Gallery, Projects and General > Project Logs
New Compressed Air Hit n Miss Engine
Bernd:
Keep drilling holes in it and you'll have a "wiffle ball". :lol:
Nice work so far. :thumbup:
Bernd :thumbup:
cfellows:
Here's another video, this time in hit n miss mode. It's hitting every 3rd revolution of the cam which is every 6th revolution of the engine. Since I posted this video, I've made a couple of changes. I opened up the inlet passages from 5/32 to 3/16". I think I have one more place, the hole in the side of the valve which is still 5/32 which I will check later. Now it's hitting about every 4th revolution. I'm also going to add an o-ring to the piston and see if that helps. But for now, it runs pretty good.
http://www.youtube.com/watch?v=hNC36MoBCyw
Chuck
Brass_Machine:
Chuck...
Very nice. Again, have you given thought to putting all your plans and designs into a book? I know I would buy one.
Watched the videos. Engine sounds great. In hit/miss mode it has a cool rhythm. My wife thought I was listening to a song on low volume :headbang:
Eric
BiggerHammer:
Very nice, one you should be proud of. Excellent on the governor.
cfellows:
I'm considering this engine completed. Took me a couple of days less than a month from start to finish. After the last video, I opened up all the inlet air passages to 3/16" and also added a single o-ring to the piston. With those mods and a little breaking in, the engine will now coast between 10 - 12 revolutions between power strokes. Don't think I can do much to improve it now except maybe bore it out a little, but I think it sounds fine as is. Here's the final video:
http://www.youtube.com/watch?v=oR8q_vDgXD0
Recap: 1" bore x 1.5" stroke, flyball governor (5/8" balls), 7.25" flywheel
Chuck
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