Table Tennis Net Tension

[Marcus Allison]

I can't recall if I've brought up this issue before but I certainly think it warrants discussion:

There are quantifiable rules governing all aspects of the game -- the size of the ball, the weight of the ball, the size of the table and its height, and the height of the net; but, what's not quantifiable is the tension the net is supposed to possess. The rules only convey that the net is supposed to be 'tight', but that isn't a measurable characteristic, unlike everything else:


Here is what is said about the net:

2.2    THE NET ASSEMBLY

2.2.1 The net assembly shall consist of the net, its suspension and the supporting posts, including the clamps attaching them to the table. 

2.2.2 The net shall be suspended by a cord  [emphasis mine ] attached at each end to an upright post 15.25cm high, the outside limits of the post being                   15.25cm outside the sideline. 

2.2.3 The top of the net, along its whole length, shall be 15.25cm above the playing surface. 

2.2.4 The bottom of the net, along its whole length, shall be as close as possible to the playing surface and the ends of the net shall be attached to the                     supporting posts from top to bottom.

This is intriguing.  Nothing in the rules denotes the tensility that the net ought to possess. Indeed, the measurements of the ball are made clear, the length and height of the table, but net tensility isn't afforded a quantifiable measurement; I think it should. 

The assumption is that the net should be made taut, but over time, as the net ages, regardless of how tight one might make the net, it loses tensility; it wears out. The ball inevitably makes contact with the net and there is often no way of knowing how it will affect the trajectory. Maybe if there is a gauge engineered to measure how tight the net is, then that would make play more predictable.  Also, if we could measure net tensility we could objectively know when it is time to invest in a new net. 

Marcus Allison

  

  

[Marcos]

I’ve always thought the nets should be hard plastic/metal (like in the park) so that it’s consistent 

On Feb 22, 2024, at 5:20 PM, Marcus Allison <mha...@gmail.com> wrote:



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[Marcus Allison]

And for the record, there are ways to measure tension:

• A Tension meter - This tool measures a string's tension directly. It has clamps that attach to the string and a gauge that displays the tension reading in units like kilograms or pounds. Some models can test both static and dynamic tension.
• Tuning forks - When struck and placed against a taut string, the tuning fork resonates at a specific frequency based on the tension. The sound and vibration indicate relative string tightness.
• Tennis racquet stringers often have built-in tensiometers that clamp the string and measure its tension during stringing to a precise target.
• Some use simple devices like hanging small weights from the string and observing the deflection to estimate tension.
• Apps are also available that use visual analysis of string deformation under a known weight to calculate an approximate tension value.
• Acoustic resonance methods involve analyzing the sound waveform produced when striking the string to estimate tension based on frequency.

So, there are various ways to quantify the measurement of net tightness. This could potentially be applied to determine an optimal, standardized tautness for table tennis nets.

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[Marcus Allison]

Aargh! I have always hated the way the ball ricochets off of those things!

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