---------------------------------------------------------- Zenith701801-List Digest Archive --- Total Messages Posted Thu 04/02/09: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:13 AM - Re: Re: Gasoline smell (Gordon) 2. 11:33 AM - Re: Gasoline smellGasoline smell (kissell) ________________________________ Message 1 _____________________________________ Time: 04:13:01 AM PST US From: "Gordon" Subject: Re: Zenith701801-List: Re: Gasoline smell I'm now inclined to believe that Johann G is right-on, I have two of the AS brass "homebuilder shut-off valves" and although there is no noticeable leaking the smell does seem to be stronger in that area, and I have checked every other possibility. I've discounted the permeable fuel hose idea, because there is absolutely no fuel smell in the wings (after removing an inspection plate). I can live with it --- just want to know the cause. Gordon ----- Original Message ----- From: "kissell" Sent: Wednesday, April 01, 2009 5:24 PM Subject: Zenith701801-List: Re: Gasoline smell > > A little additional insight to the gas "smell". Per the Zenith materials list the 701 uses about 18 feet of fuel line. I just measured the circumference (C) of the new AS line at 1 5/8 inch. If you multiply this C by the 18 feet of line and assume about 80% of this computed area is in the cabin and fuse area, you end up with about 2 sq. feet of surface area that potentially can out-gas fumes. We all know that even a small amount of fuel can create a noticeable smell, it is possible the line I used is permeable to some of the VOC's in the fuel and might cause the "smell". The line that I just purchased is made by Parker and designed to prevent the out-gas problem. So if that is the source, then by replacement of the line with something designed for that problem, it should go away. If the line is not the problem, then I just spent $100 to eliminate the line as a source. > > Bob K. > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=237286#237286 > > > > > > > > > > > > > > ________________________________ Message 2 _____________________________________ Time: 11:33:44 AM PST US Subject: Zenith701801-List: Re: Gasoline smellGasoline smell From: "kissell" I did a little more research today and found the following. Per EPA study, rubber fuel line such as used on lawn mowers and RV equipment can out-gas as much as 5 gram (weight) of fuel per foot per day. Using this number I estimate that the lines in a 701 fuse and cockpit could out-gas about 0.424 liquid oz. per day. That is certainly enough to create a smell in the cabin. Also stated in the study was that replacing the lines with newer out-gas free lines could reduce the permeability by 95%. So many 701 seem to have the smell problem that it is unlikely a leak or we all don't know how to connect rubber hose without leaks. The best I can remember the hose I used came from Zenith with the kit. I might have bought or replaced it with hose from the local auto store, but it wasn't anything special as I recall. It is similar to lawnmower fuel line. Just another observation.. Bob Kissell Read this topic online here: http://forums.matronics.com/viewtopic.php?p=237401#237401 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith701801-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith701801-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/zenith701801-list Browse Digests http://www.matronics.com/digest/zenith701801-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.