---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Sat 11/08/08: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:24 AM - Re: 914 fuel sytem in 701 (Robert C Harrison) 2. 09:23 AM - Re: 914 fuel sytem in 701 (Noel Loveys) 3. 09:33 AM - Re: 914 fuel sytem in 701 (Gilles Thesee) 4. 11:19 AM - C box on 447 (lucien) 5. 12:00 PM - Re: 914 fuel sytem in 701 (Tracy) 6. 01:21 PM - Re: 914 fuel sytem in 701 (george may) 7. 03:11 PM - Re: 914 fuel sytem in 701 (Gilles Thesee) ________________________________ Message 1 _____________________________________ Time: 01:24:10 AM PST US From: "Robert C Harrison" Subject: RE: RotaxEngines-List: 914 fuel sytem in 701 Hi! Tracy It seems to me that your return to the left tank is so quick that it is overwhelming the pipe to the right tank. So increase the pipe diameter to the right tank across the "tee" Regards Bob Harrison G-PTAG Europa . -----Original Message----- From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Tracy Sent: 08 November 2008 04:10 Subject: RotaxEngines-List: 914 fuel sytem in 701 thought I would post this in the rotax list also and see if anyone has had a simaliar problem. I have a 701 with a 914 installed. I have both tanks teed together before the fuel shut off. I have the return installed in the left tank,I have just gottenit running I put about 3/4 of fuel inthe left tank and ran the engine. I noticed fuel running out the left wing and found the tank full!! after a few minutes it came down and leved both tanks .. I have the stock zenith caps. any sugestions? or am I going to have to only fill the laft tank half full. is ther a better way to get the fuel to level in both tanks quicker? anybody have the same issues with a 914? I know ther arent to many out there in a 701. Tracy Buttles ________________________________ Message 2 _____________________________________ Time: 09:23:28 AM PST US From: "Noel Loveys" Subject: RE: RotaxEngines-List: 914 fuel sytem in 701 Put a shut off on your right tank... leave it off until your left tank is at least a half a tank down. Noel -----Original Message----- From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Tracy Sent: Saturday, November 08, 2008 12:40 AM Subject: RotaxEngines-List: 914 fuel sytem in 701 thought I would post this in the rotax list also and see if anyone has had a simaliar problem. I have a 701 with a 914 installed. I have both tanks teed together before the fuel shut off. I have the return installed in the left tank,I have just gottenit running I put about 3/4 of fuel inthe left tank and ran the engine. I noticed fuel running out the left wing and found the tank full!! after a few minutes it came down and leved both tanks .. I have the stock zenith caps. any sugestions? or am I going to have to only fill the laft tank half full. is ther a better way to get the fuel to level in both tanks quicker? anybody have the same issues with a 914? I know ther arent to many out there in a 701. Tracy Buttles ________________________________ Message 3 _____________________________________ Time: 09:33:18 AM PST US From: Gilles Thesee Subject: Re: RotaxEngines-List: 914 fuel sytem in 701 Tracy a crit : > is ther a better way to get the fuel to level in both tanks quicker? > anybody have the same issues with a 914? > I know ther arent to many out there in a 701. > Teed wing tanks rarely work as expected. In our project, the fuel valve switches return lines as well as feed fuel lines. So the fuel goes back into the tank it came from. Best regards, -- Gilles http://contrails.free.fr ________________________________ Message 4 _____________________________________ Time: 11:19:32 AM PST US Subject: RotaxEngines-List: C box on 447 From: "lucien" Hi all, Is the C box usable on the 447? Reason I ask is, I'm thinking about a project for a 447 but I have a C box in 3.47:1 ratio that I'd like to reuse on it if possible. I know prop selection would be a separate issue, but I'd like to know if the C box will work on a 447 to begin with. Thanks, LS -------- LS Titan II SS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=213043#213043 ________________________________ Message 5 _____________________________________ Time: 12:00:34 PM PST US From: Tracy Subject: RotaxEngines-List: RE: 914 fuel sytem in 701 thanks for the info. im thinking which will work best ,being simple to operate and easy to mod in. I would have to get the right tank out and weld in a fitting and plum more lines to an aircraft already together. im thinking a colletor tank would be simplest. Tracy ________________________________ Message 6 _____________________________________ Time: 01:21:45 PM PST US From: george may Subject: RE: RotaxEngines-List: 914 fuel sytem in 701 Tracy-- Did you put a restriction in the return line? I believe that Rotax indic ates that the return line should be restricted to a cross section of 3mm or about 1/16 of an inch. This would slow the fuel movement and keep the fue l level consistent in both tanks. George May 601XL 912s > Date: Fri=2C 7 Nov 2008 20:09:48 -0800 > From: pbuttles@charter.net > To: rotaxengines-list@matronics.com > Subject: RotaxEngines-List: 914 fuel sytem in 701 > > > thought I would post this in the rotax list also and see if anyone has ha d a simaliar problem. > > I have a 701 with a 914 installed. > I have both tanks teed together before the fuel shut off. I have the ret urn installed > in the left tank=2CI have just gottenit running I put about 3/4 of fuel > inthe left tank and ran the engine. I noticed fuel running out the left w ing > and found the tank full!! after a few minutes it came down and leved bo th tanks > . > I have the stock zenith caps. > any sugestions? or am I going to have to only fill the laft tank half full. > is ther a better way to get the fuel to level in both tanks quicker? > anybody have the same issues with a 914? > I know ther arent to many out there in a 701. > > Tracy Buttles > =========== =========== =========== =========== > > > _________________________________________________________________ Windows Live Hotmail now works up to 70% faster. http://windowslive.com/Explore/Hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_fast er_112008 ________________________________ Message 7 _____________________________________ Time: 03:11:58 PM PST US From: Gilles Thesee Subject: Re: RotaxEngines-List: 914 fuel sytem in 701 george may a crit : > Tracy-- > Did you put a restriction in the return line? I believe that Rotax > indicates that the return line should be restricted to a cross section > of 3mm or about 1/16 of an inch. This would slow the fuel movement > and keep the fuel level consistent in both tanks. George and all, Our 914 Installation Manual specified : "The fuel reutrn must be a line of *low resistance*. Max tolerated pressure loss is *0.1 bar* (1.5 psi) between fuel pressure control and tank inlet with *both* electric fuel pumps in action." So in my opinion, the fuel return line should NOT be restricted. The 914 is different from the 912 series. Best regards, -- Gilles http://contrails.free.fr ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-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/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-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.