How many Pojies does my racquet need?

For the majority of racquets, you will use either 3 or 4 Pojies, one for each pair of strings at the bottom of the throat of your frame. If you have 8 strings – 4 string pairs – at the throat, you use 4 Pojies. If there are 6 strings (3 pair) coming into the throat, you use 3 Pojies.

However, a few racquets do not easily accommodate 4 Pojies, even though they have 8 strings (4 string pairs) coming into the throat area. With these frames, the outside Pojies will be angled into the yoke of the racquet and the string itself will likely be in contact with the frame after stringing. In this instance, we recommend that you only use 2 Pojies. The Head Graphene Prestige S, Prince Tour ESP 98 & Tour ESP 100, Mantis Pro 295 and Volkl VI MP (102) are examples of this.

Other frames where the clearance is very tight include the Dunlop M4.0, Babolat Pure Control and Head Graphene Radical S. Depending on the string tension you use, you may have enough space between outer Pojies and these frames that the string does not touch the racquet.

Dunlop M4.0 at 60 lbs. There is enough space to use 4 Pojies on this frame.

Is my Pojie worn out?

The package says “For optimal performance, the Pojie should be replaced with each stringing,” yet this set of Pojies has just been strung for the 4th time. The racquet belongs to a tennis pro who is on court teaching, hitting, or playing 30+ hours a week. The polyurethane compression cores in contact with the strings have become slightly deformed, but appear to have some life in them yet. The black string guides look to be in good condition.

He will probably need to replace his Pojies at his next re-stringing, particularly since one of his primary reasons for using Pojie is to reduce the effect that hitting so many tennis balls has on his elbow. As the Pojie loses it's elasticity, it's ability to absorb impact is also diminished.

For more information, see our post “How often should I replace my Pojie?”

Answering your questions: Is Pojie a Vibration Dampener?

Ping or Pop?

Vibration dampeners come in all shapes and sizes, we even have one of our own with the Pojie logo. Most of them do a good job of dampening the high frequency string vibrations—that “ping” sound you hear when you hit the ball. Some players, including pros, even use a rubber band, which is also quite effective. 

But, while these devices absorb the harmonic vibration, they do little or nothing for racquet frame vibration, which can affect arm injuries like tennis elbow. The Pojie however, is designed to attenuate initial impact force, reducing the shock to your wrist, elbow and shoulder. 

Because the Pojie is not a dampener, you may want to continue to use one if you like the "pop" sound. And, if you like the auditory feedback you get from the "ping", Pojie won't take that away — just the sting.