User Tag List

Page 11 of 22 FirstFirst 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 LastLast
Results 101 to 110 of 211
  1. #101
    Regular Member
    Join Date
    Jun 2002
    Location
    Waterloo, ON
    Posts
    153
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Somone should mail cooler every new racket to test

  2. #102
    Regular Member
    Join Date
    Apr 2002
    Location
    Vancouver, Canada
    Posts
    2,371
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Stiffness versus Time

    Originally posted by cooler
    As Part Four of the racket measurement thread, i have look into how racket stiffness hold out over time. I think most of us don't give much thought about this topic when comparing rackets from various sources like friends, stores or their own. Well, the result of my test would change that. I haven't post it before because i lack the racket samples to make comparision at single point in time. The result shown below are from tests conducted consectively with same measuring devices.

    I don't say the result applies to all badminton rackets but if MP99 with H.M. graphite, Ultimum Ti frame and shaft does, i'm sure the other rackets of 'lesser' quality should suffer more stiffness degradation.

    The reference racket is a brand new cab20MS with relative stiffness = 0
    Some of the articles that I read in raquettech.com seems to suggest that the reason for the decrease in stiffness is dued to microcracks forming within the racquet due to stringing and restringing, etc. It would be interesting to compare a new racquet to one (same model) that was manufactured a while ago but never used. This is still not completely accurate too as materials used could be different (i.e. not from the same batch).

  3. #103
    Regular Member
    Join Date
    Apr 2002
    Location
    Basement Boiler Room
    Posts
    22,118
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Originally posted by kwun
    cooler. any chance of getting your hands on a cab30ms to add to your data set?
    I'll check with eggroll. I'm sure he will get the first few in to show to retailers. I haven't talk to him for a while.

  4. #104
    Regular Member
    Join Date
    Apr 2002
    Location
    Basement Boiler Room
    Posts
    22,118
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Re: Stiffness versus Time

    Originally posted by Winex West Can
    Some of the articles that I read in raquettech.com seems to suggest that the reason for the decrease in stiffness is dued to microcracks forming within the racquet due to stringing and restringing, etc. It would be interesting to compare a new racquet to one (same model) that was manufactured a while ago but never used. This is still not completely accurate too as materials used could be different (i.e. not from the same batch).
    Unlike the tennis racket, major flexing of badminton racket occurs along the shaft. Repetitive restringing does weaken the frame but i dont see it would affect badminton racket stiffness degradation. The cause of the weakened shaft is the same though, microfracture of carbon fibers proportional to the maxiumum flexing that the shaft subject to over time.

  5. #105
    Regular Member
    Join Date
    Nov 2002
    Location
    calgary
    Posts
    293
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Hi Cooler,

    Haven't been here in a while and was going to e mail you directly but thought for the benfit of the BF'ers I would post here. I have all the new raquets in( At 800, 300, cab 30 etc.) and will get the new frames to you for your measurement and demo use as soon as I can. I have two of everything coming including the new shoes. Delivery will be tommorrow. Call me on my cell so we can get together. I will need to get the discontinued models from you to sell. Thanks for your help this season. Keep the faith brother!

  6. #106
    Regular Member
    Join Date
    Apr 2002
    Location
    Basement Boiler Room
    Posts
    22,118
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    By request (winex west can), this post form part five of the 2003 yonex racket measurements. He wanted to know how new racket stiffness varies among the same model. Although i admit i only have 2 samples of each model to examine, the results are consistent and inline of what they should be. These data are not made up or measure just now. I had collected these data since day 1 when all the rackets were measured, eliminating the possibility of change of ambience condition, equipment fluctuation and of course gravitational constant

    This and previous stiffness results tend to say yonex rackets have stable performance parameters between different weight class, grip size, and within product model. (I'm not saying other brands don't). It's just that from only 2 samples of each model, mp99, mp33, and cab23, the stiffness trends fall within range of what it is expected. Deflection measurements are within +/- 0.5 mm

    (eggroll's mp33 can be considered brand new as i doubt people want to demo a mp33 when eggroll have mp100/99/88/77, AT500/700 in his bag)
    Attached Images Attached Images  
    Last edited by cooler; 03-10-2004 at 11:42 PM.

  7. #107
    Regular Member
    Join Date
    Apr 2004
    Location
    GTA/MARKHAM
    Posts
    10
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Cooler have u ever tried at700 ?
    tell meh wht u think about at700
    cuz i just bought one

  8. #108
    Regular Member
    Join Date
    Jan 2003
    Location
    TW
    Posts
    3,949
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Quote Originally Posted by AZNJORDAN69
    Cooler have u ever tried at700 ?
    tell meh wht u think about at700
    cuz i just bought one
    Why don't you look at the first page? He has AT700 in the data.

  9. #109
    Regular Member ants's Avatar
    Join Date
    Jul 2002
    Location
    Malaysian Citizen of the World
    Posts
    13,157
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Any luck on testing Ti10 ? It will be good if we can have some results.

  10. #110
    Regular Member
    Join Date
    Apr 2002
    Location
    Basement Boiler Room
    Posts
    22,118
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Quote Originally Posted by ants
    Any luck on testing Ti10 ? It will be good if we can have some results.
    check in page 3 of this thread.

Page 11 of 22 FirstFirst 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 LastLast

Similar Threads

  1. Raquet Swingweight Measurements
    By Neil Nicholls in forum Badminton Rackets / Equipment
    Replies: 5
    : 03-21-2011, 03:45 AM
  2. New Yonex grip measurements?
    By nummertwente in forum Grip
    Replies: 13
    : 05-22-2008, 11:46 AM
  3. Smash Speed measurements
    By likeahcild in forum General Forum
    Replies: 23
    : 04-25-2007, 03:03 PM
  4. Forza 2003 Rackets
    By Chia in forum Badminton Rackets / Equipment
    Replies: 51
    : 04-09-2003, 02:14 AM
  5. court measurements
    By Peter T. in forum General Forum
    Replies: 2
    : 03-31-2002, 12:41 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •