I would go with the Zenoah ignition. Very good spark. Go to the Toni Clark website & read about that ignition. He has good sucess with a certain battery. I think it was lower voltage....but would run the airplane longer.

The Rcexl ignition is supposed to be so good with a lot of praises. My question is ...why is there so many postings of trouble (Rcexl) with them? I have not had that good of luck with them ....2 out of 3 ...some trouble???? Capt,n