この記事はまだ翻訳されていません — 英語の原文を表示しています。フルテキストは英語に切り替えるか、ブラウザの翻訳機能をご利用ください。
The Victor VBS-70 is a premium polyamide badminton string engineered to deliver crisp control and consistent tension retention across a wide range of playing styles and skill levels.
Quick answer: If you've been stringing the same Yonex BG80 for years, the VBS-70 is a genuinely competitive alternative that offers better tension retention and sharper touch feel at a slightly lower price point — making it an excellent choice for club players who restring every 4–6 weeks.
What Is the Victor VBS-70?
The Victor VBS-70 occupies a unique position in the premium badminton string market. It sits directly opposite Yonex's BG80 in the high-performance polyamide category, offering professional-level construction at a price point accessible to serious club players. At 0.70mm gauge, it's a medium-thickness monofilament designed for players who prioritise feel and predictability without paying elite-tier pricing.
Victor's engineering philosophy for the VBS-70 centres on what the company calls a "high-response polymer blend" — a nylon formulation that maintains elasticity and responsiveness across a wider tension range than competing strings. This matters because New Zealand club players rarely string at uniform tensions. A player might use 25 lbs for singles but prefer 23 lbs for doubles, and the VBS-70 adapts to both scenarios without losing character.
Since 2024, the VBS-70 has been the standard string for several Victor-sponsored professional players competing at international level, validating its performance credentials beyond marketing claims. Yet in New Zealand, club players often overlook it simply because Yonex commands greater retail visibility and brand recognition. This guide cuts through that mindshare advantage and helps you decide whether the VBS-70 deserves a permanent slot in your racket bag.
Core Specifications and Technical Details
Gauge and Construction: The VBS-70 measures 0.70mm in diameter, placing it squarely in the medium thickness category. This gauge represents a practical middle ground — thicker than some feel-focused alternatives (which run 0.65–0.68mm) but thinner than power-oriented strings (0.75mm and above). The monofilament construction means a single continuous nylon strand, as opposed to braided or multi-core designs, which contributes to its clean, predictable response.
Material Composition: High-polymer nylon monofilament with proprietary elasticity additives. Victor does not publish the exact polymer blend formula (competitors guard these jealously), but independent testing suggests the VBS-70's hysteresis (energy loss per shot) sits between traditional nylon and premium synthetic blends, favouring responsiveness over maximum power.
Recommended Tension Range: 20–30 lbs (9–14 kg). Most club players operate in the 22–28 lbs band. Competitive singles players typically string 25–27 lbs; doubles players often prefer 23–25 lbs for softer response on rapid net exchanges.
Typical NZD Cost: $16–$22 per set as of 2026, depending on retailer and availability. Prices vary regionally; North Island retailers often have better stock than South Island. Bulk purchasing (two or three sets) occasionally yields a $1–$2 per-set discount.
Colour Options: White and black (standard), with occasional limited-edition colours depending on stock. Colour does not affect performance — purely aesthetic.
How It Feels: Touch, Power, and Response Compared to Yonex BG80
Touch and Net Play Response
The VBS-70 delivers noticeably sharper feedback on touch shots — net play, drops, and deceptive flicks — compared to Yonex BG80. This crispness stems from the slightly lower hysteresis of Victor's polymer formulation, meaning less energy is absorbed on rapid racket acceleration. In practical terms, your fingers feel earlier, clearer feedback about shuttle contact and trajectory.
For technical players who rely on placement and feel over power, this responsiveness is a genuine advantage. Club-level net specialists report that the VBS-70 makes it easier to dial in touch shots during the first few weeks after stringing. Conversely, players accustomed to softer strings like BG66 sometimes describe the VBS-70 as "snappy" or "harsh" in the first 1–2 sessions. This is not a durability issue — it's a feel preference. Most players adjust within a week of regular play.
Power Output and Smash Performance
On heavy smashes and attacking clears, the VBS-70 delivers comparable power to BG80 for the vast majority of club-level players. Where a measurable difference emerges is at the extreme end: if you deliberately play at very high tension (28+ lbs) or generate exceptional racket head speed (advanced competitive players), BG80 can feel fractionally more explosive. This is a marginal difference — most club players stringing at 24–26 lbs will not notice any meaningful power deficit.
The key insight: do not assume that a different feel equals reduced power. The VBS-70's crispness is about control responsiveness, not energy loss. For aggressive players, the trade-off is worth it because the string's predictability makes power placement more reliable.
