---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Sat 12/12/15: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:20 AM - Re: Primer bulb failure (Denny Baber) 2. 06:48 AM - Re: Primer bulb failure (John Hauck) 3. 07:03 AM - Re: Primer bulb failure (John Hauck) 4. 07:15 AM - Re: Primer bulb failure (Richard Pike) ________________________________ Message 1 _____________________________________ Time: 05:20:55 AM PST US Subject: Re: Kolb-List: Primer bulb failure From: Denny Baber I put a small 7lb pressure metal 12v fuel pump in series between the filter and the stock fuel pump. A switch on the dash allows me to prime the system and then shut it off, but it will also run the engine if the stock fuel pump stops operating in case of flight emergency. I see no reason it can't take over if the stock check valve fails, or the stock pump or pulse line fails. I read that the fuel system is the number one cause of engine stoppage. Gasohol uses plant-based alcohol and it eats rubber. The pump I picked up at Autozone is made to run with gasohol, and doesn't restrict flow when shut off. Respectfully, Dennis Baber (305) 814-7218 baberdk@gmail.com Receive gracefully and share; that's all there is. ________________________________ Message 2 _____________________________________ Time: 06:48:34 AM PST US From: "John Hauck" Subject: RE: Kolb-List: Primer bulb failure I'm a firm believer in auxiliary electric fuel pumps. When you mention pulse line failure (I assume for a two stroke), I don't know how long that engine would run before it fails. A pulse line failure would normally open the crank case to the atmosphere. Anyone experienced a pulse line failure in flight? Another reason for me to run premium neoprene fuel line, rather than plastic "ultralight" tubing. john h mkIII Titus, Alabama From: owner-kolb-list-server@matronics.com [mailto:owner-kolb-list-server@matronics.com] On Behalf Of Denny Baber Sent: Saturday, December 12, 2015 7:20 AM Subject: Re: Kolb-List: Primer bulb failure I put a small 7lb pressure metal 12v fuel pump in series between the filter and the stock fuel pump. A switch on the dash allows me to prime the system and then shut it off, but it will also run the engine if the stock fuel pump stops operating in case of flight emergency. I see no reason it can't take over if the stock check valve fails, or the stock pump or pulse line fails. I read that the fuel system is the number one cause of engine stoppage. Gasohol uses plant-based alcohol and it eats rubber. The pump I picked up at Autozone is made to run with gasohol, and doesn't restrict flow when shut off. Respectfully, Dennis Baber (305) 814-7218 baberdk@gmail.com Receive gracefully and share; that's all there is. ________________________________ Message 3 _____________________________________ Time: 07:03:49 AM PST US From: "John Hauck" Subject: RE: Kolb-List: Primer bulb failure Should have added the following to my comment below: "I don't know how long the engine would run before it fails "with an auxiliary fuel pump". john h From: owner-kolb-list-server@matronics.com [mailto:owner-kolb-list-server@matronics.com] On Behalf Of John Hauck Sent: Saturday, December 12, 2015 8:48 AM Subject: RE: Kolb-List: Primer bulb failure I'm a firm believer in auxiliary electric fuel pumps. When you mention pulse line failure (I assume for a two stroke), I don't know how long that engine would run before it fails. A pulse line failure would normally open the crank case to the atmosphere. Anyone experienced a pulse line failure in flight? Another reason for me to run premium neoprene fuel line, rather than plastic "ultralight" tubing. john h mkIII Titus, Alabama From: owner-kolb-list-server@matronics.com [mailto:owner-kolb-list-server@matronics.com] On Behalf Of Denny Baber Sent: Saturday, December 12, 2015 7:20 AM Subject: Re: Kolb-List: Primer bulb failure I put a small 7lb pressure metal 12v fuel pump in series between the filter and the stock fuel pump. A switch on the dash allows me to prime the system and then shut it off, but it will also run the engine if the stock fuel pump stops operating in case of flight emergency. I see no reason it can't take over if the stock check valve fails, or the stock pump or pulse line fails. I read that the fuel system is the number one cause of engine stoppage. Gasohol uses plant-based alcohol and it eats rubber. The pump I picked up at Autozone is made to run with gasohol, and doesn't restrict flow when shut off. Respectfully, Dennis Baber (305) 814-7218 baberdk@gmail.com Receive gracefully and share; that's all there is. ________________________________ Message 4 _____________________________________ Time: 07:15:02 AM PST US Subject: Kolb-List: Re: Primer bulb failure From: "Richard Pike" Matt Dralle : Please delete this thread - it appears to be a duplicate. ??? Do not archive. -------- Richard Pike Kolb MKIII N420P (420ldPoops) Kingsport, TN 3TN0 Would you consider yourself to be a good person? https://www.youtube.com/watch?v=VWcDXT6pH7A Read this topic online here: http://forums.matronics.com/viewtopic.php?p=450899#450899 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kolb-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kolb-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/kolb-list Browse Digests http://www.matronics.com/digest/kolb-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.