HigherDefine „better“. Do you mean it pings higher?
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HigherDefine „better“. Do you mean it pings higher?
25 lbs on NF800 using the method 24 lbs on mains and 26 lbs on crosses.I am sharing below video on how Mark Lawrence string the racket. Enjoy the video!
I go by feeling only and actually have never measured the real value. I just measured in on an Adidas A2 that I'll be stringing later today and ended up with a value of somewhere around ~1.5 mm. So it seems as if the visual impression was bigger that it actually is. Also, let's put this 1-2 mm in the right perspective. The head of that A2 measures a total length of ~250 mm. So even 2 mm stretch is less than 1% of the total length which is basically nothing for a flexible material like carbon fibre. I'm sure the head deforms significantly more during an actual stroke.read this before and always thought it is more of an exaggeration. Did you actually measure how much you stretch the frame or is this more a feeling?
The gap is created because of the frame being pulled deeper into the load spreader at 12 o'clock. Check it out on your machine, you will see the 6 o'clock support becoming loose once you've pulled the first two mains (and the tension is still on the string after pulling the second main!). A thing I really don't like at any phase of a string job is any sort of play between the frame and the supports. Cause to actually give some support, there has to be contact.This also puzzles me. The rackethead is stretched 2-3 mm but still the 6 o´clock support comes loose?
25 lbs on NF800 using the method 24 lbs on mains and 26 lbs on crosses.
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I did hear Mark Lawrence say the top is the most weakest, I believe he didn't mean that i think it was more to the point of weakest referring to most prone place to break if a collision occurs. I am sure Tim and Mark agree that the bottom of the frame is the weakest that is why we go bottom up. That video looks like a one take deal giving his thoughts as he strings a racket, no script, first thoughts, I am sure that came out wrong ad he spoke. As for all the other stuff I am not sure I haven't worked with a Yonex stringer in 8 years.Funny that Mark is doing it different than Tim Willis. So which one is the official Yonex instruction?
Example: Request is 26 lbs.
- Mark: 25/27 2PBU with last 5 crosses same as mains (25).
- Tim: 26/28,6 2PBU with last 5 crosses same as mains (26). He even goes to rounding up if your machine only does single pounds. That makes it 26/29
My biggest question was always: Why going bottom up or top down? It evidently had to do with the strenght of the frame and some say also the building up of tension upwards or downwards plays a factor. In the recent Zoom call with Paul Stewart Tim said the bottom part of the frame is weakest, therefore going bottom up. Now Mark says the upper part of the frame is the weakest and that's the reason why for the last 5 crosses they drop tension equal to mains.
I'm getting a bit confused here. Arguably two of the most experienced and knowledgable stringers, both from the same Yonex stringing team nonetheless, are saying opposite things and stringing differently.
The reason why Yonex goes bottom up, in 2005 a stringer at the World Championships was stringing top down. A Korean player requested a tension of 34 and stringing those rackets he broke 3 in a row. He wad then told to go bottom up and no problem. I believe that is when Yonex required all badminton rackets go bottom up. I also heard there was a problem at the 2005 All England's, but I was not there.Funny that Mark is doing it different than Tim Willis. So which one is the official Yonex instruction?
Example: Request is 26 lbs.
- Mark: 25/27 2PBU with last 5 crosses same as mains (25).
- Tim: 26/28,6 2PBU with last 5 crosses same as mains (26). He even goes to rounding up if your machine only does single pounds. That makes it 26/29
My biggest question was always: Why going bottom up or top down? It evidently had to do with the strenght of the frame and some say also the building up of tension upwards or downwards plays a factor. In the recent Zoom call with Paul Stewart Tim said the bottom part of the frame is weakest, therefore going bottom up. Now Mark says the upper part of the frame is the weakest and that's the reason why for the last 5 crosses they drop tension equal to mains.
I'm getting a bit confused here. Arguably two of the most experienced and knowledgable stringers, both from the same Yonex stringing team nonetheless, are saying opposite things and stringing differently.
I heard nearly the same story from a stringer who strung at sudirman cup at the same time around. EDIT: It was Sudirman Cup in 2003The reason why Yonex goes bottom up, in 2005 a stringer at the World Championships was stringing top down. A Korean player requested a tension of 34 and stringing those rackets he broke 3 in a row. He wad then told to go bottom up and no problem. I believe that is when Yonex required all badminton rackets go bottom up. I also heard there was a problem at the 2005 All England's, but I was not there.
