Recent content by JLD Co

Thank you very, very much. You confirmed my intuitive fear. I'm over my head. I'll consult with a PhD friend who owes me and let him read these responses. Much obliged.

Jack Action gave me what I specifically was looking for but there's is a whole lot of valuable information in your Engine Design pdf. Our team thanks you.

Now we're talking. There's my two angles. Thank you very much.

A piston, piston rod and crankshaft is a mechanism for converting linear motion into rotational motion...torque. Computing for torque when the angle of force on the lever arm (radial vector) is 90 degrees is simple: F X r (Force times the length of the lever). Computing for torque when the...

I'm comparing the torque developed by two different engine concepts. One is a new fandangled concept being built that lends itself to a simple torque equation F x r x sine theta (Force, radial vector of the crank, angle of Force) because it has only one angle of Force being applied to the...

Very helpful, thank you for that considerate response.

I've been incognito for a few days, please excuse the delay in responding. Very informative and helpful. Thank you for the input.

Thank you for you response. All engines vibrate to one extent or another. Is there no data that you are aware of regarding vibration's effect on efficiency? Like through the motor mounts or heat produced by the stress and strain on reciprocating components that is not friction related?

It has been stated in previous threads that engine inefficiencies are caused by: Pumping losses (induction and exhaust) Frictional losses (in bores, bearings, and ancilliaries) Thermal losses to exhaust, coolant (jacket, charge and oil), and surroundings Does engine vibration have an effect on...

My degree is in Literature, of all things. But I've worked in aerospace and R&D for most of my life. I've used this site on several occasions over the years and have always received thoughtful responses and invaluable information. Thanks y'all!