Building Stuarts Compound Steam Engine

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saw:
Connecting rod
Hello Gentlemen.
At last I found some time to continue my build of Stuarts Compound Engine.
This time it’s the connecting rod, and it is a very important part of the engine.
They have to be in straight line, square and the dimension must be exact.
Here is the casting of the connecting road, as you can see there is plenty of material to remove.

First I have to square the bottom end with an end mill.

And after that I have to draw out and mark where the holes for the crankshaft should be.

Next I drilled the top and bottom end…

… and this is for my set up in my lathe.

It shows up that this set up was not so good idea, so I changed to this.

And now I could finish some parts on the lathe.

Then I drilled some holes for the bolt before I partial bottom end in two parts.

Then I use a hacksaw…

…and there was two parts of each connecting roads.

Next I drilled the hole for the crankshaft.

And some more turn on the lathe.

This set up looks crazy but it is to help me drilling the holes square for connecting to the crosshead.

After that some milling.

Here I try to round off the top part.

And here we go, two connecting roads are finish.

And then I mounted the connecting roads on the engine.

This was a little tricky to do but another part is finish, but still there is a lot more to do.
I’ll be back

andyf:
It's looking really good, Benni :thumbup:
Andy

Meldonmech:
Hi Benni
What a first class build presentation and so detailed, nearly there now.

Regards David

saw:
Steam Chests
Hello Gentlemen. :wave:
Now it’s time to take care of the steam chest. This is a very important piece of the steam engine, it’s truly the heart of the steam engine.
I’ll begin with the cover. The cover has a spigot on the backside so it’s very easy to set up in the lathe.

Here I have set up the cover in my lathe for removing the cast skins.

After that I move the cover to my mill so I can mill the side in square.

Then with a hacksaw I cut of the spigot.

Then flatten the backside.

Now I have to mark out for all holes…

… and drilled the holes and countersink the holes.

I feel radar pleased with the result.

I’ll continue with the steam chests.
In the lathe I set up the steam chest in a four jaw chuck and took some turn on the top making the valve rod guide…

… and the bottom for the packing gland.

With a good fill I smooth the packing gland.
Moving over to the mill for milling both sides to the steam chest…

Then I milled both sides…

… and the insides as well.

And now I have four pieces so far.

Next, drilling the holes for the valve rod guide…

…and then using an end mill for the packing gland.

After that I drilled the hole for the steam inlet.

A new setup so I could drill the hole into the steam chest.

After two holes I’ll use bolt and nuts to hold the two pieces together.

And here we go.

Then, using the cover I drilled the holes in the cylinder block…

…and threaded the cylinder block with help of a top hat.

The stem chest with the cover seams to fits very well.

Next, the packing glands.

First I have to cutting of the pieces…

…and the in the lathe for some turns, flatten one side and center drill /drilled a hole.

Then I use a spigot so I could turn the other side.

Marking for the holes for the stud, then threaded and then drilling through …

…and after some good work with my fill I have to check so it fits well.

No it’s time for the valve roads.

After cutting the parts I took some turn in the lathe and threaded the valve roads …

…in both end.

And now there is to more pieces to the steam chest.

Next, the valve.

First in the mill I flatted both sides…

…trying to have a smooth side on the valve.

Then drilled throe …

…and then mill a track in the valve.

And now two more pieces finish.

Then I cut of a piece of bras…

…and mark up for a hole to be drilled…

…and threaded…

…and again check for fitting.

Then with a hacksaw and a fill I’ll got this…

…and it fits well in the steam chest.

And now another piece is finish.

This update took some times, it was radar many pieces to make and they have to be accurate, but nothing bad happened so I am very pleased over this update.
I’ll be back.

Stilldrillin:
That's good work you've done Benni! :clap: :clap:

Very well shown, too. :thumbup:

David D

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