Tachometer setting for radical engine

8181C

Member
Joined
Oct 13, 2010
Messages
57
Can someone tell me the correct EMS setting for a 9 cylinder radial engine? It was on one, I see 1.5 for 6 cylinder engines but I can’t find any info for 9 cylinder radial with geared reduction.
thanks
 

DBRV10

Active Member
Joined
Jun 15, 2008
Messages
926
Location
Brisbane, Qld. Australia
A radical engine hey :)

It depend on the ignition source. You need to work out how many pulses per complete combustion cycles of all cylinders and divide by two, because the number of revs of a 4 stroke engine is two per suck squeeze bang blow.
 
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