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Re: measuring clarinet bore

Author: stevesklar
Date: 2010-11-08 16:26

Bob,
on a tapered upper joint it is normally larger at the top than the bottom.
on the lower joint it's the opposite.

on a german bore it is cylindrical in the upper joint and most of the lower joint until it just gets to the bell then it starts it's flare.

here's an old list that I have of bores - mostly just the lower bore of the upper joint but some both the top and bottom.
http://www.clarinetperfection.com/clbore.htm#bore

I then started using a gauging tool to measure the entire length of the bores to compare multiple vintage R13s and such.

as an graph example, Stephen Fox has done some analysis with graphs shown here
http://www.sfoxclarinets.com/BenclartI.html

here's more info. with a representation of the decreasing 3 cylinder design of the upper joint of the R13
<www.woodwindcourse.co.uk/user/image/clarinet_bore_design.doc>

as to your blown out question. I had a R13 which was arguably blown out. Dried up wood and ovalized bore. horrible player. Went through a complete restoration including reoiling and it came back to shape and in the end was very nice and compared quite equally to my other 1955 R13. But then i didn't do it as an experiment of blown out or anything.

==========
Stephen Sklar
My YouTube Channel of Clarinet Information

Post Edited (2010-11-08 16:26)

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