Just joined and want to immediately show my ignorance:)
I’ve been dabbling in whistle and just purchased a Susato Kildare model, a two-piece tunable whistle, which I’m not used to. When I separate the two pieces, the longer piece has a threaded end but the shorter piece does not. I’m curious why the threaded end?
Thanks for any info. I look forward to enjoying this forum.
The threads are there just to help ensure a good air seal between the joints. If you look closely, you’ll see that one of those “ridges” is actually an embedded rubber O-ring, which is what really makes the seal.
Susato changed this design around 2006. Before then, the body joint was a smooth tenon with 1 or 2 O-rings, depending on the size of the whistle.
That’s for tuning - extend the body outwards to make it flatter, slide it inwards to make it sharper. this helps fine-tuning to play with others.
It seems obvious to some, but I have had to explain it enough times to not take it for granted. e.g. “Why is this expensive whistle so horribly sharp?” when the player had assumed that the joint was purely decorative and should be fully closed.