I don't think so because this is a very good way to judge the tension maintenance of a string. Pre stretch for polys is taking the soul of the string away. Just what I think)
Einca thanks for the answer.
In which poly do you have this experience?
"Whats your average percentage loss after 2 hours of hitting?"
What is so hard to get here?
If other stringers have experiences to share, in terms of which string is losing how many dt, and how fast... That's interesting to compare
Can I ask which/type of machine it was strung on?The DT decreases are typical as described when I use Tourna Black Zone, TruPro Black Knight and Pure Rush as well as Grapplesnake M8. Some strings I have used in the past like ALU (no surprise) and Cyclone Tour are worse and 4G Soft is better.
Can I ask which/type of machine it was strung on?
Tourna 700-ES Electronic Constant PullCan I ask which/type of machine it was strung on?
Some manufacturers prestretch their polyI think part of this is the stringer and their thoughts about poly and stringing it.
I can pre-stretch the heck out of poly so it plays like crap and have it maintain its tension... Or, I can not and string poly so that it plays as the manufacturer designed it to play but not perhaps play forever.
I think the question is meaningless.
Some manufacturers prestretch their poly
But it makes it retain tension better which is why manufacturers do it. Just saying in a thread about tension loss in poly that prestretching the string pulling on one end will improve tension maintenanceExactly, so pre stretching it again would even make it deader which is another reason I do not pre stretch any poly I string.
But it makes it retain tension better which is why manufacturers do it. Just saying in a thread about tension loss in poly that prestretching the string pulling on one end will improve tension maintenance
You missed my point entirely. As someone who strings racquets it all depends how the string is strung. The information you are attempting to assemble here is meaningless without taking into account how the string was strung. Just having people provide feedback on string and how it drops tension 2 hours later doesn't really mater.
There are people on this board who pre-stretch all their poly string. Others, like me that don't.
Well its true that if no one asks for prestretching then you shouldn’t do it. And since prestretching reduces tension loss and increases string job life there is a negative incentive for stringers who string for others (presumably for cash) to do it. “Let me get this straight, you want me to spend MORE time on a string job and make it last LONGER? That is not smart business!!”Correct. The difference is that the manufacturer is designing for sale the string with those characteristics and doing so in a controled/automated environment so it is done consistently from string to string.
Identifying a string you like say string ABC and then stretching produces a totally different string DEF let alone / ignoring the ability to do it consistently from string job to string job.
As someone who strings for others if I get a request to string ABC at 50 lbs I am not going to pre stretch it and give them string DEF back to them at 50 lbs.
Well its true that if no one asks for prestretching then you shouldn’t do it. And since prestretching reduces tension loss and increases string job life there is a negative incentive for stringers who string for others (presumably for cash) to do it. “Let me get this straight, you want me to spend MORE time on a string job and make it last LONGER? That is not smart business!!”
But if you are a home stringer its a totally different deal.
Its possible to be consistent on the prestretching. You just measure the total elongation. Or measure the time under tension. This is with a manual means. Not talking about machine prestretching because I don’t think it stretches the string permanently.
Since I always do hybrids and prestretch both mains and crosses, thats 2 jobs from packs of strings that will string the same. Or if I have reels I can prestretch several string jobs from one prestretching session.
Its also possible to prestretch and string at a lower tension to get a similar feel and still get the tension maintenance. I can see that as a competitive edge. You string a prestretched string say 10 lbs lower, say 40lbs and no way another stringer can get the same feel with a non prestretched string at the same 40lbs. But as I said before stringing so tension loss is baked in is just good business
I would prestretch if asked. I am not asked.
While a pre-stretch does help with longevity it does change the string performance in other ways.
As far as consistency. If today I take a piece of string and wrap it around a pole and lean back for 1 minute and get an additional foot out of the string and I like how it performs and tomorrow I take another piece of the same string and wrap it around the same pole and lean back for minute and measure and get 2 feet simply because it's a new day and I had a cheeseburger for lunch and am heavier what am I supposed to do?
My point is I am going to put that string in my racquet but it is not going to perform the same.
