I am in love and 77.
Aint she beautifull?
Swan-120 UL 103
She is powered by dreams and means of old man and a Polini Thor 8500 rpm two stroke
36 horsepower at 40 rps to a two-bladed prop of 1500mm diameter.
Two counterrotating 1140mm props 700 mm apart will have same efficiency .
A Junkers type with 80mm bore and 120mm strokes turning 55 rps will make same propeller noise(Very low) and have a mean piston speed comparable to the one and only Rotax 912.
Svept volume is 1.2 litre and maximum combustion pressure is half of a WW2 /Hirth 504 that was 25 kg per litre dry.
My Freja engine will be 15 kg dry.
Synchronisation will be done by a crossed bicycle chain.
That was the very smart trick that made the Wrigth first flyer possible.
Mean effective pressure needed is 4 bar and there is thus no fuel escaping through open exhaust.
Aint she beautifull?
Swan-120 UL 103
She is powered by dreams and means of old man and a Polini Thor 8500 rpm two stroke
36 horsepower at 40 rps to a two-bladed prop of 1500mm diameter.
Two counterrotating 1140mm props 700 mm apart will have same efficiency .
A Junkers type with 80mm bore and 120mm strokes turning 55 rps will make same propeller noise(Very low) and have a mean piston speed comparable to the one and only Rotax 912.
Svept volume is 1.2 litre and maximum combustion pressure is half of a WW2 /Hirth 504 that was 25 kg per litre dry.
My Freja engine will be 15 kg dry.
Synchronisation will be done by a crossed bicycle chain.
That was the very smart trick that made the Wrigth first flyer possible.
Mean effective pressure needed is 4 bar and there is thus no fuel escaping through open exhaust.
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