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Some math here!

Discussion in 'Grip' started by Accordaz, Feb 7, 2012.

  1. Accordaz

    Accordaz Regular Member

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    Some math here! (Comparing grip size)

    Hello there

    My short story:
    I'm going to get a Victor BS LYD (G2), because there's no G3 available there.
    Here, the measures (by victorsport.com.tw):
    [​IMG]

    The question is: What are these 8.1cm? surface cm2? If so and if the grip would be completely round we could calculate the radius:
    G2: 8.1 / π (Pi) -> √ = 1.60571cm
    G3: 8.5 / π (Pi) -> √ = 1.64488cm

    Therefore, the average length is:
    G2: 1.60571cm * 2 = 3.21142cm
    G3: 1.64488cm * 2 = 3.28976cm

    That means the difference (relating to the radius) is around 0,40mm
    Therefore I need a overgrip with 1(!)mm thickness for a Victor G2 if my overgrips with 0,6mm matched well to my rackets with G3 well.

    Well... I really doubt that my calculations are correct. Maybe they are correct calculated but are nonsense, because I'm still not sure what these 8.1 / 8.5cm are:confused:
     
    #1 Accordaz, Feb 7, 2012
    Last edited: Feb 7, 2012
  2. Accordaz

    Accordaz Regular Member

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    Lol. What am I calculating for. There's also an english explanation:
    "G"is the unit of grip diameter. G1 stands for 7.9cm, G2 stands for 8.1cm, and G3 stands for 8.5cm.

    That means: radius (G2) 4.05cm vs (G3) 4.25cm
    That also means 0,2cm or 2mm difference between G2 and G3!

    Conclusion: If I'm used to 0,6mm with a G3 racket (= 4,25 + 0,6 = 4,85cm) I have to get a 0,8mm overgrip if I'm going to get a G2 racket (4,05 + 0,8 = 4,85cm)

    Could someone reply to this and confirm my calculations? :D
     
  3. demolidor

    demolidor Regular Member

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    Depends on how you will wrap it ;). With complete overlap (50%) an 0.6 has already become 1.2 (like here http://www.badmintoncentral.com/forums/showthread.php/81662-RKEP-Grip?p=1683504#post1683504)

    So 5.45-4.05=1.4 => 0.7mm overgrip (0.75mm at least are available)
     
  4. Accordaz

    Accordaz Regular Member

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    Lol, yes. Simple, but effective! That's a very good idea to overlap! *facepalm about myself* Why didn't this variant cross my mind?! :p

    Usually I overlap the overgrip as less as possible. Surely it's not possible to do an overgrip completely flat due the minimal overlaps I have on the overgrip. But eventhough there are some tiny "hills" I'd say my overgrip makes the grip 0,6mm thicker.

    BUT! Wait, wait, wait...!
    The grip has a radius of 4cm and more? LOL, that's not possible. Look at your yardstick (measuring tool). There's no way that the grip has a radius of ca. 4cm! :eek:

    Damn... I really wanna finish this calculation o_O" Eventhough the 50% overlap is a great idea.

    And: 0,6mm (milimeters!!!) or 0,8 -> there's almost no (visible) difference. Can these declarations be real? I also can't imagine that there's a real feeling difference between 0,6mm and 0,8mm. These milimeters, guys!:confused:
    I'm confused... :S
     
    #4 Accordaz, Feb 7, 2012
    Last edited: Feb 7, 2012
  5. a|extan

    a|extan Regular Member

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    wow
    u must be a engineer.... count down even to the micro milimetre
    i seriously just wrap until the feel i like...

    usually i use have G5 racket... but oso there r G4... hence i just wrap the grip abit different to get what i want
     
  6. demolidor

    demolidor Regular Member

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    :D G is the circumference ... (so indeed you should re-do the numbers)

    And you will want to overlap like I did without any original grip underneath it ;) (so just wood and some tape)
     
    #6 demolidor, Feb 7, 2012
    Last edited: Feb 7, 2012
  7. Accordaz

    Accordaz Regular Member

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    I will measure as soon as possible. But it seems to be circumference and NOT diameter as declared from VICTOR.

    Btw: you didn't notice too that the numbers were (totally) wrong :p
     
  8. demolidor

    demolidor Regular Member

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    Yes the BC community is so smart I don't expect to see mistakes ;):D. (also often english measurements are used for gripsize around here and for Victor according to the catalogue - G2 = 3 1/4inch, G3 = 3 3/8 and G4 3 1/4inch [=8,26 - 8,57 - 8,9cm] and I assume G1 would be 3 1/8inch)
     
  9. fiq_axis

    fiq_axis Regular Member

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    so, the G5 is the biggest?
     
  10. a|extan

    a|extan Regular Member

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    G5 for yonex is the smallest.

    dun think there is a G5 for victor

    grip size for victor is quite the reverse for yonex

    Victor G2 is equal to Yonex G5.
     
  11. fiq_axis

    fiq_axis Regular Member

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    thanks alex!
    one more question, G5 is equal to 8.1cm and the G4 is 8.5cm right?

    MATH makes us confuse. LOL
     
  12. Accordaz

    Accordaz Regular Member

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    grip sizes Victor / Li-Ning -> Yonex

    People, don't give any attention to this maths lol, since alle these math stuff are wrong calclated due wrong used units:rolleyes:

    btw, this may help you:

    Grip sizes - comparison: Victor / Li-Ning -> Yonex
    G2/S2 -> G5 (small grip)
    G3/S3 -> G4 (medium grip size)
    G4/S4 -> G3 (large grip size)

    I've never seen any S4 (LN) grips before.
    There are also some posts about a very small grip G6 (for Japan only):confused:
    Most of you will get used to S2 or S3.
     
    #12 Accordaz, Mar 25, 2012
    Last edited: Mar 25, 2012

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