 The Clarinet BBoard
|
Author: ito
Date: 2010-03-30 03:26
Hi,i am thinking of ordering a custom barrel from mr Clark w fobes but i need to let mr clark know more information about the layout,like the kind of bore,the diameter of the bore so that he can actually get it done and send over to me
Do anyone know what kind of information about the boosey and hawkes imperial 926 bore?do tell me the information so that i can get the barrel done..
|
|
Reply To Message
|
|
Author: Caroline Smale
Date: 2010-03-30 11:53
The normal barrel on a 926 has a diameter of 15.06mm and is absolutely parallel. The standard length supplied was always 67mm but B&H did make some other lengths.
The barrel is designed to work with the 926 upper joint which is also fully parallel and again has diameter of 15.06mm.
|
|
Reply To Message
|
|
Author: ito
Date: 2010-03-30 12:15
Hi Norman Smale
The 67mm original barrel,even at its long length,the clarinet tend to still play sharp,so would ordering a 68/69mm barrel a better choice or stay at 67?because i might be ordering the barrel from mr clark w fobes by this week,hope to get some help here:)
|
|
Reply To Message
|
|
Author: Caroline Smale
Date: 2010-03-30 13:56
B&H designed their 926 (and 1010) clarinets to play in tune (A440 at 68 F to be precise!!) with the barrel pulled out 1mm - this allowed latitude for picking up a cold instrument e.g. Bb/A swap mid music, and still be able to get up to pitch.
They probably also assumed player would be using appropriate B&H mouthpieces.
Peter Eaton tunes his clarinets to work in same way.
Obviously the exact pitch any individual plays at depends on other personal characteristics as well but above is the "official" position.
Unless you are noticeably sharp when pulled out and up to temp I would think 67 a good bet, you can always add a tuning ring to gain a mm but can't hack length off that easily.
|
|
Reply To Message
|
|
Author: ito
Date: 2010-03-30 14:30
Hi Norman Smale,thanks for the clarification,one last question from me,sorry for asking to many questions.
What diameter of the top part and also the bottom part,because i am scare that the barrel might not fit on the clarinet well..so if i can know what diameter for the top and bottom will be nice,now that i know the bore diameter,the last information i need will be the top hole diameter and the bottom hole diameter for the barrel when i am ordering it,thanks again
|
|
Reply To Message
|
|
Author: Caroline Smale
Date: 2010-03-30 16:12
Hi,
have measured 2 of my barrels and dimensions are as follows
Top 22.5 mm (this is pretty much now an accepted standard for most clarinets)
Lower 23.70/23.75 mm with depth of 19.3/19.4 mm
For utmost accuracy you can measure the actual tenon on your clarinet using accurate caliper guage and measuring diameter of both the outer and inner shoulders at at least 3 places around the circumference (in case of slight ovality, which is not uncommon).
The diameter of barrel socket should be no more than 0.1 mm (.004") larger than the bigest measurement of tenon.
Similarly the depth of socket should be about 0.15-0.2 mm (.006"-.010") greater than the length of your tenon.
For the record the actual measured diameter of bores were 15.08- 15.1mm pretty close to spec.
|
|
Reply To Message
|
|
The Clarinet Pages
|
 |
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
