Comparison of High D Whistle Bores

[Tunborough]

And are we also interested in Window Width? I imagine as defining the "openness" of the window they might both act on Q?

As far as I can tell, the window width affects tuning only as far as it affects the area of the window, and doesn't materially affect Q factor. It likely affects volume to some extent. I wouldn't be too concerned about it yet.

Here are window lengths for my contributions:

Feadog Mark 1: 5.2 mm
Freeman Blackbird: 4.15 mm
Dixon (12.8 mm bore): 4.5 mm
Freeman Mellow Dog: 4.2 mm
Clarke: 4.6 mm

[Terry McGee]

Thanks, Tunborough. I was still within my editing window for the last update, so I've added the new data points there.

[hans]

Hi Terry, is your list online?

Here some more measurements from high D whistles I own, all are cylindrical:
Bracker narrow D aluminium: 13.9mm OD, 12mm ID, 7x4mm window
Bracker standard D aluminium: 14.8mm OD, 12.8mm ID, 8x4mm window
Burke Session D brass: 14.2mm OD, 13.5mm ID, 8x4.5mm window
Löfgren D aluminium: 15.8mm OD, 12.8mm ID, 7.9x4.5mm window
Overton D aluminium: 15.7mm OD, 12.8mm ID, 8.8x5.3mm window
Reyburn Session D brass: 14.5mm OD, 12.5mm ID, 8x4mm window

[Sirchronique]

The sense that ornaments tend to be more bubbly or pronounced as the bore gets narrower is also something noteworthy to discussions relating to bore size, imo. They certainly feel faster to play, as far as the response to finger articulation is concerned.

I’ve played whistles whose characteristics defy what is typically associated with specific bore sizes in regards to other aspects of how they play, such as volume, octave transition, etc… but I haven’t played a narrow bore whistle that doesn’t produce the expected outcome in regards to finger articulation- cuts, rolls, etc.

[Terry McGee]

Hi Terry, is your list online?

Here some more measurements from high D whistles I own, all are cylindrical:
Bracker narrow D aluminium: 13.9mm OD, 12mm ID, 7x4mm window
Bracker standard D aluminium: 14.8mm OD, 12.8mm ID, 8x4mm window
Burke Session D brass: 14.2mm OD, 13.5mm ID, 8x4.5mm window
Löfgren D aluminium: 15.8mm OD, 12.8mm ID, 7.9x4.5mm window
Overton D aluminium: 15.7mm OD, 12.8mm ID, 8.8x5.3mm window
Reyburn Session D brass: 14.5mm OD, 12.5mm ID, 8x4mm window

Hi Hans, good to see you around again!
It's being assembled in this topic. I'll add your contributions and the updated list will appear below.

[Terry McGee]

Adding new data from Hans....
----------------------------------------------
NOTES:
Entries take the general form: Brand and Model Name (Materials employed), "tunable" or "fixed", (Bore diameter x Bell-to-blade length) [Window Length]
Because of the significant differences between them, Cylindrical Whistles, Untunable Tapered Whistles, and Tunable Tapered Whistles are listed separately.
Metric and Imperial measurements might be included, eg: Generation (Poly head, brass or nickel body) (0.46", 11.9mm x 10.48", 266mm)
References to Bracker can be traced to discussions at: viewtopic.php?f=1&t=84789
Whistles are listed in order of bore size. In order to help identify clusters and gaps, a single dash identifies any unpopulated 0.1mm (~0.004") increment.
Also included in the list are the standard sizes of K&S thin walled tubing, eg: 7/16" bore tubing (11.1mm)
Please feel free to advise any additional information about these or other instruments.

