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Convertible Sousaphone
Posted: Fri May 02, 2014 6:22 pm
by bigtubby
A BBb helicon has been on my wishlist for some time. Recently a 4 valve King raincatcher came along which was so nice that I couldn't pass it up (thanks Mark!). I found a King bell/Miraphone stack that had all of the right dimensions to graft it onto the raincatcher (thanks Dan!).
After fabricating a tenon to fit the raincatcher, voilĂ , a helicatcher. er, rainicon?
The nice thing is that this all worked with zero modifications to the raincatcher (one of the prerequisite for the project).

Re: Convertible Sousaphone
Posted: Fri May 02, 2014 7:05 pm
by tofu
That's pretty nifty - especially since you kept the raincatcher all original. My only thought would be that all the BBb helicons I've seen (including my current one) have a pretty hefty brace for bell support so you might not want to leave the helicon bell section on when you're not using it.
Re: Convertible Sousaphone
Posted: Fri May 02, 2014 7:26 pm
by Dan Schultz
tofu wrote:..... My only thought would be that all the BBb helicons I've seen (including my current one) have a pretty hefty brace for bell support so you might not want to leave the helicon bell section on when you're not using it.
I do not have a 'brace' on my custom helicon, either. I got around the hazard of the bell falling off by using bell screws with pilots on them that engage holes in the bell tenon. I told Tom about this feature and assume he has done the same thing with his bell. My bell gets 'thrashed around' pretty good at Volksfest and hasn't budged.
Re: Convertible Sousaphone
Posted: Fri May 02, 2014 7:37 pm
by bigtubby
TubaTinker wrote:tofu wrote:..... My only thought would be that all the BBb helicons I've seen (including my current one) have a pretty hefty brace for bell support so you might not want to leave the helicon bell section on when you're not using it.
I do not have a 'brace' on my custom helicon, either. I got around the hazard of the bell falling off by using bell screws with pilots on them that engage holes in the bell tenon. I told Tom about this feature and assume he has done the same thing with his bell. My bell gets 'thrashed around' pretty good at Volksfest and hasn't budged.
Yes Dan I did that and appreciate the suggestion. My original idea had been to solder a brace to the stack and fabricate a sort of half-ferrule, glue part of a leather guitar strap inside it and simply let it rest on the 2nd branch. Your idea is much simpler and seems very solid.
Thanks again!
Re: Convertible Sousaphone
Posted: Fri May 02, 2014 8:13 pm
by imperialbari
How is the balance?
Front heavy?
Klaus
Re: Convertible Sousaphone
Posted: Fri May 02, 2014 10:20 pm
by bigtubby
imperialbari wrote:How is the balance?
Front heavy?
Klaus
Not too hateful. I don't think it's nearly as bad as this ...
Re: Convertible Sousaphone
Posted: Fri May 02, 2014 11:05 pm
by imperialbari
bigtubby wrote:Not too hateful.
?
Re: Convertible Sousaphone
Posted: Tue May 06, 2014 10:08 am
by bigtubby
imperialbari wrote:bigtubby wrote:Not too hateful.
?
Meaning "It isn't too awful to play". The photo was to imply that I would rather carry it than a 3 valve compensator.
It sits more upright than the photo (I need to move the pad forward).
Re: Convertible Sousaphone
Posted: Tue May 06, 2014 11:53 am
by Tubajug
Very cool! I love the look of raincatchers! Helicons are growing on me too...
Re: Convertible Sousaphone
Posted: Tue May 06, 2014 4:11 pm
by bigtubby
Tubajug wrote:Very cool! I love the look of raincatchers! Helicons are growing on me too...
It plays really well in the original (raincatcher) configuration, haven't played it enough as a helicon to get a feel.
In raincatcher configuration, the guitar player I've been working with calls it a "Dr. Seussaphone" ...

Re: Convertible Sousaphone
Posted: Sun May 11, 2014 10:48 am
by Tuba Guy
All of the sousaphones I've ever gone near have been convertibles. I mean, all you have to do is unscrew 3 screws and you can easily take the top off
Re: Convertible Sousaphone
Posted: Sun May 11, 2014 10:58 am
by Dan Schultz
Tuba Guy wrote:All of the sousaphones I've ever gone near have been convertibles. I mean, all you have to do is unscrew 3 screws and you can easily take the top off
Yeah. But.... they play in 'B' when you do that!