Zenith701801-List Digest Archive

Mon 09/08/08


Total Messages Posted: 24



Today's Message Index:
----------------------
 
     1. 12:51 AM - Re - Question about fuel flow from only one tank? (Peter Thomson)
     2. 04:37 AM - Chat Room Reminder (George Race)
     3. 05:32 AM - Re: Re - Question about fuel flow from only one tank? (Larry Egelhoff)
     4. 06:02 AM - Question about fuel flow from one tank (Joe Spencer)
     5. 06:21 AM - Re: Re - Question about fuel flow from only one tank? (Inge)
     6. 07:05 AM - Re: Re: Slats again ad nausium (Larry)
     7. 08:16 AM - Re: Zenith701801-List Digest: 18 Msgs - 09/07/08 (george.mueller@aurora.org)
     8. 08:19 AM - Question about fuel flow from one tank (Dan)
     9. 08:32 AM - Re: 701 static port (Jeffrey A Beachy)
    10. 09:32 AM - Re: Question about fuel flow from one tank (Gary Gower)
    11. 09:35 AM - Re: Re: Zenith701801-List Digest: 18 Msgs - 09/07/08 (Keith Ashcraft)
    12. 11:33 AM - Open Hangar Day, 19-20 Sept (Stanley Challgren)
    13. 11:46 AM - Re: Question about fuel flow from one tank (Curt Thompson)
    14. 01:00 PM - Re: Question about fuel flow from one tank (sonar1@cox.net)
    15. 01:12 PM - Re: A question of horsepower... (n85ae)
    16. 02:02 PM - Re: Re: Question about fuel flow from one tank (Curt Thompson)
    17. 02:34 PM - Re: Re: A question of horsepower... (JG)
    18. 02:37 PM - Re: Question about fuel flow from one tank (sonar1@cox.net)
    19. 03:46 PM - Re: Re - Question about fuel flow from only one tank? (NYTerminat@aol.com)
    20. 09:22 PM - Re: CanZac floats (carl)
    21. 09:22 PM - Re: Fuel return (carl)
    22. 09:22 PM - Test (carl)
    23. 09:22 PM - test msg (carl)
    24. 09:56 PM - Re: CanZac floats (mwpicard)
 
 
 


Message 1


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    Time: 12:51:38 AM PST US
    From: "Peter Thomson" <peterlthomson@gmail.com>
    Subject: Re - Question about fuel flow from only one tank?
    Curt, perfect timing ! I've flown my CZAW 701 for about 9 mths and 150 hrs. In that time, it has always drained from the RIGHT TANK first. After my 1st flight I drained the RHS tank manually on ground to make sure the fuel kept coming from the left. It did. But last week during a 3 flight, I decided to select the left for some time. When I did this and switched back to both, the LHS tank kept draining more than the right ! To the extent that I selected RHS for a time. It made me think perhaps it was something in the Andair fuel valve. However, I see it has now reverted back to the old procedure, draining the RHS tank first. Beats me I was told has been doing this since new (2005). Bit more, fly slats off, VG's wings and elevator. 16l/hr of E10 95octane blend, 80kts Peter CH701/912ULS


    Message 2


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    Time: 04:37:42 AM PST US
    From: "George Race" <mykitairplane@mrrace.com>
    Subject: Chat Room Reminder
    Please join us for our Monday evening chat room starting around 8:00 PM Eastern Time. <blocked::blocked::blocked::blocked::http://www.mykitairplane.com/chat/> http://www.mykitairplane.com/chat/ George CH-701 - N73EX - IT FLYS! Do Not Archive


