Gentlemen,
It's been awhile since I posted but in my defense I have been busy. With the show season over I needed a project but wanted to get away from I.C. engines for awhile. Building and sorting out the flathead V-8 kind of drained me.
Two of my favorite steam engines are the beam type and the triple expansion. I have build a couple of beams but have never done a triple so starting with the drawings for the Stuart compound launch I began designing my own. The big difference is that this one will be half size of the compound launch. I used the bores for the compound launch then proportioned the L.P. cylinder accordingly. The H.P. cylinder has a bore of .375, the I.P. cylinder is .625 and the L.P. cylinder is .875. The cylinders, steam chests and covers are all made from iron. The rods and valve straps and main base are brass, somewhat similar to what the Stuart is. All of the stanchions, piston shafts and valve rods are stainless steel. The steel pieces are made from 1144 stressproof steel. The small bolts are M1.2 x .25 and there are about 80 of them in various lengths and configurations. The main bearing bolts are 2-56 while almost all the set screws are 1-72 thread.
I have some pictures of the bits and pieces as I was building it should anyone like to see them. For now I'll just post the engine as newly completed. All that remains is to construct the pipework. The last picture has an American half dollar for a size comparison. It is 1.20" diameter
gbritnell [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ]
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