 The Clarinet BBoard
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Author: glcdurham
Date: 2014-12-09 00:32
I have just bought a Noblet Artist. It was in its case and only split into two pieces.
In fact the case dose not allow it to be stored in five pieces like most clarinets.
The Bell to lower segment cork is Teflon coated as is the Tuning barrel to upper
segment cork. The Upper Barrel to lower barrel is like a gramophone face around
the circumference of course and has cork on it. Does anyone know anything about
this.
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Author: kdk ★2017
Date: 2014-12-09 01:27
What is "upper barrel to lower barrel?" Does the clarinet have one barrel or two? Do you mean the upper and lower ends of the barrel? What do you mean by (forgive me - I think this is a language issue between the U.S. and the U.K.) a gramophone face? I'm easily old enough to know what a gramophone is, but what does it's face look like? Do you mean the cone-shaped horn that the RCA Victor dog sat listening to to hear "his master's voice?"
As for the Teflon-coated corks, what would you replace them with if (when) they wear out?
Karl
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Author: Chris P
Date: 2014-12-09 01:41
Someone probably wrapped PTFE tape around the tenon corks to add more bulk to them due to the corks having compressed from being assembled for so long. The gramophone grooves you describe are probably due to the ridges in the cork slot applying more pressure to the tenon cork at the peaks and less pressure at the troughs, so making them look ridged.
I'd strongly suggest you bin the case that only allows the clarinet to be kept in two halves as this is bad for the tenon corks, the tenos and the sockets as water will collect in them which will cause the tenon corks to harden and at worst cause the tenons to bind solid in their sockets.
So the best thing to do is buy a new case that keeps all the joints separated and then have all the tenon corks replaced.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
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Author: glcdurham
Date: 2014-12-09 03:46
I should Know better as I've used the term segment which I believe is correct and then changed to using the word barrel, should read segment.
Thanks for you advice Chris P. The upper segment and lower segment to Bell look as if they have been dipped in teflon or coated with it, this is not a problem as if I renew the cork it wont put teflon on it. The mid joint or upper segment to lower segment is grooved with no definite slot so the cork must be very thin. I'll have to get the vernier out and measure up. Once again thanx.
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Author: Tony F
Date: 2014-12-09 06:10
Could you post some photos? It will help us get the true picture.
Tony F.
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Author: glcdurham
Date: 2014-12-10 23:54
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After many attempts I have captured the many grooved cork joint joining the segments together. The Teflon (segment to Bell end), I think it is some kind of tape but it is like a sleeve as its fit is bang on with the cork and metal snd piece outside diameters.
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Author: tictactux ★2017
Date: 2014-12-11 01:28
the middle joint tenon looks quite normal and takes ~1.2mm thick cork. The grooves increase the surface the glue is holding on. When you see no definite slot this can also mean that the outer rim of the tenon is worn down from many assembly/disassembly cycles.
Freshly installed cork is usually a bit oversized and must be sanded down to proper dimensions.
The upper joint/barrel tenon has a metal sleeve protecting the end grain from too much moisture.
Either tenon looks just as every Noblet tenon I've seen so far. (plus a lot of other makes)
--
Ben
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Author: glcdurham
Date: 2014-12-11 02:31
Thanks for your advice Ben but I don't know if you can see the Teflon on the normal tennon. I was going to miss the Teflon out and just renew the cork and sand down to size. The teflon looks like an expensive extra.
On the grooved tenon I've ordered some cork up I think it may be only 1mm thick where can I get the, I think you said 1.2mm cork.
How can the multi-grooves in the centre tenon be worn when there is no groove like the Bell end. And the peaks of the multi grooves are sharp.
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Author: Chris P
Date: 2014-12-11 02:40
Attachment: rcprestige 001.JPG (612k)
Attachment: rcprestige 002.JPG (615k)
The tenon cork has worn through on the middle tenon showing the grooved slot beneath it, so that tenon cork will have to be replaced.
Likewise with the tenon corks wrapped in PTFE tape as that has only been wrapped around them to add more bulk to keep the joints together and prevent leaks - you don't need to add Teflon tape to a new tenon cork, but you will have to grease it to keep it supple, make it easy to assemble and also to prevent the cork drying out.
See the attachments as that's what a tenon cork should look like once fitted.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
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Author: glcdurham
Date: 2014-12-11 03:05
Thanks folks for your advice.
On the Teflon though its not the tape that plumber uses it looks specially for the job.
Over the years I must have had a dozen or so Student clarinets. Then I buy one and have not seen joints like it. Always something new round the corner,
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Author: Chris P
Date: 2014-12-11 03:15
Can you take another photo as I can't really see what's going on due to it being out of focus. I'm not having a go as I know digital cameras are a pain in the arse at the best of times, especially when you need to take a detailed photo and they focus on the background instead no matter how many times you try.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
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Author: clarnibass
Date: 2014-12-11 10:06
The photo of the tenon that is in focus looks like a normal somewhat ruined cork.
The other photos are out of focus. Maybe the camera has a Macro mode for focusing so close. If not (like a phone camera which doesn't) then it was either too close or it was too dark to focus.
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