Need weedwacker electronic ignition circuit!

[tsnyman]

I converted a RYOBI
weedwacker 31cc Engine to rc airplane engine.<p> Because the flywheel and coil is quite front heavy I would like to replace it with a variable electronic ignition system with advance and retard to make for easier to handstart.
Remember there is no rope to pull!<p>Can Someone please help with a cicuit!
PS
(I am not an electronic buff so
please SIMPLE TERMS)

[haklesup]

I searched on "2 stroke engine controller" and "two-stroke Ignition" and found this tutorial that might help
http://www.imm.dtu.dk/courses/02224/E2.pdf

[Bernius1]

* Does the engine NEED the flywheel? Maybe the prop isn't heavy enuff.
* The flywheel magnet activates the transistor drive coil, so it acts as a tachometer sense, which you'd have to replace.
* The magneto coil will need to be replaced, maybe with a larger or heavier auto-type coil.
The only other firing source I can think of is a Xenon strobe circuit. Use a larger capacitor & coil, & 10,000 volts is possible. But it'll draw from the battery, while the magneto's energy comes from the flywheel. Are stun guns legal in your state?

[cjc1103]

There are several solutions to this problem that are commercially available. C&H Electronics sells a electronic ignition conversion for R/C aircraft use. Search the internet for model airplane engine information, repost this question on a R/C airplane news group.
Chris

[dacflyer]

YOU DO NEED THE FLYWHEEL..2 reasons... harmonic balance and also the flywheel houses the magnets to generate electricity for the magneeto coil..inside this coil houses the electronic ignition..so ita a self contained unit.. cannot modifi this..<p>r/c buff here and also small engine wizz.<p>why not use a hand held electric started like the r/c guys use on med. to large aircraft?
i have one here i use... look at
www.towerhobbies.com they have electric starters and gear reduction starters also...cheaper than the engine mod your looking for...
good luck !