Cool Tracy,
If you run a standard Mazda plug the floating secondary coil won't hurt you. The problem that was
found was that the fine wire electrode would take on a mushroom shape. It was believed that the
combination of engine heat and electrical load caused it. The center wire on the platinum plugs is
softer. the Mazda style with the two or four sidewires and standard center electrode won't give
problems. I don't have extensive dyno rotary experience so I will bow to those who have used
advanced timing. The exhaust flames when the secondary coils failed on our RX-3 sedan racer were
spectacular however!  Bill Jepson

 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2002 All world wide rights reserved.