2012 PDR, full poly

[Dennison]

Hi all

I've been playing with this set up for 2 months and like it a lot. I use Tornado 50 lbs full bed.

Many people on this forum use hybrid set ups for this racket. Is there anything wrong with using full poly on this particular racket? I always thought full poly gives more control, spin.

I have never had any arm issues.

 

[Power Player]

Not at all. Just be careful and change strings every 10 hours.

That being said, if you have had the same set of strings in your pdr for 2 months, you are damaging your arm, and also do not need poly.

 

[Anton]

Not at all. Just be careful and change strings every 10 hours.

That being said, if you have had the same set of strings in your pdr for 2 months, you are damaging your arm, and also do not need poly.

??

Why?

If anything lowered tension (from age) will result in less impact torque, not more.

My old poly string beds get very soft.

 

[The Djoker]

??

Why?

If anything lowered tension (from age) will result in less impact torque, not more.

My old poly string beds get very soft.

From what I understand, poly strings lose their elasticity very quickly as they age. So when this happens, they do not absorb shock as much anymore, which sends more to your arm. Makes sense.

 

[Power Player]

??

Why?

If anything lowered tension (from age) will result in less impact torque, not more.

My old poly string beds get very soft.

LOL..ok man.

:?

 

[Anton]

From what I understand, poly strings lose their elasticity very quickly as they age. So when this happens, they do not absorb shock as much anymore, which sends more to your arm. Makes sense.

Is there some sort of objective test on this?

My poly stringbeds are clearly the softest right before they pop where they lost a lot of tension.


Is there anyone that would directly claim that stringed got stiffer with age as opposed to softer?

 

[Yourtenniscoach]

Full poly set up in PDR = Arm suicide!

 

[Torres]

Is there anyone that would directly claim that stringed got stiffer with age as opposed to softer?

I think you're confusing tension loss over a lengthy period of time, with string stiffness. Your strings would have to lose a heck of alot of tension for the stringbed to feel soft.

Polys stiffen once they've gone dead. They don't get softer. Plastics lose their elasticity and resilience when they're repeatedly subjected to impact, torsional or longitudinal stresses (as is the case when hitting a tennis ball hundreds or thousands of times). Try playing with some Alu Rough that's had 10 hours of hitting on it at normal tensions, and tell me whether its soft.

 

[Anton]

I think you're confusing tension loss over a lengthy period of time, with string stiffness. Your strings would have to lose a heck of alot of tension for the stringbed to feel soft.

Polys stiffen once they've gone dead. They don't get softer. Plastics lose their elasticity and resilience when they're repeatedly subjected to impact, torsional or longitudinal stresses (as is the case when hitting a tennis ball hundreds or thousands of times). Try playing with some Alu Rough that's had 10 hours of hitting on it at normal tensions, and tell me whether its soft.

Can anyone show any objective evince of this mysterious "dead" state that poly string supposedly enters?

I know the strings notch and I know the strings get looser, I also know stringbed softens with time, not stiffens.

 

[Power Player]

Dude are you serious? How do you not know this stuff? Just go do some of your own research. It sounds like you need to.

Poly string loses elasticity is a nice start in google.

http://www.strategictennis.com/tennisstrings/Polyester_Tennis_Strings.html

"During the last few years a great deal of research has gone into trying to overcome this loss of tension and elasticity that have been the weakness of polyester strings"

 

[Anton]

Dude are you serious? How do you not know this stuff? Just go do some of your own research. It sounds like you need to.

Poly string loses elasticity is a nice start in google.

http://www.strategictennis.com/tennisstrings/Polyester_Tennis_Strings.html

"During the last few years a great deal of research has gone into trying to overcome this loss of tension and elasticity that have been the weakness of polyester strings"

Yes dude I am serious. I've never held a racket that had poly get looser but string-bed somehow get stiffer.


Research I recall showed no significant loss of elasticity, only tension.

Simple questions:

does stingbed get softer or stiffer after 5 hours of play? Are you saying at 10 hours it gets stiffer again?

If you take a freshly cut out poly does it not bend as freely as new poly? How is it less elastic exactly?

 

[Anton]

Cross and Lindsey (The Physics and Technology of Tennis) applied steady tension on the poly string and found that strings maintained their energy, resiliency and elasticity even after experiencing tension loss.

