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Thread: John Packer Valves

  1. John Packer Valves

    I have a simple question on My valves. They have been bouncy and the horn is brand new. I bought the new Steven mead springs because I thought it would make the bounce stop, but it stayed almost about the same. Did see a little progress. Any tips on what could be happening?

  2. Hmmm. "Bouncy"? I have a new JP horn as well. I haven't noticed anything particular about the valves. To me they just seem about what valves should feel like. Full disclosure, this is my first ever piston valve instrument. Still, what I feel at the keytops doesn't strike me as noteworthy one way or another. And if you replaced the springs with SM springs (lite or regular?) and that has not fixed your issue. Well ... I don't know, it seems to support a thinking that maybe the valves are fine. What instrument are you coming to the JP from?
    John Packer JP274 MKII S

  3. I have the John Packer 374 Sterling.
    I used the Steven mead Original

  4. #4
    I too am curious with what "bouncy" means. Could you make a video of the issue?

    I would say that, that the original Mead springs were a bit too strong on the JP274 that I had. I settled with the Mead springs light. Not sure how different is the valve cluster between the 374 and 274.
    "Never over complicate things. Accept "bad" days. Always enjoy yourself when playing, love the sound we can make on our instruments (because that's why we all started playing the Euph)"

    Euph: Yamaha 642II Neo - 千歌音
    Mouthpiece: K&G 4D, Denis Wick 5AL

    https://soundcloud.com/ashsparkle_chika
    https://www.youtube.com/user/AshTSparkle/

  5. #5
    Did you buy your horn new? If not, it's possible the pad on top of the piston is no longer doing its job. Bounce is controlled by the density/etc. of the top pad in combination with the springs. In addition, valves that are sluggish will not bounce as much because they are not moving as fast on the way up and do not move as easily on rebound.

    I imagine you are aware that most valves bounce. The goal is to make the amount of bounce so little that it is not noticed and does not interfere with your playing. Strong springs help minimize bounce. It's hard to imagine that the original Mead Springs would not do the trick, so I'm fishing for reasons to explain why your valves are bouncing
    Dave Werden (ASCAP)
    Euphonium Soloist, U.S. Coast Guard Band, retired
    Adams Artist (Adams E3)
    YouTube: dwerden
    Facebook: davewerden
    Twitter: davewerden
    Instagram: davewerdeneuphonium

  6. https://share.icloud.com/photos/0wt5...8N6RCnA#Laredo

    This is a video of my valves with the springs.
    Horn is brand new and the valves are very smooth.

  7. #7
    I just saw your visitor's message, but seems like you got it uploaded!

    Okay, I see now what you mean and that definitely looks a bit off, it's even bouncing when going down! I am definitely at a loss with that!
    "Never over complicate things. Accept "bad" days. Always enjoy yourself when playing, love the sound we can make on our instruments (because that's why we all started playing the Euph)"

    Euph: Yamaha 642II Neo - 千歌音
    Mouthpiece: K&G 4D, Denis Wick 5AL

    https://soundcloud.com/ashsparkle_chika
    https://www.youtube.com/user/AshTSparkle/

  8. OMG. If this was April I would say the o.p. is having us on. That is truly bizarre. Just saying, the JP274 is $1K cheaper and doesn't have this problem :-) All the valves do this? They did this right out of the box? What brand of oil? If different from the 'Ultra Pure' synthetic supplied ... maybe an adverse interaction? When I depress the valve button I can feel the spring pushing back at all times. Is this sensation of the spring following the piston at all times present in the affected valves? The springs in my horn were greased at the factory. Chances are the SM springs have not been greased? Try that? Are the OEM springs and the new springs the same length? Just some ideas but this looks like the dealer needs to get involved, it maybe something they have seen before and are able to solve without the horn needing to be shipped again.
    John Packer JP274 MKII S

  9. #9
    Quote Originally Posted by Jherrera9415 View Post
    https://share.icloud.com/photos/0wt5...8N6RCnA#Laredo

    This is a video of my valves with the springs.
    Horn is brand new and the valves are very smooth.
    That, my friend, gives new meaning to the term "valve bounce"! That is valve bounce followed by re-bounce followed by bounce-again. Something is very, very off with that. I can only imagine a spring that is very, very light and perhaps shorter than it should be. Is the video while using the SM springs? I would most definitely contact JP and seek advice. Maybe JP put trumpet springs in there? If it is doing it with the SM springs, then that is really amazing (the not good type of amazing). I would think this can be resolved (maybe easily), but right now, your horn's valve action is unacceptable. Contact the dealer/manufacturer. Let us know the outcome, this is curious.

    Welcome to the forum, by the way!!
    John Morgan
    The U.S. Army Band (Pershing's Own) 1971-1976
    Adams E3 Custom Series Euphonium, Wessex EP-100 Dolce Euphonium, 1956 B&H Imperial Euphonium
    Adams TB1 Tenor Trombone, Yamaha YBL-822G Bass Trombone
    Wessex TE-360 Bombino Eb Tuba
    Rapid City New Horizons & Municipal Bands (Euphonium)
    Black Hills Symphony Orchestra (Bass Trombone), Powder River Symphony, Gillette, WY (Tenor Trombone)
    Black Hills Brass Quintet (Tuba)

  10. #10
    yeah, that is weird. I agree, contact the dealer and send them that video. I'm wondering if they changed the felt/cork under the valve cap to something new

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