I am not sure exactly where to post this item, or what category it would go under, but this is one of a number of old steam engine designs I have been reverse-engineering using 3D modeling, with the intent of casting an engine that is perhaps 24" (+ -) tall overall, or perhaps slightly taller. I know these were commonly manufactured in the late 1800's, but I have never seen the patterns or core boxes for one of these, and so I am having to guess at the parting lines, core box arrangement, and methods for making the pattern for the frame. Here are some of the bits and pieces of the design, and these parts are not a copy of any one particular engine, but rather a mixture of various parts that closely adhere to the style of the late 1800's period.
I changed the main bearing caps to a 2-bolt design, although I have seen examples of 4-bolt designs on the old engines. The piston can be made flat; most flat pistons were hollow for weight reduction. The piston style I selected is generally seen on the high pressure side of compound steam engines, but it is a strong and lightweight design, but requires a bit more work to match the inside of the heads. The bore would probably be 2" diameter. Most of the parts would be cast in iron.
The engine will have Stephenson's reverse gear, and I have most of that laid out, and need to find he exact pivot point for the link. The arrangement is "launch links".
Most of the patterns for this engine will be one-piece including the flywheel. I have yet to see an old steam engine pattern that was two piece, and so I have started using one-piece patterns for everything. A one piece pattern is much easier to make, much more durable, and avoids a lot of unnecessary complexity and misalignment problems (easier to mold too). The only pattern for this engine that will be two piece (by necessity) will be for the frame.
I don't like the initial flywheel design I came up with, which is this one. I have another that is a later version; I will look for it. Old style flywheels are more complex in their design than you would think. The spokes were often ellipsoidal, and tapered along their length, so that is a bit tricky to model in 3D.
Here is a hit-and-miss flywheel that I made in SW. Rev 10; trying to get it to look like an original Galloway flywheel, and I think this is pretty close, but you can see the ellipsoidal taper I was talking about that can be tricky to model.
That looks like the engine Doubleboost has been working.. I'm not even a machinist, but I tune in every week for the sunday night, night cap. The cooking shows crack me up. For those that don't know about John, here is a link. https://www.youtube.com/user/doubleboost
I looked through the index of his perhaps 5 million videos (great balls of fire that guy has a lot of videos), but I did not see a bottle engine anywhere. You got a link to a specific video that shows it? What a strong accent he has, but of course he would certainly say the same if he heard me speak (which is why I don't speak in my videos). When people from out of town visit here, people from around here say "Where ya'll from?" (with a heavy southern accent and dialect that depends on exactly which southern state you are in, or which region of this state you are in). A guy came up to me a few years ago and asked "Where is the fire" (at least that is what it sounded like to me). "What fire?" I asked. "The fire; you know, with all those rides that go round and round". (fair)
I was bs'ing with a guy working around a shop today.... He was almost 80 pushing a broom at his sons place of business. After a few minutes, he divulged he was from Louisiana.... OMG, THEN you should have heard the cajun language come alive. I told him I liked crawfish etoufee (pronounced ET TWO FAY) and you would have thought I was talking about the 2nd coming of christ! If you can understand cajun or cockney.... A southern accent is a no brainer. Spend a few hours listening to John (doubleboost), you'll get the hang of it quick. For a further education, look up the show called "Still Game" on netflix. Turn the CC on for the first few episodes, then shut it off. This show is HILARIOUS and I personally guarantee you'll laugh your ass off at it. Remember the old adage... Man was giving 2 ears and 1 mouth. That means it's twice important to listen than to run your trap.
