enginehistory.org

Not particularly to defend Lycoming, but I'd like to share a thought on the topic. I note that Herschel Smith, in his book A History Of Aircraft Piston Engines complains several times that more moder ...

Lots of good info in the answers.com link. Thanks!

I recall from the leaded gas days that spark plugs would acquire white or gray deposits, presumably largely lead oxide which we don't see in engi ...

An acceptable approximation in many cases is that 1 psi is approximately equal to 2" Hg and (the old math teacher in me shudders). While Kim's numbers above are much more accurate, very roughly, stan ...

Sorry for the math error; my question was posted late at night. Nonetheless, for a poppet-valve engine 320 degrees would be tremendously long opening duration. Kimble's comment about the piston havi ...

Out of curiosity, is that somewhat typical timing for a sleeve-valve engine? The exhaust duration of 340 degrees seems huge, especially for a relatively low-RPM engine.

Excellent point. Although, what about the diameter of the props? I haven't found anything specific about the prop size on the 38, but I did find vague references that suggest the later 47s had a 13' ...

Is it because the the V1710s had significantly less power under normal operating conditions than the R2800s? From what I've read, without the paddle blades, the R2800s were somewhat overpowering the ...