02/04/2026
An In-Depth Interpretation of Badminton String Tension Loss
Revealing the Truth Behind DT Values Across the Three Major Brandsâ strings (a really deep and nerdy topic :D)
This article focuses solely on hardware performance trends. Ultimately, the stringerâs skill, choices of method and understanding are what matter most.
âť Most of the data referenced in this article is compiled from professional stringer communities, major badminton forums, and the collective experience of senior players and technicians. These insights are combined with the authorâs own observations and long-term testing using the ERT300 Plus Dynamic Tension Tester. Based on years of trials and testing, the data has been systematically interpreted and organized. The figures presented are not absolute values but rather trend-based references intended for stringers and players. Please read with a rational and analytical mindset.
What Are âTension Lossâ and âDT Valueâ?
Before discussing tension loss, several key concepts must be understood first.
Traditionally, stringing tension is expressed in pounds or kilograms (lbs/kg, which will be referred to as static tension), which is the reference tension applied during stringing. However, this value represents only static tension.
Once the racket is removed from the stringing machine, tension immediately begins to decrease over time and through actual play. This process is known as tension loss.
To more accurately describe how the string bed behaves during play, tools such as the ERT300 Plus can be used to measure Dynamic Tension (DT value).
DT value represents the perceived stiffness, rebound and vibration response of the string bed at impact (also known as feedback). This can be considered a quantified indicator of string bed elasticity and hitting feel.
Tension Loss Is Not Linear: The First 24 Hours Matter Most (Fig. 2)
Based on real-world testing, most badminton strings begin losing tension immediately after being removed from the machine.
The first 24 hours represent the most significant drop.
Across mainstream badminton strings, DT value loss during this period typically ranges from 5% to 12%, depending on the stringsâ material stability, elasticity, and gauge thickness. For recreational players who do not play as often, we do recommend allowing the racket to rest for 24 hours before play. This helps the string bed reach a more stable phase, resulting in a more consistent and longer-lasting hitting feel.
Data on Tension Loss Trends Across the Three Major Brands
Based on collected test data, the following summarizes the average 24-hour tension loss trends of major string models from YONEX, VICTOR, and LINING, highlighting strings with relatively strong tension retention.
1. YONEX
YONEX dominates both the professional and consumer markets, continuously introducing new string technologies.
However, certain thin gauge strings under 0.68mm and hybrid strings exhibit faster tension loss due to their designs.
Higher tension loss (8â11%):
AEROSONIC, AEROBITE series, BG66 ULTIMAX
Better tension retention (4.8â6%):
EXBOLT 63/65/68, BG66 FORCE, BG80 series, SKYARC
Thicker durability strings such as BG65 and BG65Ti show moderate loss (~7.7â7.8%), but offer excellent stability and remain classic durability choices.
Overall observation:
YONEX tension retention is closely tied to string gauge and how the string is being constructed itself. Thin strings provide superior repulsion but reduced stability, while thicker strings and the EXBOLT series perform notably better in retention.
2. VICTOR
VICTOR strings have made significant progress in recent years, particularly excelling in tension retention, especially for mid-to-high tension competitive setups.
Exceptionally low-tension loss:
VBS70 (3.8%), VBS68P (4.3%), VBS63 (5.7%), VBS69N (5.8%)
Thin strings still within acceptable range:
VBS58 (6.8%), VBS61 (6.2%)
VBS66N, designed for elasticity and feel, shows higher loss (~7.4%).
Overall observation:
VICTOR strings clearly show a trend of thicker gauge = better tension retention, while maintaining solid stability across different performance categories.
3. LINING
LINING focuses heavily on combining high repulsion with durability, offering a wide variety of string options.
Tension retention varies significantly by model.
Strong tension retention:
N70 (3.8%), N65, N68 (5.7%), N58, N61, L67 (~6%)
Higher tension loss:
NO.1, NO.5, NO.7 (9â10.7%), N65, N69 (9.4â9.6%)
Notably, while the NO. series (the older generation lineup) delivers excellent elasticity and an explosive feel, it sacrifices tension retention, making it more suitable for players who restring frequently or prioritize immediate feedback. The new N series, however, represents a clear improvement over its predecessor, reflecting advancements in LININGâs string technology with noticeably better tension stability while providing excellent overall balance and repulsion performance.
Why Do Professional Players Prefer Freshly Strung Rackets?
While recreational players benefit from letting strings stabilize, this advice generally does not apply to professional athletes.
Key reasons include:
⢠Peak Performance
Freshly strung rackets retain peak tension, offering maximum repulsion and control, which is critical in fast, high-intensity rallies.
⢠Feel Consistency
Elite players are extremely sensitive to string bed feedback. Even minor tension changes can affect timing, confidence, and shot quality.
⢠Equipment Consistency
Professionals standardize their tension, string model, stringing pattern, and pre-stretch percentage, which are to ensure identical racket behavior and feel in every match.
Why Do Professionals Restring Every Day During Tournaments?
This practice directly follows the principles above:
⢠Maintaining consistent tension!
Even without play, strings can lose 5â10% DT within 24 hours.
⢠Environmental adaptation!
Temperature and humidity significantly affect string behavior. New strings help counteract these variables.
⢠Reducing breakage risk!
Match intensity far exceeds training. Using fatigued strings increases the risk of in-match breakage.
⢠Strategic adjustments!
Some players fine-tune tension or string type based on opponents, court speed, or match conditions.
In conclusion⌠Understanding Tension Loss Is the First Step Toward Finding the Ideal Tensionđ
Whether youâre a beginner, a feel-oriented advanced player, or an aspiring competitor, understanding tension loss and DT value behavior is essential for making informed choices to select the right equipment for yourself!
Choosing a string with stable tension retention, pairing it with appropriate static tension, and monitoring DT changes based on swing speed and play frequency are the keys to long-term consistency and confidence.
Consulting stringers for fine adjustments is always strongly recommended!
The true value of a professional stringer lies in bridging the gap between âunfamiliarâ and âperfectly dialed-in.â
