The F flutes are of two different types. The top one is a newly prototyped model I am calling my "Irish Style" F flute and features a head joint bore of 18.1mm, tapering down to 12.75mm at the foot. This flute supports the first two octaves well for a rich tone. The 3rd octave is totally missing!
The bottom flute is one of my Requintas intended for Galician music, playing usually an octave above the Bb Gaita. This flute has a head joint bore of 16.25mm and tapers down to 10.75mm at the foot. The first octave is present but not very impressive. Where this flute lives musically is from A in the 2nd octave to C in the 3rd octave. French simple system military flutes of the Napoleonic era (the Requintas were derived from these) are very similar. American flutes by Firth et al have a slightly larger bore in the head joint (above 17mm) and do not respond as well in the 3rd octave. The middle joint of this flute was reamed out using a Napoleonic-era Belgian made bayonet!
Note that its sounding length of the Requinta is slightly longer than the larger bored "Irish Style" flute. The smaller bore generally "speeds up" the vibrations raising the pitch thus the flute has to be longer to play at the same pitch! I thought that some would find this interesting. It also points out the problems of going by sounding length alone when assessing an online flute purchase!
Casey
