SNEAK PEEK: TW University (new TW feature)

Discussion in 'Racquets' started by TW Staff, Apr 21, 2008.

  1. TW Staff

    TW Staff Administrator

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    Check out the new Tennis Warehouse University.

    Brush up on your racquetology and string theory:

    http://twu.tennis-warehouse.com/learning_center/contents.html


    You guys are the first to see this. Please post feedback here and let us know if you find any broken links, have questions or any other issues.

    We hope you enjoy it.

    Thanks,
    Chris.
     
    #1
  2. Bronc10is

    Bronc10is Rookie

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    just quickly browsed through it, awesome feature. Thank you TW
     
    #2
  3. Ferrari1190

    Ferrari1190 Rookie

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    awsesome, it has all the info you'd ever need!
    thanks :)
     
    #3
  4. Nitro

    Nitro Rookie

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    Great idea. Very interesting to read.
     
    #4
  5. lude popper

    lude popper Banned

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    FINALLY

    I've been waiting for years for the industry to update their tired power formula. This replaces an abstract formula with something empirical. Rather than applying one non-desrcript power reference to the entire stringbed, this gives us a functional, detailed power grid. It answers the how, why, when, and where of power -- and it gives us the actual data along with an easy-to-understand interpretation. Power de-mythologized. You have opened up a very large door here. Kudos.
     
    #5
  6. babolat15

    babolat15 Hall of Fame

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    this is incredible, just wondering is 3 percent going to make that huge of a difference
     
    #6
  7. VGP

    VGP Legend

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    Thanks.

    I hope it's well received.
     
    #7
  8. Chauvalito

    Chauvalito Hall of Fame

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    TW, at some point can you post the methods used to calculate the power potential?

    I apologize if it is already posted, I looked through the site quickly. Very cool.
     
    #8
  9. todd03blown

    todd03blown Rookie

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    very cool indeed!!
     
    #9
  10. meowmix

    meowmix Hall of Fame

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    SWEET!!!

    You DEFINATELY need to put more stuff in the Nerds category to make us feel special :)

    Wow, I never knew that the microgel prestige mid was so powerful... more so than my Gamma!!!
     
    #10
  11. TW Staff

    TW Staff Administrator

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    Please play around with some of the features and let us know if anything is not working or needs further explanation.

    Thanks for everyone's feedback.

    Cheers,
    Chris.
     
    #11
  12. MAX PLY

    MAX PLY Hall of Fame

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    Very nice feature. Thanks for thinking of it and executing it.
     
    #12
  13. bertrevert

    bertrevert Hall of Fame

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    Racquet choice - swingweight THE MOST important factor!
    http://twu.tennis-warehouse.com/learning_center/totalperformance.html

    I thunderstruck. So many of the threads in the racquet's forum needed to be more about swingweight - that great intangible. Sure it's measurable, but only in matchplay do you find out how much you personally can keep swinging (to the end of the match).

    Great stuff, v. interesting.

    Lots of homework at this uni... you're introducing a lot of new ways to discuss racquets. Thank you.

    PS. I like the fact that the sweetest spot is the 'G' spot... :p
     
    #13
  14. bertrevert

    bertrevert Hall of Fame

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    #14
  15. Soundog

    Soundog Rookie

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    Wow ! Thanks TW for a very thorough and well explained run-through of raquet performance parameters in a common sense, no nonsense presentation.

    Perhaps for future addition - a similar thing for strings ? I would like to see graphs of tension ( kgs and pounds ) vs elongation ( mm ) of different strings right up to the point the string snaps given a standard length of string ( say 30cm or so ). This will allow stringers to know at what tension a string will snap and will give us an idea of how a string will behave at different tensions.

    Also how flexible a string is might be useful.

    For the ultra nerds, if the measurements are for various standard string lengths say 5cm, 10cm and 30cm, then it will further help us guess behaviour over various frame sizes as well. ( 5cm measurements to represent very off-centre hits close to the frame. )

    And for us incurable nerds, weights of strings in terms of grams per cm ( or some other suitable measure ) could be useful as some thick poly stringbeds can weigh a few grams more than a thin kevlar string for example. I've found that when trying to hit a 50gm ball on to a 3 inch line from a distance of 78 feet, a few grams has an effect and complements the weighting of the frame.

    Perhaps even friction measurements of different strings by dragging a ball with a weight on top over a string bed and measuring the force required to move the ball over the string bed graphed verses different weights on top of the ball.

    That should take the guesswork and mystique of out string selection !

