---------------------------------------------------------- Zenith601-List Digest Archive --- Total Messages Posted Sun 07/28/13: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:02 AM - Re: Zenith601-List Digest: 1 Msgs - 07/27/13 (Airvair601) 2. 02:43 PM - CO (BobbyPaulk@comcast.net) ________________________________ Message 1 _____________________________________ Time: 04:02:18 AM PST US Subject: Zenith601-List: Re: Zenith601-List Digest: 1 Msgs - 07/27/13 From: Airvair601 Wonder if this is an issue? Easy to check. Need to do it early on! With our funky exhaust it might be a challenge Sent from my iPad On Jul 28, 2013, at 3:00 AM, Zenith601-List Digest Server wrote: > * > > ================================================= > Online Versions of Today's List Digest Archive > ================================================= > > Today's complete Zenith601-List Digest can also be found in either of the > two Web Links listed below. The .html file includes the Digest formatted > in HTML for viewing with a web browser and features Hyperlinked Indexes > and Message Navigation. The .txt file includes the plain ASCII version > of the Zenith601-List Digest and can be viewed with a generic text editor > such as Notepad or with a web browser. > > HTML Version: > > http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 13-07-27&Archive=Zenith601 > > Text Version: > > http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 13-07-27&Archive=Zenith601 > > > =============================================== > EMail Version of Today's List Digest Archive > =============================================== > > > ---------------------------------------------------------- > Zenith601-List Digest Archive > --- > Total Messages Posted Sat 07/27/13: 1 > ---------------------------------------------------------- > > > Today's Message Index: > ---------------------- > > 1. 06:02 AM - CO (BobbyPaulk@comcast.net) > > > > ________________________________ Message 1 _____________________________________ > > > Time: 06:02:24 AM PST US > From: BobbyPaulk@comcast.net > Subject: Zenith601-List: CO > > > Guys, > I had posted some time back about CO in the cockpit of my 601XL ( Jabiru ). I had > circled a friends hangar 3 times at another airport at 80 MPH. ( high angle > of attack ) When I straightened up to fly home I was nauseous and smelled exhaust > fumes very strongly. The CO monitor pill was solid black. I opened both cabin > air vents even though it was about 40 deg. outside. I had a very bad headache > for the next 4 ~ 5 Hrs. > I extended my exhaust pipe another 5 or 6 inches with a 45 deg. turn down and it > seemed to help. I thought I had sealed the firewall completely but one day when > I had a light in the engine compartment and the hangar was dark I looked in > the cockpit & found two small leaks in the firewall right behind the lower engine > mounts. This was on the quick build kit. > While my engine was running very rich I noticed the black stains on the belly just > behind the firewall were running forward back toward the low pressure area > at the firewall. I have tried adding a skirt to the lower cowl with no improvement. > > I also saw the black stains around the belly access panel. Summer seems to be O.K. > due to the air vents being open and pressurizing the cockpit somewhat, winter > when the vents are closed is when I experience the worst smells. The cockpit > on the XL has a strong negative pressure - you can check this by getting your > shirt sleeve or shop rag close to the canopy rail where it is not sealed. > The exhaust extension, re-sealing the firewall, and the engine finally running > correctly have all helped but I still get a whiff of CO particularly at a high > angle of attack or slow speed. > I am still trying to find a way to seal the 6 built in leaks in the Jabiru exhaust > connections. > Any ideas?? Wraps usually burn away in 4 or 5 hours. > > Bobby ( age 75 ) > Zodiac 601 XL "B" > Jabiru 3300 S/N 1141 > Sensenich 64" x 51" Prop > Bing Carb 260 Main & 285 Needle Jet > Status - Flying 185 hrs. > > Do Not Archive > > > > > > > > ________________________________ Message 2 _____________________________________ Time: 02:43:42 PM PST US From: BobbyPaulk@comcast.net Subject: Zenith601-List: CO I should have said the cockpit has positive pressure instead of neg. It has less positive pressure with the outside air vents closed. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith601-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith601-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/zenith601-list Browse Digests http://www.matronics.com/digest/zenith601-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.