ORIGINAL: mjcelli
<span style=''font-size: larger;''>Thanks for the reply!
Ok, so no advance / retard features on these simpler 2-stroke motors.
Interesting about the </span><span style=''font-size: larger;''>2nd magnet collapsing the field for the spark I was wondering about that.
Here is a pic of my magneto setup. There is an iron ''arm'' that sticks out to the left of the coil and gets near to the
flywheel. I was wondering what that did. Any thoughts?
</span>[img][/img]
Iron "arm" is part of the armature laminated core.
Many instances you will see two, one each side of the coil.
Purpose is to "conduct" the magnetic field from the rotor through to the coil at the appropriate time, ie when it lines up with the rotor magnet.