RE: port timing
PIPEFATHER
THATS A FANCY FORMULA FOR THIS OLD MAN TO WORK OUT!!!!! IF THE PORT SHOULD BE NO MORE THAN 75% OF THE BORE DIA. WOULD THIS FORMULA WORK FOR SLOW THINKIN CAPS TYPIN OLD FARMER
BORE X .75
WOULD THAT NOT BE THE WIDTH OF THE PORT ON THE CORD LENGTH??
FARMER TED