Zep Tennis Sensor

Discussion in 'Other Equipment' started by TimothyO, Jan 7, 2014.

  1. TimothyO

    TimothyO Hall of Fame

    Joined:
    Oct 5, 2010
    Messages:
    3,592
    Location:
    Baseline
    Kudos to TT member Canadad for this find. Very interesting solution for data gathering. Cheaper, more flexible, and an extra sensor compared to Play and Connect from Babolat.

    But also fairly heavy at 18g for sensor and mount. Integration without changing mass and balance would be limited to hard core gear heads and might not be possible with most frames used in stock form since it's too difficult to remove mass in that case.

    http://www.zepp.com/tennis/
     
    #1
  2. v-verb

    v-verb Hall of Fame

    Joined:
    Nov 9, 2012
    Messages:
    2,024
    Location:
    Toronto
    #2
  3. eazyswing

    eazyswing New User

    Joined:
    Nov 11, 2013
    Messages:
    20
    That shot-stats device seems to be better implementation than zepp. Zepp thingy looks awkward installed to the tip of the grip.

    My style to hold a racquet for example is at the very end of the grip, pinky finger sometimes over the ledge. So can´t seem myself to enjoy that little extra bump in grip.

    Meanwhile shot stats way seems more convenient. It doesn`t bother you when you are playing, and I think that it will stay put better. If they get that device small enough and working good, I am willing to buy one. Of course if the price is nothing outrageous.
     
    #3
  4. deviant14

    deviant14 New User

    Joined:
    Apr 12, 2010
    Messages:
    10
    Location:
    Seattle, WA
    shot stat does look interesting...however, I don't think I would want a the screen to be on the dampener platform it's using. I use Babolat Play right now and prefer the info/data just to be sent to an app. I would imagine not implementing a built-in screen in the shot-stat would reduce the overall weight of the device although it does look convenient:)
     
    #4
  5. Dimcorner

    Dimcorner Professional

    Joined:
    Oct 12, 2012
    Messages:
    814
    That and if they can save some weight off the screen to have it D/L it would be better still. Also one less thing to break when you mis-hit a tennis ball right in that spot!

    Wonder how it would register a direct impact of a tennis ball?
     
    #5
  6. v-verb

    v-verb Hall of Fame

    Joined:
    Nov 9, 2012
    Messages:
    2,024
    Location:
    Toronto
    Good questions - I can ask Shot-Stats to come on here and reply
     
    Last edited: Jan 7, 2014
    #6
  7. ShotStatsOfficial

    ShotStatsOfficial New User

    Joined:
    Aug 9, 2013
    Messages:
    64
    Hey there - Lavie here, fresh off coaching in the arctic winds of...Atlanta (believe it or not). I am one of the founders of Shot Stats and here to answer your questions.

    Price - nothing concrete, but our goal is to price Shot Stats round about Zepp’s pricing ($150), hopefully less. We definitely don't want to go over the price of a performance racket.

    The screen - we believe that having instant and convenient access to data is very valuable, particularly while coaching. A player can see data for a specific technique/shot. Also, it provides a sense of instant gratification (“Whoa, I just hit a winner down the line at 72 mph!”). With that being said, we are looking at producing different models that may only offer real time syncing though a mobile device (like Babolat, but automatically updating as opposed to only syncing). This model will not have a screen and will be lighter. Additionally, our hope is that the weight will impact the swing weight less than if placed at the handle of the racket.

    Ball impact - trust me, one thing I HATE is when my dampener flies off and I have to run around looking for it. This will not fly off and housing will be impact resistant. We are looking at strong, light, and, high-contrast screens (perhaps e-ink, like in Kindles). To your point, if the ball hits the device, it will register as an off-center shot, towards the bottom.

    Our goal is to build a practical and valuable tool for players/coaches to improve tennis technique. We are looking at new ways to provide feedback and even incorporate contextual data (winners, approaches, gameplay styles, tactics etc.) through video analysis integration.

    If you have any other questions or comments please let me know here or directly at (lavie AT shot-stats.com). I’d love to hear from you.

    Happy Hitting!
     
    #7
  8. mikeler

    mikeler G.O.A.T.

    Joined:
    Sep 26, 2008
    Messages:
    19,560
    Location:
    Central Florida
    ^^^ Thanks for coming in with that info. Sounds like you guys are heading in the right direction.
     
    #8
  9. Dimcorner

    Dimcorner Professional

    Joined:
    Oct 12, 2012
    Messages:
    814
    Nice! Definitely looking forward to this product.

    Here are a few questions.

    It seems like the dampener goes across a few strings. Does that mean that it will have to be installed during stringing? (not an issue for me since I have a stringing machine)

    If so then wouldn't charging it be a tad difficult?

    I signed up on your site, do you have any updates on estimated release (2014? 2015?). I know this one is a difficult one and worse thing is to set an expectation and not meet it, but targeting a release date would be nice :)

    You guys doing Kickstarter?
     
    #9
  10. pennc94

    pennc94 Semi-Pro

    Joined:
    Jul 26, 2006
    Messages:
    753
    Location:
    Maryland
    I dislike the Zepp size/location/mass. This shock thing looks better. "Weighs less than 2 dampener" per the website. What is the precise mass? I still think the best method would be to fit the item securely inside the trap door of the buttcap. If you don't use a dampener it will feel different on he strings.
     
