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#1
February 28th 06, 12:17 AM
posted to rec.aviation.homebuilt
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CriCri + 3 bladed prop(s) ???
http://flight.cz/cricri/photos/FR-Fr...e_secchi_2.jpg
CriCri with a 3 bladed prop. http://flight.cz/cricri/photos/FR-Fr..._secchi_20.jpg Another pic of the 3 bladed CriCri http://flight.cz/cricri/english/cri-...res-secchi.php Pics are from this page. (Guessing...) Each engine is anywhere from 15-23 hp (5k-8k RPM). Is that enough engine ability to notice (any) speed increase with the 3 blade prop? Or is the benefit all climb - and a little bit quieter? CriCri: Empty weight .......65-85 kg MTOW ................175 kg - maybe a little more. Cruise .................120 mph - maybe a little more Montblack 
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#2
February 28th 06, 03:41 PM
posted to rec.aviation.homebuilt
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CriCri + 3 bladed prop(s) ???
Montblack a écrit :
http://flight.cz/cricri/photos/FR-Fr...e_secchi_2.jpg CriCri with a 3 bladed prop. http://flight.cz/cricri/photos/FR-Fr..._secchi_20.jpg Another pic of the 3 bladed CriCri http://flight.cz/cricri/english/cri-...res-secchi.php Pics are from this page. (Guessing...) Each engine is anywhere from 15-23 hp (5k-8k RPM). Is that enough engine ability to notice (any) speed increase with the 3 blade prop? Or is the benefit all climb - and a little bit quieter? CriCri: Empty weight .......65-85 kg MTOW ................175 kg - maybe a little more. Cruise .................120 mph - maybe a little more Montblack Why not ask Frederic Secchi ? Or better yet, Michel Colomban, who designed the airplane, and is a first class aerodynamicist ? Regards, Gilles Thesee Grenoble, France http://contrails.free.fr
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#3
March 1st 06, 05:02 AM
posted to rec.aviation.homebuilt
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CriCri + 3 bladed prop(s) ???
Another reason to add a blade is to absorb more power within a limited
diameter.
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#4
March 2nd 06, 03:34 AM
posted to rec.aviation.homebuilt
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CriCri + 3 bladed prop(s) ???
"GTH" wrote in message
Why not ask Frederic Secchi ? Or better yet, Michel Colomban, who designed the airplane, and is a first class aerodynamicist ? Because they don't post in this group? D.
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