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Consider using a valve section from a King Sousa instead of what you have. A BBb Tuba, which should be about 19ft long if I remember correctly, I think would sound strange with a bore size so small.

You might know a guy who has a King Sousa section lying around...

What do you think about making it in (F)? about 12 feet long.. You would need to add less tubing ( This is just my Idea)
What ever you do will be fine & FUN!! and thats what its all about.
Harvs Happy Horns..

I don't know what you have, but I'm sure it didn't come out of the Getzen factory that way. Do you have pix to post?

All G baritone bugles are/were made from the major components of Bb baritones.

Prior to the 1963 fire, Getzen built a "bass-baritone" with the bell and branches of a British-type baritone and a .460" bore. After the fire, they produced the Titleist bass-baritone, made with American baritone components and a .560" bore.

These bugles were single-piston models, which were made more chromatic with a slip slide or rotary attachment. A few 2-piston Titleists were produced in the early 80s.

The Getzen clan, d/b/a Allied, then produced .570" bore 2 and 3 piston G baritones for DEG (Dynasty). After a huge Family Feud, this agreement was terminated in 1993 and the few remaining instruments in production were re-branded and sold as Getzens.

So there is nothing unique about the components of G bugles that would benefit your project.

I do know of ONE 3-rotary valve G baritone bugle. It was fabricated by Roc Haines, a tech from the Houston area. The components all came from Olds Ultratone bugles. He sold it on eBay about a decade ago.

If these rotaries are the old single-bearing type, held together with a ring clip, they leak like sieves and will jam with no hope for salvation. And they are only trumpet (.460) bore, certainly not suitable for a bass instrument.

Speed of sound in body temperature moist air is around 1160 feet per second. Fundamental note of a G baritone bugle would be 49hz. Divide the speed of sound by 2 (because a pedal tone would be half a wave) and then divide 49 hz by that. Take the inverse and you should have the length, in a pure cylindrical tube. Because there's a bell that tapers on it it's a bit shorter, maybe 10%. So a G baritone bugle would be a little less than 11.8 feet, I'd say something like 10.6 feet. So it sounds to me like your measurement is right on. Err on the long side with the tubing you're adding and you can always cut a little more. The chances that you'll end up with a satisfactory instrument, though, are pretty remote! If it were me, I'd save my time and save my money for something where all the bugs have already been worked out!

So you're the one who snagged that!

I've built something like what you're imagining:

viewtopic.php?f=2&t=43491

I would be happy to help out; we can probably swap your valves for something else; fair trade. Those are really too small for a BBb anything - it's a smaller bore than your mouthpiece shank! Even if the attached valve are normal at .562, your still going to have an instrument stuffier than blowing into the back end of a muskox.

PM me if insterested. It's an afordable project if you provide that many parts to begin with. And mine's a blast to play, and practical for several uses.

J.c.S.

The pic is a pre-fire Getzen DeLuxe bass-baritone. The piston bore is .460.

The rotaries are a few years newer, they are the Titleist model. Their .468 bodies were sourced from Italy, in Elkhorn they added the trigger mech and fitted them with .460 slide tubes.

This bugle originally had a longer loop on the piston, which lowered the fundamental a fourth. Single-piston bugles keyed this way were used by competitive drumcorps until the late 60s.

This bugle originally used a slipslide to obtain the chromatics.

It was converted after a 1968 rule change. This one uses conversion kit parts from the manufacturer. The piston now is a full step. The longer rotaries, with the slide pulled another 3/4", will produce a half step. The shorter rotary belongs to a soprano bugle.

Oops - missed the kit setup on the piston. You're right, older small bore. Which would work even more poorly.