simply slams through the bearings! at a few degrees after, the conrod and crank arm at a few degrees, again, terrible mechanical advantage on the pin actually creating torque. (try playing with a pair of scissors held wide open?) only at 45 degrees does the force actually start really doing anything useful, and then, most engines are considering opening the exhaust port at 135 or so... i know this is steam/air, but an ICE is basically a steam engine with different valve gear and a carb... they all work the same. great mechanical advantage on the "squeeze" and "blow", terrible on the "suck" and "bang" parts... its inherent, the part of the mechanism. cant avoid it... or can you? how to get a piston to act tangentially on the crankpin whilst expanding for the entire stroke? THATS the key, imho.

Now make the cylinder stationary, and let the ellipse/ring turn instead, and you´re almost there... The ring, of course, is elliptical on the inside, but cirular on the outside, just as this one here...

Yet another effort to circumvent the crankshaft patent. The size and complexity compared to a trunk engine kinda explain why it didn't take off as a concept.

What is the power output, that is all that matters

Now that the concept works, you should build one in a bicycle wheel!

That's an interesting design and very well made. How did you cut the oval?

Works vary good.

Super video 👌👌👌🎉🎉

Sandar video 👌👌🌋🌋🎉🎉🎉🌺👌👌

Very very nice video 👌👌🎉🎉🌺🌺🌺

Super video 👌👌🌋🌋🎉🎉🎉

May I ask where you got the driving/riding truck?

great to see what i might be getting myself into for building a rail bike

this is beautiful. love the look on her face and the new heritage you have created. well done, sir!

I love that Greenspeed rail recumbent.

i really luv this i was wanting to do something simular so i looked it up on youtube and found this if u built it on your own u are amazing