Shuttle Velocity and Trajectory Consistency
One of the VBS-70's genuine strengths is trajectory stability week to week. The string bed holds its shape well across the first 5–6 weeks of play, meaning your distance shots and attacking angles remain consistent. This predictability is invaluable for competitive players who need to trust their racket during tournaments or club finals. By contrast, softer strings can feel noticeably different from week three onward, requiring constant micro-adjustments to aim.
When Should You Restring Your VBS-70 Racket?
Tension retention — how long a string maintains its stiffness and responsiveness — is where the VBS-70 genuinely outperforms many budget alternatives. Regular club players often underestimate how much string degradation affects their game, yet this is one area where the VBS-70 provides measurable value.
The VBS-70 typically loses 3–5% of its initial tension per week under regular club play (3–4 sessions weekly). This rate is marginally better than most economy polyamide strings and roughly competitive with Yonex BG80. In practical terms: if you string at 25 lbs, you'll still feel a responsive, controlled string at week five; by week seven, noticeable softening occurs.
Recommended restringing intervals:
- Competitive players (tournament play, weekly coaching): every 4 weeks to maintain optimal response and power consistency
- Regular club players (3–4 sessions weekly): every 5–6 weeks before feeling a marked loss of crispness
- Social / casual players (1–2 sessions weekly): can stretch to 7–8 weeks, though the string will feel noticeably softer by week six
For competitive players, this means the VBS-70 is economical. You'll restring more frequently than casual players, but the lower per-set cost ($16–$22 vs $18–$26 for BG80) offsets the number of sets purchased annually. A player restringing every 4 weeks will spend roughly 5–10% less per year on strings compared to BG80 at equivalent tension and frequency.
Tension Specifications and How to Choose Your Starting Point
Selecting the right initial tension is critical to getting the best out of the VBS-70. Too high, and you sacrifice feel for stiffness; too low, and you lose control on attacking shots.
For singles players: Start at 25–26 lbs. This range delivers optimal control on clears and smashes while maintaining enough responsiveness for touch play. If you're a power-oriented player with high racket speed, you can experiment with 26–27 lbs. If you prioritise touch and placement, try 24–25 lbs.
For doubles players: Aim for 23–25 lbs. The faster exchanges and closer net play in doubles reward a slightly softer string that returns power quickly without requiring excessive effort. Try 24 lbs as your baseline and adjust down by 1 lb if you want more forgiveness on rapid flicks and tight net shots.
For mixed doubles: Most players use their singles tension (25–26 lbs) to maintain consistency across formats. If you play mixed exclusively or prefer a more defensive positioning, 24 lbs is a sensible starting point.
Critical warning: Avoid stringing above 28 lbs. Beyond this point, the VBS-70 doesn't deliver meaningfully more power — it simply becomes stiffer, reducing touch responsiveness and accelerating tension loss. You'll also reduce the string's lifespan, potentially losing durability without gaining performance.
Common Mistakes and Quick Tips for VBS-70 Players
- Stringing too high for perceived power: The VBS-70 works best between 22–27 lbs. Going above 28 lbs doesn't unlock hidden power; it only stiffens the response and shortens lifespan. If you're tempted to string higher because you want more distance, invest in technique or racket stiffness instead. Start at 24–25 lbs if unsure.
- Mistaking crispness for harshness or fragility: The sharp feel is intentional design, not a flaw or durability warning. Crisp strings are not inherently injurious to the arm — arm strain results from poor technique, inadequate warm-up, and overuse, not string character. Use proper preparation and controlled strokes, as you would with any string.
- Using one tension across all formats: If you play both singles and doubles seriously, string your doubles racket 1–2 lbs lower than your singles racket (e.g., 23 lbs vs 25 lbs). The VBS-70 responds excellently to this adjustment and feels more forgiving in fast doubles exchanges without sacrificing control on attacking shots.
- Ignoring environmental humidity: Like all nylon strings, the VBS-70 absorbs atmospheric moisture. If you live in a humid region — Auckland, Wellington, or coastal areas — and don't store your rackets in a dry bag or sealed case, tension can drift faster than expected, potentially losing 5–7% within four weeks instead of the standard 3–5%. This is not unique to the VBS-70; it affects all nylon strings. Plan accordingly.
- Expecting transformation from string choice alone: The VBS-70 is genuinely good value for money, but it's not magic. If you're upgrading from a broken or dead string, almost any new premium string will feel better. Don't attribute all improvements to the VBS-70 itself — some credit belongs to the freshness of restringing.
- Overlooking the cost-per-week calculation: At $16–$22 per set, restring every 5 weeks, the VBS-70 costs roughly $3.20–$4.40 per week. If you restring every 7 weeks, that drops to $2.30–$3.10 per week. This is low-cost insurance for consistent performance; don't skip restringing to save $2–$3 per month.