Weight
87g
Thickness
6.5mm
Plies
7-ply
Handles
FL
Material
AllWood
Head Shape
Standard
Balance
Balanced
KTL (LKT) LKT Blackwhirlwind Transformer
KTL Blackwhirlwind Transformer is a 7-ply all-wood blade built for versatile, all-around play, blending speed and spin for a dynamic game. Its standout feature is the innovative Sweet Spot Transformer system, allowing players to adjust an internal weight within the handle. This customization shifts the blade's balance, enabling fine-tuning from an attacking ALL+ to a controlled DEF+ style. Perfect for intermediate to advanced players seeking a highly adaptable tool that responds to their evolving technique.
The blade is built with seven layers of wood veneer. While the specific wood types for each ply are not detailed, this symmetrical 7-ply all-wood construction is designed to provide a harmonious balance of speed, control, and dwell time for versatile all-around performance.
TT Sensei Ratings
✦Our expert analysis of this blade's performance characteristics
This blade delivers solid offensive speed suitable for an all-around attacking game. Players report it feels quick and responsive. The adjustable balance system further enhances this, as moving the weight to the top of the handle can increase power output for more aggressive shots.
Control is where this blade truly excels. Feedback consistently highlights its exceptional precision and predictability. The Sweet Spot Transformer system amplifies this strength; setting the weight to its lowest position prioritizes control and stability, making it highly effective for defensive and placement-oriented play.
The blade offers a medium feel, striking a balance between feedback and solidity. It provides clear tactile sensation on contact without being overly soft or excessively hard, which aids in touch shots and spin generation while maintaining stability for drives.
It typically produces a medium-high throw angle, which is ideal for aggressive topspin play. This arc helps generate effective loop drives and opening attacks over the net while maintaining a good level of control and safety in rallies.
The 7-ply all-wood construction and medium flexibility contribute to a good dwell time. This allows the ball to stay on the racket face slightly longer, which is beneficial for brushing loops, adding spin, and executing controlled shots with greater consistency.
The blade possesses a medium level of flexibility. This balanced stiffness provides a good compromise, offering enough bend for catapult effect and dwell time on loops, while remaining stable and direct for blocks and faster counter-attacks.
As a 7-ply all-wood blade, it provides a moderate level of vibration feedback. This gives players a tangible connection to the ball without being overly harsh or numb, offering useful information for shot adjustment and feel.
User feedback points to high build quality and consistent performance. The innovative adjustable mechanism is reported to be well-integrated and reliable. While individual ratings vary, the overall sentiment confirms this is a well-made, versatile blade that performs dependably across different styles.
Technology
The core innovation is the Sweet Spot Transformer system. This technology features a movable weight cartridge embedded within the handle. By sliding this weight up or down, players actively change the blade's balance and sweet spot characteristics. Positioning the weight high increases head-heaviness for more power and a larger sweet spot during attacks. Moving it low creates a more handle-heavy balance, enhancing control, stability, and precision for defensive or placement-focused play. This transforms a single blade into a customizable tool adaptable from ALL+ to DEF+ styles.
Similar Blades
LKT Blackwhirlwind (Standard Version)
Players report a distinct LKT version of the Blackwhirlwind that is not the Transformer model. This alternative is often described as feeling softer and offering slightly more speed. It represents a more traditional, fixed-balance option within the same family for those who prefer a consistent feel without the adjustable technology.