Tag: Turbo Charging 70i

Introduction

In addition to the Banana War God, Li Junhui, this racquet also had early endorsements from the Grand Slam champion Zhao Yunlei and the “Sweetheart” Wang Xinling (just kidding).

Basic Parameters

• Weight: 5U
• Balance Point: 305mm
• Shaft Length: 222mm, moderate hardness, slightly soft.
• Breakwind Frame
• 29-pound N68 string

Thoughts on ‘Ultra-Light Racquets’

Before discussing the feel, let’s talk about ultra-light racquets (5U and below). Generally, ultra-light racquets face two main issues:

1.Leverage: Due to the light weight, if the balance point is very low, the leverage effect is minimal. This makes it necessary to apply extra effort to achieve distance even on high clears, which further impacts offensive performance. To achieve leverage, a head-heavy design can be used to increase the balance point. Alternatively, leveraging the shaft’s deformation can help, which means the shaft should not be too stiff and must have good elasticity. A high balance point combined with a less stiff shaft is ideal.

2.Stability During Impact: Head-heavy racquets with a soft shaft may suffer from excessive frame wobble during powerful shots, leading to reduced stability and precision. To address this, it’s essential to balance the shaft’s hardness, elasticity, and torsional rigidity (referred to as the shaft’s bending stiffness).

Energy 70I

• Pure Breakwind Frame
• 5U weight
• Balance Point is not low
• Most importantly, the shaft is long and soft

These factors directly contribute to instability in the hitting feel.

Overall Feel

The most noticeable initial impressions are the light weight and the prominent Breakwind feel. It is positioned as a “sugar water speed racquet,” which means it’s easy to use and visually appealing. The description “sugar water speed racquet” encapsulates its primary characteristics.

Negative Experiences

From my personal experience, there are some aspects I found uncomfortable. The intended characteristics of being “light” and “fast” should be the main features of this racquet. However, the long and soft shaft results in poor elasticity. The shaft feels quite stiff, which affects the force transmission and slows down shot speed. The swing speed isn’t slow, but the shot feels less crisp. (I used it with 29-pound N68 strings, which are relatively elastic, somewhat compensating, but it still felt less direct.)

A fellow player in a discussion group described it as “long power,” which means the long and soft shaft delays the power transmission, unlike the quick response of a short shaft. This long and soft shaft is a disadvantage in the mid-court. In the backcourt, high clears are easier with more leverage, but smashes feel weak due to the soft shaft and Breakwind frame.

Did Li Junhui Really Use This Racquet for Smashing?

It’s possible that Li Junhui’s exceptional skills could be the reason for the powerful smashes, rather than the racquet’s strength. Another plausible explanation is that the version he used was different from the retail version available to the public. Li Junhui mentioned in interviews that he prefers light racquets, and there are reports of a 3U version of the Energy 70I used by him.

However, these speculations aside, the retail version we can purchase is a relatively “sugar water” light-speed racquet.

Just the fact that it’s the “Zhao Yunlei signature racquet” already gives it enough of an

After the Energy series was introduced, this legendary racquet naturally came under the Turbocharge banner. The current test is of a used racquet, and although I haven’t played with it extensively, it perfectly matches my stereotypical impression of high-end Li Ning racquets from that era. Not in a derogatory way, not at all.

Specifications: 5UG6, stripped down, current total weight 86.0g, balance point 306mm, shaft length 220mm, moderate hardness, Energy Reversal Breakwind Frame, 76-hole string bed, 8-2 o’clock string groove, 32-pound warranty, strung at 25-27 pounds with BG65TI.

Many might have bought this racquet for its cute pink design. The racquet head is white, with cyan-green on the wings, and the frame lower part is entirely pink, creating a layered and stylish appearance. The Energy 70I seems to be the first Li Ning racquet with such a pink design, representing a transformation from the “tomato and egg” era. However, it doesn’t quite fit Zhao Yunlei’s image, haha. Moreover, the sharp Breakwind Frame combined with the painting process of that time makes it prone to chipping, which becomes quite noticeable. The racquet I have has several visible chips.

I wonder if any female players bought it for its looks but found it unsuitable for them, similar to the fate of the Speed 12F. Even I felt that this 5U racquet was unexpectedly heavy, which perfectly fits my stereotypical view of older Li Ning 5U racquets — ultra-light but with high swing weight, like a meteor hammer.

The head-heavy design indeed provides a noticeable leverage effect. During warm-up for high-clear shots, the 70I felt comfortable to use. With a long shaft, the deformation threshold is low, and the racquet face and sweet spot are exceptionally large. The slightly wider frame compared to the Blade series makes it easier to adapt to high swing speeds, allowing for accurate high-arcing backcourt shots.

It might be my illusion, but I feel the 70I doesn’t have as much “sugar” as the 3UN72. Although the shaft hardness between the two seems not drastically different, the 70I is rated lower in hardness according to equipment information.

In flat drives, while not extremely agile, it surprisingly has power. Due to the strong head-heavy feeling, the 70I experiences a slight delay during the transition from setting up to swinging, forcing users to adjust their grip position to improve continuity. However, during continuous drives, the 70I shows a noticeable driving force, utilizing the shaft’s elasticity to produce powerful and aggressive shots. The large sweet spot makes it easy to handle, and despite being somewhat unskilled, I found it challenging to handle shots to the side, but everything else was manageable.

The 70I has an extremely strong smash capability. Even for many amateur male players, the feedback and shot quality during attacks are excellent. Although many criticize older Li Ning racquets for their soft shafts, the elasticity is quite good. Additionally, the high balance point adds to the weight of the head during smashes. Zhao Yunlei’s comprehensive skill level complements this racquet well — I retract my earlier comment.

Moreover, I think this racquet is quite sufficient for many singles scenarios. The large racquet face and solid feel boost confidence in net play. Its defensive adaptability is also impressive; the large face and high elasticity make it easy to handle defensive shots, although controlling the shuttle to the backcourt requires some effort to avoid going out.

However, it’s not without flaws. The racquet still has issues with direction control during long shots. Whether it’s due to the Breakwind Frame’s inherent disadvantage or the soft shaft leading to head wobble, the 70I’s performance in controlling long-shot placement isn’t as precise, lacking in hardness and directness.

Overall, I see this as a direct competitor to the Speed 12F, and after using it, I feel a sense of wanting more.