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Turntable problem

Discussion in 'Badminton Stringing Techniques & Tools' started by PopsiclePete, Feb 11, 2012.

  1. PopsiclePete

    PopsiclePete Regular Member

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    So, I haven't touched my stringing machine since, august of last year.

    I bring out and want to string, however, the turntable does not rotate. I've put some wd-40 on that and it improved slightly.

    I'm currently using a Mutual Power 7700 standup. Does anyone have any suggestions on how to get it going again?
     
  2. PopsiclePete

    PopsiclePete Regular Member

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    put some more wd-40 and it's going smoother, but still not spinning freely..hmmm, take it apart and lube it up?
     
  3. kwun

    kwun Administrator

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    not sure how the MP7700 is constructed. does the turntable rotate over a bearing?

    it is hard to imagine a bearing would sieze up within 2 yrs, esp since Toronto doesn't have a particularly humid climate.

    is there a brake?

    sounds like a disassembly and re-lube is in order.

    do post some pics.
     
  4. Andy05

    Andy05 Regular Member

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    Yeah same advice as Kwun
    Check for a brake
    WD-40 turn it as much as possible, then add a little more spray and try to repeat.
    If not just take it apart and empty your WD-40 can towards the bearings

    Good Luck
     
  5. PopsiclePete

    PopsiclePete Regular Member

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    time to take it apart, I took the off the base, turned it upside down and loaded it with wd-40.

    There is a break on it and I've loosened it as much as I can, hell, I even "un-screwed" the pin.

    By the way, it's nice to be back playing badminton and visiting this forum. I missed you crazy lot haha
    IMAG0108.jpg
     
  6. kwun

    kwun Administrator

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    so there is no ball or needle bearing? just metal on metal?

    WD40 is ok to use to un-seize as well as to clean off anything that has built up over time. however, to lubricate it for long term it might be better to apply some grease instead.
     
  7. PopsiclePete

    PopsiclePete Regular Member

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    just good old-fashioned metal, but I can't seem to get into the rotator housing to wipe the gunk off, I've unloaded as much as I could with the wd-40 but beyond that I'm lost.

    thanks for the kwun & Andy
     
  8. Mark A

    Mark A Regular Member

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    My PP Pilot turntable bearing is the same: metal on metal. I cleaned both mating surfaces with a toothbrush and rubbing acohol, then dumped some PTFE and "gooey" bearing grease in. Spins around too fast now, if anything:).

    If you can, replace that metal washer with a plastic one (as narrow as possible).
     
  9. kwun

    kwun Administrator

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    i have the same problem with my ASE. being so smooth means that it probably has ball bearing inside. the problem is that it is too loose. the table oscillates on tension sometimes and i don't get enough stability during weaving.
     
  10. Andy05

    Andy05 Regular Member

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    Rubbing alcohol, great shout!
    I've been going through a few cleaning products to give my machine a full deep clean and I hadn't thought of that.
     
  11. kwun

    kwun Administrator

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    alternatively you can use degreaser. i got a bottle from bike cleaning and it worked really well on my gripper.
     
  12. Mark A

    Mark A Regular Member

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    Judging by Noah's videos, it's also a problem on the Gammas. Seems we want to have our cake and eat it - easy to spin, but behaves itself when weaving and tensioning. I always make sure my turntable is aligned properly before commiting to a pull!
     
  13. kwun

    kwun Administrator

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    i always wonder if we can make a stringing machine that knows what is going on and react accordingly.

    if it knows that it is not tensioning, then loosen the turntable bearing.

    heck, why not motorize the turntable, it should know which string we are working on. rotate the turntable to the right spot, we just need to put the string on the gripper and engage it.

    is that taking away too much of the skill/fun of stringing?
     
  14. Mark A

    Mark A Regular Member

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    Don't give Yonex any ideas, Kwun...

    If I still had my electrical engineering hat on, I'd have a crack at a motion-actuated electronic brake (then sell it to the highest bidder;)).
     
  15. Mark A

    Mark A Regular Member

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    O/P, you can also soak the relevant parts overnight in engine degreaser (having just dumped my mountain bike chain in a tub of the stuff reminded me about it;)).
     
  16. PopsiclePete

    PopsiclePete Regular Member

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    I bought a de-greaser, wd-40, lubricant. It works when I take it apart, but then when I put it back together it seems to be sticky. I will try rubbing alcohol and luby grease.

    Thanks Mark! I'll get back to you guys later.
     
  17. PopsiclePete

    PopsiclePete Regular Member

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    so I bought some lithium white grease, slightly bit thicker and it seems to work too well haha

    Now the whole shaft has shifted into the whole peace...I need to lift it but that's not the hard part.

    Anyone have other suggestions? IMAG0120.jpg
     

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