The racket frame employs an isometric head shape with a width of 22 mm at the 3 and 9 o’clock positions, increasing the effective sweet spot by approximately 7 % compared to a conventional oval. The
The racket frame employs an isometric head shape with a width of 22 mm at the 3 and 9 o’clock positions, increasing the effective sweet spot by approximately 7 % compared to a conventional oval. The cross‑section transitions from a rounded oval at the throat to a tapered box at the tip, reducing drag coefficient measured in wind tunnel tests from 0.32 to 0.27 at 25 m/s airflow.
A high‑modulus graphite shaft is laid up with a 0°/±45°/90° fiber orientation sequence. The resulting flex modulus along the longitudinal axis is 45 GPa, giving a static deflection of 6.8 mm under a 10 N load applied at the midpoint. Torsional stiffness is 2.1 Nm/deg, limiting unwanted twist during off‑center impacts.
The string pattern is 22 main × 22 cross, with grommets placed at 4 mm intervals to maintain uniform tension. Recommended tension range for advanced players is 24–30 lb, producing a string bed stiffness of 1.8 kN/m at 27 lb. The string bed’s effective area is 0.045 m², influencing rebound velocity.
Buyers can specify the following variables, each adjustable within the indicated tolerance:
Critical dimensions are inspected on a coordinate measuring machine (CMM) with a repeatability of ±0.02 mm. Frame ovality is held within 0.15 mm, shaft straightness within 0.1 mm over 300 mm length, and string hole alignment within 0.1 mm. Each racket undergoes a dynamic impact test: five shuttlecock strikes at 35 m/s, measuring peak frame acceleration; acceptance criterion is < 250 g.
The combination of a low‑drag frame and high torsional stiffness enables faster racket head speed while maintaining shot accuracy. Players report a reduction in swing time of approximately 0.04 seconds for clear shots when using a 285 mm balance point racket versus a 300 mm head‑heavy variant, based on indoor court motion capture data.
| Parameter | Typical Value | Customizable Range |
|---|---|---|
| Head weight | 78 g | 74 – 84 g |
| Balance point | 285 mm | 260 – 310 mm |
| Shaft flex modulus | 45 GPa | 38 – 52 GPa |
| Recommended string tension | 27 lb | 22 – 32 lb |
| Frame width (3/9 o’clock) | 22 mm | 20 – 24 mm |
Standard length is 675 mm. Length adjustments of ±5 mm are possible upon request, affecting swing weight and balance.
Q: What information is required before quotation?Desired head weight, balance point, shaft flex classification, grip size, and any special paint or logo specifications.
Q: How is quality inspected?Each unit undergoes dimensional CMM check, torsional stiffness test, and five‑impact dynamic test as described above.
Q: What packaging methods are available?Individual rackets are placed in a low‑density polyethylene sleeve, then packed in a single‑wall corrugated carton with corner protectors; bulk packs of 10 units use a double‑wall carton with internal foam inserts.
Q: What is the typical production lead time?For orders up to 500 pieces, lead time is 3‑4 weeks after final design approval; larger volumes are scheduled per capacity.
To discuss your specific requirements or request a sample, please contact our engineering team.
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