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Re: Upper join G#-A linkages

Author: Chris P
Date: 2017-07-10 16:21

If the RH1 fingerplate isn't opening enough, that can also have an effect on the venting of the Bb and C keys on the top joint.

They should open to 2mm and the RH1 fingerplate should open a fair amount more plus have some lost motion (double action or free play) between it and the con bar (the bar on the side of the top joint) and also a bit of free play once the Bb and C keys are open.

So when closing RH1 slowly, you should feel two distinct moments where there's some lost motion as it starts to move and just before the pad closes. The upper end of the con bar should also not make contact with the top joint.

I set up the top joint main action first, then set the con bar in relation to the RH1 linkage so there's a tiny gap between them. Then I fit the pad in the RH1 fingerplate so it's the correct thickness taking into account the amount of shellac and the amount of free play left in the con bar when RH1 is held down. Then it's a case of setting the adjusting screw on the F#-G# link once the RH1 pad is in and it's all regulating well.

On some oboes I have to alter the shape of the various G# linkage pieces to get more venting on the G# pad and make it work with the other keys linked to it. Some oboes are easier than others depending on the shapes and lengths of the linkages.

Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.

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