---------------------------------------------------------- Commander-List Digest Archive --- Total Messages Posted Mon 09/03/07: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:39 AM - Re: FUEL BOOST PUMP 500B (N395V) 2. 07:51 AM - Re: FUEL BOOST PUMP 500B (lloyd silverman) 3. 08:38 AM - Re: Re: FUEL BOOST PUMP 500B (Bill Bow) 4. 08:47 AM - Re: Re: FUEL BOOST PUMP 500B (CloudCraft@aol.com) 5. 10:35 AM - Re: Re: FUEL BOOST PUMP 500B (Bill Bow) 6. 12:27 PM - Re: Re: FUEL BOOST PUMP 500B (Moe - Ross Racing Pistons) ________________________________ Message 1 _____________________________________ Time: 05:39:21 AM PST US Subject: Commander-List: Re: FUEL BOOST PUMP 500B From: "N395V" Anyone ever tried to get a field approval for an external boost pump? I went through 2 boost pumps on my 560 and 3 on the 685. These damned things are terribly problematic. -------- Milt 2003 F1 Rocket 2006 Radial Rocket Read this topic online here: http://forums.matronics.com/viewtopic.php?p=132475#132475 ________________________________ Message 2 _____________________________________ Time: 07:51:10 AM PST US Subject: Commander-List: Re: FUEL BOOST PUMP 500B From: "lloyd silverman" I BELEIVE CENTRAL AIR HAS AN STC OR FIELD APPROVAL ON 5OOB. I KNOW SEVERAL COMMANDER DRIVERS WHO ONLY TURN ON BOOST PUMPS TO START ENGINES, NEVER DURING FLIGHT. NOT A SAFE IDEA,BUT PUMPS LAST LONGER..... -------- LLOYD SILVERMAN Read this topic online here: http://forums.matronics.com/viewtopic.php?p=132492#132492 ________________________________ Message 3 _____________________________________ Time: 08:38:48 AM PST US From: "Bill Bow" Subject: RE: Commander-List: Re: FUEL BOOST PUMP 500B "Not a safe idea?" A little boost pump trivia. The Pratt and Whitney powered Douglas DC-8 was designed to take off and land with the boost pumps off. Supposedly, Douglas felt if you wrecked it at least the boost pumps wouldn't be pumping fuel into the fire. I'm not sure why they thought you would have electrical power for the pumps to run though. The end. bilbo -----Original Message----- From: owner-commander-list-server@matronics.com [mailto:owner-commander-list-server@matronics.com] On Behalf Of lloyd silverman Sent: Monday, September 03, 2007 10:51 AM Subject: Commander-List: Re: FUEL BOOST PUMP 500B I BELEIVE CENTRAL AIR HAS AN STC OR FIELD APPROVAL ON 5OOB. I KNOW SEVERAL COMMANDER DRIVERS WHO ONLY TURN ON BOOST PUMPS TO START ENGINES, NEVER DURING FLIGHT. NOT A SAFE IDEA,BUT PUMPS LAST LONGER..... -------- LLOYD SILVERMAN Read this topic online here: http://forums.matronics.com/viewtopic.php?p=132492#132492 ________________________________ Message 4 _____________________________________ Time: 08:47:27 AM PST US From: CloudCraft@aol.com Subject: Re: Commander-List: Re: FUEL BOOST PUMP 500B In a message dated 03-Sep-07 08:39:36 Pacific Daylight Time, bowing74@earthlink.net writes: A little boost pump trivia. And a bit more ... Remember when Cessna 300 and 400 series had HI/LO boost pumps that were pressure switch activated? If fuel pressure dropped below a certain value, the pump would kick into HI output. More engine failures were caused by engine flooding than anything else and Cessna had the pressure switches removed. Wing Commander Gordon http://discover.aol.com/memed/aolcom30tour ________________________________ Message 5 _____________________________________ Time: 10:35:05 AM PST US From: "Bill Bow" Subject: RE: Commander-List: Re: FUEL BOOST PUMP 500B Too much of a good thing. bilbo _____ From: owner-commander-list-server@matronics.com [mailto:owner-commander-list-server@matronics.com] On Behalf Of CloudCraft@aol.com Sent: Monday, September 03, 2007 11:46 AM Subject: Re: Commander-List: Re: FUEL BOOST PUMP 500B In a message dated 03-Sep-07 08:39:36 Pacific Daylight Time, bowing74@earthlink.net writes: A little boost pump trivia. And a bit more ... Remember when Cessna 300 and 400 series had HI/LO boost pumps that were pressure switch activated? If fuel pressure dropped below a certain value, the pump would kick into HI output. More engine failures were caused by engine flooding than anything else and Cessna had the pressure switches removed. Wing Commander Gordon AOL.com. ________________________________ Message 6 _____________________________________ Time: 12:27:47 PM PST US From: "Moe - Ross Racing Pistons" Subject: RE: Commander-List: Re: FUEL BOOST PUMP 500B Milt, Where was the fuel pump on your 685? I would have assumed that it was in the same place as my 680 (in the nacelle). They are a little hard to get to but not in the tank. Moe -----Original Message----- From: owner-commander-list-server@matronics.com [mailto:owner-commander-list-server@matronics.com] On Behalf Of N395V Sent: Monday, September 03, 2007 5:39 AM Subject: Commander-List: Re: FUEL BOOST PUMP 500B Anyone ever tried to get a field approval for an external boost pump? I went through 2 boost pumps on my 560 and 3 on the 685. These damned things are terribly problematic. -------- Milt 2003 F1 Rocket 2006 Radial Rocket Read this topic online here: http://forums.matronics.com/viewtopic.php?p=132475#132475 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message commander-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Commander-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/commander-list Browse Digests http://www.matronics.com/digest/commander-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.