Two Cylinder Steam Engine

[Entondrawings]

when you built this engine, kongratulations!

[QCTechnologies]

Nice note

[hheywire]

it sounds like a four stroke! like my old 41 john deere b

[cffellows]

@hheywire - Yep, that was the intent. However, this engine met with an unfortunate accident several months ago when I dropped it on a concrete floor, bending the crankshaft pretty severely. So, I'm making a new crankshaft with the crank throws 180 degrees apart. It will no longer sound like a John Deere, but I have another engine I built which not only sounds like a John Deere, but looks like a John Deere!

[hheywire]

@cffellows can i please buy one of your engines? i love having something to just run on my desk. and i saw the one that looks like a john deere, very nice!

[cffellows]

@hheywire - Sorry, don't have any engines for sale right now. Also, these engines do require an air compressor for them to run...

[hheywire]

@hheywire well ill be looking forward to seeing the new one! :)

[tomsanzf]

does it look anything like this inside?

en.wikipedia (dot) org/wiki/File:Steam_engine_in_­action.gif

[cffellows]

@tomsanzf Well, it has pistons that move back and forth but that's where the similarity ends.

Chuck

[shaygetz1960]

What a sound...great stuff.

[dragracing3508]

that is awesome. looks like your john deere almost.....watch, i garuntee i ask you for these blueprints soon haha

[cffellows]

Don't have any drawings for this engine...

[russianboi711]

It would be awesome for a small car.

[SCTATERS]

would love to know the rpm reading at top of the green

[WorldStove]

lovely twin! is it double acting?

[Cretaal]

what design are you using, could you give me a link or something that has the plans for this?

[brewbsd]

deos the cylinder get hot?  on any steam engine steam/air?

[cffellows]

The cyclinder does not get hot running on compressed air. However, it would get hot if I were using steam.

Chuck

[suomunkrisu]

You made it? Nice looking machine =)

[djones8826]

That is a nice piece of engineering. Waiting to what else you have.

[djones8826]

Great job! How do you valve both intake and exhaust with one valve?

[cffellows]

There is a loose fitting, sliding piston valve inside the head. When the intake valve opens, the air pressure pushes the sliding piston valve to one side exposing the high pressure air to a hole into the cylinder. When intake valve closes, a spring on the other side pushes the sliding piston valve the other way, connecting the cylinder hole to the exhaust.

[djones8826]

Thank you. That simplifies the valve train.

[cffellows]

Yeah, I designed the valve to use with compressed air hit n miss engines. As long as the intake valve is closed, the exhaust will stay open so the engine can turn over as many times as needed between power strokes.

[superfunnyman123]

hey its bailey, so you are saying that the sliding piston vavle has a loose fit? I know it wouldn't be wobbly but like med. loose? or should i say does it need to be air tight? because if so I might be able to build your valve set up in the drawings.

[cffellows]

No, it should not be air tight. Not sloppy, but not air tight.

[superfunnyman123]

sweet! Im going to try to make your valve set up then:)

[steamyman]

great job!

[cobravacume]

Cool, do you have plans for it?

[cffellows]

No, sorry, kind of made it up as I went...

[v12revolver]

could you possiably make a quick pair and email em to me?