Ed,
I believe if Dave Leonard can
now 'see the light' through the muffler - it may be an indicator
that the sound waves have broken through the joining cones. In any
event it will only get louder at the passage gets bigger.
I figured this would be the weakest
link in the HushPower design as it concentrates all the energy into
the smallest area, holes in the cones also weaken the
area - not so with our design.
George ( down under)
Ed,
Reflective cone theory is what Bill
Jepson and I have designed into our joint venture exhaust
design - although I haven't finished it so I don't
know how well it works.
The principle is to maintain a clear
passage for the exhaust flow but redirect the sound waves (which are
energy) therefore turning the sound into heat. In our design
the heat is dissipated with cool air flow through the exhaust and
further cool air around the exhaust.
However this is not a cheap exhaust to
make, as mine is assembled out of a number of cones ( 1.6mm SS). I
think the cost of the cones came to $200 and then there's the
welding. There is also the fact that it is also not light because of
the thickness of the material.
The bottom line is that cones by their
nature redirect sound energy into heat. The idea is to not have a
direct exit for the sound energy - this has been achieved in this
design by having the sound waves inter the center of a cone which is
blocked-off and is redirected through the holes and redirected out.
So the theory in this design (
HushPower) is sound - excuse the pun. The packing material merely
protects the light outer skin. There will be a tremendous amount of
heat in the inner chambers so I don't know how long they will last,
maybe there thick enough to take it ? However if their cheap enough
just replace them.
George ( down under)
Sent: Thursday, January 10,
2008 4:34 AM
Subject: [FlyRotary] URL for
HushPower
It looks like Hushpower has been spun off
from FlowMaster. Here is the URL for the Hushpower
site.
Ed
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