The range or scale for stiffness for racquets will usually fall between 50 and 85, where the ...
Racquet stiffness is a measurement of how much a racquet bends when it makes contact with the ...
More Tennis Racquet Frame Stiffness Scale images
Stiffness is measured in Rahmen (RA). A racquet with an RA rating between 55 and 60 or below 64 is considered a flexible tennis racquet. At the same time, a semi-rigid tennis racquet stiffness ranges between 65 and 69. RA value above 69 indicates more stiffness; therefore, stiff racquets lie in this category.
The most widely used stiffness ratings are generated off the Babolat RDC (Racquet Diagnostic Center). The Racquet Analysis ( RA rating) score is used on their entire lineup including the Babolat Pure Drive on a 1-100 point scale. The higher the number, the stiffer the tennis racket.
It is denoted by RA and quoted as a number. Racket stiffness is usually between 50 and 80. Higher RA indicates that racquets are stiffer, and on the other hand, lower RA is an indicator of more flexibility. In simple words, a racquet with a stiffness rating of 50 will bend more as compared to a racquet with a stiffness rating of 70 or 80, but their other specs like head size and weight must be identical. How to Measure Tennis Racquet Stiffness?
The stiffness is measured in RA, and most rackets fall between 55 and 72 on the scale. RA simply stands for stiffness rating. It is measured by placing a specific amount of weight on a lever, which bends the frame. Lower numbers indicate more flex; higher numbers indicate less flex. The stiffness of a racket directly affects the power of the frame.
Stiffness and Power. A stiffer racquet will not bend as much as a more flexible one. Bending loses energy because the frame does not snap back by the time the ball leaves the strings. By using the program above, you will notice that frame stiffness seems to matter least just below the center of the racquet and most near the tip.
We measure frame stiffness and give each frame a score (RA). You will see the RA in the spec tables on our racquet description pages. Here's a general breakdown of how to decode the measurements: Flexible frame = 63 and below. Medium stiffness = 64 to 67 . Stiff frame = 68 and above