Hello Drac1,

It work as Robert said.The YS ignition fires every time the sensor is exited, I actually move the prop back and forth about 20deg and the ignition fires every time I cross the sensor, the DA engines ignition I think works as you say as it has to have some speed (achievable by hand), if the prop is moved slowly it will not fire, but I am not sure, it's been a while since I ran my DA100.

You ,ight have a problem with your ignition if it is a YS.

Regards