omgitsanoob
New User
Hi there!
Recently I have found the TWH String Comparison Tool but I think I didn't get right yet what the numbers and measurements are meaning. Here is the list of available and interesting measurements to show and my interpretation. I would kindly ask you to agree or correct me:
- Static Stretch at x lbs = How much the string will stretch itself at the given weight within a specific time, I guess 60s.
- Actual tension (Actual Pre-impact Tension in lbs) = The chosen tension for stringing minus the total loss, so the remaining tension after the complete stringing job and 20 serve-alike hits.
- Impact Tension Change (lbs) = This one seems to be the additional tension on the string when hitting one of these 120mph serves (in addition to the actual pre-impact tension).
- Impact Duration = This should be the time a ball will spend on the strings with the given parameters.
- Transverse Force = I have no idea at this one!
- Static Tension Loss = "In the string test, we wait 60 seconds after we pull to reference tension in the test apparatus. After 60 seconds we measure the tension. The difference between reference tension and 60 second tension is the static loss. " As mentioned by TW Professor in another thread. So the reference tension minus this one represents the tension the string will keep between stringing and the first hits.
- Stabilization Tension Loss = "...Then we measure tension again. The difference between the 60 second tension and the tension after 20 hits is the stabilization tension loss." Will there be more tension loss after the "actual tension" test that will be as noticeable as those between the first 20 test serve hits? Or is this Stabilization Tension Loss an indicator with what tension one will play with for a while?
- Impact Tension Loss = Is this how much tension will be lost with every following 120mph serve after the actual tension test? If so, will this be almost linear?
- Energy Return (%) = How much energy will be returned to the ball? Where is the rest going to?
And a following question: Is the crispyness of a string defined by the dwell time or the tension change (or both)? Is a string harsh on the arms when the tension change is high, the sum of tension change and actual pre-impact tension is high or the stiffness in some combination with a tension?
Thank you and sorry for my bad English, greetings from Germany.
Recently I have found the TWH String Comparison Tool but I think I didn't get right yet what the numbers and measurements are meaning. Here is the list of available and interesting measurements to show and my interpretation. I would kindly ask you to agree or correct me:
- Static Stretch at x lbs = How much the string will stretch itself at the given weight within a specific time, I guess 60s.
- Actual tension (Actual Pre-impact Tension in lbs) = The chosen tension for stringing minus the total loss, so the remaining tension after the complete stringing job and 20 serve-alike hits.
- Impact Tension Change (lbs) = This one seems to be the additional tension on the string when hitting one of these 120mph serves (in addition to the actual pre-impact tension).
- Impact Duration = This should be the time a ball will spend on the strings with the given parameters.
- Transverse Force = I have no idea at this one!
- Static Tension Loss = "In the string test, we wait 60 seconds after we pull to reference tension in the test apparatus. After 60 seconds we measure the tension. The difference between reference tension and 60 second tension is the static loss. " As mentioned by TW Professor in another thread. So the reference tension minus this one represents the tension the string will keep between stringing and the first hits.
- Stabilization Tension Loss = "...Then we measure tension again. The difference between the 60 second tension and the tension after 20 hits is the stabilization tension loss." Will there be more tension loss after the "actual tension" test that will be as noticeable as those between the first 20 test serve hits? Or is this Stabilization Tension Loss an indicator with what tension one will play with for a while?
- Impact Tension Loss = Is this how much tension will be lost with every following 120mph serve after the actual tension test? If so, will this be almost linear?
- Energy Return (%) = How much energy will be returned to the ball? Where is the rest going to?
And a following question: Is the crispyness of a string defined by the dwell time or the tension change (or both)? Is a string harsh on the arms when the tension change is high, the sum of tension change and actual pre-impact tension is high or the stiffness in some combination with a tension?
Thank you and sorry for my bad English, greetings from Germany.