“We found that the energy loss was not zero, but close enough to zero to make no significant difference in the calculations.”

 

[Power Player]

If you want to argue that poly does not lose elasticity then I am not even going to reply anymore. Honestly, that is ridiculous.

Dead poly micro vibrates like crazy which is why so many people hurt their arms using it. It has nothing to do with how you soft you perceive a dead poly string bed to be.

I will let someone else educate you on this, because I seriously think you are trolling.

 

[Anton]

If you want to argue that poly does not lose elasticity then I am not even going to reply anymore. Honestly, that is ridiculous.

Dead poly micro vibrates like crazy which is why so many people hurt their arms using it. It has nothing to do with how you soft you perceive a dead poly string bed to be.

I will let someone else educate you on this, because I seriously think you are trolling.

HA! No I'm not trolling.

I just happen to have a difference of opinion to yours - if you can't tolerate to discuss that difference, then the issue is on your end not mine.


I remember when Chris from TW played around with lower tensions and he specifically commented on increased vibrations at very low tensions. This could be what you felt as your poly lost tension and doesn't necessarily point to changes in any other string property.

 

[Power Player]

Its really not opinion though. If it was, I'd get past my own bias and use full poly beds for 3-4 weeks all the time.

 

[Torres]

Begone troll!

Can anyone show any objective evince of this mysterious "dead" state that poly string supposedly enters?

At this point, I think the common expression is:

Trollololololololol.


My 'ignore list' seem to increase every week...

 

[Anton]

Its really not opinion though. If it was, I'd get past my own bias and use full poly beds for 3-4 weeks all the time.

well from my perspective I guess I too can say it's not a matter of opinion to me either.

I hit with my poly until it breaks and string-bed is always softer then what it is right after I string it.

Just the other day someone was saying how soft and comfortable my racket felt...with 2 month old string job on it and about 30 hours of play.

 

[Power Player]

I used to think my prestige was comfy after 15 hours of Black Magic as well.

Be careful.

and seriously, educate yourself on poly strings man.

 

[Anton]

I used to think my prestige was comfy after 15 hours of Black Magic as well.

Be careful.

and seriously, educate yourself on poly strings man.

And what exactly happened to "educate" you otherwise?

How exactly did you get educated and how can I achieve this education?

 

[Anton]

At this point, I think the common expression is:

Trollololololololol.


My 'ignore list' seem to increase every week...

Some people need to grow up

 

[westside]

Cross and Lindsey (The Physics and Technology of Tennis) applied steady tension on the poly string and found that strings maintained their energy, resiliency and elasticity even after experiencing tension loss.

“We found that the energy loss was not zero, but close enough to zero to make no significant difference in the calculations.”

I love this book. But they applied a steady tension to the string which doesn't represent the repetitive impacts that simulate contact between ball and string.

Most materials react quite differently according to how stress is applied, as well as the frequency and amount of pressure. Perfect example is the D3O material that if hit with a sudden shock it stiffens, where it is quite pliable with finger or pushing slowly - I remember from the point of sale display Head sent out where kids were fascinated.

All I know is that poly only has a certain life span where it performs at it's optimum playability level (esp. Alu Power), and then stretches and plays differently at some point. I know when my poly goes dead it becomes very springy and I really don't like it.

 

[Anton]

I love this book. But they applied a steady tension to the string which doesn't represent the repetitive impacts that simulate contact between ball and string.

Most materials react quite differently according to how stress is applied, as well as the frequency and amount of pressure. Perfect example is the D3O material that if hit with a sudden shock it stiffens, where it is quite pliable with finger or pushing slowly - I remember from the point of sale display Head sent out where kids were fascinated.

All I know is that poly only has a certain life span where it performs at it's optimum playability level (esp. Alu Power), and then stretches and plays differently at some point. I know when my poly goes dead it becomes very springy and I really don't like it.

Can you rule out that this "playing differently" is not due to simple tension loss? Did you for example try to string your racket at 20lbs less then what you usually string it at?

You describe "dead" as springy - but if energy, resiliency and elasticity or some sort of springy property is lost then why would your stringbed feel more springy? Seems more fitting explanation would be that you are experiencing looser stringbed due to tension loss.