In praise of Kevlar/ZX hybrid!!!

skydog

Semi-Pro
The common misconception of Kevlar is that if it so much stiffer than other strings, it must be bad for your arm health as it must transmit more vibration into your racquet.

What most folks forget is that DuPont designed Kevlar to be a shock absorber. It was designed to be used in bulletproof vests and car bumpers to absorb extreme shock and energy and disperse it before reaching something more valuable such as human flesh. Kevlar tennis string is essentially a rope made up of Kevlar fibers, similar to the way a multi fiber tennis string is made up of multiple nylon fibers versus a syngut composed of a larger nylon core. Kevlar tennis string is the least stiffest string as it comes off the reel, it flexes easily and does not have any coil memory almost to the point to where it can be difficult to string. If you read the thread, some folks recommend Super glueing the tips to help get it through the holes as you need a bit more stiffness when stringing.

So why the bad rep for Kevlar strings? Locked string beds. When you cross Kevlar with syngut or another cross that Kevlar will notch, the locked bed prevents the strings from moving and absorbing energy so it gets transmitted to the racquet and then to your arm.

This is the beauty of the ZX as a cross, ZX will notch the Kevlar and resists being notched by the Kevlar. Even when notched, the Kevlar mains continue to move freely allowing them to continue to absorb shock and energy dissipating the amount of shock and energy that reaches the frame and your arm.

I use the Kevlar/ZX hybrid to get the spin potential of a Poly in a more arm friendly set up. By adjusting the tensions, I can control power and feel of the stringbed. More power? Lower the ZX tension. Stiffer feel? Increase the Kevlar tension. After experimenting with this hybrid for several years, I have no desire to ever string another Poly into one of my racquets.
 

skydog

Semi-Pro
You guys are brutal sometimes...I've been lurking a bit, here I am to help answer some questions... :)
And we might be doing a full review on Crossfire ZX...

I stand by what I said in the podcast, the string bed definitely softens up (as some of you have also mentioned) and I have a feeling if someone handed it to you, you would not know Kevlar was in there. We filmed a fun RF97 video last week and I had it in one of my racquets and handed it to Boonie and he had no idea it was Crossfire ZX and enjoyed it as well. Definitely feels more lively than Hyper G at 57 lbs, especially after that 10 hour mark. It also pockets the ball better too, in my opinion. Remember though, I am not the player in search of "feel" or "spin" so your milage may vary!

What else can I tell you?
Don't think we pre-stretched!
Would it be good at a lower tension, sure -- give it a go!
Would I want to try it at a higher tension -- of course! As we mentioned, the stringer was very wary when stringing...after 30+ years of this sport, I still like high tension strings, so maybe with the next string job I can get it up a few more pounds! Did it feel tight off the stringer, yes. Did it play as tight as it felt, no, not in my opinion.
Definitely would be down to try the kevlar hybrid with another poly or alternate option as well.

Ask away, I'll do my best to answer!
Michelle, TW
Appreciate the feedback!

I would love to see a full Crossfire ZX review. When is that RF97 video with you and Boonie coming out?
 

Shroud

G.O.A.T.
The common misconception of Kevlar is that if it so much stiffer than other strings, it must be bad for your arm health as it must transmit more vibration into your racquet.

What most folks forget is that DuPont designed Kevlar to be a shock absorber. It was designed to be used in bulletproof vests and car bumpers to absorb extreme shock and energy and disperse it before reaching something more valuable such as human flesh. Kevlar tennis string is essentially a rope made up of Kevlar fibers, similar to the way a multi fiber tennis string is made up of multiple nylon fibers versus a syngut composed of a larger nylon core. Kevlar tennis string is the least stiffest string as it comes off the reel, it flexes easily and does not have any coil memory almost to the point to where it can be difficult to string. If you read the thread, some folks recommend Super glueing the tips to help get it through the holes as you need a bit more stiffness when stringing.

So why the bad rep for Kevlar strings? Locked string beds. When you cross Kevlar with syngut or another cross that Kevlar will notch, the locked bed prevents the strings from moving and absorbing energy so it gets transmitted to the racquet and then to your arm.

