Chanter - technical question

[Pyper]

First of all, excuse me for my ignorance on this field. I was playing with some mathematical background of chanter and reach to the point where I need some clarifications.

Chanter is regarded to be one-end-closed wind instrument, right? So... the length of such pipe should be 1/4 of tone wavelength. If the chanter is G tuned (around 400 Hz) it should be less then 11 inch long. But as much I look at it, it's more then 17 inch long. (the part from reed to bell)

Where I'm wrong?

11 inches sounds about right, if you measure from the bottom of the reed seat to the top of the tone holes. There are a few inches of pipe that extend down past the tone holes.

Keep in mind the chanter is tapered from a few mm at the reed end to big enough to stick one's thumb into at the other end.

(currently fingering a ruler) the distance between the low A hole and the high A hole is about 9 inches.

[highland mafia]

Well I would guess and this is just a guess. That the distance the holes are from the reed is more important for pitch then the length of the chanter itself.. If I put tape on my F for example I thereby more or less move the hole further from the reed. And this causes my F to flatten. As far as pitch goes most modern chanters are tuned to about the 480 range.. My chanter sits nicely at 479/480 ish during the winter and probally gets as high as 486! during the summer games.. But I shot for 482 to 484.