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Blog posts of '2011' 'March'

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USGA Golf Ball Rules - Sunday, March 27, 2011
USGA Golf Ball Rules 

Knetgolf is the world’s largest internet retailer of premium used and recycled golf balls. Each of our golf balls are cleaned and hand sorted, selling you the top 10%. With over 200 different types of balls, Knetgolf has satisfied over 200,000 customers annually. In order for you to better understand the golf ball, Knetgolf has written a short article on the USGA ball rules. 

Technology and Golf Ball Design:
With the rapid advancement of golf ball technology, there must be a limit to how technologically advanced one can make a golf ball. The USGA has set several guidelines regulating the construction and design of golf balls. 
To be recognized and approved by the USGA, a golf ball must meet the following standards:
 
Golf Ball Weight:
According to the USGA Rules of Golf, the weight of the golf ball shall not be greater than 1.620 ounces avoirdupois (45.93 gm). 
The heavier the ball (to a point) the less it can be slowed downs by air resistance and therefore the further it would tend to fly. Hence the majority of the manufacturers produce golf balls with the maximum allowed weight of 1.620 oz./ 45.93 g.
 
Golf Ball Size: 
According to the USGA Rules of Golf, the diameter of the ball shall not be less than 1.680 inches (42.67 mm). 
A smaller golf ball will generally fly further than a larger one given the weight is equal. The reason for this is: having a smaller diameter ball means less air resistance. Moreover, the majority of the manufacturers produce golf balls with the minimal diameter of 1.680 inches / 42.67 mm.
 
Spherical Symmetry of the Golf Ball:
Golf balls must not be designed, manufactured or intentionally modified to have properties which differ from those of a spherically symmetrical ball.
 
Golf Ball Initial Velocity:
The initial velocity of the ball must not exceed the limit specified when measured by the USGA.
 
Golf Ball Overall Distance Standard:
Overall Distance Standard for golf balls is on file with USGA.
For the most part, all balls sold in the United States meet the above criteria and earn a place on a document known as the United States Golf Association (USGA) Conforming List — which includes many hundreds of models of golf balls.

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An Introduction to Golf Ball Types - Thursday, March 17, 2011

Golf Ball Construction

Knetgolf is the world’s largest internet retailer of premium used and recycled golf-balls, selling over 200 different types of golf balls and satisfying over 200,000 customers annually. In order to help you better understand the golf ball, Knetgolf has written an in-depth article answering some of the questions about golf-ball construction.

What's inside a golf ball? 

If you are like most of the rest of us, then you’ve thought at some point of another about what’s inside a golf ball. There was a time when it was an easy question to answer, for golf ball construction was relatively simple.. 

Evolution of Golf Ball Construction

With the first recognizable form of the game of golf being played in Scotland in the early 1400's, the common golf ball has had nearly 600 years to evolve. Golf ball construction has been through many upgrades and enhancements throughout the history of the game.    

Golf Balls Throughout the Ages

There are four distinct stages in the evolution of the golf ball.

Wooden Golf Balls...

With the game of golf getting its roots on the East Coast of Scotland, the first golf balls were made of wood. Wooden clubs were also often used in conjunction with these balls.

Wooden golf balls were used from the mid fifteenth century until the seventeenth century, when the feathery ball was invented.

Feather Stuffed Leather Covered Golf Balls...

In 1618 a new type of golf ball was created by handcrafting a cowhide sphere stuffed with goose feathers. The 'Featherie' golf balls were manufactured while the leather and feathers were wet.

The time-consuming processes involved in creating a Feathery golf ball ensured that the price was out of reach of the masses. Though expensive, this type of ball had great flight characteristics and made the wooden ball virtually obsolete. For over three centuries the Featherie was the standard, only to be replaced with the advent of the Gutta Percha ball.

Gutta Percha (Gutty) Golf Balls...

In 1848 Dr. Robert Adams began creating golf balls out of Gutta Percha "Gutty". The Gutty golf ball was derived from the dried sap of the Sapodilla tree. It had a rubber-like feel and was formed into ball shapes by heating it up and shaping it while hot.

Almost by accident, it was discovered that golf balls with improperly smoothed surfaces often flew straighter and further than their smooth counterpart. This gave birth to the hand Hammered Gutta Ball. These golf balls were hammered with a consistent pattern throughout with a sharp edged hammer.

Rubber Core Golf Balls...

The advent of the rubber core golf ball changed the face of the game of golf as we knew it. This new design was invented in 1898 by Coburn Haskell in association with the BF Goodrich Company. This new and unique golf ball construction and design featured a solid rubber core, high tension rubber thread wrapped around the core, and a Gutta Percha cover.

This new breed of golf ball also featured a much larger variety of outer designs for improved airflow. The mesh, reverse mesh and Bramble designs gave way to the dimple pattern first used in 1908.

Modern Golf Ball Construction

The first automatic winding machine was patented in 1900 by John Gammeter. This allowed the rubber core golf ball to be economically mass produced. From the original wooden ball to the modern rubber-cored , the evolution of the golf ball has changed the way we play the game of golf. 

Wound Golf Ball Construction

Wound golf ball construction is when golf balls have rubber thread wound around

one of two kinds of cores: a liquid center, where the core is liquid-filled; or a solid center, in which the core is made of synthetic rubber. This is then wrapped in either a balata, surlyn or another cover whereas Balata covers are rarely made nowadays. The answer to golf ball construction is no longer simple. Many golf ball manufacturers today use different types of materials in the core and even the cover of their balls. 

