Page 12 - NM Spring_2021

precision bearings that will handle This launched us into a discussion
the high temperatures and keep
the center shaft running true and
accurate.”
Most fuel cars will only run for a
total of approximately three to four
minutes, adding in the burnout,
backing up, staging and finally the
run, but the heat they generate is
fairly intense.
Wyman demonstrated the
amount of heat the magneto puts
out by spinning one in System
1’s test bench while hooked up to
eight spark plugs firing in their
own pressure chamber. Once the
unit was shut off, a check of the
base temperature revealed it to be
already at 250-degrees. Because of
the amount of spark generated, it
was equally amazing to touch the
coil wire and feel how hot it was.
12
Magnetos have been around for
about spark plug wires. a very long time dating back to the
1800s. Obviously a lot has changed
“I generally recommend to the since then but the magneto is still
teams to change at least the coil the ignition system of choice in
wire every second race or so,” says some categories. Keeping that
Wyman. “The coil wire is the worst “spark” alive is what it’s all about.
because it fires eight times more
than any single spark plug wire.”
For cars using electronic boxes,
the use of a suppression type plug
wire is a must. However, as Miller Fuel Injection Enterprises
pointed out, “Suppression type 541.990.2485
wires will wear out electrically at www.fuelinjectionent.com
some point, even if they look brand
new. Applications using a points
magneto can use a solid core plug
wire that doesn’t wear out. But if
there are data loggers, tachs, etc.
onboard to keep happy, definitely
go with suppression wire - even with System 1 Pro Ignition
points.” 559.687.0288
system1filters.com/ignition
Nitro Madness Magazine SPRING 2021