----------------------------------------------
CYLINDRICAL WHISTLES

Susato Kildare, Very Small Bore (ABS) High D, tunable (0.40", 10mm)
-
-
-
-
-
-
-
-
Reyburn [narrow bore?] D (10.9mm)
-
7/16" bore tubing (11.1mm)
Clare 2 piece (11.2mm)
-
-
[Bracker very narrow] Susato Kildare (11.5mm)
Jos. Morneault High D in Rosewood, tunable (0.45", 11.5mm)
-
Killarney (Brass head & tube, poly stopper and cover), tunable, (11.7 x 270mm) [4mm]
Susato Kildare Small Bore (ABS) High D, tunable (0.46", 11.8mm)
15/32" bore tubing (11.9mm)
Generation (Poly head, brass or nickel body) (0.46", 11.9mm x 10.48", 266mm) [5.1mm]
The Dannan Causeway (Poly head, brass body) (0.46", 11.9mm)
Feadog Mk 1 (Poly head, brass body) (12.0mm) [5.2mm]
Bracker narrow D aluminium: 13.9mm OD, 12mm ID, 7x4mm window
Burke Brass, Narrow Bore High D, tunable (0.47", 12mm)
Jerry Freeman Blackbird, (12.0 mm) [4.15 mm]
Tony Dixon (not sure what model), (12.0 mm)
-
Milligan (12.2mm)
Goldie (12.3mm)
Kerry Songbird (12.3mm)
MacManus (12.3mm)
OZ Delrin Vizor (12.3mm)
Reyburn high D (12.3 mm)
-
Reyburn Session D brass: 14.5mm OD, 12.5mm ID, 8x4mm window
Silkstone D+, aluminium (12.6mm, 1/2" internal, 15.6mm external)
1/2" bore tubing (12.7mm)
O'Brien 3-pice High D in Granadillo, tunable (0.5", 12.7mm)
McManus High D in Blackwood, tunable (0.50", 12.7mm)
Bracker standard D aluminium: 14.8mm OD, 12.8mm ID, 8x4mm window
Dixon Cupro-nickel (Delrin head) (12.8 mm bore) [4.5 mm]
Alex Dewilde, Brass head with plastic fipple High D, tunable (0.50", 12.8 mm)
Löfgren D aluminium: 15.8mm OD, 12.8mm ID, 7.9x4.5mm window
Overton D aluminium: 15.7mm OD, 12.8mm ID, 8.8x5.3mm window
Setanta, Brass head and fipple High D, tunable (0.50", 12.8mm)
-
[Bracker mid range] (13.0mm)
-
-
Kerry Cobre (13.3mm)
-
17/32" bore tubing (13.5mm)
Burke Session D brass: 14.2mm OD, 13.5mm ID, 8x4.5mm window
Walton's Mellow D (13.5mm) [5.5mm?]
Jerry Freeman Mellow Dog, (13.56 mm) {uses a newer Feadog head?} [4.2 mm]
-
-
-
Tilbury Aluminum D (14.0mm)
-
-
9/16" bore tubing (14.3mm)
Burke Wide Bore (14.3mm)
-
[Bracker very wide] 14.5
-
-
-
-
19/32" bore tubing (15mm)
-
Kerry Custom/MacManus (15.2mm)
-
-
-
-
-
-
5/8" bore tubing (15.9mm)
Kerry Busker Aluminum D (16.0 mm)

-----------------------------------

TAPERED WHISTLES, UNTUNABLE
Clarke D, tinplate, at sounding blade: 15.3 mm; 51.5 mm down (bottom of logo): 14.9 mm; 88 mm down (between the gold lines): 13.8 mm; 265 mm down (foot): 9.2 mm [4.6 mm]

-----------------------------------

TAPERED WHISTLES, TUNABLE
P.G. Bleazey High D in Mopane, tunable (0.37", 9.3mm at foot; 0.50", 12.8mm at middle joint)

[Terry McGee]

Adding the Clarke Sweetone (at bottom)....
----------------------------------------------
NOTES:
Entries take the general form: Brand and Model Name (Materials employed), "tunable" or "fixed", (Bore diameter x Bell-to-blade length) [Window Length]
Because of the significant differences between them, Cylindrical Whistles, Untunable Tapered Whistles, and Tunable Tapered Whistles are listed separately.
Metric and Imperial measurements might be included, eg: Generation (Poly head, brass or nickel body) (0.46", 11.9mm x 10.48", 266mm)
References to Bracker can be traced to discussions at: viewtopic.php?f=1&t=84789
Whistles are listed in order of bore size. In order to help identify clusters and gaps, a single dash identifies any unpopulated 0.1mm (~0.004") increment.
Also included in the list are the standard sizes of K&S thin walled tubing, eg: 7/16" bore tubing (11.1mm)
Please feel free to advise any additional information about these or other instruments.

