Devil stick (also Devil Stick, devilstick, devil-stick, Rhythm Stick, Rhythm Sticks etc., or plural forms) manipulation is a form of gyroscopic juggling, or equilibristics and is generally considered to be one of the 'circus arts'. The name "Devil" stick supposedly comes from the old Greek word "Devil", "Dallo" or "Diaballo", meaning "to toss to" or "to throw to". Sometimes called "devil-sticking" other terms often used are: "twirling", "sticking" and "stick juggling".
A set of devil sticks is made up of three pieces - the baton and two control sticks - but it will often be called a "pair of sticks".
Typically if a center stick is not tapered (i.e. a straight dowel or rod) and possesses tassels at its end, then it is known as a "Flower Stick" (as the tassels, when the stick is spun, will twirl outwards and resemble an open flower). This term is also now used to describe a straight center stick with any weights (not just tassels) at its end and sometimes refers to hybrid sticks which are both tapered and have weights. Tapered sticks without end weights are known simply as Devil Sticks. Flower sticks can also be properly called "Devil Sticks" as that is the more general term.
The pendulum is an important move to learn, because to a great extent, all of the more difficult maneuvers rely on this skill.
The 'helicopter' spin is a variation in which a horizontal rotational force is applied as the baton 'pendulums' in the vertical plane, causing a continuous rotation in a nearly horizontal plane. Advanced twirlers can twirl the stick with one stick only (called the infinity roll), with an arm, knee or other limb and are able to manipulate the baton in any plane above below or in front of or behind the performer's body while walking, unicycling or tightrope balancing. Some can even twirl two batons simultaneously.
These are often colorfully decorated and are known variously as Quick Stix, Crystal Stix, Hippie Sticks, Luna Sticks, Equilibristicks (a play on the word 'equilibristics'), Trick Sticks, Stunt Sticks and many other names. Despite the plethora of names, stick twirlers often call them simply 'sticks'.
As new materials and construction techniques become available, resourceful jugglers and craftspersons have advanced the design of the 'modern devilstick', making them more durable, more portable, or having physical properties that enable jugglers to perform feats previously deemed impossible or too difficult to accomplish. It is a widely held belief that 'sticks' will continue to advance as construction techniques and materials become more advanced or as materials become more widely available.
Fiddlestix, one 'modern' design, are made of cylindrical aluminum alloy or titanium shafts, either hollow or solid. The center stick is wrapped spirally with dense suede, butted edge-to-edge to make a smooth, suede covered 'frictive surface'. The sidesticks are either similarly covered with suede ('slider set' is what this is called, as the suede can help the centerstick to slide smoothly along the control stick) or are covered with surgical rubber or silicone tubing (a gripper set). In the case of the solid titanium baton, the surface of the stick is either machine-milled or grit-blasted, to produce the friction surface and there is no covering on the length of the center stick. This type of stick is almost universally paired with control sticks covered in a soft natural latex, silicone, or hard vulcanised rubber tubing - materials which provide varying degrees of friction against the bare metal of the baton's control surface.
The ends of the Fiddlestix baton are wrapped with a one to two inch (5 cm) thick layered, floppy 'tassel' of fringed suede. These tassels (wrapped axially and with the fringe pointing away from the center of the baton) are heavier and less flexible than those of a 'Flower stick'. The purpose of the Fiddlestix tassels is to retard rotation about the long axis of the center stick, and to move the moment of inertia further from the center of mass and closer to the tassel. Another benefit is that extending the moment of interia creates a larger 'sweet spot' (the point at which the control stick has the greatest degree of controlled influence on the movement of the baton). The larger sweet spot combined with increased rotational inertia allows the sticks to be manipulated in ways that would be impossible otherwise, increasing the illusion that the laws of physics/gravity are being broken. (This process can be simply understood with the highschool physics equation F=Iα. Where F is the force being applied, I is the moment of inertia and α is the rotational acceleration. F in this case can be seen as the cross product of force and radius. For a more intuitive view of the equation rearrange it to be α=F/I, here it is clear the the acceleration is dependent upon force and moment of interia.)
Though the name "Fiddlestix" has been subsequently registered as a trademark for several different products and services*, the 'Fiddlestix' design is in the public domain, placed there by the doctrine of prior art in August of 1987 (at a Mountain Aire festival, featuring Aerobatic exhibitions, and concerts by Carlos Santana and the Grateful Dead) in Calaveras County California by their designer, Glenn, (also known as Bongo, Bongo the Clown), a juggler from Eugene, Oregon. Glenn began freely sharing the design with other jugglers, and explaining its physics, in an apparently successful effort to avoid the new physical properties of his toy design being patented by corporate toy companies. Since then numerous variations on the 'inertia tassel' design have been created - as well as some designs that have tassels of such slight mass as to be merely decorative.
One interesting variation on the Fiddlestix design is a 'folding' stick, which can be stored in a pouch less than 2 inches round by 12 inches long. These folding sets are not as durable as the non-folding type, but are a good choice for those who like to always have a set of sticks on hand.
Each player has one control stick and stands either side of the net, a centre stick is used as the volley ball which is tossed over the net to the other side of the court. The centre stick my be hit as many times as the player likes and it can be manipulated in any plane before being passed across.
Scoring and faults are the same as normal volley ball.
Fire devil sticking includes the same categories of play described above. Flaming devil sticks have wicks on the ends allowing them to be set afire, using a variety of flammable liquids as fuel. Firesticking is an inherently hazardous activity. Appropriate fire precautions should always be taken when using burning fuels. Serious burns, and damage to property, can result from mishandling burning materials.
Djævlepind | Devilstick | Bastón del diablo | Bâton du diable | דוויל סטיק | デビルスティック | Devilstick | 惡魔棍
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