The Craftmans Shop > Model Engineering
Side Valve i.c. engine from Bar stock
Brian Rupnow:
This will be my weekend chore----
Brian Rupnow:
Now I know what I DON'T want to be when I grow up!!!---A cooling fin slot cutter!! The .093" slitting saw works amazingly well, but at 0.100" depth of cut, thats 4 passes per fin-slot x 11 slots = One heck of a lot of cranking on a manual mill. The sparkplug is a 1/4"-32 Rimfire plug from Roy Sholl. I didn't get too crazy finishing the bit of combustion chamber inside the head. It will work just as well the way I have it as it would polished.--In fact, it might work even better. I am really pleased with the way the engine is looking.---Brian
Stilldrillin:
Taking shape, and looking good Brian! :thumbup: :clap: :clap:
David D
Brian Rupnow:
It's a bit late in the game to be figuring this out, but just for the heck of it I ran a quick calculation to see what the compression ratio on this engine was going to be. Without taking the heads of the valves into consideration, the compression ratio is a whopping 4.8:1----------That is about what I had figured it would be, but it's nice when the math confirms it.
Manxmodder:
:clap: :clap: Looking really good now Brian,keep the updates coming......OZ.
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