---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Fri 01/24/14: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:14 PM - Re: 912 ULS SB New Fuel Pump (Remi Guerner) ________________________________ Message 1 _____________________________________ Time: 02:14:31 PM PST US Subject: Europa-List: Re: 912 ULS SB New Fuel Pump From: "Remi Guerner" Richard, Obviously the max acceptable fuel pressure is determined by the design of the carburetor not the pump: a too high pressure may override the float valve and flood the carbs. Rotax received a lot of complaints about the new pump exceeding the 5.8 psi limit. It seems to me that instead of finding a technical solution and rework the pump, they just decided to extend the fuel pressure limits! Crazy! One issue is the aging of the carbs. The float needle of the Bing carb is made of rubber and is subject to wear with engine hours due to vibrations, aging etc... new carbs may withstand 7.2 psi or more without leaking but what happens after 500, 1000 hours? Note there are several provisions designed by Rotax to deal with carburetor flooding: drip tray drains and airbox drains. This is an indication that flooding is likely. I think it is safer to stay with the original limit. Another thing is to calibrate your pressure gauge as most are grossly wrong. Remi Read this topic online here: http://forums.matronics.com/viewtopic.php?p=417545#417545 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-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/europa-list Browse Digests http://www.matronics.com/digest/europa-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.