The
Recurve Bow
The
Recurve bow owes its name to the shape of the limbs, the
working parts of the bow. When strung, they curve away from
the archer back towards the target. This extra curve to
the limb increases the energy storage and efficiency of
the materials, resulting in greater arrow speed for a given
draw weight and a smaller bow.
The
modern recurve bow is made up of several components. These
include...
The Riser
This is the heart of the bow. The Riser, or handle of the
bow is the main component to which all other parts are attached
and forms the main body of the bow. Risers are available
in a wide range of styles and a range of materials. Beginners
bows are usually made from wood or high strength ABS plastics.
Intermediate risers tend to be cast or forged metals, and
more advanced risers are most often machined from a solid
billet of high grade alluminium for great strength while
being as light as possible. Recently, top end risers are
available that are manufactured entirely from carbon materials.
These offer incredibly light weights while maintaining the
strength of thier metal counterparts.
The
Limbs
These are the working parts of the bow. Most modern bows
incorporate the ILF ( International Limb Fit ) system, whereby
limbs slot into the ends of the riser with a dovetail mount
sliding into place to lock the limb, and the end moving
underneath an adjustment bolt to secure it. Limbs are available
in a wide range of weights and materials. You can get limbs
as light as 15lb for beginners up to 50lb for the heavyweights
among us! Limbs are made from multiple laminations of different
materials, including wood, glassfibre, carbon and syntactic
foams in the more advanced options. Depending on choice,
limbs can range from £40 for beginners wooden limbs
up to £400 for carbon and foam advanced limbs!
The
String
Lets not forget this vital piece of equipment, often overlooked
in its importance! Modern bowstrings are manufactured from
high strength polymers and fibres such as Dyneema, Spectran,
Kevlar in some older strings and Dacron to name a few. These
modern materials offer incredible strength at very low weight
and thickness. Multiple strands are used to maintain stability
and strength, with the end loops and the middle section
where the fingers sit wrapped in a material called serving
to protect and reinforce these areas from wear.
Arrow
Rest and Button
The arrow rest is fitted to the bow window ( that is, the
area on the bow that the arrow passes when shot ) and the
arrow rests upon in until shot. There are a wide range available
but all fulfill the same basic funtion. The Button, also
known as a Berger button after its inventor Vic Berger,
or the Plunger is a device that is screwed through the bow
from the side opposite the arrow. This is the tube that
can be seen sticking out on an olympic shooters bow. The
purpose for the button is to absorb the sideways movement
of the arrow when fired due to the string moving off the
fingers ( known as archers paradox ) and to decrease lateral
movement of the arrow. While this all sounds complicated
it can be easily demonstrated, and can be used to fine tune
arrow flight for optimum performance. A button is not neccessary
if you do not wish to use one, but they are recommended
for the tuning they offer.
The
modern recurve is shot in 2 main configurations. Recurve,
also called Freestyle Recurve or Olympic recurve as it is
the only bow style currently allowed in Olympic competitions.
This style allows for accessories to be used to aid the
archer. These include stabilisers and sights. Most modern
recurve risers are designed to be shot in this manner and
will be balanced to perform best when set up with stabilisers
and weights.
The
other style for the recurve bow is Arco Nudo, better known
as Barebow. This limits the user to just a riser, limbs,
string and a button if you want one. This style of archery
is far more instinctive, akin to longbow shooting but making
use of the modern bows efficiency. This style is very popular
among field archers.
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Asiatic
Reflex Bow
Europeans
encountered the many forms of this bow as they came into
contact with the nomadic peoples of the vast Eurasian steppe.
Throughout the ages, wave after wave of these horse archer
based armies rode into settled eastern Europe and brought
great destruction. From the ancient Scythians to the Mongols
and finally the Ottoman Turks, the composite bow was the
main weapon.
The Scythians are generally recognised as introducing the
reflex horn bow, though composite bow types were used by
the ancient Egyptians and Assyrians.
The Scythian bow was of typical 'Cupid' shape, featuring
highly recurved limb tips. Constructed differently to later
Asiatics, it was often made up of many horn pieces attached
to a wooden core, the entire thing cross spirally bound
with sinew.
The Hunnic bow was larger. It had wide limbs to which rigid
tips (siyah) were fitted. Many finds have shown amazing
craftsmanship with splices and bone stiffening plates at
the siyah and handle section. The belly of the limbs were
covered by a horn strip or strips and the back with sinew.
This made the bow very powerful and the arrowheads became
bigger as a result.
As Hunnic power waned, another Turkic federation arrived,
the Avars. They settled the Carpathian basin but were around
for longer, some 200 years, during which time their bows
evolved from something similar to the Hunnic design into
a shorter bow with more reflex in the siyahs.Again, their
arrowheads were large.
The Magyars were the last nomadic people to settle this
area, with similar bows featuring lighter siyahs of typical
Magyar shape. Various horse archers, Khazars, Pechenegs,
Qipchaqs raided from the western steppe until utter devastation
arrived as the Mongols invaded Russia and Hungary. The typical
'Mongol' design with string bridges is actually more of
a later Chinese 'manchu' innovation.
The Asiatic reflex bow reached its zenith with the elaborate
Turkish bow where the recurved siyahs are spliced well into
the limb section forming a rigid and a working part in the
limbs. Unstrung, these bows were pretzel shaped and when
strung they become a short deflex, reflex shape. Traditionally
there were three different types...war, target and flight,
each with subtle differences.
From the time of the Avars, thumb rings began to appear
which would suggest this became the predominant method of
drawing these bows, however this was by no means exclusive,
the Huns before them left no evidence of thumb rings and
the Magyars are believed to have used their bows in the
western fashion. Turkish archery, Chinese and Korean all
feature the thumb draw.
There are many modern reproductions of these bows using
modern materials like glass fibre and TRH laminates to achieve
similar performance to the sinew and horn of the originals,
this makes the bows very affordable. A true composite made
in the traditional way is very expensive and requires some
knowledge to maintain.
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Full
details of the different bow styles and the restrictions
and regulations for each can be found in the GNAS rulebook,
which is available to download from www.gnas.org