MOI Matching vs Swingweighting
Don Bonrud January 21st, 2011
Since the beginning of modern day golf clubs, swingweighting has been the method used to weight match a set of golf clubs. Swingweighting a set of golf clubs means building all of the clubs in a set to feel the same in regards to headweight during the golf swing. The golf club is put on a swingweight scale and weighed. The weight is recorded by giving a letter and a number. The letter and number combinations for example could be C9 or D1. The higher the letter and number, the heavier the head feels in relation to the rest of the club. In a swingweighted set of clubs if a 3 iron has a swingweight of D0, the rest of the clubs would also have a swingweight of D0.
Moment of Inertia (MOI) in terms of a built golf club is a measurement of how much force it takes to swing the golf club around your body.
MOI (Moment of Inertia) adjusted clubs progress in weight as the club gets shorter requiring the same force or effort to swing a 9 iron as it does to swing a 3 iron. The result is a more consistent swing, more consistent center hits on the clubface, and ultimately better shots that result in lower scores.
To find out what the right MOI is for you consider your favorite club. We all have a go-to club that we use when we absolutely have to hit a good shot. It’s the club in which we have the most confidence. We measure that club for swingweight and total weight and then using our MOI matching scale and computer software build the other clubs in the set to the same MOI as the favorite club. The result would hopefully be a complete set of favorite clubs.
