The DRL300
has an improved clamping capability, and more outputs than
the DRL200. The DRL200 could clamp only 2 of our green
(higher impedance) coils. The DRL300 can clamp up to 4 of
our blue (low impedance) coils. This means it can be used on
drag bikes, and many other applications it could not manage
before (automotive HEI ignitions). In addition, the output
stage has also added a separate kill input. This input works
separate of the rev limiter and can function even when the
rev limiter has no power. This will kill the spark whenever
a 12V signal is applied to the input.
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The Dyna
DRL-400 Two Stage Rev Limiter has been specifically designed
to maximize launch performance and over-rev protection in
drag racing. The DRL-400 allows a precisely controlled
launch rpm limit to be set, while also guaranteeing against
over-rev damage due to missed shifts or drive train
breakage. Selection
between the launch limit and the upper over-rev limit is
usually made through the use of a clutch lever switch. Both
rpm limits are adjustable via two knobs on the DRL-400. The
DRL-400 constantly monitors the engine rpm with great
precision and randomly deletes ignition pulses to hold the
engine exactly at the desired rpm. The DRL-400 can hold a
270 horsepower engine to a steady launch rpm with less then
+/- 50 rpm wavier. Other launch rpm limiters typically make
the engine rpm waive through a pounding oscillation. This
can be very hard on expensive racing components. The DRL-400
works with all inductive electronic ignitions on 2 and 4
cylinder engines. It is housed in a 31/4” x 23/8” x 1”
plastic case with integral mounting flanges.