How They Work - This page uses technical terms - easy to understand for engineers

How do Perfection Pegs Work?

In basic terms, they employ gears - small, precise, incredibly strong helical gears. Rather than a whole-peg rotation and wood-on-wood friction, operation of the iternally housed gearing brings each string to its desired tension, and holds it securely in place.

Stated 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 the 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 onces 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.

What about durability?

If anything, the Perfection Pegs may be over-engineered to ensure durability and longevity. In fact, one might expect that the Perfection Pegs will outlast any instrument in which they are installed! Here are some 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 helcopters. The ring gear assembly for the cello peg is brass, while for the violin it is aircraft grade aluminium. The carrier/peg shaft assembly is also aluminium. All of the internal parts are permanently lubricated with an ultra-viscous lubricant named 767A Nyogel, the same thing used in various sealed microscrope, 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 replace with new Perfection Pegs or conventional ebony friction pegs.