Rusty;  I guess the old recollecter isn't what it used to be, as tonite I
was looking back to last April, and an e-mail from Jim Mosur stated the prop
he has for a backup is an Ivo and not a Warp Drive.  Some one else must have
told me about the Warp Drive.  Jim had an Aymar Demuth 68x74 that Ed has
tried, Jim stated this prop was good for 170 knots on 7.5 gph, which is
quite respectable.  In the Sport Aviation Mag there are 3 props listed as
ground adjustable props, Ultra Prop, Powerfin and Props Inc.  I don't have
any knowledge of these other than the fact that they are listed under the
props in the classified section.  JohnD