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Re: automatic oboe adjustment

Author: Chris P
Date: 2011-08-04 09:20

Hi Gerry, it works like a sax 8ve mechanism and there are only two springs (both on the right side of the photo where the 2nd 8ve key would normally be) - the stronger master spring which keeps the rocker held down (and both pads closed) and a weaker spring keeping the lower 8ve pad closed.

As soon as the 8ve key is pressed (and no other fingers are down), the upper 8ve vent pad will open and as soon as any pressure is applied to the upper 8ve vent pad (via the linkage arm from LH3), the lower 8ve vent pad opens. The venting of the 8ve vent pads is controlled by the amount of movement in the 8ve key (the thumb touch) and that also allows to put some safety double action in there as well.

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

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