Can somebody tell me
If I have make two whistles with the same length but different bore diameters do the tone holes on the smaller bore move up since the node on the fundamental moves up?
I’m just utterly confused about bore sizes.
Help
Please
Sean
Well, I’ve noticed that the holes on a conical bore whistle are sized and spaced a bit differently than on a cylindrical bore, but that’s about all I can tell you…
Thanks
Whistles do not work by physics. They work by magic… 
And in some cases they physicaly don’t work
Here’s a link to a page explaining how fipples work: http://ourworld.compuserve.com/homepages/kadima/fipple.htm
This link is to a spreadsheet that calculates hole placement. I have verified it’s accuracy building 4 whistles. http://www.dbeweb.com/kayak/Downloads/recorder11.exe
On the above spreadsheet, you can vary the finger hole radius values and observe how the finger placement changes. The sheet is only for cylindrical bores and not tapered bores.
Gary