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True Length Technology

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True Length Technology is a Registered Trademark of Dan’s Custom Golf Shop

 

 

MOI Matching

One important factor that sets IRBG apart from other custom golf shops is that we are the leader when it comes to using a computerized system of measuring and then matching the MOI (Moment of Inertia) of a set of clubs.

Basically, MOI matching ensures that all clubs in the set have similar swing characteristics to help optimize the way an individual plays the game. This is very important because if every club in the bag is MOI matched, the golfer will never have to worry about readjusting the swing every time they change to a different club.

What is MOI Matching?

The MOI of any object is a measurement of its resistance to being placed in motion. If each club in a set requires a different amount of force to swing the club (set it in motion), the golfer cannot be as consistent swinging each club in the set. Swing weight matching does not make each club within a set the same. MOI matching does. However, because golfers can be quite different in their strength, tempo and swing mechanics, the right MOI must be identified and fit for each golfer.

 

How MOI Matching Works

To understand what MOI matching is, consider how your automobile tires are balanced.  As you may already know, the standard way to balance wheels for many years was static balancing. The tire and rim assembly was put on a mechanical balance and leveled and balanced by “eyeballing” small bubble indicators.

The problem was that static balancing only considered the wheel’s balance when it is stationary, not rotating on the car at high speed, which is when balancing really matters. This is why auto shops use computerized spin balancing systems today to simulate the actual rotational movement of wheels on the highway.

The standard ways of balancing golf clubs has also been essentially static. The problem is that golf clubs, like the wheels on a car, are never static when you’re playing with them. Here’s where MOI Matching becomes important.

Our MOI matching system uses computer technology to accurately measure a club’s moment of inertia.  Once we capture the MOI data on one club, we then can use it to ensure that every club we build or alter has the same MOI.

The first step in creating a set by MOI is to determine what club in the individual’s present set is their favorite.  What club does the individual like the best; hit the best; develop the most consistent shot with; and/or feels the best.

Using highly technical equipment we then determine the specific characteristics of that club focusing its MOI.

Once the proper MOI is determined IRBG will build new or alter the individual’s present set so each club in the set has a similar MOI. This will insure that each club feel the same as the model club.

We prefer to treat each category separately. in other words, we will MOI match your irons as a set, and then MOI your woods as a set.

MOI-matched clubs often have a smaller-than-usual club length difference as you move up and down a set of irons, with a difference of  .375-.400 inches between clubs instead of the usual .500 inches between club lengths that is typical of swing weight matching. Another way to MOI-match is to adjust clubhead weights (via added lead weights inside the shaft tip) while leaving the normal 1/2" progression in length from club to club.

In an MOI-matched set of clubs, the swing weights will ascend from lowest in the long irons to highest in the wedges, as opposed to swing weight matching where the swing weights are the same throughout the set.

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Last modified: 09/08/08