I believe when the trailing plug fires a waste spark would then reach the
 > compressing intake charge on the other rotor.
 >
 > Mike McGee, RV-4 N996RV, O320-E2G, Hillsboro, OR
 > 13B in gestation mode

We have a winner!!!!!!

While there are several systems for lighting the fire in the leading plugs,
the trailing system must be distributed (with the monkey motion distributor)
or electronically. However at near full throttle operation, there is little
power lost firing both the leading and trailing plug in the same housing
(read that again) at the same time. It takes only two double output coils to
do it instead of three or four in other systems. It can be done with a single
reluctor on the crank and two pickups, 180 degrees apart. No advance system
is required. The crank trigger on a large diameter disc is the most accurate
method for timing.
Lynn E. Hanover

 
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