plans for a hit & miss engine
I have heard about a hit & miss engine made from a single cylnder gas engine like a verticle Briggs & Straton. Has anyone seen plans like this?
kymachine I don't have any plans for you but if you go to www.engineads.com you can find a forum to post that question. I'm sure someone can help you.
I have seen a couple of these. Basically, they just cut away the lower portion of the engine case so the crank and connecting rod are exposed and add oilers. As I remember, the regular ignition sysyem was discarded, a spoke flywheel added, and a simple battery/coil ignition system was used.
May see one next weekend, I'll try to get more details.
Last "old engine" show I attended, guy had made a hit and miss from an old air compressor. It was just for show- the fins etc won't get rid of enough heat to pull any load.
We discussed running it on propane (easier to get an ignitable mixture). He called back and said propane made things work much better and he had a little tank to catch the exhaust air/gas surplus and run a "torch".
Engine is now mounted on a flexible board so it will bounce. he tired of being asked "what does it do?" now he says it makes the board bounce.
air cooled, Low speed engine might be a faulty design in any case.
BTW, I use propane to start most hard to start gas engines while adjustingthe the carb. Just turn of the gas by screwing idle and power needles closed, afix a tube for propane near the carb throat, turn on propane and pull. Start lean and work up till it pops, then propane till it fires well. Then slowy turn on the gas, when engine gets rough, reduce the propane. When its weaned from propane you probaly have a easy starting engine (assumming spark and conpression are ok).