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A
FMA Flowbench measures air volume at a given test pressure. The
pressure is measured under the test object. Using a Percent Gauge
- (Inclined Manometer) this pressure drop together
with the pressure flow of the motors is measured against a known
(calibrated) orifice on the side of the machine (ranges such
as 100cfm, 200cfm), to determine volumetric flow: eg
a flow of
90% on the 200cfm range would be 180cfm : 200 x .9 (90%) =
180. |
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Accuracy is achieved by having LARGE Percent
gauges and multiple ranges.
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With a FMA flowbench there's little wasted
power as you only have on the motors needed for any given
range. |
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FMA flowbenches use air pumps to suck or blow through the
test object to achieve the test pressures. The main test pressure
used by FMA is 28in WC (which is about 1psi). But any pressure can
be used up to the limit of the Pressure Gauge.
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Changing from Inlet to Exhaust is very
simple on the FMA machines and takes about 5 seconds with
colour coded Slides. |
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FMA use
the largest custom made Percent Gauges
that will fit on the machines for best accuracy.
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FMA Percent Gauges are designed for FMA
machines. On a range of 380cfm a change of 0.5cfm can easily
be seen |
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For comparative flow readings a standard test pressure
is used. This makes comparing other flowed objects easier.
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Taking readings throughout the range of valve lifts can show
holes or peaks in the flow which can easily be seen on the
Free Software
provided with each
machine. |
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The Free Software will provide you with
information such as Potential Horse Power, Safe RPM,
Maximum RPM, Intake manifold length, as well as print
Graphs for Inlet, Exhaust, Exhaust to Inlet
ratio and also helps in selecting the right
Cam. |
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For the most accurate flow readings on cylinder heads
FMA recommends using the setup as close as possible to what it would
be like on the engine, as flow can vary quite a bit without the
manifold and or attachments connected.
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All machines come with a full 12 month
warranty. |
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Full phone support to the original owner
for as long as they have the machine.
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Now you also receive a FREE Instruction
DVD with every
machine. |
