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Procedure applies to single and multiple cylinder engines. If you have a multi cylinder engine with
multple pickups it is recommended (but not required) that you perform this procedure on each
cylinder/pickup pair for most accurate timing.
Necessary tools:
- strobe light
- dial gauge
Follow the procedure:
Measure approximate static angle with a degree wheel, just to have starting point...look at the
drawing below.
Counterclockwise rotation:
Clockwise rotation:
。
program CDI with measured approximate static angle
。
program CDI with flat ignition curve...16 deg advance is suitable for most engines.
。
find information about engine stroke and conrod length
。
convert programmed flat ignition advance angle to millimetres
Example:
α =16 deg (ignition advance)
L=110 mm (conrod length)
R=54/2=27 mm (engine stroke divided by 2)
T=1,3 mm (calculated ignition advance in mm)
Equation for calculating from degrees to millimetres:
a
= ignition advance in degrees
T
= ignition advance in mm
R
= engine stroke divided by 2 in mm
