The speed at the tip of the longer prop is greater for a given RPM. In fact, the speed at any given point on the prop is increasing as you moves outward,
this has to be wrong , have you ever seen an ice skater do a spin with his or her hands held out , then they move them in they start turning faster ? well I beleive this is what happens as the prop gets shorter not longer, and what is GWS , forgive for my ignorance , but this is important because I just received 13 extra props that are smaller and definitly will send them if it sloes my plane down !