Knilling P1VC4415 Perfection Peg Set 4/4 Cello 15 mm
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Retail: $149.00
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    The Perfection Peg is a deceptively simple mechanism with a size, shape and overall appearance
    closely matching a conventional ebony peg. The patented design enables easy, accurate and stable
    tuning of the violin, viola or cello without the use of tailpiece-mounted string adjusters. In concept,
    this is equivalent to mechanisms already in use on the guitar and string bass.
    In basic terms, they employ gears—small, precise, incredibly strong helical gears. Rather than
    whole-peg rotation and wood-on-wood friction, operation of the internally housed gearing brings
    each string to its desired tension, and holds it securely in place.
    Stated a bit more technically, a player, rotating the head of the peg, is actually turning the main gear
    (called the sun gear). The sun gear drives smaller gears (called planet gears), which “orbit” between
    the sun gear and a toothed outer housing (called a ring gear). As the orbiting planet gears are spun
    about the sun gear, they force the rotation of an elongated housing (called a carrier), which serves as
    the shaft portion of the peg. The gears are also designed so that the shaft rotates once for every four
    turns of the peg’s head (called a four-to-one gear reduction). That allows the Perfection Peg to also
    function as a fine tuner.
    If anything, the Perfection Pegs may be over-engineered to ensure durability and longevity.
    In fact, one might expect that Perfection Pegs will outlast any instrument in which they are installed!
    Here are some of the details.
    The working gears are made from 8650 thru-hardened steel alloy. This same alloy is commonly used
    for the shafts that drive the propeller blades on helicopters. The ring gear assembly for the cello peg
    is brass, while for the violin it is aircraft grade aluminum. The carrier/peg shaft assembly is also
    aluminum. All of the internal parts are permanently lubricated with an ultra-viscous lubricant named
    767A Nyogel, the same thing used in various sealed microscope, telescope and binocular gear
    assemblies. The head is molded from a high-tech plastic called PBT/ABS and the opposite end of
    the shaft is Delrin, both extremely durable materials.
    For any reason, Perfection Pegs can be easily removed by a qualified luthier or technician, and
    replaced with new Perfection Pegs or conventional ebony friction pegs.
    Ease, accuracy and stability of tuning. Perfection Pegs turn with great precision and
    hold in the desired position until manually adjusted.

    Time and effort. More class time and effort can be devoted to teaching and playing
    rather than tuning.

    More fun learning
    , and less hassle for players, students, teachers and parents.

    Tuning proficiency
    . Because of its ease, students can actually learn this important
    aspect of playing their instruments in their first year of training.

    Higher reliability and lower costs of maintenance.
    Perfection Pegs are virtually
    maintenance free and don’t create wear-and-tear on the peg box. In addition,
    all the costs and risks associated with fine tuners are eliminated.

    Better tone. By eliminating the fine tuners on the tailpiece (which were never part
    of the original design of the string instrument), Perfection Pegs restore the full sound
    potential of the instrument, and remove a main source of rattles and buzzes.
    Installation should be left to qualified technicians and luthiers. Perfection Pegs are not intended
    for consumer/player installation.

    Click here for complete instructions
    Overall Customer Rating of 13 Reviews:

    Knilling Perfection Pegs

    Rating:
    Pros:
    Cons:
    a great improvement over friction pegs

    Knilling Perfection Pegs

    Rating:
    Pros:
    Cons:
    I received the wrong set at first but that was my fault. Hornsales worked with me on the issue and I am very happy. Be sure to order the correct size the first time.

    Knilling Perfection Pegs

    Rating:
    Pros:
    Cons:
    Fast shipping at a great price

    Knilling Perfection Pegs

    Rating:
    Pros:
    Cons:
    They work as advertised. How they'll hold up only time will tell.

    Knilling Perfection Pegs

    Rating:
    Pros:
    Cons:
    These tuners are difficult to install. You need a violin reamer which can cost you anywhere from $25 (from China) to $150 for a quality tool. You have to go on the web for installation instructions. Finally, under tuned up tension, they slip some so I don't know how useful they're going to be in the long haul.


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