The next day I may get a foot and half. There is no way to be precise.
I do like your idea of doing the pre stretch all in one session to eliminate the cheeseburger factor but still not sure how one ever would get to a consistent repeatable process.
This is one of the things I weed out when testing strings. If it doesn't play consistently enough to my liking until I break it, then I don't use that string. There are a lot of polys that get thrown out because of that requirement, and not too many nylons. ALU was probably one of the fastest NOs I've tested. Maybe some of the polyfibre strings were close or faster, but a lot of people still use ALU, so obviously the customers don't always care about tension loss.And since prestretching reduces tension loss and increases string job life there is a negative incentive for stringers who string for others (presumably for cash) to do it.
come on man. You are using the wrong metrics for consistency. Instead of minutes, measure the elongation. Set a goal, say 2" and just stop when you get there. Its not that hard. IIRC there are tools you can get at harbor freight and stretch and measure the results. @graycrait has done all the work on that front.I would prestretch if asked. I am not asked.
While a pre-stretch does help with longevity it does change the string performance in other ways.
As far as consistency. If today I take a piece of string and wrap it around a pole and lean back for 1 minute and get an additional foot out of the string and I like how it performs and tomorrow I take another piece of the same string and wrap it around the same pole and lean back for minute and measure and get 2 feet simply because it's a new day and I had a cheeseburger for lunch and am heavier what am I supposed to do?
My point is I am going to put that string in my racquet but it is not going to perform the same.
The next day I may get a foot and half. There is no way to be precise.
I do like your idea of doing the pre stretch all in one session to eliminate the cheeseburger factor but still not sure how one ever would get to a consistent repeatable process.
come on man. You are using the wrong metrics for consistency. Instead of minutes, measure the elongation. Set a goal, say 2" and just stop when you get there. Its not that hard. IIRC there are tools you can get at harbor freight and stretch and measure the results. @graycrait has done all the work on that front.
And to be clear you don't wrap around a pole and pull on both ends. You attach one end and pull on the other end to actually stretch the string permanently.
Its probably true that prestretching will change the characteristics. I contend that you can lower the tension and still get a similar playability. Though sure I like it as stiff as possible myself which for me is another reason to prestretch.
Its tennis and tennis string, so "proper" is open to debate for sure. I think TW did a vid on the different ways to prestretch. For tension maintenance you need to perm elongate the string. This is their vid and they don't exactly do it right. The first is the closest option but it needs to be longer duration and a way to measure the elongation, but gives an idea.I have never stretched poly so wasn't aware of the proper way to do it. Thanks
Its tennis and tennis string, so "proper" is open to debate for sure. I think TW did a vid on the different ways to prestretch. For tension maintenance you need to perm elongate the string. This is their vid and they don't exactly do it right. The first is the closest option but it needs to be longer duration and a way to measure the elongation, but gives an idea.
Relaxation is happening everywhere.Anyone here having a list of DT measurements after 24 hours after stringing without playing?
Well, I have no idea whether you are familiar with the subject at all.I was hoping you guys could share your most tension stable strings.
Not subjective, i mean by measuring in terms of dynamic tension.
Guys, when you string a racket, after the process of stringing it is 30 DT. Next days you play 2 hours and it only drops to 28 DT.
How would you rate it in numbers?
1 is worst 10 is best.
Keep in mind that the 30 DT wasn't measured before the tennis session, it was measured directly when it came out of machine.
Thanks for sharing. Which string are you using?
That is very good, but it can vary from the string type, how hard you're hitting etc so don't worry too much about it. I would use it as a reference to have as a base. I tested a 1.15mm string for fun this summer and I saw it drop 6pts after one practice. My preferred DT is around 36-37 off the stringer, I usually restring or the strings break at around 30-31 DT. So I use the ERT to check when I have multiple frames I'm rotating in my bag.Guys, when you string a racket, after the process of stringing it is 30 DT. Next days you play 2 hours and it only drops to 28 DT.
How would you rate it in numbers?
1 is worst 10 is best.
Keep in mind that the 30 DT wasn't measured before the tennis session, it was measured directly when it came out of machine.