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The Electronic Points Box
is the brain of the Pro Mag
12. These boxes contains
electrical circuits that
replace the points and are
responsible for controlling
the power that the generator
produces. The Coil is also
mounted in this strong, cast
aluminium housing.
The
Points Box controls the spark
duration and the unique full
power firing sequence of the
Pro Mag 12. The energy from
the generator is controlled
with Field Effect Transistor
(FET) technology which is far
superior to mags still using
points as a trigger source.
FETs are much more accurate,
durable and capable of
handling much more current.
This is why the Pro Mag is
capable of delivering full
energy sparks throughout the
entire rpm range of the
engine while conventional
magnetos fall short of full
power at high racing rpm.
Plus, the advanced Points Box
keeps each spark glowing for
up to 26° of crankshaft
rotation.
Another
unique feature of the Pro Mag
built-in Soft Touch Rev
Control. The rpm limit is
adjusted with plug-in modules
and will save your expensive
engine in the event of
driveline failure or missed
shifts. The limit is accurate
to within 1% and operates by
dropping the spark to
individual cylinders then
firing that plug on the next
cycle to avoid filling the
cylinder with fuel. This
system provides a smooth,
backfire free limit. Plus,
you can plug in an MSD Two or
Three Step Module Selector to
provide multiple rpm limits
that can be used during
warm-up laps or for
consistent holeshots.
The cast aluminium housing of
the Points Box provides a
strong mounting foundation
for the electronics and coil.
All of the circuits receive a
heavy duty coating of
Humi-Seal for protection
against vibration and
moisture.