We recently made a post about a type of tennis racquet stringing machine, the drop weight machine. Another type of tensioning system is the Spring Tension (also known as lockout machine).
This type tennis racquet stringing machine is marketed in many forms with regard to frame support and string clamping configurations. The tension head is wound back by a rack and pinion which is mounted to an extending bar. The desired tension of this tennis racquet stringing machine is set by turning a thimble, this compresses a spring and moves a pointer along a graduated scale.
The spring controls how much linear force is needed before the tension head lifts to releases a lever, which then locks the the mechanism in place. Frame support is usually 6 point, 4 K supports on the outside arms at 2-4-8-10 o'clock , and 2 poles inside the frame at 12 and 6 o'clock. This is generally regarded as the best because the frame is supported, not clamped.
It relies on the action of tensioning the main strings to stabilizes the frame in the K supports, and against the head and throat posts. There should be little or no distortion compared to the unstrung frame shape once the string job is finished with this system.
String clamping will be either glide bar or 360deg rotational clamps, with the latter being the best option for Tennis. Both table top and floor standing models of these tennis racquet stringing machines are available.
This type tennis racquet stringing machine is marketed in many forms with regard to frame support and string clamping configurations. The tension head is wound back by a rack and pinion which is mounted to an extending bar. The desired tension of this tennis racquet stringing machine is set by turning a thimble, this compresses a spring and moves a pointer along a graduated scale.
The spring controls how much linear force is needed before the tension head lifts to releases a lever, which then locks the the mechanism in place. Frame support is usually 6 point, 4 K supports on the outside arms at 2-4-8-10 o'clock , and 2 poles inside the frame at 12 and 6 o'clock. This is generally regarded as the best because the frame is supported, not clamped.
It relies on the action of tensioning the main strings to stabilizes the frame in the K supports, and against the head and throat posts. There should be little or no distortion compared to the unstrung frame shape once the string job is finished with this system.
String clamping will be either glide bar or 360deg rotational clamps, with the latter being the best option for Tennis. Both table top and floor standing models of these tennis racquet stringing machines are available.
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