Here are some pictures of patterns for my latest "Work in Progress"  project.   The engine is a 1-1/4" bore, four stroke single called the "Midget" from a 1938 Popular Mechanics magazine article.

 

 I spotted one of these engines at the "Iron Fever" show in York PA back in 2004.   I could not identify it at that time.  Then several months later I bought some "model engine plans"     --  "really works"   from an  ebay auction.  When I got the plans I recognized the engine right away.  The one I saw was owned by Todd Snouffer's son and he had it partially disassembled at the show.  Apparently he bought it at a flea market many years ago for $60.00 or so.  Tood said that he actually had his running some years ago.

 

I made the split pattern for the cylinder out of mahogany.  The crank case pattern is made from  2X4" pine.   This pattern is probalby the most complicated wood working I have ever done. I had to use the Lathe, the  Mill , and the table saw, and band saw!     There are lots of angles to watch considering  correct draft for pulling the pattern out of the sand.   The other patterns to be made are the 4-1/2" flywheel and the carburator/ intake manifold

 

Picture of the engine castings stacked in "assembly" with an original drawing from the article in the background.

 
 

 

A picture of the Cylinder head test casting and its pattern.   Pattern needs some tweaking.
 

 

 

This is the second Cast Iron flywheel and the plywood pattern for it,  The first pour did not go well, My home made sand mix was too wet.
 

 

 

Here is a picture of all the parts and patterns so far. Upper right is a crank case back half in the mold.

Here are couple of pictures of my latest work on the Midget engine.   I cast the carburetor/intake in brass today along with the timer frame.  The pattern for the timer was hardly dry when I stuck it in the sand~!   For a first pour on these patterns they came pretty good.