ORIGINAL: Madd_Maxx
My biggest problem using plastic spinners on my spa3dt was that while learning to do basic 3d manuevers (and several dirtnaps later) I would crack or bust the spinners and that was getting expensive so I moved up to a du-bro aluminum prop nut...they work in electric starters without having to turn the cone insert around and work great.

[link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXE158&P=ML]Du-Bro Prop Nut[/link] <--- there is the ones I like to use. They are available in several shaft and thread combinations for almost every motor out there and in weighted and non-weighted models as well.