This is the beauty of the ZX as a cross, ZX will notch the Kevlar and resists being notched by the Kevlar. Even when notched, the Kevlar mains continue to move freely allowing them to continue to absorb shock and energy dissipating the amount of shock and energy that reaches the frame and your arm.

I use the Kevlar/ZX hybrid to get the spin potential of a Poly in a more arm friendly set up. By adjusting the tensions, I can control power and feel of the stringbed. More power? Lower the ZX tension. Stiffer feel? Increase the Kevlar tension. After experimenting with this hybrid for several years, I have no desire to ever string another Poly into one of my racquets.
This is a good description. Sadly most players have only experienced kevlar with syngut in a locked stringbed. You got it right about the locked part...its also why polys can destroy arms and do when the strings are notched.

Said another way, kev/poly is more armfriendly than kev/syngut. And yep its even more friendly with kev/zx.
 

USPTARF97

Hall of Fame
Have experienced Kevlar/Zx at low tension and can tell you that Gut/poly is superior in every way you can possibly think of other than durability. Arm friendliness, power, spin, feel, etc.
Pushing Kev/Zx as some arm friendly hybrid is like trying to highlight the least significant attribute of that setup.
 

USPTARF97

Hall of Fame
It would be like describing a Ferrari and trying to highlight how good of gas mileage it gets. Makes no sense.
Anything in the mains with Zx crosses would be softer than Kevlar mains. Better description of Kev/Zx would be its on the high end in terms of stiffness but not as bad as one might anticipate.
At 48lbs it is more stiff than any number of poly strings I have tried including Tourbite, 4g, Alu Power, Head Lynx Tour, Technifibre Black Code, RPM Blast, Kirschbaum Max Power and the list goes on. The playability is pitiful in comparison to any of these as well.
If one is looking for an arm friendly set up, Kev/Zx isn’t it.
Be honest.
 
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TypeRx

Semi-Pro
Have experienced Kevlar/Zx at low tension and can tell you that Gut/poly is superior in every way you can possibly think of other than durability. Arm friendliness, power, spin, feel, etc.
Pushing Kev/Zx as some arm friendly hybrid is like trying to highlight the least significant attribute of that setup.
Based on MY experience with Gut/poly, spin and durability are noticeably lower than the Kev/ZXP. Agree on power and absolutely on feel (the biggest drawback of Kev/ZXP). But then again, I generally like a very muted stringbed.

For my arm, I can absolutely feel shock with (and therefore avoid) full-bed poly as well as stiff rackets (say anything 66 RA and higher). Kev/ZXP, once settled (1-2 hours of hitting) to me is oh-so soft, has great spin potential, and helps generate controllable power. YMMV, and that's fine.

I've used quite a few different mains (all poly) with ZXP crosses, and none is perceivably "softer" than Kev/ZXP, but I do agree that ZXP crosses can help improve the comfort of any harsh main. Problem is that you will only get a couple hours (if even) out of this setup as the ZXP saws through the poly faster than any other cross.

Now, back on topic:

What most folks forget is that DuPont designed Kevlar to be a shock absorber. It was designed to be used in bulletproof vests and car bumpers to absorb extreme shock and energy and disperse it before reaching something more valuable such as human flesh. Kevlar tennis string is essentially a rope made up of Kevlar fibers, similar to the way a multi fiber tennis string is made up of multiple nylon fibers versus a syngut composed of a larger nylon core.
I've said it before (maybe in this thread?!) that there is something magical about the "multifilament" braided Kevlar string. While it can resist deflection very well, it appears to distribute force very efficiently through the length of its braided fibers. It's great. Note, I have NEVER tried the Kevlar+ string from Ashaway (in the Crossfire pack) or other brands of aramid-based strings, so I don't know if this property is applicable to others.
 

Shroud

G.O.A.T.
Based on MY experience with Gut/poly, spin and durability are noticeably lower than the Kev/ZXP. Agree on power and absolutely on feel (the biggest drawback of Kev/ZXP). But then again, I generally like a very muted stringbed.

