Occasionally a customer will ask me to shorten or lengthen a club or a set of clubs. Usually the reason is the club or clubs feel either too long or too short for the person. What they often don't realize is changing the length also changes other characteristics of the club.
An example would be a customer wanting his driver shortened from 46 inches to 44 inches for more control. His current driver has a swing weight of D-1 and a shaft frequency of 260 CPM. Shortening the club by 2 inches will change the swing weight to a C1, the shaft is stiffer and the overall weight of the club is now lighter. Lengthening the club will have the opposite effect. The swing weight will be an E-1, the shaft will be softer and the overall weight will be heavier. In both cases the club now feels totally different and would be virtually unplayable.
Components of club heads and shafts are designed based on that club being built to a specific length. This is to assure maximum performance, consistency and feel for the player.
Custom fit clubs are often built with shorter or longer lengths. However, in these cases the manufacturer will pick the proper gram weighted heads and either soft step or hard step the shafts to insure the proper weight, flex and feel of the clubs so they will perform correctly.
If you are considering changing the length of your club or set make sure to talk to a professional before doing so.