---------------------------------------------------------- Kitfox-List Digest Archive --- Total Messages Posted Sun 06/17/07: 9 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:51 AM - Re: rotax pulse pump leaking weep hole (dwight purdy) 2. 06:06 AM - Re: Re: KitFox 2.fuel level problem,cant see fuel in tanks (Noel Loveys) 3. 06:59 AM - Re: rotax pulse pump leaking weep hole (Tom Jones) 4. 09:38 AM - Re: rotax pulse pump leaking weep hole (Noel Loveys) 5. 02:04 PM - Re: KitFox 2.fuel level problem,cant see fuel in tanks (wingnut) 6. 06:05 PM - Impulse Line (Jim Crowder) 7. 06:20 PM - Re: Impulse Line (Jim_and_Lucy Chuk) 8. 08:28 PM - Re: rotax pulse pump leaking weep hole (369PL) 9. 11:04 PM - Re: Impulse Line (Jim Crowder) ________________________________ Message 1 _____________________________________ Time: 01:51:42 AM PST US From: dwight purdy Subject: Re: Kitfox-List: rotax pulse pump leaking weep hole I think I can help. I had the exact the same problem when I switched from a 532 to a 503. The problem is too long of a pulse line. The port on the 532 and 582 is on the mag end close to the fire wall. On the 503 it is on the pto end. I moved the pump to the front of the engine mount (still horizontal) and no more weeping in 460 hours. Someone in the Rotax repair business suggested this to me. Dwight Purdy Model ll Indiana At 12:31 PM 6/16/2007 -0700, you wrote: > >The pulse pump on my 503 rotax leaks fuel out the weep hole. It is >installed according to the kitfox manual. It is mounted high on the fire >wall in a horizontal position with the weep hole on the bottom. I tried a >new pump and rerouting the pulse line up over the carb flanges but it did >not even slow the amount of fuel leaking. I am using 30R9 rubber fuel >injection hose for the pulse line. It l;eaks about 1/2 to 1 ounce per >hour of flight. > >I asked this question on the Kolb list. They seem to think something is >amiss. They don't seem to have this problem Some think the fuel pump >diaphram is leaking. I bought a new pump but it does the same. Both >pumps I have tried will hold a vacum in the pulse chamber. I am out of >ideas on how to fix this. > >-------- >Tom Jones >Classic IV, Phase one >503, Warp >Ellensburg, WA > > >Read this topic online here: > >http://forums.matronics.com/viewtopic.php?p=118753#118753 > > >-- >12:50 PM -- ________________________________ Message 2 _____________________________________ Time: 06:06:08 AM PST US From: "Noel Loveys" Subject: RE: Kitfox-List: Re: KitFox 2.fuel level problem,cant see fuel in tanks Luis: Don't you do a flight plan and navigation before every flight that takes you cross country? I'm hardly ever a mile off course or a half a gallon off on my calculations. That's not to say a timer isn't a handy item to have to log airtime. Regarding to seeing fuel in the tanks... I have the same problem. its very hard to see the levels in the sight tubes when I'm in the seat. I was considering trying a couple of bicycle mirrors to try to get a better angle on the sight tubes. Noel Loveys, RPP, AME intern Campbellton, Newfoundland, Canada Kitfox Mod III-A, 582, B box, Ivo IFA Aerocet 1100s noelloveys@yahoo.ca Do not archive > -----Original Message----- > From: owner-kitfox-list-server@matronics.com > [mailto:owner-kitfox-list-server@matronics.com] On Behalf Of wingnut > Sent: Friday, June 15, 2007 11:05 AM > To: kitfox-list@matronics.com > Subject: Kitfox-List: Re: KitFox 2.fuel level problem,cant > see fuel in tanks > > > > > > will I have to use a timer? > > > Do your wing tanks not have the sight tubes or are they just > hard to see? I find mine are difficult to see in flight. It > helps if I rock the wings to slosh things around a little. > > I still use a timer though. I like to compare my actual fuel > burn against what I expected throughout the trip. That way, I > know way ahead of time if that 20knt head wind is going to > add an extra stop. > > -------- > Luis Rodriguez > Model IV 1200 > Rotax 912UL > Flying Weekly > Laurens, SC (34A) > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=118581#118581 > > > > > > > > ________________________________ Message 3 _____________________________________ Time: 06:59:37 AM PST US Subject: Kitfox-List: Re: rotax pulse pump leaking weep hole From: "Tom Jones" > I moved the pump to the front of the engine mount (still > horizontal) and no more weeping in 460 hours. Thanks Dwight, that makes sense. I'll make the change and test it out when the wind dies down in a couple days. -------- Tom Jones Classic IV, Phase one 503, Warp Ellensburg, WA Read this topic online here: http://forums.matronics.com/viewtopic.php?p=118868#118868 ________________________________ Message 4 _____________________________________ Time: 09:38:22 AM PST US From: "Noel Loveys" Subject: RE: Kitfox-List: rotax pulse pump leaking weep hole The question I was getting ready to ask was along the same lines. I was going to ask if the gas was coming form the fuel lines or up the impulse line and how long the impulse line is. Heavy clear tubing is recommended for impulse line so you can see what is going on in it. The shorter the impulse line the better but of course vibration and heat have to be taken into consideration. Some where it is written that the pumps should be mounted horizontally with the impulse line entering from the bottom so any excess gas/oil form the base of the engine will drain out of the pump. Hope this helps Noel Loveys, RPP, AME intern Campbellton, Newfoundland, Canada Kitfox Mod III-A, 582, B box, Ivo IFA Aerocet 1100s noelloveys@yahoo.ca Do not archive > -----Original Message----- > From: owner-kitfox-list-server@matronics.com > [mailto:owner-kitfox-list-server@matronics.com] On Behalf Of > dwight purdy > Sent: Sunday, June 17, 2007 6:20 AM > To: kitfox-list@matronics.com > Subject: Re: Kitfox-List: rotax pulse pump leaking weep hole > > > > I think I can help. I had the exact the same problem when I > switched from a > 532 to a 503. The problem is too long of a pulse line. The > port on the 532 > and 582 is on the mag end close to the fire wall. On the 503 > it is on the > pto end. I moved the pump to the front of the engine mount (still > horizontal) and no more weeping in 460 hours. Someone in the > Rotax repair > business suggested this to me. > > > Dwight Purdy > Model ll > Indiana > > > At 12:31 PM 6/16/2007 -0700, you wrote: > > > > >The pulse pump on my 503 rotax leaks fuel out the weep hole. It is > >installed according to the kitfox manual. It is mounted > high on the fire > >wall in a horizontal position with the weep hole on the > bottom. I tried a > >new pump and rerouting the pulse line up over the carb > flanges but it did > >not even slow the amount of fuel leaking. I am using 30R9 > rubber fuel > >injection hose for the pulse line. It l;eaks about 1/2 to 1 > ounce per > >hour of flight. > > > >I asked this question on the Kolb list. They seem to think > something is > >amiss. They don't seem to have this problem Some think the > fuel pump > >diaphram is leaking. I bought a new pump but it does the > same. Both > >pumps I have tried will hold a vacum in the pulse chamber. > I am out of > >ideas on how to fix this. > > > >-------- > >Tom Jones > >Classic IV, Phase one > >503, Warp > >Ellensburg, WA > > > > > > > > > >Read this topic online here: > > > >http://forums.matronics.com/viewtopic.php?p=118753#118753 > > > > > > > > > > > > > > > > > > > > > > > > > > > >-- > >12:50 PM > > > -- > > > > > > > > ________________________________ Message 5 _____________________________________ Time: 02:04:37 PM PST US Subject: Kitfox-List: Re: KitFox 2.fuel level problem,cant see fuel in tanks From: "wingnut" > Don't you do a flight plan and navigation before every flight that takes you cross country? I'm hardly ever a mile off course or a half a gallon off on my calculations. Yes but you never know if you're going to encounter higher head winds than you expected. With a long cross country in a 95 knt airplane, a little bit of extra head wind can make a huge difference in your range. Cross checking my actual position and actual fuel level against the flight