For my arm, I can absolutely feel shock with (and therefore avoid) full-bed poly as well as stiff rackets (say anything 66 RA and higher). Kev/ZXP, once settled (1-2 hours of hitting) to me is oh-so soft, has great spin potential, and helps generate controllable power. YMMV, and that's fine.

I've used quite a few different mains (all poly) with ZXP crosses, and none is perceivably "softer" than Kev/ZXP, but I do agree that ZXP crosses can help improve the comfort of any harsh main. Problem is that you will only get a couple hours (if even) out of this setup as the ZXP saws through the poly faster than any other cross.

Now, back on topic:



I've said it before (maybe in this thread?!) that there is something magical about the "multifilament" braided Kevlar string. While it can resist deflection very well, it appears to distribute force very efficiently through the length of its braided fibers. It's great. Note, I have NEVER tried the Kevlar+ string from Ashaway (in the Crossfire pack) or other brands of aramid-based strings, so I don't know if this property is applicable to others.
Its very plush especially if you do the differential travlerajam recommends. There are several reasons for this. If you do it at normal tensions it would be stiffer. So something like 50/50 will be harder on the arm than it will be at say 60/40.

Its a good point about the 1st hour or so. Its fundamentally different after that.

There have been reports on this forum about poly hurting arms but being ok with kevlar. One guy had ATP points and said alu power would hurt his wrist but not kevlar. Here is his thread though he was using kev/ syngut:


I find it awesome that booney had no clue it was kevlar which shows how friendly the combo can be. It was too soft for me btw which is why I use kev/4g these days.

If its kevlar I have probably tried it. Outside of Pros Pro and Vortex I think I have used all the others. Ashaways kevlar is the best and is in between the 400- 900 stiffness rating I have seen for kevlar. Ashaway is in the 700s. Kevlar+ is pretty unanimously not as good as the normal.
 

Shroud

G.O.A.T.
I don't think anyone disagrees with that. You've just learned what a strawman argument is.
Ok, I disagree with the every imaginable way part. Get way more control with kev than gut/poly. But sure, probably agree with the rest. BTW gut/zx is killer if you like a soft stringbed and don't break strings.
 

USPTARF97

Hall of Fame
Let me tell you something. You're probably a great guy IRL, but here you come across as an insufferable PIA.
This is about as confrontational as it gets on this forum, entering into a discussion about this string setup when you have no experience with Kev/Zx or Kevlar. You simply wanted to enter into an argument for the sake of insult and confrontation.
 

USPTARF97

Hall of Fame
Not really. I still think you're a good guy who really hates Kevlar :cool:
I don’t hate it and have used it quite a bit. Just think it is being pushed by a few people here as one of the more arm friendly setups and that is far from the truth. The greatest asset would be durability and out of fairness players should know what they are getting.
Playing with this setup caused more pain in my arm than I have had in 5-6hrs. Not exactly a glass arm as Shroud describes. Play 5.0 tennis with a Prestige Mid 360+ 93” with full poly.
 
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Shroud

G.O.A.T.
What are other Kevlar poly combos that are good? That lasts a long time, zx is too easy to break when over 50lbs
Kev/ mosquitobite and kev/4g are fantastic especially if you need to go over 50lbs. Good luck breaking kev/4g anytime soon

Though zx is super durable but that depends on your stringing technique. If you have the guy in the proshop string it good luck.
 

skydog

Semi-Pro
Though zx is super durable but that depends on your stringing technique. If you have the guy in the proshop string it good luck.
This.

If you are not going to take the time to string ZX yourself, chances are the average proshop stringer is not going to take the time it needs to be done correctly. One of my clubs professionals is also the stringer and we talk strings and stringing quite a bit. I have loaned him racquets to try with the Kevlar/ZX hybrid and he wanted to try it on one of his racquets so I cut some Kevlar and ZX off my reels for him to try out. When I went through the process I use to string the ZX, he kind of looked at me weird and asked how long that took. When I told him 40 to 45 seconds of pulling per cross, I knew he was not going to do it or alternatively do a manual prestretching. As a result, after a couple of hours of hitting the string bed had loosened up to the point of being too powerful/uncontrollable.

