Super Z

Hello
I ever use in my life magneto spark in my Weedeater Poulan 25 cc , in my club have two converted chainsaw flying 36cc and 40 cc ,with magneto , a 45 cc Zenoah with magneto and a CRRC 50 electonic ignition.
I cant compare magneto versus electonic ignition because I have only my Weedeater flying, and never have two same engines with magneto and electronic ignition to make comparison nor the same engine with both types ignitions.
My Weedeater surpased and survived a bit more than 100 hours logged.
I take a new engine from a Weedeater Poulan and put in an airplane.
Never have a problem with magneto , adjust magneto flywheel clearance and forget it.
Carbon in a spark plug 2 or three times but engine fail predictabily and can land and clean.
Use hot grade spark plug.
Weight in the nose but we can balance because we scratch built and make adjustments. Do not worry because planes are big and one of it have 180 g. lead in the tail to balance, but in a 9.5 kg plane , no problem.
Batteries to care, NEVER, no switch, no leads, nice.
Only a rope and gas and the engine start to life.
We fly relaxed planes, no stress flying, slow and gentle.
The converted chainsaws, one have 2 hours flying time and the other have 1 hour, but start very well at 5 degrees Centigrade, with Yamaha Two Stroke at 5%.
The performance of Weedeater is for scale flying in 6 kg. flying wing.
The chainsaws engines are powerful for the airplanes ,if you put at 1/2 throttle is like a rocket, have excesive speed, in a 9.5 kg. plane (dry) and 2.5 m span and the other is a 8.5 kg plane.
You can see a small video of my flying wing and the photo of yellow plane with a child lying in the floor is with a 40cc chainsaw engine, the plane have other engine now, we change after the photos.
Both chainsaw engines are chinese or clon, Jeng Feng (McCulloch) 40 cc and the other is Niwa (Toyama or Gamma) 36 cc.
Happy flying and happy landings
Jose
Argentina