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Re: no fiberglass sousaphones in marching bands anymore

Postby 58mark » Thu Aug 10, 2017 8:42 pm

there is a guy in Dallas making carbon fiber trombones. Maybe sousas are next
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Re: no fiberglass sousaphones in marching bands anymore

Postby Donn » Thu Aug 10, 2017 9:28 pm

bloke wrote:I feel certain that the 4th partial would respond much better, were these instruments fabricated of carbon-fiber, rather than fiberglass.

:lol:
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Re: no fiberglass sousaphones in marching bands anymore

Postby David Richoux » Thu Aug 10, 2017 10:13 pm

iiipopes wrote:The real reason: they aren't fiberglass anymore. The bells are plastic or resin. Truth in advertising.


Plain "plastic" is usually too fragile for instrument use - there is usually some sort of stranded patterned or random glass fiber reinforcement in the material to give some strength. "Fiberglass" is just a trade name for glass fiber reinforced thermosetting resin plastic.

I think the next logical step will be molded carbon fiber reinforced plastic - much stronger by weight than fiberglass, so the wall thickness can be much thinner. Once the makers get a handle on how to mass produce it, and the price comes down a bit it will be more common.
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Re: no fiberglass sousaphones in marching bands anymore

Postby 58mark » Thu Aug 10, 2017 10:15 pm

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Re: no fiberglass sousaphones in marching bands anymore

Postby bloke » Thu Aug 10, 2017 10:55 pm

old school (I dunno about "new school"...)

- Conn 36K, 22K, and King blah-blah-blah-blah-# sousaphones were made of fiberglass (yeah...fibers).

- The bell FLAIRS of the 36K and King are made of something very similar to PVC, as PVC glue is the ONLY glue I've found that repairs them when they crack or when a chunk breaks off.

- The bell FLAIRS of the older 22K fiberglass sousaphones were actually FIBERGLASS...but (I suspect) later were also made of the PVC-like material.

These instruments were genuinely LIGHTWEIGHT.

NEW SCHOOL (bloke's guesses)
JUPITER "white" sousaphones, do not seem (??) to be made of fiberglass. When they break, I see no fibers, and they break apart in chunks (again: no fibers seen by me). Further Jupiter "white" sousaphones are NOT lightweight...at least not to me. To me Jupiter "white" sousaphones are heavy.
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