Once you get used to stringing ZX, it becomes second nature. I have had 3 ZX string breaks in 3 years since switching to this hybrid. Two were at the beginning, one was due to a nick in the ZX that occurred in the stringing process and the other was over pulling when tying off a knot. The third was due to a sharp edged grommet which eventually rubbed the ZX to the point of breaking. I have done durability tests on a couple of racquets exceeding 75 hours of play on both of them when I stopped counting the time played. The weakest link is the Kevlar, it eventually loses its snap back ability after being severely notched by the ZX.
 

USPTARF97

Hall of Fame
This.

If you are not going to take the time to string ZX yourself, chances are the average proshop stringer is not going to take the time it needs to be done correctly. One of my clubs professionals is also the stringer and we talk strings and stringing quite a bit. I have loaned him racquets to try with the Kevlar/ZX hybrid and he wanted to try it on one of his racquets so I cut some Kevlar and ZX off my reels for him to try out. When I went through the process I use to string the ZX, he kind of looked at me weird and asked how long that took. When I told him 40 to 45 seconds of pulling per cross, I knew he was not going to do it or alternatively do a manual prestretching. As a result, after a couple of hours of hitting the string bed had loosened up to the point of being too powerful/uncontrollable.

Once you get used to stringing ZX, it becomes second nature. I have had 3 ZX string breaks in 3 years since switching to this hybrid. Two were at the beginning, one was due to a nick in the ZX that occurred in the stringing process and the other was over pulling when tying off a knot. The third was due to a sharp edged grommet which eventually rubbed the ZX to the point of breaking. I have done durability tests on a couple of racquets exceeding 75 hours of play on both of them when I stopped counting the time played. The weakest link is the Kevlar, it eventually loses its snap back ability after being severely notched by the ZX.
This provides a unique problem with using Kevlar/Zx for players. Apparently it is an entire science project to string it correctly, extensive stretching, or there are playability problems and the Zx could possibly break prematurely. Durability once strung but complete fragility on the stringer. Too much trouble.
Kevlar/Zx has major liabilities that out weigh the assets. You guys can Praise on but some of the guys who initially created this thread don’t even play with this set up anymore. Should tell you something.
 
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USPTARF97

Hall of Fame
If I were interested in a string, would want to know the good and the bad. Applies to jobs, women, investments, cars, houses, schools, neighborhoods, health clubs, tennis clubs etc.
For instance, every time we see a new poly out, on this forum we ask Jolly if he has tried it and what is the good, bad and ugly. It’s like you guys can only stand to hear the positive.
Praise on.
 
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TypeRx

Semi-Pro
This.

If you are not going to take the time to string ZX yourself, chances are the average proshop stringer is not going to take the time it needs to be done correctly. One of my clubs professionals is also the stringer and we talk strings and stringing quite a bit. I have loaned him racquets to try with the Kevlar/ZX hybrid and he wanted to try it on one of his racquets so I cut some Kevlar and ZX off my reels for him to try out. When I went through the process I use to string the ZX, he kind of looked at me weird and asked how long that took. When I told him 40 to 45 seconds of pulling per cross, I knew he was not going to do it or alternatively do a manual prestretching. As a result, after a couple of hours of hitting the string bed had loosened up to the point of being too powerful/uncontrollable.

Once you get used to stringing ZX, it becomes second nature.
FYI - I have done maybe 50 (?) string jobs now with ZXP (in full bed, Kev/ZXP, and Poly/ZXP) and have found that after a thorough pre-stretch, it takes me no more time to tension the string than with poly/multi/NG. And I use a cheap Gamma X2 dropweight stringer. Literally, after I adjust the gear and get the bar level, it doesn't drop any further. I can clamp and move on. ZXP not pre-stretched at all or not thoroughly pre-stretched takes longer to string because the dropweight gradually falls. I just strung one of my rackets earlier today after playing 3+ sets and Kev/ZXP took me 36 minutes to string. Pre-stretch both Kev and ZXP took me 4 minutes. I am definitely fast at everything now but even when I was slow pre-stretching was at most a 10 minute process and stringing was 45-50 minutes. Stringing poly takes me longer because of the the nuisance coil effect. The only string I can do quicker than Kev/ZXP is syn gut, mainly because weaving the crosses is so smooth with fresh OGSM.

