Unidentified vertical steam engine

[Ian S CParticipant @iansc]

[Ian S CParticipant @iansc]

My friend (the one that bought along the Stuart Turner S9) bought this little engine along the other day. I put some Teflon tape packing in the piston grove, it now goes, but needs about 30psi. The bore is 1/2", and the stroke is 3/4", The motor stands at about 4 1/4" high. The cover on the steam chest has a bold cross cast on it.

Anyone got a clue, my friend wants to know a bit about it, it will be an exhibit in his museum.

Ian S C

[Dan JonesParticipant @danjones77555]

Hi Ian,

The engine is a Stuart Turner S.V. Part of the "PROGRESS" range from the late 30s – early 40s. Sold as a set of castings for people with the use of a small lathe.

Dan.

[Ian S CParticipant @iansc]

Thanks for that Dan, I think surviving Stuart Turner S.V. Progress engines are fairly rare, I spent the afternoon looking through Google, I found reference to the series of Progress engines, horizontal, vertical, oscillating, and slide valve. The only photo I found was of the new/current production OH engine.

They were sold with the cylinder pre bored, and faced. Someone with a small lathe, even a Super Adept could do the remaining machining.

I think this one Had the holes drilled for the cylinder end cap drilled free hand with a hand drill, they are at all angles except right angles, good thing it has little (8 BA) hex head bolts. One of the cylinder head bolt holes had been drilled through clearance size, so the builder just used 5 bolts, and soldered the 6th one in the end cover. I tapped the hole 6 BA , made a 6 BA stud, reduced a 6 BA nut to 8 BA size, I think it will look OK.

Ian S C

[JasonBModerator @jasonb]

There is one here Ian, first google image that came up for me, also a horizontal progress

**LINK**

[Ian S CParticipant @iansc]

Thanks for that Jason, my friend Mat who has Mat's Mini Museum, just down the road from me (the owner of the motor), also has a collection of single cylinder petrol small boat motors, and I think there are one or two by Stuart Turner.

I don't think I'll do too much to this motor, but I might just make a better base for it, and turn the flywheel round the right way. On the other side of the flywheel are two holes for drive pins for a prop shaft for a boat.

Ian S C

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