Spit Leak

Discussion in 'Trumpet Repair and Modification' started by dwp63, Nov 12, 2009.

  1. dwp63

    dwp63 Pianissimo User

    Jan 7, 2009
    I have a trumpet which leaks spit out of the top of the tuning slide at the joint between it and the leadpipe. A technican said to use Selmer tuning slide grease but that didn't help. Would those o-ring slide bumpers help? Any other suggestions?
  2. rowuk

    rowuk Moderator Staff Member

    Jun 18, 2006
    The BEST solution is for a tech to take an expander to the tuning slide and increase its diameter until it has a snug, leak-free fit. Barring that, very thick slide grease.
  3. dhbailey

    dhbailey Piano User

    Jul 28, 2009
    New Hampshire
    Just out of curiosity, is the trumpet a Bach student model?
  4. dwp63

    dwp63 Pianissimo User

    Jan 7, 2009
    Getzen super deluxe.. If the heavier grease doesn't work, I'll have the slide expanded.
    Thanks for the advice.
  5. CNYTrumpet

    CNYTrumpet Pianissimo User

    Jun 19, 2008
    It's funny you mention Bachs, both of my Bach Strads, a 37 and 43, leak out the lead pipe at the tuning slide.
  6. Vulgano Brother

    Vulgano Brother Moderator Staff Member

    Mar 23, 2006
    Parts Unknown
    The cheapo Vulgano method for expanding a slide is to gently push an old mouthpiece reciever into the slide--not as good as the tech, maybe, but cheaper and faster.
  7. Bruin

    Bruin Pianissimo User

    Mar 21, 2008
    Using lanolin or slide grease containing lanolin (Schilke?) can help. Seems to provide a nice, thicker coat of lube and wears down more slowly than thinner-based lubes.
  8. glorybe

    glorybe Piano User

    Jul 29, 2009
    Save your money and use Vaseline.
    Also keep in mind that there is a soldered joint that joins the inside tube to the outside tube. The leak may well be in that solder joint. Does that piece slide too easily or does it seem to fit just right? You may have a dent in the inside tube that is not obvious.
  9. dwp63

    dwp63 Pianissimo User

    Jan 7, 2009
    I don't think it is at the soldered joint because it still happens when I play with it with the slide extended. How about using some slide bumpers (which I call o-rings)?
    I think I will try Vulgano's suggestion with the mouthpiece next.
  10. veery715

    veery715 Utimate User

    Mar 6, 2007
    Ithaca NY
    O-rings won't do it. If they sealed tight enough you would not be able to move the slide.
    Thicker grease is the safest bet and a tech the surest.

    You can try flipping the slide upside down and see if it helps. This, while informative, won't help the problem unless you want to flip the horn to drain water. With the slide in all the way (right side up) there is a lot of grease sealing area, but as you pull it that becomes less. If the leak is about the same, then the outside of the leadpipe where it surrounds the slide is loose, likely from the slide being banged when it is nearly out.

    Last edited: Nov 13, 2009

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