    #10
  11. Dimcorner

    Dimcorner Professional

    Joined:
    Oct 12, 2012
    Messages:
    814
    Trap door would be tricky as well. Some racquets have twin tubes or smaller holes.
     
    #11
  12. pennc94

    pennc94 Semi-Pro

    Joined:
    Jul 26, 2006
    Messages:
    753
    Location:
    Maryland
    There is space between the hairpin end of the racquet and the trap door. Something the size and mass of those lithium disc batteries is what I am thinking about.

    Better yet, make it as a trap door to fit inside a number of buttcaps (Head, Babolat, Wilson, etc.). Kind of like Donnay's weighted butt caps.

    Hey can I get royalties if someone makes these?
     
    #12
  13. ShotStatsOfficial

    ShotStatsOfficial New User

    Joined:
    Aug 9, 2013
    Messages:
    64
    Good question. The device will contain 2 pieces that will latch onto the stringbed and mount post-stringing. It will be charged via a charging adapter via USB.

    Our target date for releasing a beta to select testers is in the May/June timeframe. We will have a better idea of our launch date once beta testing is complete. Sorry I couldn't get you a more precise date.

    We do plan on going to Kickstarter. We'll be offering great rewards!

    Thanks for the questions and let me know if you have anything else on your mind.
     
    #13
  14. ShotStatsOfficial

    ShotStatsOfficial New User

    Joined:
    Aug 9, 2013
    Messages:
    64
    We are still looking for the perfect material that is light-weight and offers both durability and flexibility, so we cannot provide a precise mass of the device just yet. We'll make sure to announce the weight when we finalize it. It is indeed imperative that we keep the weight of this device low.

    The trap door is an interesting solution, but we wanted something that was very easily transferable to facilitate coaching. As a coach myself, I would love to attach Shot Stats to each of my players' rackets. We believe that unlatching and latching from the string bed would be more seamless than installing into the butt cap.

    Ah, to dampen or not to dampen, that is the question. By the very nature of the device touching the strings, there will be a dampening effect. Our goal is to find different types of materials that make up a "dampening kit" that can enhance/lessen the dampening effect.

    I hope that answered your questions. Let me know if you have anything else.
     
    #14
  15. Dimcorner

    Dimcorner Professional

    Joined:
    Oct 12, 2012
    Messages:
    814
    Does touching the strings make any difference to the sensor or does it just measure racquet acceleration in space?

    Also what does the rulebook say about instantaneous feedback during a match? Is it legal to use as a coaching device during matches?

    How do I sign up for Beta? :)

    Little off topic but I might be moving to Atlanta area so I'll get in touch with you if I do to see about clinics/league play in the area if that is ok with you :)
     
    #15
  16. ShotStatsOfficial

    ShotStatsOfficial New User

    Joined:
    Aug 9, 2013
    Messages:
    64
    Touching the strings will actually have a positive impact. Having the sensor closer to the actual contact point (sweet spot) will help provide more accurate racket head speed and ball impact (cleanliness of shot) metrics. This is due to the fact that the sensors will be able to take in the vibration frequency off the strings to provide some unique and valuable data. So in short, it will use both the motion of the racket head and vibration frequency to gather data.

    We definitely thought about this and were encouraged by the new ITF ruling. However, you are right, players can't have access to the data while on court, but can record. We are planning to have a "record only" feature, nothing will be instantaneously outputted on the screen.

    We are currently running a contest of sorts on our site. The top referrers leading to new sign ups will receive betas to help test and keep. Check out the site for more details.

    Awesome! I recently moved to Atlanta myself after coaching in Sydney. I love it and the tennis here is great. I have honestly been elated by the sheer number of players there are here. I am a teaching pro with the Universal Tennis Academy here in ATL. I would love to connect you with leagues/teams/coaches/clinics. I am traveling quite a bit for Shot Stats and will be out of the country for 3-4 months, but if you want to grab a cup of coffee when you arrive, let me know. Either way, I'd love to give you more of the tennis landscape over email (lavie AT shot-stats.com).

    Happy Hitting!
     
    #16
  17. k-y

    k-y New User

    Joined:
    Sep 11, 2005
    Messages:
    81
    Location:
    Redmond, WA
    Would Sugru work?
     
    #17
  18. ShotStatsOfficial

    ShotStatsOfficial New User

    Joined:
    Aug 9, 2013
    Messages:
    64
    Funny you mention that! Our first prototype was made of Sugru. It is far to heavy and isn't as aesthetically pleasing.

    It actually can be seen, in action, in the video.
     
    Last edited by a moderator: Jan 10, 2014
    #18
  19. ShotStatsOfficial

    ShotStatsOfficial New User

    Joined:
    Aug 9, 2013
    Messages:
    64
    Hi pennc94

    To clear things up a bit, our goal is to keep it around the weight of 2 dampeners. We all currently looking to source screens at our desired dimensions. The size greatly depends on customization costs. If we can keep the device over just 4 main strings, we should be able to be close to our goal.

    Happy Hitting!
     
    #19
  20. ShotStatsOfficial

    ShotStatsOfficial New User

    Joined:
    Aug 9, 2013
    Messages:
    64
    Hi Deviant -

    I would like to talk to you more about your thoughts on possible ways you believe could make the screen more useful. We are considering various use cases for both models (screen and no screen).

    Perhaps you like to exchange thoughts here or over email?

    Thanks and happy hitting!
    Lavie
     
    #20

Share This Page