---------------------------------------------------------- L29-List Digest Archive --- Total Messages Posted Sun 04/03/16: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:45 PM - Re: Re: Nitrogen Loss (Anthony Royal) ________________________________ Message 1 _____________________________________ Time: 06:45:56 PM PST US From: Anthony Royal Subject: Re: L29-List: Re: Nitrogen Loss I tightened everysingle fitting in the main nitrogen supply from the nose a ll the way to therear pressure gauge, braking valves on the rudder peddle a nd the brake valvebeside the front stick. Front emergency system flawless. My arms look like I=99ve been fighting with a wild cat.In my case, I found several connections, that still had the original safetywire, that I t ightened the fitting by a turn or more. The packing nut for the nitropurge valve was loose and the check valve in the fill line to the nitro tankshad a bad place in the flare and the internal rubber seal was pretty hard ( Ito ok it apart) which could allow nitro to flow out the fill valve.=C2- As o f today, I have mine down to 0.6 atm perhour loss. Nothing else I have done has made it any better. So, right now Ishould be good for about 10 days, n ot factoring into brake usage. I=99m going toreplace the check valve if I can get one from the Czech Republic or convert to the high pressure sc hrader valve. I believethis will take care of the rest of the 0.6 atm probl em. I made a solid flat rubber washer and put in the nitro fill cover/cap. When I remove the cover, the rubber has a small bubble in it so it seems th ere is some leakage coming from somewhere. Right now, I can live with the small amount of leakage but good info to kno w and thank you for passing it along! But that $500 sniffer hurts. My bothe r in law works for a gas company so I could get a propane sniffer from him on loan. On Saturday, April 2, 2016 11:09 AM, N777ZE wrote: We use whats called bleed air, 97 nitrogen 3 percent butane, and a robinair e flammable gas sensor.=C2- I mentioned this to tom schnell at u-ia and i t helped them on their 29.=C2- The sniffer is aboit 500$ though.=C2- I have one for work that has a goose neck that makes it easy to get in weird places. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=454468#454468 =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. S - - =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message l29-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/L29-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/l29-list Browse Digests http://www.matronics.com/digest/l29-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.