    Message 3


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    Time: 05:32:59 AM PST US
    Subject: Re: Re - Question about fuel flow from only one tank?
    From: Larry Egelhoff <egelhoffl@juno.com>
    I purchased my 701 already built. The previous owner/builder had the same situation as reported here. He finally determined that the drain balance depended on the dominant direction of turns..... Left turns moved more fuel to the right tank and vice versa. I have not flown enough to verify this. Larry, Tennessee On Mon, 8 Sep 2008 14:51:10 +0700 "Peter Thomson" <peterlthomson@gmail.com> writes: > <peterlthomson@gmail.com> > > Curt, perfect timing ! > > I've flown my CZAW 701 for about 9 mths and 150 hrs. In that time, > it > has always drained from the RIGHT TANK first. After my 1st flight I > drained the RHS tank manually on ground to make sure the fuel kept > coming from the left. It did. > > But last week during a 3 flight, I decided to select the left for > some time. When I did this and switched back to both, the LHS tank > kept draining more than the right ! To the extent that I selected > RHS > for a time. > > It made me think perhaps it was something in the Andair fuel valve. > > However, I see it has now reverted back to the old procedure, > draining > the RHS tank first. > > Beats me I was told has been doing this since new (2005). > > Bit more, fly slats off, VG's wings and elevator. 16l/hr of E10 > 95octane blend, 80kts > > Peter > CH701/912ULS > > > > > > > ____________________________________________________________ Boost your productivity with new office software. Click now! http://thirdpartyoffers.juno.com/TGL2141/fc/Ioyw6i3mEauvVkNJPaVsjUohTySwvSzrniwiDbHAT1yCvNtvPkPaSu/


    Message 4


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    Time: 06:02:37 AM PST US
    From: "Joe Spencer" <jpspencer@cableone.net>
    Subject: Question about fuel flow from one tank
    Morning The flow from one tank is common to many planes and is usually because the rudder isn't trimmed perfectly. You might check yours and see if that's it in your case. Joe


    Message 5


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    Time: 06:21:27 AM PST US
    Subject: Re: Re - Question about fuel flow from only one tank?
    From: "Inge" <inge@flaten.no>
    My CZAW 701 (540 hours, 120 hours by me, slats off, Feathers VGs wings and elevator, 912/80 Hp, 14 liters per hour, 90 miles per hour) also drains the right hand tank first, as did my previous plane (ICP Bingo/HKS, 430 hours). If it is the plane or the pilot? Most people get a consistent flow from both tanks, but then again, most people do not x-country as long as it takes to be sure there is a difference. A friend reported this phenomenon on his Kitfox 3. I noticed the same in another friend's slick, racy 130 kts CTSW during a six hour x-country. Discussing this phenomenon (is it likely to start draining from the other tank soon?) over the high seas is certainly one of the stronger spices of life. By the way, as you may have come to expect, these four planes all level out between their tanks while left for a while. Read this topic online here: http://forums.matronics.com/viewtopic.php?p 3153#203153


