This past weekend my CDI ignition just quit in the air on a vertical (apc 18.1 x 10 and 25% nitro standard oil percentage) . It was propably my 9th flight on it and it ran beautifull so I swapped the regulators and tried three different batteries-still no spark. I ran seperate batterie ,regulator and switch.

Ended up converting back to glow by taking out the unit and spark plug, re-tuned and finished the comp.Motor is pulling like a tractor!

Will get another unit from Central,but was just wandering if you guys might have any ideas on what migth have happened or was it just badluck regarding the cdi unit?

Really want to give it another try.

THANKS

Gerrie