Yonex Ezone 100

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Technical data sheet

The ID card of this frame describes a classic “tweener” racquet with modern design, 300g with a 320mm balance, a classic that distinguishes the production of mid-range frames of the manufacturers.

The frame’s inertia values are moderate at around 290kg·cm2, which gives a strung racquet value close to 315-316kg·cm2, suggesting excellent maneuverability and decent stability.

By default, SpW Spinweight and its twistweight value are direct measures of the racquet’s dynamic lateral stability. 

Unstrung racketStrung racket
Head Size100 sq. in.100 sq. in.
Balance16×1916×19
Beam23 mm / 26 mm / 22 mm23 mm / 26 mm / 22 mm
Dynamic Stiffness150Hz – 66.5DRA150Hz – 66.5DRA
Weight300g325g
Balance320mm325mm
Swingweight290kgcmq315kgcmq
Spinweight303kgcmq333kgcmq
Twistweight13kgcmq18kgcmq
Recoilweight145kgcmq150kgcmq
Polar Index0.940.92
Static Stiffness71RA69RA

The stiffness of the frame makes the racquetlab reading stop at 71 RA points, which drops to 69 RA strung. In these terms it is interesting to note that the dynamic stiffness value defined by the frame’s vibration frequency at 150Hz with a bare racquet gives an equivalent dynamic stiffness value of 66.5 points, which shows that the racquet on court should give a softer feel and smoother response than expected from the statically measured value.

The barycentric stability is moderate, ensuring a reasonable response at net and in acrobatic play.

yonex-ezone-100-stiff

As far as the analysis of the stiffness distribution is concerned, it is interesting to note that the deflection of the frame is quite uniform in the lower part at the stems and then leaves room for a greater solidity of the upper part, as it was logical to expect from the analysis of the profile 23.5-26-22mm.

The deflection point is located in the lower part of the frame, and this property should guarantee an excellent progressiveness linked to a good level of solidness of impact.

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