---------------------------------------------------------- Glasair-List Digest Archive --- Total Messages Posted Thu 07/19/07: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:14 AM - Re: Props (Byron Covey) 2. 06:35 AM - Re: Glasair-List Digest: 4 Msgs - 07/18/07 (John Markey) 3. 06:35 AM - Re: Glasair-List Digest: 4 Msgs - 07/18/07 (John Markey) ________________________________ Message 1 _____________________________________ Time: 02:14:09 AM PST US From: "Byron Covey" Subject: Re: Glasair-List: Props Which Hartzell? The newer "blended airfoil?" The model recommended by Glasair? Other? With respect to the G-III: Stoddard-Hamilton published a report of a comparison test of the recommended McCauley and Hartzell propellers. It was in the old factory newsletter. As I recall, there wasn't much difference in overallperformance. Better propellers are available today. Anyone have experience with the new composite props? Thanks, BJC ________________________________ Message 2 _____________________________________ Time: 06:35:15 AM PST US From: John Markey Subject: Glasair-List: Re: Glasair-List Digest: 4 Msgs - 07/18/07 I recently put in an EIS4000 and am seeing some freightening cylinder head values during climbout [80'F, 2000' density altitude, 1700 lbs. total weight +/-] I think this might be due to the flat air exits on the bottom of the cowling. The plane has no speed or aerodynamic flares around the two exit holes. The tow exhaust pipes exit down and back through these holes. What I am guessing is that I am reducing the effective cross area on the inlets at climb angle and increasing the frontal pressure on the outlets. I am designing in my head a fairing that would smooth the air flow past the exits and pull air out in the airstream. If anyone has pictures or drawings [links?] of how they have managed to smooth the exits, I would be most appreciative were you to share them with me. Comments? John Markey GIIS FT N661CC --------------------------------- Pinpoint customers who are looking for what you sell. ________________________________ Message 3 _____________________________________ Time: 06:35:17 AM PST US From: John Markey Subject: Glasair-List: Re: Glasair-List Digest: 4 Msgs - 07/18/07 I recently put in an EIS4000 and am seeing some freightening cylinder head values during climbout [80'F, 2000' density altitude, 1700 lbs. total weight +/-] I think this might be due to the flat air exits on the bottom of the cowling. The plane has no speed or aerodynamic flares around the two exit holes. The tow exhaust pipes exit down and back through these holes. What I am guessing is that I am reducing the effective cross area on the inlets at climb angle and increasing the frontal pressure on the outlets. I am designing in my head a fairing that would smooth the air flow past the exits and pull air out in the airstream. If anyone has pictures or drawings [links?] of how they have managed to smooth the exits, I would be most appreciative were you to share them with me. Comments? John Markey GIIS FT N661CC --------------------------------- Pinpoint customers who are looking for what you sell. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message glasair-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Glasair-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/glasair-list Browse Digests http://www.matronics.com/digest/glasair-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.