2 1/2 hp Gray Hit & Miss Engine
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Uploader Comments (Cletrac)
All Comments (12)
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It appears to lead a life of its own,without any rhyme or reason:wonderful!
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@Squarerig it only fires when it needs to
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almost has a musical tone to it...
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Who invented this strange primary power source?And where?Does it have advantages over normal 4 stroke engines?Is it more economical?In anticipation of assistance my thanks in Voraus!
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@butnut11 There is no vacuum on the coasting cycles due to the exhaust valve being held open.
The engine will not stall under a normal load. The governor will allow it to fire more often as the load increases to the point where it will fire at every fourth cycle.
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But by todays standards wouldnt they still be pulling in fuel through a vacume on the coasting cycles? what was the point of the coast cycles? Wouldnt that be loosing hp during the decreased rpm's? Or did they just not know how to make it fire on a continious 4 stroke firing pattern? I know the heavy flywheel kept the engine spinning but under a load it seems that it would bog down and stall very easily.... Thanks for the initial answer......
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Why the appellation "Hit and Miss"?
Squarerig 1 year ago
@Squarerig "Hit & Miss" describes the governing system. See the other comments for an explanation.
Cletrac 1 year ago
Wow I just found these, and am facinated by them. Can someone tell me how these work exactly and what they were used for? Thanks.
butnut11 2 years ago
These engines were used as portable power sources around the farm. They were belted up to whatever machine was needed at the time.
It is basically a four cycle engine with the speed being governed by holding the exhaust valve open and allowing it to coast. Hence, the name "hit & miss".
Cletrac 2 years ago