---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Sat 03/13/10: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:52 PM - Mogas in my Chang update (vectorwarbirds@aol.com) 2. 04:25 PM - Air start leak (KingCJ6@aol.com) 3. 04:55 PM - Re: Air start leak (Jim) ________________________________ Message 1 _____________________________________ Time: 02:52:53 PM PST US Subject: Yak-List: Mogas in my Chang update From: vectorwarbirds@aol.com Someone asked me if the hoses I was testing in Mogas were US or Chinese. Well since I fly a Nanchang I don't think testing US hose would be much good to me! So yes all testing (soaking) in Mogas with Ethanol at about 5 to 8% according to my fuel tester. Today I pulled the main tank hoses between the outer wings and the stub wi ngs. I believe this is a good indication as these hoses are standing in fuel 100% of the time. Both hoses are Chinese and since my aircraft was manufactured in 1985 I can only vouch for that year and above, but that is 25 years ago. Both hoses show no deterioration or swelling, they look new. They are not brittle or otherwise effected. This was the same resu lt from my hose soak test on the bench negating raw edge swelling. By the way I also soaked the carb diaphragm and only noticed raw edge swelling as well the central section was not effected. I checked my Mogas tanker meter on my truck today as well, 5359 gallons of Mogas going through my CJ since 2004. This is just my CJ, not the other or the Yak 18T. So those are my results to date. Given this and 1400hrs of flying on Mogas and 100LL I will continue to use it. What you gentlem en do is your decision. Tally Ho! TGB ________________________________ Message 2 _____________________________________ Time: 04:25:47 PM PST US From: KingCJ6@aol.com Subject: Yak-List: Air start leak We have a leak in the air start distributor/spider gasket between the uni t and the triangular mounting plate. There are 3 nuts that hold this flange on, covered by the square solenoid unit which is secured with 4 bo lts. I see no way to get to 2 of the 3 nuts as they are blind and have insufficient clearance to remove without hitting the flange. Any experie nced R&R=99 ers on the list with hints on this task? Dave ________________________________ Message 3 _____________________________________ Time: 04:55:09 PM PST US From: "Jim" Subject: Re: Yak-List: Air start leak Dave They are difficult to reach, but they can be removed, I took a open end wrench and bent it to fit behind the base where the nuts are, just take your time. Jim ----- Original Message ----- From: KingCJ6@aol.com To: yak-list@matronics.com Sent: Saturday, March 13, 2010 4:21 PM Subject: Yak-List: Air start leak We have a leak in the air start distributor/spider gasket between the unit and the triangular mounting plate. There are 3 nuts that hold this flange on, covered by the square solenoid unit which is secured with 4 bolts. I see no way to get to 2 of the 3 nuts as they are blind and have insufficient clearance to remove without hitting the flange. Any experienced R&R=99ers on the list with hints on this task? Dave ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message yak-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Yak-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/yak-list Browse Digests http://www.matronics.com/digest/yak-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.