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If ya suck ice or even snow into the motor, even in small amounts, the
piston will heave for a second. This will cause skuffing on the piston, just on the wrist pin sides. Seen it many times on sleds. Would almost shurly cause ring sticking instantly. When leaning occurs slowly, it tends to elevate the egts. But when leaning is rapid, loss of fuel will bog down the motor quickly and egts will read lower. Wonder if any of the additives in fuel now change this. Q wrote: > I fly a powered parachute with a 582 and have experienced carb icing on > several occasions. Each time the temperature was near or below 32F with fog > in the area. Symptoms are always a lowering of the EGTs and a gradual loss > of power. The first couple of times it happened I wasnt sure what was going > on and got within 20 feet of setting it down on a rural road before the ice > broke loose and the engine regained some power. Now when flying in those > conditions I keep one eye on the EGTs and when they start to drop I open and > close the throttle several times to break the ice off the slide. You can > actually feel it break off and hear it go through the engine. If you try > this be sure not to wait too long or you could break the ends off the > throttle cable with the force it takes to move the slide. > > Q > > "Ken Kennedy" > news:3A529823.E173448D@sympatico.ca... > > I wasnt suggesting flying in single digits. If the temperature rises to a > > balmy 32 or so and its foggy, why not go flying in the interest of > > science? (Id do it myself but I am already convinced that engine problems > > are likely in those conditions, and Im a BIG chicken). |
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