    :mrgreen:
     
    #15
  16. eagle

    eagle Hall of Fame

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    Super!!!

    r,
    eagle
     
    #16
  17. TokyopunK

    TokyopunK Professional

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    #17
  18. LanEvo

    LanEvo Hall of Fame

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    this is a great site thx tw
     
    #18
  19. Ryoma Kun

    Ryoma Kun Semi-Pro

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    great site, i learned something!
     
    #19
  20. jorel

    jorel Hall of Fame

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    will there be a Master's degree?... i think i have my bachelors already
     
    #20
  21. jorel

    jorel Hall of Fame

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    I love the power imbalance article and never realized that a racquet can be unbalanced lengthwise... it definitely needs more pics to indicate your point and to teach us how to determine if our racquet is unbalanced...

    i would also like to suggest that (if the task is not too herculean) to have certain racquets power imbalance measured (maybe not for every racquet) but maybe for every racquet that a review is written for the racquet. it would be nice to know which racquets are the most balanced. (most well made?)


    thanks... great stuff!
     
    Last edited: Apr 22, 2008
    #21
  22. TW Staff

    TW Staff Administrator

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    Thanks for the continued feedback. We will get the links fixed.

    Jorel,
    We tested tons of racquets for power imbalance, but it only gave the imbalance of each specific racquet and may not be indicative of all such racquets that are the same model.

    I think the important issue is, if you want to match your racquets perfectly, you have to consider the imbalance from side to side as well as the weight, balance and swingweight etc.

    Chris, TW.
     
    #22
  23. Soundbyte

    Soundbyte Semi-Pro

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    There's a typo on the ComparePower site:

    "Power Potential: At each location the ball will rebound off the racquet at the indicated percentage of its impact speeed. For more discussion on what the numbers mean:"
     
    #23
  24. fantom

    fantom Hall of Fame

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    Prince O3 Speedport Tour picture is not working while using the "Compare Racquet Power Levels" application.
     
    #24
  25. tzinc

    tzinc Semi-Pro

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    This looks awesome. But from a quick look it looks like you have some racquets missing like the APDC.
     
    #25
  26. Kaptain Karl

    Kaptain Karl Hall Of Fame

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    I am intrigued. After Girls Season is finished (two weeks) I'll spend more time studying this resource. I think I like it....

    In the "Maximum Shot Speed" link, I'm pretty sure something is written backwards.

    Ingredient Two Revised: Location Speed

    Second, the speed of the racquet is not the same at each point on the racquet. As you move from butt to tip, the speed gets faster and faster. That's because the racquet swings in a giant circle and points in the center of the circle travel in smaller circles than those near the tip, but in the same amount of time (i.e., faster).
    Those "points in the center of the circle" are not moving faster; they are moving slower. They just cover a smaller arc (less distance).

    Am I reading this wrong?

    - KK
     
    #26
  27. TW Professor

    TW Professor Administrator

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    Power Imbalance

    Jorel: We should have a least one pic up soon. Balancing a racquet along the long axis is not easy. However, we have a very good method of doing it, as you will see in the pic.

    We discovered the side to side imbalance when we noticed many racquets have more power on one side than the other. The most logical conclusion was that one side had more weight and that the weight was distributed to increase the power at a given location on the imbalanced side. Balancing along the long axis proved this to be true most of the time, but not all the time. Power imbalance can also arise from unequal side-to-side stringing, unequal flex or torsional stiffness among other things and these won't show up as unbalance from left to right.

    But as Chris said, the main thing to realize is that a perfectly balanced and customized racquet will also take longitudinal balance into account.
     
    #27
  28. TW Professor

    TW Professor Administrator

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    Missing racquets?

    Yes, some racquets are missing. We have about 200 racquets tested. Some of the newer ones remain to be tested and we will fill in the older ones as we go.

    Only current racquets (or closed out models for which TW has inventory) will be linked for reviews, prices, purchase, etc. However, we will retain data on older racquets so you can compare your discontinued sticks with current ones.
     
    #28
  29. GPB

    GPB Professional

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    This info is pretty awesome, and really simplifies things. I can't wait to see it finalized.
     
    #29
  30. tzinc

    tzinc Semi-Pro

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    That's great since a lot of people use older sticks and will be using them for some time since they stock up or continue hunting them down. This University looks like it could take up a lot of my time and probably other people's too studying there lol.
     
    #30
  31. Rabbit

    Rabbit G.O.A.T.

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    This is great. I will definitely spend more time on it. Keep up the innovative work, TW.
     
