LynnBlakeGolf Forums - View Single Post - Understanding 1-L Thread: Understanding 1-L View Single Post #7 02-08-2011, 02:14 PM Mike O Senior Member Join Date: Jan 2005 Location: Oceanside CA Posts: 1,398 Originally Posted by wilsmatt Two questions re 1-L: 11. "Clubhead force and motion is on plane at right angles to the longitudinal C.O.G and varies with the speed, mass, and swing radius." What, in the golfswing is longitudinal COG? or is there a better way of explaining that aspect of the machine. Look up Sweetspot in the Glossary of the Golfing Machine. Essentially the lengthwise center of mass of the golf club. If you let a golf club hang from the grip end and also have a weighted string hanging from the grip end - the string would show you the longitudinal center of gravity of the golf club and the point in which it passes through the clubface is the sweetspot. If you tap on the face to the left or right of the sweetspot - everything will rotate around that longitudinal center of gravity. P.S. The only reason Drew is posting is to stay ahead of me in total posts - just an FYI for those interested. __________________ Life Goal- Developing a new theory of movement based on Brain Science Interests - Dabbling with insanity Hobbies- Creating Quality Mike O View Public Profile Send a private message to Mike O Find all posts by Mike O