Donnay Formula 100 Hexacore

Donnay Formula 100 Hexacore

Donnay Formula 100 Hexacore

The Donnay Formula 100 Hexacore is the “bad” twin of the Pentacore.

From the Pentacore it shares most of the features but is distinguished by a higher stiffness (60 ra not strung) that makes the Hexacore more “competitive” than the twin.

Like the Pentacore, also Hexacore has a shaft full of polyurethane foam type Xenecore characterized by a 6-chamber structure (hence the name Hexacore) able to combine lightness, strength and vibration absorption in a single structure of incredible flexibility.

Technical data sheet

Data collected from pro-t-one racquet neck 4 strung and “ready to race” with overgrip Yonex Super Grap and dampener Donnay.

  Dati dichiarati a racchetta nuda Dati rilevati a racchetta incordata
Weight 300g 326g
Balancing 325mm 330mm
Detected stiffness 60 58
Profile 24-27-20mm
Stringbed 100″
Pattern 16×19
Swingweight 324kgcmq
Spinweight 340kgcmq
Twistweight  16kgcmq

With a higher swingweight value than the Pentacore, the Hexacore delivers greater liveliness and responsiveness.

Also for the Hexacore a very wide and homogeneous response emerges, suggesting an excellent tolerance on off-centre strikes and a good stability and grip of the rotations.

Donnay Formula 100 Pentacore Red
Sweetspot analysis by pro-t-one

The size of the sweetspot is very large and ensures a homogeneous response reference.

The difference in flexibility between the two twin racquets is limited and concentrated in the lower part of the frame, i.e. on the stems where the greater rigidity of the Hexacore version allows to highlight a greater rigidity of the shaft structure and a flexpoint concentrated in the area below the bridge.

Donnay Formula 100 Pentacore Red
In yellow the data relating to the Formula Hexacore and in red those of the Pentacore

The aesthetics

The frame is finished with multi-directional carbon at sight with a clear coat transparent glossy finish.

The result is a glossy black livery that, depending on the reflection of light, varies in the texture creating a very attractive and highly sought after effect.

The distinctive feature of the Hexacore is the orange squares placed near the frame bridge (similar to those on the Allwood).

The graphics of the Formula Hexacore are completed by the silkscreens “Donnay”, “Formula Hexa” and “Xenecore” with steel effect.

On court – The pros

Considering the extensive analysis done for the Pentacore, I will limit myself to emphasizing the most marked differences that I have perceived in the field.

These two Donnays are basically similar in physical-mechanical terms on paper, but their difference is hidden inside.

The Formula 100 are in fact characterized by a different response in terms of dynamics and play due to the different cell structure inside the section.

The Hexacore version is more nervous, bad and reactive and winks to a player who likes to pull the winning shot and the closure being able to handle a slightly higher inertia but not at all prohibitive.

In particular, the forehand is played with more wickedness and it is easier to find the decisive strikes.

Much satisfaction on the inside-out and inside-in strikes for which I immediately found feeling and the right angles.

Excellent the first flat service that allows you to break through and find a winning shot with greater ease than the Pentacore.

Good also the execution of slice and kick, always insidious and with good parables.

On court – The cons

I found the Hexacore more “immediate” than the Pentacore but also in this case some adaptation is needed.

We are talking about a frame with low stiffness (60 ra not strung) that requires a few hours to be used properly.

Watch out also for the tensions of the strings.
It is better to increase your reference tension by 1 kg (maybe even 2 kg depending on the composition of the strings) in order to avoid the slinging effect.

Who it is indicated for 

The Hexacore is also an extremely versatile frame and adapts to different types of tennis players even if it winks at a more “competitive” audience than the Penta.

By increasing the mass by a few grams (the 10 gram cap is very practical) we will have an even more stable and “offensive” frame in our hands.

The strings

I tested the Hexacore with the following strings and tensions:


The Donnay Formula 100 Hexacore is an extremely versatile and very interesting frame that stands out for tolerance, softness and high performance.

More competitive than the twin Pentacore winks at the player who likes to pull the winning strikes and the closure.

Last note about the Hexacore … will become the frame of reference (and with which I will play tournaments and competitions) for all my tests!

The “tournament” configuration will be with 10 grams at the handle and StringLab ALU Tour LB 1.25 pulled to 22 kg.

We thank HMA Sport (in the person of Marco Chivilò), Italian distributor Donnay, for the concession of the frames that we used in our tests.