Manufacturers of rackets
have been looking for many different ways to
add power to rackets. The aluminum
racket, the oversized racket, the graphite racket,
widebodies, and now extra long rackets.
A standard racket measures 27 inches, and the
rules permit a racket to be as long as 32 inches.
(Note: The International Tennis Federation has
proposed a reduction in maximum allowable racket
length from 32 inches to 29 inches). The new
longer rackets are typically about 28 inches
long.
Given that most tennis racket
manufacturers now produce a longer racket, it's
safe to say that this idea does work.
It seems to help add a little power to the serve.
The only tricky part is making sure that you
can still hit the same kind of stroke with the
longer rackets that you can with a normal racket.
It seems manufacturers have been paying attention
to this.

Take a racquet and find
the length half way. A racquet is typically
27 inches long so this is 13 1/2 inches.
If the racquet balances halfway, then it is
even balance. If it tilts to the racquet
head, it is head heavy. If it tilts toward the
handle, it is head light.
The balance of a racquet can make two racquets
of equal weight feel different. The head
heavy racquet will feel heavier than the lighter
one when you swing (think of the difference
in holding a hammer at either end).
A head light racquet is
better for serve and volleyers who need to move
the racquet quickly. A head heavy racquet
is a little better for baseliners who want to
place more mass behind the racquet. Most
racquets are only marginally head heavy or head
light.
Some terminology.
Find the half way point (13 1/2 inches).
If the balance point of your racquet is 3/8
inch closer to the racquet head than the halfway
point, then it is 3 points head heavy (1 point
= 1/8 inch). If the racquet balances 3/8 inch
closer to the handle, then is is 3 point head
light.

As a rule, the trend in
weight is toward lighter and lighter racquets,
particularly with the introduction of graphite.
Racquets right now weigh about 11 and 1/2 ounces
and decreasing with time. Some racquets
are even less than 10 ounces. The lighter
a racquet, the easier it is to swing. However,
light racquets place less weight behind the
shot, and hence you have to swing faster to
get a more powerful shot. This has
been the main way (along with balance) to tame
the power of widebodies.

Avoid impacts with hard objects or
court surfaces which may cause cracks or breakage
in the frame.
Racket bumper guards or head tape can protect
the racket from on-court scrapes. If the bumper
shows excessive wear or exposes the frame, replace
both the bumper guard and the grommet strips.
Off court, a cover or racket bag will help protect
the racket.
Store racket in a cool, dry place, away from
direct sunlight. Excessive heat, cold, or moisture
can damage your racket and strings, and sunlight
may fade the racket cover.
Do not store
the racket inside your car or in your trunk.
Synthetic strings begin to lose tension at about
110 degrees F (43 degrees C). On a sunny, 90
degree F (32 degrees C) day, the temperature
inside your car can soar to as much as 140 degrees
F (60 degrees C) which is hot enough to even
soften the resins in a frame and distort the
racket. If you are planning a game after work,
take your racket into the office; do not leave
it in the car!
Synthetic cushion
grips, while offering excellent absorption and
feel, will wear out.
A rattle in
your racket may be caused by some loose graphite,
this is not normally a cause for concern. Check
the butt cap for a trap door. Remove the trap
door, using a small-pointed hard object, and
tap lightly on a hard surface to release the
loose graphite.
If you feel
your racket has a manufacturing defect, return
it to the store where it was purchased.

Here
are 15 basic facts about racquets. This information
provided by the United States Racquet Stringers
Association.
These facts
are presented as generalities. While a stiffer
frame generates more power, a stiff frame badly
strung may generate less power than a more flexible
frame properly strung for power players. While
a heavier frame generates more power, it can
also decrease maneuverability.
1. A heavier
frame generates more power.
2. A heavier
frame vibrates less.
3. A heavier
frame has a larger sweetspot.
4. A stiffer
frame generates more power.
5. A stiffer
frame has a larger sweetspot.
6. A stiffer
frame transmits more of the shock load to the
arm than a more flexible frame.
7. A stiffer
frame provides a more uniform ball response
across the entire string plane.
8. A larger
frame generates more power.
9. A larger
frame is more resistant to twisting.
10. A larger
frame has a larger sweetspot.
11. Larger
frames break strings sooner due to the string
lengths.
12. Longer
frames have higher swing weight than the same
frames that are shorter hence the longer frames
are less
maneuverable.
13. Longer
frames generate more power than the same frame
that is shorter.
14. It is recommended
by the USRSA that widebody frames use multifilament
strings (i.e. "soft" strings) or gut
to
compensate for some of the stiff attributes
hence better playability.
15. It is recommended
by the USRSA to string widebody frames at lower
tension for better playability and to help
keep strings from breaking too soon.