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Beam
The beam of the racquet is the area on either side of the head. It does not increase
the overall length or width of the racquet, but is considered its thickness. Compareracquets by placing them flat on a table, and you will see that their designs may differ
in that some have wider beams than others. Wider beams can add power to your
shots, however, many say that a wider beam affects how the strings are contained
and, therefore, how they perform; thus, creating a greater flex, or "trampoline" effect,
that can affect control and direction of shots. General advice is to start with a thinner
beam and, once you advance your shots to a point that you are controlling spin, etc.
you can try a thicker beam to determine if it presents a good feel for your style, or if it
creates an adverse effect on your ball control.
Throat & Shaft
The open throat design has become a design standard in most of today's racquets,
eliminating the now-defunct past lollipop design (e.g., imagine today's badmininton
racquets, where the single main shaft is directly attached to the racquet head). The
open throat design was created to better stabilize the racquet head, better
compensating for off-center shots and, along with the larger head areas, has worked
to enlarge the effective sweet spot.
The shaft is the point at which the two sides curve down from the throat, where they
come closest to extend down directly to connect to the racquet handle. The throat,
as it goes down, becomes the shaft, and then joins to the racquet handle.
Grip
At the end of the shaft, it joins with the racquet grip. Different grip sizes are made
available for both hand size and best comfort preference. Grips range in diameter
between 4 and 4-5/8 inches. If you don't know which grip to select in your new
racquet, a popular rule of thumb is that, when you grip the racquet comfortably (but
not tightly), you should be able to take your thumb and touch the last knuckle joint
(i.e., closest to the nail) of your middle finger. If you are not certain which grip size to
select, always choose smaller, simply because the grip size can be easily enlarged
later using grip tape.
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Butt Cap
There is no performance function to the butt cap. It simply provides closure to the
racquet handle and creates a convenient place for placement of manufacturer logos.
Shape
Not all racquets are the same overall length. Although longer racquets give you more
reach and power to the ball (e.g., especially when serving), they also make the
racquet a little more difficult to control.
Other considerations when selecting the right tennis racquet...
Racquet Materials
We've come along way from the original tennis racquets made of simple wood
frames and pig or sheep intestines (for strings). Today's strings are still made using
advanced manufacturing (e.g., for consistent quality) of intestines from sheep, cows
or pigs; or they are made of a synthetic polymer.
Natural gut (i.e., intestine) strings are susceptible to damage from moisture or high
humidity and are more fragile than synthetic strings. Gut strings have a lower
elastic modulus, giving hard-hitting players extra power.
Today's tennis players use the latest racquets made of advanced engineered
materials.
Many of today's tennis racquets are made of carbon fiber composites. Thesecomposites have excellent strength-to-weight ratios, allowing for the development of
popular oversize rackets and heads. Some rackets are filled with polyurethane foams
to reduce vibration. Other rackets are hollow to decrease weight.
A whole smorgasbord of racquet materials awaits you at the sporting goods store.
You may need a little help sorting through the offerings, so here's a list of the most
common racquet materials you may encounter:
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Graphite The vast majority of racquets manufactured today use graphite in
one form or another as the base ingredient. Graphite is the technological
generation's equivalent of the trusty laminated wooden racquet that was so
popular until about the 1970s.
Graphite is remarkably strong for its relatively light weight. It provides terrific
power, as well as good control and feel for the ball. But graphite is best in a
composite mixture with any of the various thermoplastic- and fiberglass-type
resins used today. Graphite-composite racquets are great for beginners as
well as advanced players because stiffer racquets transmit shock and vibration
to the arm and shoulders.
Boron and Kevlar Both Boron and Kevlar fibers both resemble graphite, but
boron and Kevlar are even lighter and stiffer than graphite. Kevlar is best
known for its use to make bulletproof vests. Unless mixed with other materials,
however, Kevlar's stiffness can transmit a lot of shock and vibration to your
arm and shoulder, especially if you don't hit the ball on the sweet spot.
Aluminum This material is still used in less expensive racquets. Aluminum
offers decent power and a surprising amount of feel. Feel is the sensation you
get for how you're striking the ball and where it's going. Some racquet
materials are more sensitive than others to things like impact and vibration, so
they transmit information to you differently.
Titanium More recently, a new technology has emerged in the
manufacturing of tennis racquets - titanium. Made from a very strong,
extremely light material, titanium has been a hit with professionals and serious
recreational tennis players. Titanium is similar to aluminum. Either aluminum
or titanium is an acceptable choice for beginners.
Wood or metal alloys Low-cost tennis racquets may still be made made of
of wood or cheaper (weaker) metal alloys. Cheaper materials allow for lower
costs. Regaring the benefits you derive from the racquet, you get what you
pay for: very little.
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Most of today's racquets are much lighter than their predecessors; weighing in at
just 9 to 12 ounces. However, you should be able to feel the weight of the racquet as
it is a valuable tool to aid your hand-eye coordination. You need a racquet that you
can use comfortably, without feeling heavy; and light enough to allow you to
efficiently swing, thus allowing you optimal ball control.
As a beginner, you should devlop your tennis playing skills with a standard-length
tennis racquet (i.e., 27 inches) and then graduate up to longer racquets with wider
beams as you establish your preferences and feel for the ball, especially as you
developed advanced techniques.
The Tennis Ball
The inner layer of a tennis ball is made of polybutadiene, an elastomeric polymer,
which is reinforced with bits of clay, a ceramic. The outer cover of the ball is made of
nylon polymer fibers.
The sole of a tennis player's shoes is made of an elastomeric rubber polymer
compound which has been processed to withstand wear and tear.
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