I'm just starting to build my first e-stunter and want to use a Precision Aero 1.75" spinner.  The motor is an e-flite.   The 5mm adapter that comes with the motor has a 1/4 28 threaded shaft that is about 3/8 to 1/2 inch too short to be able to mount an APC e-prop and the AP spinner.  Anyone know of a adapter that would be long enough.  I'm going with the Randy's spinner as I need the weight and like the shape better than an e-flite spinner.

The threaded portion of the prop adapter is only about 3/4" long.  The motor includes the adapter.  It has a small cone shaped nut to secure the prop.  As I said the unit needs to be 3/8" to 1/2" longer.  If you go to Horizon Hobby and look up E-flite motors you can see the assembly.

Here is a varied selection.  Good luck!  <http://www.radicalrc.com/category/Prop-Adapters-Collet-&-Etc.-36/rec/48>

Alan, you may look at tru turn , they are producing adapters for electrics now as well, I dont KNOW they have anything, but its worth a shot

http://www.truturn.com/af_electricmotors.htm

They will also slot the spinner for a pusher prop.  Aren't Randy's spinners are slotted for tractor props?