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Kevin Mills, Semmes AL, firstname.lastname@example.org 2/13/2011
Farm Boy by J E Howell
Hit and Miss, 1" bore 1.375 stroke
My friends dad "Richard Christian" has built many types of motors, many are on this site. I was always amazed at the attention to detail. Richard passed away a few years ago. His son and I was looking at all his projects and I decided I had to build one. I had the plans for a while, but just got started on it January 2011.
This is a couple pics of the spring fixture I made.
I needed .400 OD x 1.050 long .020 music wire with 7 turns.
The fixture OD ended up at .290 OD to achieve .400.
I made one end of the fixture 6 turns and the other 7 turns.
I stressed relieved in the oven at 500 degrees for 1 hour .
I made springs with .020, .025, and .032 music wire.
I made some with .015 wire, they where not as consistent and did not look as good as the others.
Copyright 2011, Florida Association of Model Engineers and engine builder as noted above, All rights reserved.