Two-Stroke Basics Visible Training Aid
I had to learn how a two-stoke engine worked when I started working on chainsaws. Went to the library and spent some time looking at books - took me a while to 'get it'. More information is available on the web now. But here is a simple training aid I made, for use in introductory chainsaw classes I sometimes teach, after seeing one posted on another site.
This is the cylinder from a cheap, garage sale, Homelite clamshell saw, cut in half to show the intake and exhaust ports, bearings, counter weight, transfer, etc. I also have the clutch and flywheel I can add on. Very easy to do with a hacksaw, vise, and a little patience. Even easier if you have access to a metal-cutting bandsaw and belt sander. I flattened the sides with 80 grit, then 120 grit sandpaper, then hit it with a ScotchBrite polishing wheel to smooth the surface, and eliminate sharp edges.
I added a handle to make it move. Compression is a little low - might have an air leak somewhere?
Philbert