F.S. Shires bass trombone "C" tuning crook

ttf_tromprof · Post by **ttf_tromprof** » Tue Sep 05, 2017 11:39 am

I am selling a used Shires yellow brass "C" style tuning crook. The crook is in overall good condition with the following small issues. The lacquer shows a bit of case wear and is spotted in a few places. There are also 2 small pings near the smaller end of the bow. The pings are quite small and seem to have no effect on the sound.
$225 shipped to lower US 48.
Pics available on request.

ttf_tromprof · Post by **ttf_tromprof** » Sun Sep 10, 2017 6:57 pm

Still available.

ttf_robcat2075 · Post by **ttf_robcat2075** » Sun Sep 10, 2017 8:30 pm

I'm just curious about what "C style" is.

ttf_mr.deacon · Post by **ttf_mr.deacon** » Sun Sep 10, 2017 10:58 pm

C is the big modern bass trombone tuning slide. B is the smaller more compact feeling Bach 50B style tuning slide.

ttf_tromprof · Post by **ttf_tromprof** » Mon Sep 11, 2017 10:13 am

From the Shires wesite:
B: Produces a compact feel and centered sound
C: Designed for players who prefer an open feel and larger sound

I used this crook on my backup bass that had standard rotors, but when I sold it the buyer opted for a "B" crook that I had as a spare. There is a noticeable difference in the way the two models blow. My backup is now a single valve axial and the C just was too open. Worked great on the regular rotors though.

ttf_robcat2075 · Post by **ttf_robcat2075** » Tue Sep 12, 2017 9:01 am

Shires says this...

QuoteTuning slide crooks in several different tapers have been designed for each type of trombone, to meet players' different needs.

What taper are we speaking of? How can the taper of the crooks be different if they have to plug into the same two receiving tubes?

ttf_tromprof · Post by **ttf_tromprof** » Tue Sep 12, 2017 9:32 am

The C crook starts a bit bigger diameter wise than the B and ends up bigger as well.
Outer profile is the same and they are easily interchangeable.
Playing wise it is similar to changing leadpipes, the C just being bigger the bigger pipe.

ttf_robcat2075 · Post by **ttf_robcat2075** » Tue Sep 12, 2017 10:11 am

Quote from: tromprof on Sep 12, 2017, 09:32AMThe C crook starts a bit bigger diameter wise than the B and ends up bigger as well.

That sounds more like the same taper but with thinner walls?

Which one matches the bore of the horn? One of them would have to have a step going in and going out...

ttf_mr.deacon · Post by **ttf_mr.deacon** » Tue Sep 12, 2017 12:06 pm

Quote from: robcat2075 on Sep 12, 2017, 10:11AMThat sounds more like the same taper but with thinner walls?

Which one matches the bore of the horn? One of them would have to have a step going in and going out...ù
One has a slow taper the other has a fast taper. The C tuning slide is fatter in the middle than the B tuning slide.

Think of it like the difference between a Bach and a Conn bell.

ttf_tromprof · Post by **ttf_tromprof** » Fri Sep 15, 2017 5:44 am

SOLD