Revo 4000 Linear Grip

Discussion in 'Stringing Techniques / Stringing Machines' started by lasdj, Jul 31, 2008.

  1. lasdj

    lasdj New User

    Joined:
    Apr 8, 2008
    Messages:
    57
    I had my Revo for about a month already and notice I an issue. I might be just me but when I place the string in the gripper and pull tension it works fine. But when I release the tension the string is still in the gripper. Sometimes I would need to just give the gripper a lil push/pull to release the strings but the other night it really held on to the strings and was very difficult to release. Do I need to clean it? I was going to use WD40 however it was a big investment and dont want to do anything with out any advice first.

    Thanks.
     
    #1
  2. radigan

    radigan Rookie

    Joined:
    Dec 18, 2007
    Messages:
    162
    Location:
    Kansas
    I am not a big WD-40 fan. I would stay away from that. The gripper runs in tracks. Make sure the tracks are clean. I would clean them with alcohol first and then use a good quality silicone to lube it. The first question to ask is why is it binding up on you. I have only had mine a month but I have had no problems.
     
    #2
  3. Spatula

    Spatula Semi-Pro

    Joined:
    Sep 17, 2004
    Messages:
    540
    Location:
    Virginia
    Give Mark a call or email @ Alpha. He's a champ at helping out customers after the sale. he will get you straight in no time.
     
    #3
  4. YULitle

    YULitle Hall of Fame

    Joined:
    May 23, 2005
    Messages:
    4,132
    Location:
    Guymon, OK
    Is this happening when the string is still taught? If you slide the tension mechanism towards the frame more, does it release?
     
    #4
  5. lasdj

    lasdj New User

    Joined:
    Apr 8, 2008
    Messages:
    57
    Well sometimes when I slide the mechanism toward the frame it would release but lately it hasnt. Like the gripper is stuck so I really needed to either pull or push to get it loose again.
     
    #5
  6. YULitle

    YULitle Hall of Fame

    Joined:
    May 23, 2005
    Messages:
    4,132
    Location:
    Guymon, OK
    Okay, then yeah, that's a problem. I'd call Mark.

    One thing you might want to try is giving the screw on the back of the gripper a few clockwise turns to keep the gripper from shutting as much.
     
    #6
  7. es-0

    es-0 Rookie

    Joined:
    Aug 10, 2006
    Messages:
    376
    Location:
    Hendersonville, NC
    Bit off topic, is the gripper on the Revo the same as the Pioneer?

    And how does the gripper work, I can't seem to image how it works.

    Any answers?
     
    #7
  8. lasdj

    lasdj New User

    Joined:
    Apr 8, 2008
    Messages:
    57
    I dont have his number. I tried emailing him today but it wasnt his email its the general alphatennis email. hopefully he'll get back to me and we can get this resolved.

    thanks for all your help.
     
    #8
  9. YULitle

    YULitle Hall of Fame

    Joined:
    May 23, 2005
    Messages:
    4,132
    Location:
    Guymon, OK
    No, they are different in some ways. The gripper works like this. The two black paddles are in the middle of the two silver mounts. When the black paddles slide into the mount, a group of ball bearings slide up a ramp on the inside of the silver mount that pushes the black paddles together. This makes it so that further in the paddles go, the more they are pushed together. A screw on the back can artificially control the maximum amount the paddles can come together. The Pioneer does not have this control.
     
    #9
  10. es-0

    es-0 Rookie

    Joined:
    Aug 10, 2006
    Messages:
    376
    Location:
    Hendersonville, NC
    Mark's email is: mark@alphatennis.com

    I've been talking to him about a Pioneer so I had it on hand. He should get back to you quick.

    I've only strung on one machine, and it was a drop-weight with a rotational gripper, so forgive some of my naivety.

    I'm getting a Pioneer DC from Alpha in the next couple of weeks (apparently the one you have) and I just want to be prepared to use it.

    [​IMG]

    How exactly does it work.:-? I feel clueless.
     
    #10
  11. YULitle

    YULitle Hall of Fame

    Joined:
    May 23, 2005
    Messages:
    4,132
    Location:
    Guymon, OK
    Basically, you put the string in the gripper, hold the string in the gripper and then lower the arm with your other hand. The gripper grips the string (at which point you can let go of the string) and the arm drops (applying tension.) Then, you raise the arm and drop it until the arm is parallel. Move clamps. Then, release the catch on the bottom of the barrel, move the arm back to it's upright resting position, and remove the string.
     
