I ordered this motor, ESC and prop set from Aerocraft, and after 27 days I finally received the package. Is this the proper way to attach the prop to the prop saver that was built into the motor? I have to double up the band to make the prop stay put, is it ok to double the band like this? How safe is it to fly a plane with the prop just banded on? As you can see in photo 4 I can still push the prop down on one side, is this proper or did I do something wrong?

Also, in the last photo, can I simply solder the wires of the motor and ESC together without connectors?

Ya thats the correct way. You can get tighter bands to hold it down better if you want but as long as the prop is snug against the motor you will be fine. All that does is if you have a less then perfect landing, instead of the prop breaking, it will just pop off. But to answer your question thats the correct way.

That is correct.

Ken

Solder is not a good "Mechanical" connector where subjected to movement or vibration. It is for "electrical" connecting. Some sort of connector would be best.

Yep...that's the correct way, but you might want or need another rubber band or O-ring.

It also depends on your style of flying...
If you hear an odd sort of growling noise when pulling tight turns or doing snap rolls, etc. then it's probably the prop floating around and wanting to part cpmpany. A tighter O-ring or adding another will help that.

It's also a good idea to check them often to keep from loosing your prop at an inopportune moment.