String Tension Loss

larry10s

Hall of Fame
since strings lose tension after they come off the stringing machine when you "string tighter" by 2-4 lbs before long you are back at the tension that had "too much power". why does the conventional wisdom work. i know the concept of the trampoline effect but why dont you feel the same "trampoline effect when you get back to that tension range?
 

YULitle

Hall of Fame
Are you asking, "why doesn't stringing at 50 lbs. feel the same as 60 lbs minus 10 lbs. worth of time?"
 

larry10s

Hall of Fame
yes . thanks for responding. p.s. on another post i asked if the recommended string tension on racquets was to protect the frame or for maximum playability? i repsect your answers.thanks again
 

YULitle

Hall of Fame
yes . thanks for responding. p.s. on another post i asked if the recommended string tension on racquets was to protect the frame or for maximum playability? i repsect your answers.thanks again

Strings not only lose tension, but they lose their resiliency. This, amongst other things, accounts for the difference. Not to mention that you can't accurately catalog the loss of tension in any universal way.

The recommended string tension, I believe, is for both, but more for playability.
 

larry10s

Hall of Fame
am i correct to infer from your reply that if you could measure tension and resiliency and i guess any other characteristic in this hypothetical example that the string that started at 60lbs and measured at 50lbs would have different measurements than the string strung at 50lbs. yes?
 

TenniseaWilliams

Professional
so your strings will drop to the same tesnoin no matter what they are strung at?

Correct.......

YULitle is absolutely correct, however, he didn't mention that in any reasonable amount of time this is not true.


am i correct to infer from your reply that if you could measure tension and resiliency and i guess any other characteristic in this hypothetical example that the string that started at 60lbs and measured at 50lbs would have different measurements than the string strung at 50lbs. yes?

I don't think strings lose resiliency in this situation. Since the strings are elongating, they are losing diameter and tension. The strings installed at 60lbs would be thinner when they reached 50lbs than strings installed at 50lbs. (all installation details being equal)
 

YULitle

Hall of Fame
am i correct to infer from your reply that if you could measure tension and resiliency and i guess any other characteristic in this hypothetical example that the string that started at 60lbs and measured at 50lbs would have different measurements than the string strung at 50lbs. yes?

Correct

Your strings will drop to the same tension, no matter what tension they are initially strung at? I don't think this is true, unless they break.

No. That's not what I was suggesting. Strings lose tension forever but at a decreasing rate.
 

TenniseaWilliams

Professional
Strings not only lose tension, but they lose their resiliency. This, amongst other things, accounts for the difference. Not to mention that you can't accurately catalog the loss of tension in any universal way.

The recommended string tension, I believe, is for both, but more for playability.

On p 276 Physics and Technology of Tennis, they describe hitting a nylon string the equivalent of 1200 serves at 120mph, after allowing the stringjob to set 1000 seconds, with no loss of resiliency/elasticity. Tension loss was present and measurable in both stages. To me it is a convincing test.

I am guessing what you mean by cataloging the loss of tension... complaint about current test equipment and/or lack of results interpretation? Or the lack of an objective measurement at which the stringbed is dead?

Thanks YULitle, you must be pretty bored to keep putting up with me. :oops:
 

YULitle

Hall of Fame
On p 276 Physics and Technology of Tennis, they describe hitting a nylon string the equivalent of 1200 serves at 120mph, after allowing the stringjob to set 1000 seconds, with no loss of resiliency/elasticity. Tension loss was present and measurable in both stages. To me it is a convincing test.

I am guessing what you mean by cataloging the loss of tension... complaint about current test equipment and/or lack of results interpretation? Or the lack of an objective measurement at which the stringbed is dead?

Thanks YULitle, you must be pretty bored to keep putting up with me. :oops:

It's always been something that I've been told that not only do string lose tension but they become more stiff. Sadly that's more anecdotal.
 
Top