    #31
  32. TW Professor

    TW Professor Administrator

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    Location Speed-revised

    Perhaps a bit confusing. I hope the edit (done) is better (but, alas, longer).
     
    #32
  33. TW Professor

    TW Professor Administrator

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    TWU...just the beginning.

    This is just the tip of the iceberg. We intend to keep expanding it.
     
    #33
  34. vkartikv

    vkartikv Hall of Fame

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    I'd really like to see how some of the older racquets fare... The 6.0 85/95 and 6.1 classic would be some of those..
     
    #34
  35. FH2FH

    FH2FH Professional

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    Very cool idea. Lots of good info, but it gets a little wordy. I think the University should be more concise [fewer pages/links] and have more graphics. Waiting for the Cliff Notes version... ;)
     
    #35
  36. sonicboi21

    sonicboi21 Banned

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    I think you are missing some importany sticks a lot of ppl use. like APDC.
     
    #36
  37. Serpententacle

    Serpententacle Hall of Fame

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    I agree. There's the APDC+, but not standard. Why is this? Most people own the standard.
     
    #37
  38. TW Professor

    TW Professor Administrator

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    Longitudinal balance photo

    Photo now up on http://twu.tennis-warehouse.com/learning_center/powerbalance.html
     
    #38
  39. jorel

    jorel Hall of Fame

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    #39
  40. Lee James

    Lee James Rookie

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    looks good!
     
    #40
  41. TW Professor

    TW Professor Administrator

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    Jorel, you probably have to refresh your page. The picture of lengthwise balance is up.
     
    #41
  42. jorel

    jorel Hall of Fame

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    nice...........
     
    #42
  43. jorel

    jorel Hall of Fame

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    so I am assuming now that if we order a racquet from TW and ask for a racquet to be balanced from side to side for us.... it can be done for us?

    if so,..... THATS AMAZING SERVICE (in line with the service that many of the top racquet builders in the world give to the pros)
     
    #43
  44. Gee

    Gee Professional

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    As I viewed TW University I noticed that not all frames are available in the database. For example Head MG Prestige MP is not mentioned. Why is this?
     
    #44
  45. Gimmick

    Gimmick Semi-Pro

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    This tool has some nice comparative uses, but it could break down into a useless pile of crap if used improperly. For example, if you go to location "c" and look up the Flexpoint prestige team MP, you will find that its two closest stable mates are the Kinetic Pro 5g and the Metallix 2.
    If "c" is your happy spot and you decide to demo these three 'nearly identical' racquets you will be sorely disappointed to find how completely different they are and how useless "power potential" was to your search.

    If however, you already know what swingweight, balance, and weight range you are looking for, using power potential to check sweetspots and chartacteristics could be extraordinarily beneficial.

    In summary, caveat emptor.
     
    #45
  46. TW Professor

    TW Professor Administrator

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    We simply have not tested all the racquets yet. They will come on line as we get them done.
     
    #46
  47. TW Professor

    TW Professor Administrator

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    Power Potential and Performance

    I
    Yes, caveat emptor to everything. And yes everything is relative to the "experience" of the racquet. But, what power potential has told you is this: if you want a racquet with x amount of power, then these are your choices, so demo them and see which one you like. If you don't like any of them, then you will have to settle for racquets that deliver more or less power than what you were looking for. Choose the "next best" power range and demo again.

    Power potential tells you about the performance of the racquet, not about the player's happy or sad experience with that performance level. If a player gets more ball velocity, depth, or spin from a racquet with a lower power potential, that means that the PLAYER is doing something with the racquet to deliver those results, like swinging faster or at a different angle. Power potential is a measurement of the racquet performance. It is scientifically correct to say one racquet is or is not more powerful than another. This statement in turn does not mean that the player will or will not interact with the racquet to get more or less power (or control or comfort) while playing.

    When you pick a racquet off the shelf it is what it is. Power potential lets you know what, in those now famous words, "is, is." But further, power potential is the only measurement that tells you what the racquet does. It is an actual measurement of performance. All a racquet does is rebound a ball. Power potential tells you how well it does its job. It doesn't tell you how much you will like how it does its job. That's why there are 200 racquets out there.
     
    #47
  48. jorel

    jorel Hall of Fame

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    What is your superhero identity? TW Prof
     
    #48
  49. jazar

    jazar Professional

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    looks amazing
     
    #49
  50. ufg8r

    ufg8r New User

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    I'm really impressed.
     
    #50

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