*** Stringlab 2-project ***

Discussion in 'Badminton Stringing Techniques & Tools' started by stringtechno, Jan 7, 2014.

  1. stringtechno

    stringtechno Regular Member

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    Hi guys ,

    The First Stringlab systems are shipped and already in use.
    Our tournement stringer already sent in his first results after a tournement in the weekend.

    It is the intention to share the test results with as many stringers and players as possible. Therefore we will send the test results in pdf and Excel to all those who are interested.
    With the Excel you have the possiblity to sort all the data as you like.

    If you are interested in receiving the testresults please send an email to Stringway.fred@gmail.com
    Of course we want to discus the test results in this thread.
     
  2. stringtechno

    stringtechno Regular Member

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    Advantage of having a test system

    The advantage for the customer:
    - The player does not feel the stringing tension in his racquet he feels the string bed stiffness (SBS). The playability of the stringbed depends on the sbs (and the string)
    - So if the stringer can show the sbs the player knows what he gets. If he tells the tension it does not mean anything as shown above.
    - The player can also go back to the shop and ask to test the sbs again after using the string so that he knows how much sbs is lost. In this way he finds out which string looses more and which one looses less tension during play.
    - In this way the player finds out a relation between sbs and playability.

    The advantage for your shop.
    When players find out that they can have their string bed tested they will certainly not go to a shop which can not offer that service.
    A strong slogan to use is: “Come to our shop and have your stringbed (playability) tested…without cost”.
    - In our opinion a craftsman without a control tool is no craftsman .
    So a top stringer makes a much better impression if he can check his product.

    - With the sbs tester a stringer has the possibility to check the quality of himself and the functions of his stringing machine. If the sbs’s are too low there is something wrong with the skills of the stringer or with his machine.
     
  3. dbswansea

    dbswansea Regular Member

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    what is this?
     
  4. stringtechno

    stringtechno Regular Member

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  5. stringtechno

    stringtechno Regular Member

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    For your information.
    The first stringing results are coming in from Dutch badminton stringers and the following issue comes up.
    The stringer who strung those racquet on a very nice electronic machine improved his results quite a lot. The difference in stiffness is much lower than in the table were it goes from 16 to 28 kg/cm.

    pctn.jpg
    As you might remember from the other discussion we classify strings based on their elongation figures. The table shows these figures for some badminton strings.

    6rgn.jpg
    Important figures are the elastic and remaining elongation and the total elongation because that is what we base the classification on.
    The stringer improved his results so much by switching down from speed 3 to speed 1 on his machine.
    The results became so much better because the strings had more time to develop all the elongation that belongs to the used stringing tension for each string.

    This brings up an important other fact of strings, we have fast strings and slow strings.
    In fast strings the elongation is developed quite quick so these strings can be clamped quickly without losing tension.

    There is much more friction in slow strings and therefore it takes much longer before all the elongation is developed and the stringer has to wait longer before clamping his string.
    There is no relation between the amount of elongation and the speed of stretching, but in general counts, that a stiffer string will be a faster than a string which stretches more.
    A stringer can notice the speed of the string when he watches his tensioner, during pulling. When an electronic tensioner repulls more often or when the lever of a drop weight machine keeps dropping longer, it means that the string that is used is a slower string.
    There Is no negative effect on the sbs when fast strings are strung faster, but in general counts that a fast stringer is a softer stringer.
     
  6. stringtechno

    stringtechno Regular Member

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    Test list / first results

    Hi guys,
    We received the first test results of badminton racquets tested after stringing with the Stringlab 2
    You can download the excel file here so that you can do your own sorting with it.
    IF you have remarks or questions just let me know.

    http://www.stringway-nl.com/pdf/STRINGLAB 2 testlist ENG .xlsx
     
  7. stringtechno

    stringtechno Regular Member

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  8. stringtechno

    stringtechno Regular Member

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    Some Project news

    Hereby some more project news.

    This project could tell more about people than about stringing-technical matters. It looks like a lot of stringers are quietly “standing behind a tree” and are peeping at what is going to happen.

    One of the interested persons send me this line:
    I would like to participate in the project & give my inputs to the (R)evolution of badminton stringing.

    The badminton world in the Netherlands is already shaking a little because we are able to write articles on the official site of the Dutch Badminton ass.
    In the last article we showed that “stringing on stiffness” is already quite old. The pictures show stiffness tester from the 1980’s.

    http://www.stringway-nl.com/pdf/Clear deel 3.pdf

    One of the project guys went to a tournament with the Stringlab to offer the players the service of testing their string bed.
    One person was quite unhappy that day ……………………the tournament stringer. He must have thought that he was quite a good stringer but he may have his doubts now.
    He strung at quite high tensions and his maximum SBS was 16 kg/cm, while badminton string beds must be 20 to 30 kg/cm.
    There are quite a lot of things that cause loss of tension resulting in soft stringbeds, the next message tells about stringing accurately.

    So we think that stringing on stiffness and testing the stringing product will certainly get more and more followers.

    If anyone is interested in writing or publishing about this item ofcourse he can get all the info we have.

    Any comments are appreciated of course.
     
  9. stringtechno

    stringtechno Regular Member

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    Stringing accurately.

    About the stringer from the message above who was such a soft stringer.
    Stringing accurately is actually about losing as little tension as possible, these are a number of things to watch when you want to be an accurate stringer:
    * Take care to pull all the elongation out of the string, do not clamp too fast.

    * Do not pull tension on more than one string at the time.

    * Straighten the cross strings while the tension unit is pulling (CP).

    * Check with every new job if the string does not slip through the clamps. Hold the string behind the clamp and feel if it slides through the clamp while the tension system releases the string.

    * Do not use strings with too much remaining elongation.

    * Lock out machines loose considerably more tension than constant pull machines, the pictures show the generated tension on a lock out and, a CP drop weight and a high end electronic machine at 30 kg.

    lockoutnylonskl.jpg

    autdropelecklm.jpg
    It could be that a lot of badminton stringers string at very high tensions to compensate their loss of tension that is caused by their lack of skill or quality of their machine.

    Because the string is actually tensioned at these high tension the load on it is still very high and the playability could be damaged.

    A very skilled “SBS-stringer” can obtain about the SBS that he wants and do that with the lowest possible tension on his machine.

     
  10. stringtechno

    stringtechno Regular Member

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    Next step for Stringlab 2?

    About 30 badminton stringers have participated in the Stringlab project. We have received many test results of strung racquets so the relation between stringing tension and Stringbed stiffness is obvious.

    The Stringlab may have made the next step in the badminton world yesterday.

    The system was launched on the stringing instruction organized by Yonex on the Dutch Open Championships.

    The respond from Yonex people and from stringers was very positive. The English stringing instructor wanted to buy one straightaway.

    The Yonex people will attend the symposium on 10/25 about stringing on stiffness and tuning shaft stiffness and string bed for different types of players.
     

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