TWU String Database question

[Allcourtguy]

Hello all,
Can you tell me how the static tension loss is measured? Does the racquet just sit for a period of time, or is there some type of impact testing?

Also, is there a link that gives the definition / measurement process for each of the search criteria? If not, I think that would be extremely beneficial to folks in the forums.

thanks,
Allcourtguy

 

[moon shot]

I'm interested in this as well, specifically how the impact, static, and total tension relate to each other.

TW probably already knows this but I've tried way more strings than I would have otherwise thanks to being able to compare them via TWU.

 

[TW Staff]

Allcourtguy,

I have passed along your question to the TW Professor.

Thanks,
Brittany, TW

 

[Allcourtguy]

Thanks Brittany, I appreciate it.

 

[TW Professor]

The static measurement part of the test is simply a 60 second wait after the string is pulled to tension. This is when most of the tension loss due simply to existing occurs. The rate of static loss slows dramatically after that. That is followed by 20 stabilization impacts. These also cause a lot of loss, but again, the rate of loss slows dramatically after several hits (comparable to your warmup hitting with a new string job). Then the stiffness test is performed. The stiffness number is thus a realistic representation of the playing properties you are most likely to experience on court.

There is not currently a list of explanations of all the testing terms. It is on the to do list.