"Fly" wrote in message ...
Hi Folks!

Was there ever a prop modified with a trailing edge bump for the purpose of
increasing MP at the ram air inlet?

Faint memory is maybe Lopresti marketed a Hartzerll with a trailing edge
tab.


You're memory may be faint, but it working! The prop is a Hartzell
with a trailing edge tab, specifically design to work with the air
inlet on LoPresti's Wholey Cowl (Comanche). They call it a
Sychro-Pulse prop.

Here's a URL :

http://speedmods.com/syncro-prop.htm

John Galban=====N4BQ (PA28-180)