Body cord
Encyclopedia
In fencing
, a body cord serves as the connection between a fencer and a reel of wire that is part of a system for electrically detecting that the weapon has touched the opponent. There are two types: one for epee, and one for foil
and sabre
.
The three wires of the body cord are known as the A, B, and C lines. At the reel connector (and both connectors for Épée cords) The B pin is in the middle, the A pin is 1.5 cm to one side of B, and the C pin is 2 cm to the other side of B. This asymmetrical arrangement ensures that the cord cannot be plugged in the wrong way around.
The A line is the "lamé" line, the B line is the "weapon" line, and the C line is the ground. Although it works somewhat differently for each weapon, a valid touch always involves the connection of the A and B lines. In all three weapons, the C line is connected to the body of the weapon, and sometimes (normally in high-level competition) to the fencing strip as well, which must be made of metal in this case.
In foil, the A line is connected to the lamé and the B line runs up a wire to the tip of the weapon. The B line is normally connected to the C line through the tip. When the tip is depressed, the circuit is broken and one of three things can happen:
In Épée, the A and B lines run up separate wires to the tip (there is no lamé). When the tip is depressed, it connects the A and B lines, resulting in a valid touch. However, if the tip is touching your opponents weapon (their C line) or the grounded strip, nothing happens when it is depressed, as the current is redirected to the C line. Grounded strips are particularly important in Épée, as without one, a touch to the floor registers as a valid touch (rather than off-target as in Foil).
In Sabre, similarly to Foil, the A line is connected to the lamé, but both the B and C lines are connected to the body of the weapon. Any contact between your B/C line (doesn't matter which, as they are always connected) and your opponent's A line (their lamé) results in a valid touch. There is no need for grounded strips in Sabre, as hitting something other than your opponent's lame does nothing.
s feature a small hole designed around the use of a body cord. In officially sanctioned tournaments, the plug that fits into the weapon must be secured with an additional device, usually a small clip.
The other end of the wire is connected to the reel, as well as a D-clip on the fencer's jacket to prevent it from disconnecting during a bout. In addition, foilists and saberists must connect their alligator clips to their lamés. Fencers are forced by regulation to attach the lamé clip to their weapon arm side to prevent accidental or intentional removal.
Regulation also stipulates that any fencer who brings a defective body cord to the strip
be penalized with a yellow card. However, should one's body cord fail in the middle of a bout, no penalty is awarded. In both cases, the fencer is not allowed to disrobe to change cords. This leads to the common practice of replacing the body cord by tying the new cord around the defective cord and pulling it through the sleeve.
insulation so that any corrosion
of the copper
wire can be seen more easily.
Fencing
Fencing, which is also known as modern fencing to distinguish it from historical fencing, is a family of combat sports using bladed weapons.Fencing is one of four sports which have been featured at every one of the modern Olympic Games...
, a body cord serves as the connection between a fencer and a reel of wire that is part of a system for electrically detecting that the weapon has touched the opponent. There are two types: one for epee, and one for foil
Foil (fencing)
A foil is a type of weapon used in fencing. It is the most common weapon in terms of usage in competition, and is usually the choice for elementary classes for fencing in general.- Components:...
and sabre
Sabre (fencing)
The sabre is one of the three weapons of modern sport fencing, and is alternatively spelled saber in American English. The sabre differs from the other modern fencing weapons, the épée and foil, in that it is possible to score with the edge of the blade; for this reason, sabreur movements and...
.
Description
Épée body cords consist of two sets of three prongs each connected by a wire. One set plugs into the fencer's weapon, with the other connecting to the reel. Foil and saber body cords have only two prongs (or a twist-lock bayonet connector) on the weapon side, with the third wire connecting instead to the fencer's lamé. The need in foil and saber to distinguish between on and off-target touches requires a wired connection to the valid target area.How it works
The A line is the "lamé" line, the B line is the "weapon" line, and the C line is the ground. Although it works somewhat differently for each weapon, a valid touch always involves the connection of the A and B lines. In all three weapons, the C line is connected to the body of the weapon, and sometimes (normally in high-level competition) to the fencing strip as well, which must be made of metal in this case.
In foil, the A line is connected to the lamé and the B line runs up a wire to the tip of the weapon. The B line is normally connected to the C line through the tip. When the tip is depressed, the circuit is broken and one of three things can happen:
- The tip is touching your opponent's lamé (their A line): Valid touch
- The tip is touching your opponent's weapon or the grounded strip: nothing, as the current is still flowing to the C line.
- The tip is not touching either of the above: Off-target hit (white light).
In Épée, the A and B lines run up separate wires to the tip (there is no lamé). When the tip is depressed, it connects the A and B lines, resulting in a valid touch. However, if the tip is touching your opponents weapon (their C line) or the grounded strip, nothing happens when it is depressed, as the current is redirected to the C line. Grounded strips are particularly important in Épée, as without one, a touch to the floor registers as a valid touch (rather than off-target as in Foil).
In Sabre, similarly to Foil, the A line is connected to the lamé, but both the B and C lines are connected to the body of the weapon. Any contact between your B/C line (doesn't matter which, as they are always connected) and your opponent's A line (their lamé) results in a valid touch. There is no need for grounded strips in Sabre, as hitting something other than your opponent's lame does nothing.
On the strip
Typically, a fencer wears a body cord under their jacket. The wire is threaded through the sleeve of the weapon arm as it is being donned. Most gloveGlove
A glove is a garment covering the hand. Gloves have separate sheaths or openings for each finger and the thumb; if there is an opening but no covering sheath for each finger they are called "fingerless gloves". Fingerless gloves with one large opening rather than individual openings for each...
s feature a small hole designed around the use of a body cord. In officially sanctioned tournaments, the plug that fits into the weapon must be secured with an additional device, usually a small clip.
The other end of the wire is connected to the reel, as well as a D-clip on the fencer's jacket to prevent it from disconnecting during a bout. In addition, foilists and saberists must connect their alligator clips to their lamés. Fencers are forced by regulation to attach the lamé clip to their weapon arm side to prevent accidental or intentional removal.
Regulation also stipulates that any fencer who brings a defective body cord to the strip
Piste
A piste is a marked ski run or path down a mountain for snow skiing, snowboarding, or other mountain sports. The term is European, from the French for trail or track, synonymous with trail, slope, or groomed run in North America....
be penalized with a yellow card. However, should one's body cord fail in the middle of a bout, no penalty is awarded. In both cases, the fencer is not allowed to disrobe to change cords. This leads to the common practice of replacing the body cord by tying the new cord around the defective cord and pulling it through the sleeve.
Repair
Body cords must be kept in good working order lest their condition deteriorate. Common causes of broken body cords include breaks and damage to the prongs. Many body cords are made with clear plasticPlastic
A plastic material is any of a wide range of synthetic or semi-synthetic organic solids used in the manufacture of industrial products. Plastics are typically polymers of high molecular mass, and may contain other substances to improve performance and/or reduce production costs...
insulation so that any corrosion
Corrosion
Corrosion is the disintegration of an engineered material into its constituent atoms due to chemical reactions with its surroundings. In the most common use of the word, this means electrochemical oxidation of metals in reaction with an oxidant such as oxygen...
of the copper
Copper
Copper is a chemical element with the symbol Cu and atomic number 29. It is a ductile metal with very high thermal and electrical conductivity. Pure copper is soft and malleable; an exposed surface has a reddish-orange tarnish...
wire can be seen more easily.