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The shape over time x. I made the experience that the shape right off the machine, settled string after 3 days and first 2-3 sessions is not always the same. Since the mains are longer the have the potential to loose more tension. IMO a shape over some time is better than a one moment measurment.What else would you like to see from this experiment?
For no. 7, try main 28lbs(constant pull), cross 28lbs( 10% PS pull).I always did 12.2kg / 12.8 kg with 6 oclock adjustment before, but measured it the other day (couple months old string) and it was about 0.5 mm longer and 1.5mm less wide than an unstrung racket I have.
Some of these theories seem conflicting so there is only one answer: LETS SCIENCE THE **** OUT OF IT!
So, I will be conducting an experiment, and I would like you guys' input so to have the most useful result.
What I want to find out: how do these affect the shape of a racket:
- I did not hear or see the yonex guys adjust the 6 o clock support after the first main, but a lot here do it. What does it do for the shape of the racket?
- 10% cross but not the top 5 crosses
- ...?
I have 4 ax99's available to string. One is strung but is nearly breaking already.
Method:
I will be measuring with a 300mm caliper, the length of the racket in the middle of the mains, and the width at three points (as to also see the 5 cross influence). At three moments: before stringing, right after stringing, after 48 hours.
Perhaps I should also play them, and see which feels better.
All rackets will be strung with GT5 mains and 62Fire crosses.
I think I need to do at least the following test cases:
Obviously the 28/31 will be tighter, so this will be purely focused on the shape.
- Square 28 (the control)
- Square 28 with 6 oclock adjustment
- 28/31 with last 5 crosses 28
- Still available
What else would you like to see from this experiment?
Thoughts:
I'm not breaking a lof of crosses, but the reverse top 3 crosses seem intersting.
Results may depend on the machine supports. I will be using my Superstringer T20 with Chudek supports. Which I would say is a decently sturdy dropweight machine for these margins, but an electronic one would perhaps be more accurate. I couldn't happen to borrow yours, s_mair?
Also, why is a load spreader only used at the top? Surely at the bottom would also help prevent damage, at least at high tensions?
Probably make a little video about it? But I'm not sure it will add anything besides the results posted here. It may be people find it more easily.
I have a right after and a 48 hours measurement planned, as already in the post. A 96 hour could be added.The shape over time x. I made the experience that the shape right off the machine, settled string after 3 days and first 2-3 sessions is not always the same. Since the mains are longer the have the potential to loose more tension. IMO a shape over some time is better than a one moment measurment.
For no. 7, try main 28lbs(constant pull), cross 28lbs( 10% PS pull).
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AK String Pattern hope you like
Sorry no master here only a master debator minus the de. Arigato for the thought but a master knows everything, I am still learning so how you like dem apples.@kakinami is for me a master stringer. Alan, hopefully I get the chance once in my life to get a stringing job from you!![]()
For when I tie off now I use knot function, in Japan I am not stringing more than 30 mostly 18-26 rarely I see 30. Probably if I was stringing above 33 I might just add 2 pounds for my knot. I believe Yonex USA is the same way with warranty knot placement has to be in Yonex warranty spot, but in US most people string over recommend tensions. Pulling last 2 individually, 1: it helps me do my pattern my clamps are on top out of my way so I can do my first 2 crosses. 2: I don't think I am stringing at high tensions, so having full tension in all my mains is what I am used to, no problems on my end so if it ain't broke, then don't bother fixin' it.Sorry Alan, I think you must accept that you are a master stringerAlso a master can learn something!
The tie offs of the mains on B9 are very neat, also the tie off of the cross on B8. Looks very very tidy.
But here in Germany you lose the warranty for Yonex rackets if you not string as they suggest in their stringing instructions. And if you send them unstrung frames, they normally refuse it, if you don't have good connections. Other manufacturers are more accommodating. So I try to string every frame the same.
Do you always use the knot function on the last main? Or only up to a certain weight?
I personally don't like to pull the last two mains separately. I've seen a lot of frames (only Yonex Nano* and some fake rackets) where the string is sunken into the frame (as you also posted in Facebook -> Link). All these frames have been strung by someone else. It never happened to me, but had to deal to string the broken racket anyway.
I took some pictures of one and how I "fixed" it:
View attachment 196406 View attachment 196407 View attachment 196408
It was a leather pad (from Tennis). The racket lasted another year and two restrings.
Humbleness is the sign of a real master.Sorry no master here only a master debator minus the de. Arigato for the thought but a master knows everything, I am still learning so how you like dem apples.
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