46
AeroVee 2.1
Rev Z. 01/14/2015
Sonex Aircraft
LLC
© 2014 All Rights Reserved
__ 4. Loosen the socket head cap screw (D) and rotate the
magnet cap (A) until the mark on the magnet cap (B) is
centered under the sensor (C) of the upper trigger.
A
C
B
When the crankshaft is in the proper position (see steps 1 thru
4), static timing is achieved by loosening the cap screw (D)
and rotating the trigger cap (A) until the mark on the cap (B)
is centered under the sensor of the upper trigger (C).
D
ELECTRONIC IGNITION TIMING
__ 5. Tighten the socket head cap screw.
Timing Check
ground Check.
Running the engine and performing a mag
check will indicate the accuracy of the timing of the second-
ary ignition. A mag check at 1600 - 2000 RPM should reveal
little or no change in RPM. If a change of 50 RPM or greater
is noted, the magnet cap should be rotated slightly one way or
the other.
in Flight Check.
Under normal cruise power (2900 to 3400
rpm):
__1. Turn off the secondary ignition and observe the cylinder
head temperature.
__2. Turn on the secondary ignition and turn off the Primary
ignition. Observe the cylinder head temperature.
If the cylinder head temperature rises when operating with
only the secondary ignition, the secondary ignition is ad-
vanced. Retard the secondary ignition by turning the magnet
cap slightly clockwise, as viewed from the flywheel end of the
engine.
