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Thread: Illegal studs

      
  1. #51
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    Default Re: Illegal studs

    I saw a load of those in the game that started this thread... I didn't get a micrometer out but by suspicion is that that edge (around the tip) has a radius smaller than 1mm (which would make them illegal).

  2. #52

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    Default Re: Illegal studs

    Quote Originally Posted by mcroker View Post
    I saw a load of those in the game that started this thread... I didn't get a micrometer out but by suspicion is that that edge (around the tip) has a radius smaller than 1mm (which would make them illegal).
    I do hope you meant 10mm.
    He trudg’d along unknowing what he sought,
    And whistled as he went, for want of thought.
    The Referee by John Dryden

  3. #53
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    Default Re: Illegal studs

    Quote Originally Posted by OB.. View Post
    I do hope you meant 10mm.
    I did not...

    All edges of the studs/cleats should be finished smooth and rounded to a radius of not less than 1mm.
    https://www.worldrugby.org/handbook/regulations/reg-12/schedule-2?lang=en

  4. #54

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    Default Re: Illegal studs

    Quote Originally Posted by mcroker View Post
    I saw a load of those in the game that started this thread... I didn't get a micrometer out but by suspicion is that that edge (around the tip) has a radius smaller than 1mm (which would make them illegal).
    Not necessarily because the manufacturer may have performed tests , and this stud may have performed just as well in the tests as the example rounded stud

    In which case they are legal

    This is the whole problem.. you can't look at a stud and determine that it is illegal.

    You can judge it dangerous, but that is a different , subjective thing
    Last edited by crossref; 14-09-18 at 23:09.

  5. #55
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    Default Re: Illegal studs

    That’s not how I read regulation 12 (schedule 2). I think it says all edges must be rounded.

  6. #56
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    Default Re: Illegal studs

    Ref is sole judge of fact - if she says they illegal then they are.
    Player has two options, change them or a red card.
    Stick to your guns - players may jump up and down and scream and claim they have never cheated in their life but they are still in the wrong.

  7. #57

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    Default Re: Illegal studs

    Quote Originally Posted by mcroker View Post
    That’s not how I read regulation 12 (schedule 2). I think it says all edges must be rounded.
    Read again

    The reference stud has round edges.

    A stud of any shape is legal, as long as it is tested and performs just as well as the reference stud

    .The performance criterion for tests A and B is that the stud/cleat be evaluated should cause no greater damage to the artificial skin than the reference stud/cleat defined in Figure 1 above

  8. #58
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    Default Re: Illegal studs

    I did read again...

    (Paragraph numbers mine)
    (A) Stud/cleat length shall be no greater than 21 mm (see Law 4).
    (B) Studs/cleats complying with the design and dimensions shown in Figure 1 should give satisfactory performance.

    (C) The shape and dimensions of other stud/cleat designs should be such that they present a no greater risk of injury to another player than the stud/cleat shown in figure 1. Tests A and B can be used to assess comparative performance.
    (D) The plan view cross-sectional contact area of the stud/cleat shown in Figure 1 at a plane 2 mm below the tip is 78 mm2. Other studs/cleats having the same or greater contact area might be expected to give satisfactory performance dependent on minimum stud/cleat width in any direction.
    (E) All edges of the studs/cleats should be finished smooth and rounded to a radius of not less than 1mm.
    I concluded that paras (A) and (E) we’re standalone requirements and that ‘no more risk of injury’ was described by B, C and D.
    by which interpretation a stud must be
    <= 21mil long
    have rounded edges
    and pose no greater risk of injury than an stud with a tip-diameter of 10mm

    I accept fully that there may be equally valid alternative interpretations which is why I started the thread.

  9. #59

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    Default Re: Illegal studs

    Quote Originally Posted by Camquin View Post
    Ref is sole judge of fact - if she says they illegal then they are.
    .
    Ref 12 is designed so that it is difficult or even impossible to inspect any stud by eye and tell whether it is illegal .. you need to perform the prescribed tests for that.

    She would be better advised to say that in her opinion a particular stud is dangerous . Now she is on safer ground as her opinion cannot be gainsaid , and is the only opinion that counts

    I
    Last edited by crossref; 15-09-18 at 08:09.

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    Default Re: Illegal studs

    Quote Originally Posted by crossref View Post
    Ref 12 is designed so that it is difficult or even impossible to inspect any stud by eye and tell whether it is illegal
    That indeed is the sad truth of it ...

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