    #11
  12. es-0

    es-0 Rookie

    Joined:
    Aug 10, 2006
    Messages:
    376
    Location:
    Hendersonville, NC
    OK, I was sure I was over complicating things, thanks for the replies YULitle.

    I'm going to be memorizing all of the videos you have up on youtube, thanks again.
     
    #12
  13. lasdj

    lasdj New User

    Joined:
    Apr 8, 2008
    Messages:
    57
    Thanks for the email addy
     
    #13
  14. diredesire

    diredesire Super Moderator

    Joined:
    Mar 16, 2004
    Messages:
    6,723
    It happens sometimes on linear grippers. Just give them a whack. i wouldn't use WD40 on the ball bearings, you'll probably just end up with lubricant on your grippers, which is never a good thing. If you want to try to avoid it, wiggle them a little bit before stringing to get them moving, and they'll likely stick less. If you ARE intent on lubricating them, use something like graphite powder instead.
     
    #14
  15. lasdj

    lasdj New User

    Joined:
    Apr 8, 2008
    Messages:
    57
    thanks i got graphite powder at home so it should be good then. Where would i put it the powder i mean. can someone please post a pic so i dont put it in the wrong place?

    Update: I got a reply back from Mark and he said to use some WD40 and spry it into the bearing area with the red straw.
     
    #15
  16. radigan

    radigan Rookie

    Joined:
    Dec 18, 2007
    Messages:
    162
    Location:
    Kansas
    So much for my theory of staying away from WD-40!
     
    #16
  17. YULitle

    YULitle Hall of Fame

    Joined:
    May 23, 2005
    Messages:
    4,132
    Location:
    Guymon, OK
    I'd still save that email. :D
     
    #17
  18. jasonstar

    jasonstar New User

    Joined:
    Sep 15, 2007
    Messages:
    22
    I have had my revo for about a month as well and have had that same thing happen. I did adjust the screw and that seem to help it. No other probs with my Revo. Good machine!
     
    #18
  19. lasdj

    lasdj New User

    Joined:
    Apr 8, 2008
    Messages:
    57
    Ok last night before stringing another racket I place the graphite liquid near the bearings, (i hope it was the bearings) but once i did that and started to string it worked very well. After releasing tension the gripper also release the string as well. its so much easier than fussing with it everytime. thanks for all your help. thanks to diredesire for the advice on graphite, im glad i had some left over when i was fixing my door handle.
     
    #19
  20. diredesire

    diredesire Super Moderator

    Joined:
    Mar 16, 2004
    Messages:
    6,723
    No prob, I'm still kind of curious as to why Mark recommended WD40? Maybe because it's more common? I would hesitate with any sort of liquid lubes near my equipment... The tension adjusting screw might also help you prevent the lock up, if you experience it again.

    (I like graphite powder because a little goes a long way, they use it for gun maintenance, from what I hear)
     
    #20
  21. lasdj

    lasdj New User

    Joined:
    Apr 8, 2008
    Messages:
    57
    Update: Mark emailed me back and followed up on my problem. He did say that recommended WD-40 because that was a common household item and can quickly help. He said he normally uses a silicone spray however its not very common in people's household. But overall thanks to everyone including Mark for the help.
     
    #21
  22. radigan

    radigan Rookie

    Joined:
    Dec 18, 2007
    Messages:
    162
    Location:
    Kansas

    Ok, Mark absolved me of my guilt from recommending silicone spray.
     
    #22
  23. rasajadad

    rasajadad Hall of Fame

    Joined:
    Apr 24, 2006
    Messages:
    1,993
    Location:
    Western MA
    Yes, Mark likes the WD! He recommended I use it on the springs inside the clamps. Although I was hesitant, I did what he said. Guess what? He was right!
     
    #23
  24. diredesire

    diredesire Super Moderator

    Joined:
    Mar 16, 2004
    Messages:
    6,723
    Yep, WD-40 will definitely work in a pinch, but be very careful not to get it on any gripping surfaces, and don't over-spray, it will leak out!

    I've used WD40 for machine maintenance, but I always try to clean (and soak) up as much as possible.
     
    #24

Share This Page