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Drag Racing - Hoffer Leads the Pack in Drag Racing.
Hoffer Flow Controls has been supplying turbine flowmeters
to the automobile drag race
world for the past several years. Typically a small HO Series
flowmeter with a magnetic
pick up coil is supplied to meter a nitro-methane fuel mixture
on the supply side of the engine.
This allows the driver to accurately monitor consumption during
the race. The flowmeter
monitors both flow rate and total. This allows the car crew
team to evaluate how
much fuel was used during the race. This is critical information
in drag racing. A typical
race is a ¼ mile and is completed in under 5 seconds.
Approximately 5 gallons of fuel are
used during the race and the dragster is moving at in excess
of 300 miles per hour at the
end of the race. The fuel consumption information is used
to evaluate future car design
changes.
| Hoffer has been selected as the supplier
of flowmeters by a number of race teams and car design
teams. A critical issue in the selection of a flowmeter
is accuracy, response time, and low pressure drop. The
Hoffer HO precision series flow meters are supplied
with 100% of the meter components precision machined.
No "cast" components are used. The low mass
rotor responds in 5 to 7 milliseconds. An additional
consideration was the pressure drop created by the meter.
The Hoffer design provides a shallower blade angle than
other turbine designs. This minimizes the pressure drop.
The typical pressure drop on these meters is about 4
to 5 PSI at full scale. This is about half of what other
turbine designs exhibit. |
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The combination of "winning features" on the
Hoffer HO series of axial turbine flowmeters provide
the maximum number of benefits to the race car world.
This application adds a new dimension to auto racing.
The winner in today's race world is a combination of
a talented driver anda car with the best design and
instrumentation available. |
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