plan was part of my training. -------- Luis Rodriguez Model IV 1200 Rotax 912UL Flying Weekly Laurens, SC (34A) Read this topic online here: http://forums.matronics.com/viewtopic.php?p=118974#118974 ________________________________ Message 6 _____________________________________ Time: 06:05:02 PM PST US From: "Jim Crowder" Subject: Kitfox-List: Impulse Line Hey you'al, what is an impulse line? It is a term I have not encountered before. When I see something new to me, it is a chance to learn. I have installed a lot of fuel pumps on aircraft, motor homes, etc., but none had such a line that I am aware of. >You wrote: >Heavy clear tubing is recommended for impulse line so you can see what is going on in it. Jim Crowder S5/3300 Jabiru (Engine swap in process) North Front Range of Colorado ________________________________ Message 7 _____________________________________ Time: 06:20:30 PM PST US From: "Jim_and_Lucy Chuk" Subject: RE: Kitfox-List: Impulse Line The impulse line goes from the crankcase to the Mikuni fuel pump on a 2 stroke engine. Perhaps some fourstrokes use one, but I don't know about that for sure. Jim Chuk Avid Mk IV >From: "Jim Crowder" >To: "Kitfox List" >Subject: Kitfox-List: Impulse Line >Date: Sun, 17 Jun 2007 19:03:58 -0600 > > >Hey you'al, what is an impulse line? It is a term I have not encountered >before. When I see something new to me, it is a chance to learn. I have >installed a lot of fuel pumps on aircraft, motor homes, etc., but none had >such a line that I am aware of. > > > >You wrote: > >Heavy clear tubing is recommended for impulse line so you can see what is >going on in it. > >Jim Crowder >S5/3300 Jabiru (Engine swap in process) >North Front Range of Colorado > > _________________________________________________________________ Dont miss your chance to WIN $10,000 and other great prizes from Microsoft ________________________________ Message 8 _____________________________________ Time: 08:28:49 PM PST US Subject: Kitfox-List: Re: rotax pulse pump leaking weep hole From: "369PL" I also had the same problem on a 503 I used to fly on a n3pup. The pule line was to long. Their is a specification of no longer than 12". If memory serves me well. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=119048#119048 ________________________________ Message 9 _____________________________________ Time: 11:04:25 PM PST US From: "Jim Crowder" Subject: RE: Kitfox-List: Impulse Line What purpose does it serve? It seems a good way to get fuel into the crankcase, something I would think was very undesirable. Please understand I am sure it does serve a purpose, it just is not apparent to me. Jim Crowder -----Original Message----- From: owner-kitfox-list-server@matronics.com [mailto:owner-kitfox-list-server@matronics.com]On Behalf Of Jim_and_Lucy Chuk Sent: Sunday, June 17, 2007 7:18 PM Subject: RE: Kitfox-List: Impulse Line The impulse line goes from the crankcase to the Mikuni fuel pump on a 2 stroke engine. Perhaps some fourstrokes use one, but I don't know about that for sure. Jim Chuk Avid Mk IV >From: "Jim Crowder" >To: "Kitfox List" >Subject: Kitfox-List: Impulse Line >Date: Sun, 17 Jun 2007 19:03:58 -0600 > > >Hey you'al, what is an impulse line? It is a term I have not encountered >before. When I see something new to me, it is a chance to learn. I have >installed a lot of fuel pumps on aircraft, motor homes, etc., but none had >such a line that I am aware of. > > > >You wrote: > >Heavy clear tubing is recommended for impulse line so you can see what is >going on in it. > >Jim Crowder >S5/3300 Jabiru (Engine swap in process) >North Front Range of Colorado > > _________________________________________________________________ Dont miss your chance to WIN $10,000 and other great prizes from Microsoft ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kitfox-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kitfox-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/kitfox-list Browse Digests http://www.matronics.com/digest/kitfox-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.