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>>This mag clicks as the points open,
and it is set to top dead center. Is this correct? Should the
impulse-coupled mag be set at 0 degrees? Does it then advance 25
degrees as the RPM comes up?<<

No, set the mags after the impulse has been tripped.  The impulse delays or
retards the spark only when starting.  After the rpms come up to over
approximately 300 then the impulse is out of the picture and you get normal
timing.

Cy Galley, TC - Chair, Emergency Aircraft Repair, Oshkosh
Editor, EAA Safety Programs
cgalley@qcbc.org or experimenter@eaa.org

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Please send your photos and drawings to marvkaye@olsusa.com.
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