Would somebody please explain how the aircraft engine designations which I'm assuming are cubic inches such as a continental 220 or a lycoming 540 equate to actual horsepower. For example, I saw where a lycoming 235 is approx 115 hp and where I believe a cont 300 is approx 150 hp. Is there a ratio there I can use as a rule of thumb? It seems that the hp is approx 1/2 of cubic inches. Is this right? If that's the case then the cont 220 is approx 110 hp and the lycoming 540 is 270 hp.
I hope this is not too stupid a question.
Thanks
I hope this is not too stupid a question.
Thanks