The frame utilizes a hybrid lay‑up of 30 % carbon fiber and 70 % fiberglass reinforced epoxy, delivering a tensile modulus of approximately 45 GPa in the longitudinal direction while keeping the
The frame utilizes a hybrid lay‑up of 30 % carbon fiber and 70 % fiberglass reinforced epoxy, delivering a tensile modulus of approximately 45 GPa in the longitudinal direction while keeping the overall density below 1.45 g/cm³.
This composition yields a flexural stiffness of about 12 Nm/deg, which translates to a controlled power transfer suitable for players still developing swing technique.
Each racket is balanced to a head‑light configuration with a balance point located 265 mm from the butt cap, resulting in a swingweight of roughly 210 kg·cm².
The total mass ranges from 340 g to 360 g, allowing novice users to achieve faster racket head speed without excessive fatigue during extended practice sessions.
Vibration damping is achieved through a viscoelastic insert in the handle, reducing peak frame acceleration by approximately 18 % compared with a solid‑core reference.
The striking surface features a sand‑blasted finish with an average roughness (Ra) of 8 µm, which increases the coefficient of friction with the felt cover to about 0.42, enhancing spin generation on off‑center hits.
String pattern options include 16×19 and 18×20 configurations, both maintaining a string bed stiffness of roughly 210 N/mm, providing a consistent feel across varied impact locations.
Every rack undergoes a three‑point bend test to verify flexural stiffness within ±5 % of the target value, followed by an impact fatigue test simulating 5 000 forehand strokes at 30 m/s.
Weight is measured with a precision balance (±0.5 g) and balance point is verified using a laser‑based profilometer; deviations beyond ±2 mm trigger rework.
Surface roughness is sampled via a contact profilometer on five locations per frame, ensuring Ra remains within 7‑9 µm across the striking zone.
The combination of a head‑light balance and moderate stiffness lowers the torque required to initiate a swing, helping novices develop proper wrist mechanics without over‑reliance on arm strength.
A larger effective sweet spot—approximately 55 cm²—results from the optimized string bed geometry and surface texture, reducing the penalty of off‑center hits and encouraging consistent ball placement.
Vibration dampening in the handle minimizes transmitted shock, decreasing the likelihood of elbow discomfort during prolonged training sessions.

| Parameter | Typical Value | Unit | Adjustable Range |
|---|---|---|---|
| Frame Mass | 350 | g | 340‑360 |
| Balance Point | 265 | mm from butt | 255‑275 | Flexural Stiffness | 12 | Nm/deg | 10‑14 |
| Surface Roughness (Ra) | 8 | µm | 7‑9 |
| String Bed Stiffness | 210 | N/mm | 190‑230 |
For detailed test reports, material certificates, or to arrange a prototype sample, please reach out to our engineering team.