This provides a unique problem with using Kevlar/Zx for players. Apparently it is an entire science project to string it correctly, extensive stretching, or there are playability problems and the Zx could possibly break prematurely. Durability once strung but complete fragility on the stringer. Too much trouble.
Kevlar/Zx has major liabilities that out weigh the assets. You guys can Praise on but some of the guys who initially created this thread don’t even play with this set up anymore. Should tell you something.
Nope, not at all. Some of us just like to understand things a bit more and are willing to experiment until we find an optimal method.

We get it, this setup doesn't work for you. IIRC, you have used Kev/ZX ONCE and didn't like it. Not to mention it was only for a couple hours at that. That's fine. Your arm is sensitive to this setup. Guess what, I used the RF97A and had to sell because it was too harsh for me -- and I tried several different string setups before letting it go. I'm glad you shared your experience and encourage everyone else that tries the string to share their experience. It won't be optimal for everyone, that is for sure! This is why we all have so many different strings to choose from (not to mention rackets, overgrips, shoes, shorts, etc.).

If I were interested in a string, would want to know the good and the bad. Applies to jobs, women, investments, cars, houses, schools, neighborhoods, health clubs, tennis clubs etc.
For instance, every time we see a new poly out, on this forum we ask Jolly if he has tried it and what is the good, bad and ugly. It’s like you guys can only stand to hear the positive.
Praise on.
I (and others) have mentioned many times the potential downsides of Kev/ZXP. Not my fault if you lack the ability to read and acknowledge it. Literally all you do is come in here and continue to try and derail the thread, attack others on here, or go off-topic in some other way. Please read the thread title again.
 
How long are most people getting out of their Kevlar setups. I have only played Kevlar with synthetic gut. Right now I get around 20 hours. When I was playing a lot and with great players closer to 10 hours. I personally don't like poly and in the past have broken it from anywhere from 40 mins to 3 hours and it has given me tennis elbow and some wrist pain. Should a Kevlar with poly last longer and what benefits should I see.
 

skydog

Semi-Pro
FYI - I have done maybe 50 (?) string jobs now with ZXP (in full bed, Kev/ZXP, and Poly/ZXP) and have found that after a thorough pre-stretch, it takes me no more time to tension the string than with poly/multi/NG. And I use a cheap Gamma X2 dropweight stringer. Literally, after I adjust the gear and get the bar level, it doesn't drop any further. I can clamp and move on. ZXP not pre-stretched at all or not thoroughly pre-stretched takes longer to string because the dropweight gradually falls. I just strung one of my rackets earlier today after playing 3+ sets and Kev/ZXP took me 36 minutes to string. Pre-stretch both Kev and ZXP took me 4 minutes. I am definitely fast at everything now but even when I was slow pre-stretching was at most a 10 minute process and stringing was 45-50 minutes. Stringing poly takes me longer because of the the nuisance coil effect. The only string I can do quicker than Kev/ZXP is syn gut, mainly because weaving the crosses is so smooth with fresh OGSM.
I use a wise 2086 head with presstretch and just let the tension head settle instead of the manual prestretch. It takes about 40 to 45 seconds for the tension to settle, but it gives the same results. As I only string for myself, I do not mind the extra time required. I just hang out upstairs with the cats and Sirius XM Hair Nation while I string my racquets. As I get great durability, I am only stringin* my racquets once or twice a year max (4 racquets in the bag). I only need 15 feet of ZX to string the crosses in my Prince Tour 98 ESP (16 x 16 pattern).

If I was looking for faster stringing times, I would manually prestretch to reduce stringing time.
 

graycrait

Hall of Fame
How long are most people getting out of their Kevlar setups.
When I was stringing this for a young D1 lady who had been the Russian junior champ in her 100" 16x18 rackets she got about 2 weeks during tennis season playing with it, hitting with folks and practice. Tour Bite 16L (string school furnished) lasted her 1.5hrs. Today my racket of choice is Head Radical Tour OS 18x19 12oz and it lasts this 65 yr old months.
 

