This is a special propeller, designed by Rob Romash for Science Olympiad and TSA models.

These propellers are light and include the full bearing assembly. They can be trimmed to your choice of outline shape. Features a “shark tooth” tab on top of the bearing flange for securely affixing to the motor stick, helically formed PVC blades and a freewheeling hub design.

Have your own bearing or want to use it on a scale model? snip the shaft and the prop works well in a typical pigtail bearing or nose block!

Small - 6” diameter

Med - 9.5” narrow blade

Lrg - 9.5” wide blade