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Old 09-20-07 | 06:53 PM
  #9  
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eubi
No Rocket Surgeon
 
Joined: Jan 2005
Posts: 1,648
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From: Corona and S. El Monte, CA

Bikes: Cannondale D600, Dahon Speed T7

Originally Posted by MarkS
Does it change things when the container is wrapped? The OEM bottle is wrapped with a plastic cloth that works well with velcro.

What we need is an equation that tells us how much louder the horn will be for all that higher pressure. I suspect that the small plastic horn limits the maximum decibels no matter the pressure.

As for the wrapping, I doubt it would do much. The shear strength of the velcro wouldn't make a difference. It will keep all the exploded pieces together, though

But you gave me an idea...my sons' air bottle for their paintball markers are fiberglass wrapped. That little cylinder is strong, and can handle a high pressure.

As for decibels as a function of airflow or pressure, that's a very complicated subject. That simple hoop stress equation I posted earlier probably put half the forum to sleep. We don't even want to get into airborne noise equations.

You are probably correct in presuming it has a decibel limit...based on size and materials.
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