What is non-conforming golf equipment?
December 10, 2009 by admin
Filed under Golf Equipment
I am new to golf and I am wondering how non-conforming equipment is different, and how does the equipment effect the game?
"A club, or part of a club, is required to meet a specification within the rules, it must be designed and manufactured with the intention of meeting that specification". Any club or ball that is not on the "LIST OF CONFORMING GOLF EQUIPMENT" is considered by the USGA to be non-conforming.
Some clubs and ball are designed as "novelty" equipment. They can give the golfer using them an unfair advantage against other players. Some non-conforming drivers have what is known as too much "trampoline effect" where the face of the club is too convex and springy to the point that the ratio of club head speed to ball speed is too broad. Some non-conforming balls are smaller than normal golf balls and travel farther than they are allowed to travel.
I hope this helps you.
I am a golf professional in NC and hope that you enjoy this great game that I have decided to spend my career trying to master. That being said, I do hope you decide to play by the rules. This is a game that you don’t have to be good at to enjoy. So there’s never a reason to cheat, because you will only be cheating yourself.
Take care. Tee it high and let it fly


The ones use to break out the windows in Cadillacs are definitely non conforming.
References :
Essentially it is equipment that has been rejected by the R&A golf club which determines the rules of golf.
This means you can’t use this equipment in any competition throughout the world on a golf course.
References :
"A club, or part of a club, is required to meet a specification within the rules, it must be designed and manufactured with the intention of meeting that specification". Any club or ball that is not on the "LIST OF CONFORMING GOLF EQUIPMENT" is considered by the USGA to be non-conforming.
Some clubs and ball are designed as "novelty" equipment. They can give the golfer using them an unfair advantage against other players. Some non-conforming drivers have what is known as too much "trampoline effect" where the face of the club is too convex and springy to the point that the ratio of club head speed to ball speed is too broad. Some non-conforming balls are smaller than normal golf balls and travel farther than they are allowed to travel.
I hope this helps you.
I am a golf professional in NC and hope that you enjoy this great game that I have decided to spend my career trying to master. That being said, I do hope you decide to play by the rules. This is a game that you don’t have to be good at to enjoy. So there’s never a reason to cheat, because you will only be cheating yourself.
Take care. Tee it high and let it fly
References :
USGA Rules of Golf. http://www.usga.org
The R & A and the USGA have met on many occasions to determine what is to be covered in the Rules of Golf and have established parameters regarding the golf club design as well as the golf ball . This is all covered in the Appendices to the Rules of Golf. Any club or ball which does not fall within the parameters is considered " non-conforming ".
References :
There are all kinds of ways a club can be nonconforming.
For drivers: clubhead has to fit inside a 5" x 5" box (can help with forgiveness); it can’t have a Moment of Inertia number (g x cm2) higher than 5900 (another forgiveness factor); it can’t have a Coefficient of Restitution number (trampoline effect of the clubface) higher than 0.83 (creates too much distance, per USGA and R&A); it can’t be more than 460 cubic centimeters in volume (yet another forgiveness factor).
Irons and wedges can’t have grooves larger than the currently allowed measurements- it adds too much spin- and that’s going to get even more strict next year.
A golf ball can be non conforming if it’s too heavy/light, too big/small, asymmetrical (not completely round), and fails to meet the initial velocity and overall distance standards set forth by the USGA and R&A.
References :
http://golf.about.com/od/rulesofgolf/a/conformingballs.htm
http://www.callawaygolf.com/Global/en-GB/CustomerService/ConformingandNon-ConformingDrivers.html