Quote:

I would think that the valve train would be RPM sensitive with no regard to load..... Correct me if I am wrong..... Remember I am a old Diesel guy here so these light weight go fast engines are kinda new to me

.. remember the old radial aircraft engines? the extra load of bombs would cause a larger load on the engine and it would not lift to a hi enough altitude to avoid enemy fire! the hi compression with hi loading was blowing out the spark ! Thank you Mr. C.T. mason for the invention / perfection of the magneto !! Dixie magneto corp.