The characteristics of wound golf balls is greatly influenced by the combination of the core and cover material. Generally speaking wound balls are excellent when it comes to spin effect but perform poorly when it comes to carry or distance. Moreover, due to the soft cover materials used to increase the effect of the winding around the core, wound golf balls lack durability. 

One Piece Golf Ball Construction

One piece golf balls are golf balls made of a single, high-restitution synthetic rubber

Two Piece Golf Ball Construction

Two piece golf balls are dual-structure golf balls in which a high-restitution core is wrapped in a cover. This configuration enables the energy at

impact to be transferred efficiently to the ball in flight.

While the core of a two piece golf ball is made of a resin type material, the cover has an extremely durable surlyn coat. Manufacturers keep putting an enormous amount of money into the development of new materials that could be used for core and cover such as titanium for example. A harder golf ball will not be compressed as much on impact, which is usually the case with a 2-piece ball, and will tend to slide further up the face of the club head resulting in an higher take-off angle.

Multi-layer Golf Ball Construction

Multi layer golf balls are multi-layer golf balls in which the core material is wrapped in multiple covers. As a result of the latest advances in technology, manufacturers are now able to flexibly combine materials, degrees of hardness, specific gravity, and so on, in ways that enhance a variety of performance features

Three Piece Golf Ball Construction

3-piece golf balls or Multi-Layer Balls are usually made of a large synthetic core, a thin mantel and a coat.

For optimized weight centering some manufacturers use Tungsten-weights in the centre of the synthetic core. A golf ball which is compressed more on the clubface like most wound balls will not slide up the face as much. Because of the ball's greater deformation the reshaping process is more dynamic and the ball has a flatter take-off angle, a higher rate of rotation, more lift and therefore a higher trajectory.

A three-piece golf ball is generally spins more sideways than a 2-piece ball.

Four Piece Golf Ball Construction

4-piece golf balls or Multi-Layer Balls have a small inner core surrounded by the actual core (synonymous with the 3-piece ball design).

This inner core is surrounded by a thin inner mantel which transmits the relevant distance characteristics from the coat to the core and is thus responsible for that special Balata-feeling.

Golf Ball Dimples and Aerodynamics

All golf balls are designed with dimple patterns on the cover to optimize the balls aerodynamics. The dimples can control many different aspects of shots like distance, velocity, spin control, straightness and trajectory.

Golf Ball Drag

There is two types of drag behind a sphere when it is airborne, laminar and turbulent. Laminar flow occurs over a non-dimpled golf ball and the air separates very early in front of the ball, resulting in less carry. A turbulent flow will occur with a dimpled golf ball because it causes the air to not split as soon and increases the pressure drag. Pressure drag is the air separated behind the golf ball.

Golf Ball Lift

A golf ball's dimples also assist with the ball's lift because they can keep the flow 'attached' while the golf ball spins backward. The backspin increases the speed of the upper surface of the golf ball with less friction than the bottom of the golf ball, which decreases in speed due to more friction. The air that passes over the golf ball gets dragged around to the back of the ball, producing its lift.


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Golf World at a Glance, March 10th, 2011 - Thursday, March 10, 2011

Happy Thursday to all our faithful customers out there!

We’ll start today with Tiger Woods. Tiger has been practicing to overhaul his swing, his third swing change in his career. However, it doesn’t look like things are going too well for the ex-champion. His new coach Sean Foley filmed Tiger’s new  swings Wednesday morning during a practice that unfortunately produced staggeringly wayward shots. It doesn’t look like Tiger’s winning drought is going to end anytime soon.

Tiger hasn’t been playing a lot either lately, and when he teed off Thursday in the Cadillac Championship at Doral, it was only his 10th competitive round of the year, an unusually low number with the Masters around the corner. And what’s the reason? Family matters. Tiger says that being a divorced dad can be difficult, and that if you’ve ever been divorced and had kids, you’d understand. It just proves that his family life is developing along with his golf swing. Tiger is now fifth in the world, with Graeme McDowell in fourth,  Luke Donald in third and Lee Westwood in second.

 

As for the golf world’s new #1,  Martin Kaymer celebrated his rise without ever leaving America.The 26-year-old German has a home in Scottsdale, Ariz., which is where he spent last week after his runner-up finish in the Match Play Championship that allowed him to replace Lee Westwood atop the ranking. His brother, a friend, and his father flew in from Germany to congratulate him. There’s no better way to celebrate than a surprise reunion with loved ones.


The LPGA Tour has now signed a three-year deal with CME Group for it to be the title sponsor of the season-ending Titleholders tournament in Florida. CME has previously been involved with the LPGA Tour by hosting pro-am events and sponsoring the SolheimCup. The Title Sponsorship will be giving the LPGA a big boost in the sagging economy.


Miles Davis is taking over as executive director of the U.S Golf Association. The USGA announced Wednesday that it had selected Davis to be it’s seventh executive director, replacing David Fay, who retired in December after 21 years in charge. Davis has been the senior director of rules and competition since 2005. Congratulations on your promotion, Mr. Davis!


And now, for a little bit of sad news. Another big name in the golf industry has passed away. Frank Chrikinian, the longtime golf producer for CBS has passed away  at the age of 84 at his home last Friday. Chrikinian helped turn the Masters into one of the most watched events in sports television. The television pioneer, who died after a long bout with lung cancer, was elected into the World Golf Hall of Fame  in the lifetime achievement category just last month after it first became widely known that he was undergoing cancer treatment .Knetgolf.com sends our  condolences to the friends and family of Mr.Chrikinian


And that’s it for today, hope you all have a lovely weekend.


Tee Off!


-The team at Knetgolf.com.


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