Chainsaw Repair

As a point of debate rather than  a point of argument a leaner mixture again to a point burns more completely or as much as possible.However under loaded conditions it's a shorter burn all things considered .Richer burns at a lower temperature burn longer but again with the right air mixture .Again it takes fuel to make power but at the correct air to fuel ratio

During WW2 the British Spitfires and US P 51 Mustangs ran Rolls Royce Merlin engines which were water cooled .Often they got shot up ,lost the coolant ,ran hotter than a fire cracker but ran in spite of that.A Merlin was one tough old engine .A trick they learned to limp across the English channel full of bullet holes  was to slightly pull  the choke out to induce a richer  mixture allowing them to make it back under decreased power blowing black smoke and drinking huge amounts of fuel .That little trick saved the lives of many US  army air corps and RAF pilots .How many ditched in the channel I have no idea nor do I of those the cylinder temperature rose so high it locked up the engines

Keep in mind the glid ratio of a Mustang at 175 MPH  is  15 to one .If they somehow had enough power left in those shot up engines and could only maintain 1000 feet of altitude and it died on the vine they only had about three miles until they splashed down .Not good .

Now of course all this superfluous trivia has nothing to do with "4 cycling "