About the Astrox series
A racket designed for power. The Astrox series (which replaces the Voltric range) was created for players with an aggressive offence. It has a head-heavy balance so you can attack with confidence and put away every smash.
Astrox 77 Play weight: 83 g - 4U (80-84 g)
The weight (actually the mass) is measured in grams. Racket weights range from 60 g to over 100 g. They are grouped into weight categories expressed in "U". The lighter the racket, the more comfortable and easier it will be to handle. It will put less stress on your arm and feel faster to swing. The heavier the racket, the more power you'll get.
Astrox 77 Play flex: Hi-flex
Flexibility is defined as the shaft's capacity to bend while hitting. Shafts can range from flexible to stiff. The more flexible the shaft, the more forgiving and comfortable it will be. It will also help you hit longer shots. The stiffer the shaft, the more repulsion power and precision you'll get, but you'll also need to be able to swing quickly. You should also keep in mind that a stiff racket is not very forgiving.
Astrox 77 Play balance: Head heavy.
Balance refers to the racket's weight distribution. It is indicated in millimetres and is measured from the base of the handle to the balance point. A head-light racket will be more manoeuvrable and responsive, making it perfect for defensive and doubles players. Head-heavy rackets will provide more power, making them the ideal choice for offensive players. However, they can feel heavy and difficult to swing.
Astrox 77 Play composition: Graphite
The price of a badminton racket is affected by its composition. Steel and/or aluminium rackets are sturdy, heavy and better suited to recreational use. Graphite/aluminium and full graphite rackets are lightweight and perfect for beginner and intermediate players. Finally, rackets made from High-Modulus Graphite and other materials like tungsten are designed for advanced players.
Astrox 77 Play length: 675 mm
The length of an adult's racket is measured in millimetres and ranges from 660 mm to 680 mm. Only the length of the racket shaft varies. The shorter the shaft, the easier it will be to handle and the better the feel. A longer shaft will give you a higher swingweight for added power.
Astrox 77 Play grip size: G5 = small (80-84 mm)
Grip size is measured in millimetres. Grip size varies from 75 mm to over 90 mm and is categorised into size ranges expressed in "G". While a larger grip is easier to hold, it can make changing your grip more difficult. A smaller grip is easier to wield and lets you put more power on the racket by using your fingers.
Astrox 77 Play factory strings
Rackets come pre-strung with Yonex multifilament string with a gauge of 0.70 mm.
Astrox 77 Play factory tension: 8-9 kg/17.5-20 lbs
Tension is expressed in kilograms (kg) or pounds (lbs). Rackets are strung at around 9 kg (20 lbs), but note that strings lose tension over time.
Astrox 77 Play recommended tension: 9-12.5 kg/20-28 lbs
Every brand recommends a maximum tension for their rackets to prevent the string or frame from breaking while stringing or hitting. Some rackets have a reinforced frame that can take a tension of up to 16 kg/35 lbs.
Astrox 77 Play string pattern: 22⨯21
The string pattern is indicated with the number of vertical strings ⨯ the number of horizontal strings. In badminton, these are referred to as mains ⨯ crosses. A more closed string pattern will give you greater power and comfort, but the strings won't last as long.
Stringing instructions for 76 holes with the first cross at A7: A = top, B = bottom
4 knot stringing instructions. Mains: start from top centre and continue to B9 (skipping A7, A9 and A11). Go through B12 towards A16, then go back to A14, down to B10 and finish by tying off at B8. (same other side)
Crosses: Make a knot at B6 and start crosses from B9. Keep on stringing until A7 (skipping A12 and A10) and finish by tying a knot at A5.
Astrox 77 Play frame technology
Graphite, AERO+BOX Frame, ISOMETRIC, Rotational Generator System
Astrox 77 Play shaft composition
Graphite, Built-in T-Joint
Aero+Box Frame
The frame combines an aerodynamic front profile with an extra stiff rear profile for a faster swing and a solid, stable feel when hitting the shuttlecock.
Rotational Generator System
By applying the principle of counterbalance, weight is distributed from the end of the handle towards the head for maximum control. The transition to the next shot can be done smoothly and in rapid succession
Isometric
The Isometric design increases the sweet spot by 7%*. A square-shaped Isometric racket creates a larger sweet spot than a classic round frame by optimizing the intersection of the mains and crosses.
BUILT-IN T-JOINT
The built-in T-joint reinforces the connection between the shaft and frame while reducing twisting for greater control
Article code and colour
AX77-PL Orange
User tips
Recommended strings for a player looking for control: AEROBITE, for hard-hitting players: EXBOLT 65
International players who use the Yonex ASTROX 77 racket
AN SE-YOUNG (SOUTH KOREA), CHEN YUFEI (CHINA), FAJAR ALFIAN (INDONESIA), MUHAMMAD RIAN ARDIANTO
(INDONESIA), HUANG YAQIONG (CHINA), HUANG DONGPING( CHINA)
