Set of Iron Clubs with Constant Ground Roll

Abstract

A set of iron clubs where each club in the set has the same or substantially the same ground roll. The set is produced by adjusting at least two club design characteristics of the clubs based upon measured or assumed player swing data. The design characteristics of the clubs include club length, static clubhead loft, location of the center of gravity, shaft flexibility, and groove volume. Preferably, club length and static clubhead loft are adjusted for coarse adjustments, while the other characteristics are used to fine-tune the design.

1 . A set of iron-type clubs comprising at least two clubs, wherein a ground roll distance produced by each of the at least two clubs is substantially the same. 
   
   
       2 . The set of clubs of  claim 1 , wherein the iron-type clubs are muscle-back clubs. 
   
   
       3 . The set of clubs of  claim 1 , wherein the ground roll distance of each of the at least two clubs is within one yard of a target ground roll distance. 
   
   
       4 . The set of clubs of  claim 1 , wherein one of the at least two clubs has a first club length of between about 38 inches and about 42 inches and a static clubhead loft of between about 25 degrees and 27 degrees, and wherein the other of the at least two clubs has a second club length of between about 32 inches and about 35 inches and a second static clubhead loft of between about 38 degrees and about 42 degrees. 
   
   
       5 . The set of clubs of  claim 4  further comprising at least one additional club having a third club length of between about 37 inches and about 39 inches and a third static clubhead loft of between about 30 degrees and about 33 degrees. 
   
   
       6 . (canceled) 
   
   
       7 . (canceled) 
   
   
       8 . (canceled) 
   
   
       9 . (canceled) 
   
   
       10 . (canceled) 
   
   
       11 . (canceled) 
   
   
       12 . (canceled) 
   
   
       13 . (canceled) 
   
   
       14 . (canceled) 
   
   
       15 . (canceled) 
   
   
       16 . (canceled) 
   
   
       17 . (canceled) 
   
   
       18 . A set of iron-type clubs comprising at least two clubs, wherein a ground roll distance produced by each of the at least two clubs is substantially the same, wherein a first club is a 3 iron having a loft of about 25 degrees and a shaft length of about 41 inches and a second club is a 9 iron having a loft of about 40 degrees and a shaft length of about 34 inches and the remaining clubs within the set have lofts and shaft lengths therebetween.