John Robinson Posted January 27, 2008 Share Posted January 27, 2008 I should be very grateful for any comments on this idea for an improved design of pallet in which the conventional wooden pallet is replaced by a strip of spring steel with a felt backing to seal the opening to the channel when closed. A refinement to this opening is a 'V'-shaped extension at the end adjacent to the tracker. Its operation is as follows: 1. The pallet is closed and the spring holds the pallet firmly against the opening. 2. Slight pressure on the key pulls down end of pallet, which begins to bend. At this stage, the pallet is just beginning to uncover the 'V' section of the opening, allowing a small flow of wind to pass into the channel. 3. Further movement of key causes the pallet to bend further, admitting a greater wind flow. 4. Key fully depressed: pallet fully open. (Release of the key reverses this sequence.) Because the pallet 'peels' away from the windway the force required to open the pallet, and the 'pluck', are lighter. Due to the 'V'-shape of the front of the opening, and the fact that the pallet gradually curves away from the opening, it should be possible to more easily control the attack and release of the note. As this design of pallet is probably of a lower mass than a conventional one, it is likely to possess lower inertia, permitting quicker response and repetition. Note that only the front quarter or so of the pallet (the end nearest to the tracker) needs to be flexible: the remainder need not be so. To summarise, the innovations I have in mind are: (i) a spring steel pallet, being wholly or partially flexible; (ii) a 'V'-section to the proximal end of the opening to the channel. Unfortunately, I do not have the facilities to try this out in practice but, intuitively, I imagine that it could work successfully. I should be most grateful for any comments or criticisms, especially from those familiar with organ construction or repair. I hope this works: I have never tried to post images on here before! John Link to comment Share on other sites More sharing options...
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