20/01/2026
Why 25lbs isn’t always 25lbs! 🏸🤔
Ever wonder why two rackets strung at the exact same tension feel completely different on court?
I ran a controlled experiment to see how Frame Geometry affects your Dynamic Tension (DT)—the actual "stiffness" of the string bed you feel when hitting the shuttle. 🎾📊
The Controlled Setup 🛠️
To keep things scientific, I kept every variable identical:
String: Kizuna Z66 ✅
Machine Tension: 25lbs (Yonex 4-knot method) ✅
Speed: 17–19 mins per racket ✅
Consistency: Identical tension balancing modification ✅
The Results (Measured with ERT 300) 📈
Even though they are all 25lbs, the frame shape told a different story:
1️⃣ Large/Standard Frame (Wilson): 50 DT 🟢 (Softer/Powerful)
2️⃣ Standard Frame (Victor Fatome F): 51 DT 🟡 (Balanced)
3️⃣ Compact Frame (LiNing Bladex700): 53 DT 🔴 (Stiff/Control)
The Science: Why does this happen? 🧬
It comes down to string length. 📏
In a compact frame, the individual strings are shorter. Shorter strings have less "give" or stretch compared to the longer strings found in a larger head.
The Result: A compact frame naturally creates a denser, stiffer string bed. In this test, the compact frame felt 3 DT units tighter than the large frame—that’s a massive difference in feel!
The Pro-Tip for Players 💡
If you are switching from a large-head racket to a "Compact" frame, drop your tension by 1-2lbs to maintain the same feel you're used to!
What’s your preference? A forgiving large head for easy power, or a surgical compact frame for maximum control? Let me know below! 👇
