Ejection charge is black powder so there is flame. Duration may not be enough to light a green fuse but the faster more sensitive grey fuse certainly would.

When the spent motor ejects there may not be enough energy to eject the nose cone (eject motor instead of nose cone and streamer doesn't come out)

@@rwkhobbies1969 no likely though. Spent motor is still heavier than the streamer and nose cone on this rocket

@@TheOffCycle in my experience what normally happens with a motor ejecting out the back of an 18mm rocket is that the streamer stays stuck in the tube with the nose cone off "trying to pull the streamer out". The energy of the ejection charge is converted to work. Work equals force times distance. Work required to fully deploy streamer is Work required to eject cone plus work to eject streamer. Work to eject cone is friction force between cone shoulder and tube times length of shoulder. Friction force is a function of cone tightness and surface roughness (friction coefficient). Work to get streamer out of tube is friction of streamer in tube times distance of travel for streamer to get out of tube. Note that Work to get streamer out of tube is often way greater than Work to get cone off because streamer is so tight in the rocket because it's such a small diameter. Work to eject motor out the back is friction force between motor and tube times length of motor. Friction force is how tight the motor is and friction coefficient between motor and tube. So, in all practicality there is a choice between ejecting a motor vs ejecting a streamer. Simultaneously ejecting both with any sort of consistency is not practical and if successfully achieved could be more likely chalked up to getting lucky and is in all likelihood not repeatable.