Engines > From Plans

Greene Automatic Cutoff Steam Engine

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jeff l:
I would sell the prints for this engine printed on paper even tough it's something that I hate to do .
Also I would sell individual castings if the builder felt that he or she would fabricate some of the items instead of machining them from castings .As Kirk said the engine would be difficult to build without the castings .

RichardHed:
Is it possible to get the plans by email instead of  by paper?

Jasonb:

--- Quote from: RichardHed on December 15, 2021, 07:03:41 pm ---Is it possible to get the plans by email instead of  by paper?

--- End quote ---

See post #499 just above "The plans are supplied as PDFs"

Best to just e-mail Jeff about availability and costings.

kvom:

--- Quote from: jeff l on October 30, 2021, 07:21:54 pm ---I would sell the prints for this engine printed on paper even tough it's something that I hate to do .
Also I would sell individual castings if the builder felt that he or she would fabricate some of the items instead of machining them from castings .As Kirk said the engine would be difficult to build without the castings .

--- End quote ---

The "critical" castings are the cylinder block, flywheel, and frame.  The cylinder block has cores;  I found via using the Solidworks cross section tool that it could be built from two pieces of stock so that the core voids could be machined in each half that are later mated precisely.  The flywheel is 11" diameter, but it might be possible to find a similar casting or be built up.  The frame would be difficult in metal without 3D CNC, but might be possible via 3D printing of a sufficiently rigid material to which crosshead guides could be attached.  From casting it is the most difficult to machine for me at least.

Bill:
Hello. I’m building the Greene automatic steam engine.  The cylinder block is close to being finished. Waiting first to build the sliding steam and exhaust valve.  I noticed a few dimensional inconsistencies.  The exhaust block square face will over hand the cylinder block by 1/16”.  My thought was to place the cylinder exhaust bore up by 1/16” to fix this issue. 
The ports are machined on the sliding valves just need to finish turn.
My guess is that I need a sliding fit between the valves and cylinder block. If the siding valve surface are a little off parallel to the OD the assembly will bind.
Any suggestions on what you would recommend doing on the steam ports?
Bill

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