 The Clarinet BBoard
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Author: none
Date: 2012-01-17 20:36
The needle spring for the left-hand F key on a Yamaha 34 seems to be failing.
When that key is depressed, it seems as if the pad is sticking in the tone hole. But, depressing the right-hand F key shows that this isn't the case.
In suspecting the cause to be the spring, I accessed it by removing the F and adjacent keys. The tension seemed fine on the spring, but it looked little short against its contact post.
That's also the case for other needle springs that work just fine on this clarinet.
I, nevertheless, bent the spring a little more and tightened the post through which it is "threaded" as much as I could to still line up the screws.
Replacing the key on the clarinet has left me back where I was before taking the keys off.
Any suggestions as to what I should be doing to solve this problem?
janeandgary@rogers.com
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Author: tictactux ★2017
Date: 2012-01-17 20:45
Normally the LH F/C key, when unsprung, should freely move by the weight of its touchpiece when you tilt the joint sideways and forth and back. If that isn't the case, then the pivot screws are too tight (or bent) and the key will bind. Its spring tension should just be sufficient to keep the LH touchpiece up (ie. open), as the "main" spring, attached to the RH touchpiece, will lift the pad off the tone hole.
If the key moves freely, then the lever and the corresponding nose of the key/RH touchpiec assembly are sticking together somehow.
--
Ben
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Author: Chris P
Date: 2012-01-17 20:50
Check the silencing material as sometimes the underlever from the LH F/C lever can chew into the silencing material glued on the underside of the overlever on the RH F/C key.
Buffet clarinets had this problem with the thumb ring as they used that synthetic cork (some kind of high density foam) and the underlever tip (connected to the thumb ring) chewed through the silencing material and into the glue causing the LH1 ring to remain closed when the left thumb and forefinger were off.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
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Author: none
Date: 2012-01-18 02:16
Thanks Ben and Chris,
it's not a silencing material problem, but maybe a bent screw(s) problem.
What if one or both posts are not perpendicular to the joint. Or..., is it the needle?
I can play without hinging the needle and fastening the key with screws or leaving the key unhinged but screwing the key in place.
Needle?
Post(s)?
Screw(s)?
Your input, as before, is greatly welcome, gentlemen.
Gary
janeandgary@rogers.com
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Author: clarnibass
Date: 2012-01-18 04:45
If you play F or C with the right pinky F/C key you have no problem, right?
If you play either or those notes with the left pinky F/C lever, it gets stuck i.e. doesn't spring back?
So... what happens when you hold the right pinky F/C key closed and then press the left pinky F/C lever? Does it spring back like it should? Does it get stuck?
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Author: none
Date: 2012-01-22 02:33
An adjustment of the post rectified the problem.
Thanks to all contributors.
janeandgary@rogers.com
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