Europa-List: props

[Fred Klein <fklein@orcasonline.com>]

I suggest that any discussion of prop efficiencies these days,  
particularly when diameter is restricted, would benefit from recent  
work by Paul Lipps. An article about his props can be found at:

        http://www.eaa.org/experimenter/articles/2009-02_elippse.asp

He does not shy away from 3 and 4 bladed designs...

Fred