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Thanks for the info terryd. I have always wondered if superheated (dry) steam will be equally efficient with displacement lubricators?

Hi Terry, I did not make the super heater. In fact, I didn't know about it in the Stuart boiler. However, I have been playing with the thought of routing the pipe back into the fire though. Rudy

Thanks for all the input guys. I did place an order for plans for the Stuart Twin Launch and the Triple Expansion. I have some ideas on how to make the cylinder block and also some other mods I want to do, so a kit is probably not necessary. Planing for a bit of time in the shop these days, so a...

Thanks Jens Erik. I have actually thought of using a gas burner and already bought a ceramic terrace heater to get hold on the ceramic, so I'll give it a shot and try making one. I absolutely like the idea of using gas. Clean and simple. If I fail I can always buy one or make that spirit burner...

Nice shop David. You got some seriously good machinery for a hobby shop. Agree about the DRO. I Can't even imagine doing anything without. Got it installed both on my mill and lathe. Stuart has a good reputation, but I don't quite agree. Have just one kit under my belt, but i had to get two of...

Is it the Primus burner you referring to ar the noiseless burner Mechanicboy? In my case I'm just about finished with my Stuart 10V steam plant and the only thing missing is actually the burner, and it shall be a quiet one indeed. I'm currently planing to make an adjustable spirit burner. I...

David, I suspected you where a bit above an average hobby machinist :-). I'm particularly interested in how to achieve accuracy, so I'm looking forward to see how you will solve the cross head task. I have an idea my selves, but that includes some modifications to the design. I will still keep...

David, you have already done a great job here! Like the way you make the eccentrics. I actually remade mine on my 10V to something similar. Makes a better bearing surface. I will do a Twin Launch my selves (I have a thread on a "Modified Expansion Engine). I think this is a very good...

Thanks guys. This is thread actually starts to be very educational for low RPM guys :-) So far I'm thinking: Low friction, 1:4 CR, Very-very conservative intake valve cam lobe (I would prefer both valves to be cam operated just to ad more nice moving visible parts). Exhaust lobe probably as a...

Tom, just by looking at the cam lobe on my Farm Boy Hit'n miss engine I see a huge difference compared to a car engine. The lobe opens very fate and stays open for a very long time, and shuts equally fast. This is of cause possible because of the low rpm, but anyway, the duration is what I would...

Thanks for explaining about the pumps Charles. I'm starting to get the picture. Intricate stuff this external combustion idea. Rudy

Hm.. that gives meaning Cogsy. I have been thinking that steam continues to expand after leaving the cylinder. However, compressed air leaving the cylinder will actually also have pressure. When the exhaust port is opening, the same pressure that drove the piston is actually let right out the...

I need some advice from you guys. I’m planning on my next project. It will take a year so I better do it right. I would like a steam engine. Twin or triple with lots of details and the style very often used in medium size steam boats. That would be for instance the Stuart Twin or the Stuart...

I have no idea.. Rudy

JCSteam, Thanks, Your'e right, It is greatly inspired by the now reintroduced Stuart 504 boiler. Haven't figured out how to fix it to the base plate yet. Probably four small brackets on the inside, screwed down in threaded holes the 5mm base. Stil not decided on the type of burner I will make...

Minh Thanh, yes, it's a safety valve. Very simple and reliable design. Easy to make. The glas tube is 4mm outer diameter. Bought it on Ebay. I have some hand drawn sketches for it all that I will put up here when I'm coming around to it. Rudy

Andrew, do you have any idea of what pressure this boiler would hold? I was planing on setting the safety valve to 40 psi, but I assume the boiler will take much more. Rudy

minh-thanh, first, I did buy the gange. The valves is a compilation of others design blended with my touch. Easy to make. I did cheat a bit and started with 12,7mm (1/2") bras balls. However, turning it your selves is not all that difficult. Doesn't need to be ball bearing-round. I'll put up a...

Hi guys, Hav had some time in the shop lately and did some progress on my boler. I have no plans, so I just build as I go. Did a trial assembly before I'm going to paint some of it. Since this is my first boiler, I have no experience running a steam engine on live steam, so I'm exited about how...

Hello bd64, Believe you will enjoy this community. Would like to se some pictures of your builds. Did go the same route my selves, a 10V and the Farm Boy Hit'n miss. Rudy