USPTARF97

Hall of Fame
FYI - I have done maybe 50 (?) string jobs now with ZXP (in full bed, Kev/ZXP, and Poly/ZXP) and have found that after a thorough pre-stretch, it takes me no more time to tension the string than with poly/multi/NG. And I use a cheap Gamma X2 dropweight stringer. Literally, after I adjust the gear and get the bar level, it doesn't drop any further. I can clamp and move on. ZXP not pre-stretched at all or not thoroughly pre-stretched takes longer to string because the dropweight gradually falls. I just strung one of my rackets earlier today after playing 3+ sets and Kev/ZXP took me 36 minutes to string. Pre-stretch both Kev and ZXP took me 4 minutes. I am definitely fast at everything now but even when I was slow pre-stretching was at most a 10 minute process and stringing was 45-50 minutes. Stringing poly takes me longer because of the the nuisance coil effect. The only string I can do quicker than Kev/ZXP is syn gut, mainly because weaving the crosses is so smooth with fresh OGSM.



Nope, not at all. Some of us just like to understand things a bit more and are willing to experiment until we find an optimal method.

We get it, this setup doesn't work for you. IIRC, you have used Kev/ZX ONCE and didn't like it. Not to mention it was only for a couple hours at that. That's fine. Your arm is sensitive to this setup. Guess what, I used the RF97A and had to sell because it was too harsh for me -- and I tried several different string setups before letting it go. I'm glad you shared your experience and encourage everyone else that tries the string to share their experience. It won't be optimal for everyone, that is for sure! This is why we all have so many different strings to choose from (not to mention rackets, overgrips, shoes, shorts, etc.).



I (and others) have mentioned many times the potential downsides of Kev/ZXP. Not my fault if you lack the ability to read and acknowledge it. Literally all you do is come in here and continue to try and derail the thread, attack others on here, or go off-topic in some other way. Please read the thread title again.
This is the only extended review of a string set up where people are claiming the exact opposite of what the string actually produces. Makes me think there is a complete lack of understanding or the inability for many of these people to actually make a review of a particular string.
 
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USPTARF97

Hall of Fame
The anti-Kevlar silent majority? :-D

I was trying to not use the ignore button on you, since I save that for covidiots, but I'm definitely tempted now...
Some of the clubs where we work have thousands of members with no one using any sort of Kevlar or Kevlar Hybrid. I have run across one player (4.5) that was using Kevlar in the last 15yrs. Actually more like 25yrs. He is hurt and plays golf now. So yeah, it is definitely the silent majority. Most people don’t care.
This forum thread has pulled together a hand full of people that use it from all over the world.
 
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TypeRx

Semi-Pro
Sorry guys, I didn't mean to feed the troll. Maybe I should hit the ignore button too although that is generally not how I operate.

@USPTARF97 - you have raised some valid points. Thank you, we got it. I will not be responding to your posts from this point forward, but am happy to continue to provide insight (from my experience) to others interested in trying this string setup.
 

2nd Serve Ace

Hall of Fame
What are other Kevlar poly combos that are good? That lasts a long time, zx is too easy to break when over 50lbs
The black and red color of ZX are worthless imho due to fragility.

I only ever use the natural ZX stuff # 16 gauge, but I do give it a 10" pre stretch and can always string it at 50 lbs, no issues.
 

Shroud

G.O.A.T.
If I was a professional stringer I'd be against Kevlar hybrids too, independently of how they play. It's called a conflict of interest.
Not to mention if I was sponsored by another brand of strings.

Edit: see the post below. FWIW Wilson owns Luxilon.
 
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skydog

Semi-Pro
Sorry guys, I didn't mean to feed the troll. Maybe I should hit the ignore button too although that is generally not how I operate.
No worries. I normally do not ignore folks on web boards either, but some folks deserve it. Most folks who disagree with the premise of the thread state their case and disappear, some folks feel the need to fight a battle that does not need to be fought. I let it ride for a while, but when someone poisions the thread continuously with bad information because it it does not meet their personal beliefs, there comes a time to ignore and move on.
 

