Critical Dimensions For Mixing Venturi?

Hello. Does anyone know what parts of a gas inspirator (venturi)
primarily affect the fuel/air ratio? I've tried searching high and low
for the answer to this and can't find it anywhere. It seems like a
black art or something.

See, what I'm doing is building a reproduction of a pest scaring device
which makes a loud noise to scare away birds and animals from crops,
just in case anyone was curious. The goal is to have an adjustable
fuel/air ratio to vary the flame speed. This changes the "tone" that
is produced. Maximum flame speed occurs when the mixture is
stoichiometric and tapers off on either side. I figured someone on
here would know about this because sometimes people make their own
custom burners for their kilns.

Thank you,
Robert

The adjustable wheel that can be screwed up or down by hand asjusts the
oxygen allowed to flow through the venturi, this gives a richer or leaner
mixture of air/fuel ratio. the closer the wheel to the venturi the richer
the flame with a decrease in flame velocity, screwing the wheel away from
the venturi allows more air in, a cleaner burn and an increase in velocity,
the pressure of the gas supply remains constsnt throughout.

"The Lightning Stalker" wrote in message
ups.com...
Hello. Does anyone know what parts of a gas inspirator (venturi)
primarily affect the fuel/air ratio? I've tried searching high and low
for the answer to this and can't find it anywhere. It seems like a
black art or something.

See, what I'm doing is building a reproduction of a pest scaring device
which makes a loud noise to scare away birds and animals from crops,
just in case anyone was curious. The goal is to have an adjustable
fuel/air ratio to vary the flame speed. This changes the "tone" that
is produced. Maximum flame speed occurs when the mixture is
stoichiometric and tapers off on either side. I figured someone on
here would know about this because sometimes people make their own
custom burners for their kilns.

Thank you,
Robert

I should point everyone interested to the spirited discussions in
alt.crafts.metalworking and alt.crafts.blacksmithing.

The Lightning Stalker wrote:
Hello. Does anyone know what parts of a gas inspirator (venturi)
primarily affect the fuel/air ratio? I've tried searching high and low
for the answer to this and can't find it anywhere. It seems like a
black art or something.

See, what I'm doing is building a reproduction of a pest scaring device
which makes a loud noise to scare away birds and animals from crops,
just in case anyone was curious. The goal is to have an adjustable
fuel/air ratio to vary the flame speed. This changes the "tone" that
is produced. Maximum flame speed occurs when the mixture is
stoichiometric and tapers off on either side. I figured someone on
here would know about this because sometimes people make their own
custom burners for their kilns.

Thank you,
Robert

I should point everyone interested to the spirited discussions in
alt.crafts.metalworking and alt.crafts.blacksmithing with this same
topic.

The Lightning Stalker wrote:
Hello. Does anyone know what parts of a gas inspirator (venturi)
primarily affect the fuel/air ratio? I've tried searching high and low
for the answer to this and can't find it anywhere. It seems like a
black art or something.

See, what I'm doing is building a reproduction of a pest scaring device
which makes a loud noise to scare away birds and animals from crops,
just in case anyone was curious. The goal is to have an adjustable
fuel/air ratio to vary the flame speed. This changes the "tone" that
is produced. Maximum flame speed occurs when the mixture is
stoichiometric and tapers off on either side. I figured someone on
here would know about this because sometimes people make their own
custom burners for their kilns.

Thank you,
Robert