----------------------------------------------
CYLINDRICAL WHISTLES

Susato Kildare, Very Small Bore (ABS) High D, tunable (0.40", 10mm)
-
-
-
-
-
-
-
-
Reyburn [narrow bore?] D (10.9mm)
-
7/16" bore tubing (11.1mm)
Clare 2 piece (11.2mm)
-
-
[Bracker very narrow] Susato Kildare (11.5mm)
Jos. Morneault High D in Rosewood, tunable (0.45", 11.5mm)
-
Killarney (Brass head & tube, poly stopper and cover), tunable, (11.7 x 270mm) [4mm]
Susato Kildare Small Bore (ABS) High D, tunable (0.46", 11.8mm)
15/32" bore tubing (11.9mm)
Generation (Poly head, brass or nickel body) (0.46", 11.9mm x 10.48", 266mm) [5.1mm]
The Dannan Causeway (Poly head, brass body) (0.46", 11.9mm)
Feadog Mk 1 (Poly head, brass body) (12.0mm) [5.2mm]
Bracker narrow D aluminium: 13.9mm OD, 12mm ID, 7x4mm window
Burke Brass, Narrow Bore High D, tunable (0.47", 12mm)
Jerry Freeman Blackbird, (12.0 mm) [4.15 mm]
Tony Dixon (not sure what model), (12.0 mm)
-
Milligan (12.2mm)
Goldie (12.3mm)
Kerry Songbird (12.3mm)
MacManus (12.3mm)
OZ Delrin Vizor (12.3mm)
Reyburn high D (12.3 mm)
-
Reyburn Session D brass: 14.5mm OD, 12.5mm ID, 8x4mm window
Silkstone D+, aluminium (12.6mm, 1/2" internal, 15.6mm external)
1/2" bore tubing (12.7mm)
O'Brien 3-pice High D in Granadillo, tunable (0.5", 12.7mm)
McManus High D in Blackwood, tunable (0.50", 12.7mm)
Bracker standard D aluminium: 14.8mm OD, 12.8mm ID, 8x4mm window
Dixon Cupro-nickel (Delrin head) (12.8 mm bore) [4.5 mm]
Alex Dewilde, Brass head with plastic fipple High D, tunable (0.50", 12.8 mm)
Löfgren D aluminium: 15.8mm OD, 12.8mm ID, 7.9x4.5mm window
Overton D aluminium: 15.7mm OD, 12.8mm ID, 8.8x5.3mm window
Setanta, Brass head and fipple High D, tunable (0.50", 12.8mm)
-
[Bracker mid range] (13.0mm)
-
-
Kerry Cobre (13.3mm)
-
17/32" bore tubing (13.5mm)
Burke Session D brass: 14.2mm OD, 13.5mm ID, 8x4.5mm window
Walton's Mellow D (13.5mm) [5.5mm?]
Jerry Freeman Mellow Dog, (13.56 mm) {uses a newer Feadog head?} [4.2 mm]
-
-
-
Tilbury Aluminum D (14.0mm)
-
-
9/16" bore tubing (14.3mm)
Burke Wide Bore (14.3mm)
-
[Bracker very wide] 14.5
-
-
-
-
19/32" bore tubing (15mm)
-
Kerry Custom/MacManus (15.2mm)
-
-
-
-
-
-
5/8" bore tubing (15.9mm)
Kerry Busker Aluminum D (16.0 mm)

-----------------------------------

TAPERED WHISTLES, UNTUNABLE
Clarke D, tinplate, at sounding blade: 15.3 mm; 51.5 mm down (bottom of logo): 14.9 mm; 88 mm down (between the gold lines): 13.8 mm; 265 mm down (foot): 9.2 mm [4.6 mm]

-----------------------------------

TAPERED WHISTLES, TUNABLE
P.G. Bleazey High D in Mopane, tunable (0.37", 9.3mm at foot; 0.50", 12.8mm at middle joint)
Clarke Sweetone D, rolled tinplate with poly head, 15.7mm where tube enters head, 9.2mm at foot. Blade to bell 259mm. Window 7.8 by 4.75mm