Shroud

G.O.A.T.
If I was a professional stringer I'd be against Kevlar hybrids too, independently of how they play. It's called a conflict of interest.
me too and if I was on contract with another string manufacturer I would be very bias about the fan club here and start threads about how great Alu Power is. Conflict of interest indeed:

 

USPTARF97

Hall of Fame
On a contract with Head and testing Head strings. Kevlar and Kevlar hybrids are still terribly stiff set ups that stink in terms of playability.
 
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USPTARF97

Hall of Fame
I know, I know... that decides what you use!

You think you can get me a deal on a Gravity Pro? :cool:

Can use whatever I want. Frame in the hand and stencil on the strings is what they care about. Frames are strung with VS Touch/4g, Klip Legend/ BHBZ and Alu Power.
Order a frame from Tennis Warehouse.
 
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TypeRx

Semi-Pro
so I've lost track is the black zx the brittle one

17 natural is too fragile?
No no no! At least not IME. I much prefer the black. I had a mini-reel of natural and that string had a tendency to snap on me during the pre-stretch process. In actual use, the natural and black ZXP strings definitely feel different. I find the natural more stiff and the black more elastic/powerful. Others here feel the natural color feels more like NG than the black. I don't think either feel anything like NG.

Both are "brittle" and should be handled responsibly during the stringing process. After that, enjoy many tens of hours of play!
 

lucieisland

Semi-Pro
for me, the only sure value of use or regularity of use of a string is the capacity for a brand to continue to produce and sell this string! ..

how many strings have been marketed and then suddenly stopped being produced? the only valid reasons are:
a) not enough sales volume to continue producing, since it is unprofitable

b) faulty construction or design of this string, which results in commercial failure

c) a more expensive or more efficient string replaces it.

but anyway, I think, having worked in the world of industry, when a brand continues to produce and sell something, it is not at a loss, therefore, it is that it sells .

by understanding this, it becomes logical that, if ashaway, pro's pro or other brands (I am thinking of ultimate power from toalson, pro blend from prince), continue to produce these strings, it is because it works! ..

pusic in a certain logic, if luxilon stopped producing its Timo, or its ACE, is it because it was bad strings? pa if on ...

on the same logic, does Donnay produce zero rackets? I do not think so. having had 6 xenecore donnay, I can say that it is among the most controlled and most pleasant frames that I have known. but, what is the number of people playing with it? and why?

and worse, no atp or wta player plays with donnay. however, whoever has tried a pro one penta or hexacore knows that the quality is well represented.

aramid / kevlar has been around for how long?

André used it when? in 2010? 2000? 1990? ..

and yetit is a string that still exists. he must have a reason. otherwise, what manufacturer would waste his time making it? to sell it?
 

USPTARF97

Hall of Fame
for me, the only sure value of use or regularity of use of a string is the capacity for a brand to continue to produce and sell this string! ..

how many strings have been marketed and then suddenly stopped being produced? the only valid reasons are:
a) not enough sales volume to continue producing, since it is unprofitable

b) faulty construction or design of this string, which results in commercial failure

c) a more expensive or more efficient string replaces it.

but anyway, I think, having worked in the world of industry, when a brand continues to produce and sell something, it is not at a loss, therefore, it is that it sells .

by understanding this, it becomes logical that, if ashaway, pro's pro or other brands (I am thinking of ultimate power from toalson, pro blend from prince), continue to produce these strings, it is because it works! ..

pusic in a certain logic, if luxilon stopped producing its Timo, or its ACE, is it because it was bad strings? pa if on ...

on the same logic, does Donnay produce zero rackets? I do not think so. having had 6 xenecore donnay, I can say that it is among the most controlled and most pleasant frames that I have known. but, what is the number of people playing with it? and why?

and worse, no atp or wta player plays with donnay. however, whoever has tried a pro one penta or hexacore knows that the quality is well represented.

aramid / kevlar has been around for how long?

André used it when? in 2010? 2000? 1990? ..

and yetit is a string that still exists. he must have a reason. otherwise, what manufacturer would waste his time making it? to sell it?
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