    Message 6


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    Time: 07:05:25 AM PST US
    From: Larry <lrm@skyhawg.com>
    Subject: Re: Slats again ad nausium
    Talking about them again is a good thing. Lots of new people and old one with bad memories. If we didn't start repeating ourselves, we would run out of things to say. Larry N1345L Jean-Paul Roy wrote: > John, I don't see any risk of you getting pitched off this group ! Flicka is wayyyyyyyyyy ahead of you. lolll > Please do not archive > > Jean-Paul Roy > > --- En date de : Dim, 7.9.08, John Bolding <jnbolding1@teleshare.net> a crit : > > De: John Bolding <jnbolding1@teleshare.net> > Objet: Re: Zenith701801-List: Re: Slats again ad nausium > : zenith701801-list@matronics.com > Date: dimanche 7 Septembre 2008, 12 h 59 > > <jnbolding1@teleshare.net> > > I KNEW this would get all wound up again so at the risk of getting pitched > off the list I would like to point out a couple of things that have been > found out by TESTING, not just reading about it in the Zenith brochure. > > You are partially correct in your statements. > The CG WILL change as you remove 13# that is ahead of the CG. Easy to > figure where the CG now lies and a log book entry is required. > > It is a little more involved when discussing the new center of lift however.. > We have been led to believe, by reading the information that Chris has > published on the subject, that the slats DO provide lift at cruise angles > of attack. Everybody bought into that notion until Gilpin (and others after > him, including me) discovered that pitch trim settings did NOT change from > back to back flights with the only difference being that one was WITH slats > and one was WITHOUT slats. > I know this has been duplicated on several 701's but I have seen no info on > > 801's or other airplanes equipped with slats. > I don't know if that test in itself is definitive (I'd bet big money > that it > is) but it certainly casts doubt on the notion that the slat is doing > something for you at cruise. > > Damn I hope we haven't gotten off on another month talking about slats !!! > LO&SLO John > > > ----- Original Message ----- > From: "George Race" <mykitairplane@mrrace.com> > To: <zenith701801-list@matronics.com> > Sent: Sunday, September 07, 2008 9:15 AM > Subject: RE: Zenith701801-List: Re: Elevator Authority > > > >> <mykitairplane@mrrace.com> >> >> First I am no expert, but the following just FYI and to think about >> >> The Slat is actually considered as part of the wing surface and form. >> Removing the slats and brackets will slightly change the lift of the wing >> due to surface being lessened. It will reduce weight slightly, and also >> affect the Weight & Balance as it is measured as a percentage of MAC, >> > from > >> the FRONT of the slat. >> >> As I said, just something to think about from a not expert. >> >> George >> N73EX - Now Flying >> >> > > > Dcouvrez les photos les plus intressantes du jour. > http://www.flickr.com/explore/interesting/7days/ > > ------------------------------------------------------------------------ > > > Checked by AVG - http://www.avg.com > >


    Message 7


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    Time: 08:16:05 AM PST US
    Subject: Re: Zenith701801-List Digest: 18 Msgs - 09/07/08
    From: george.mueller@aurora.org
    Regarding the question about unequal draining of the fuel tanks, I have a fuel system setup that I am very happy with and I think adds extra safety. My tanks equalize when standing so the levels are the same, and during flight they empty at the same rate. When I refuel, I always add about the same amount to each tank to top off the tanks. I start with both tanks connected to each other with two tees on that line (behind the pilots backrest). One tee goes down to a facet electric fuel pump. The other tee goes down to an andair check valve. The output from the facet pump goes to the zenith gascolator and the output from the check valve goes to the other input on the zenith gascolator. From the gascolator forward it is per plans with a fuel shutoff in the cockpit. I did fuel flow tests with this setup. First I clamped off the line with the facet pump, and got good fuel flow through the line with the check valve. This simulated a fuel pump clog (although when off the facet pumps allow fuel to flow through). Then I clamped off the line with the check valve to simulate a clog or failure of the check valve and got good fuel flow. (The check valve is there to prevent the fuel pump from pumping fuel up through that redundant fuel line back to the tanks). With both lines open and fuel pump running I got a faster fuel flow (I measured gallons per hour for all of these variations but I don't recall what they were now). The backup electric pump offers redundancy in case of a failure of the mechanical pump, and helps to avoid vapor lock ( I have never had any trouble with starting hot this summer). My procedure is, when starting, to pressurize the fuel system with the electric fuel pump, then shut it off. I then start the engine. This insures that the mechanical pump is working. After the engine is running I turn on the electric pump and leave it running. I have a fuel pressure gauge in the cockpit to monitor fuel pressure. George in Milwaukee N701GM 45 hours flying


    Message 8


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    Time: 08:19:33 AM PST US
    From: Dan <dwilde@clearwire.net>
    Subject: Question about fuel flow from one tank
    Has the uneven flow from the wing tanks ever resulted in fuel starvation? I can't see how it could unless both tanks were dry. Dan Wilde N948DW


    Message 9


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    Time: 08:32:51 AM PST US
    Subject: Re: 701 static port
    From: Jeffrey A Beachy <beachyjeff@juno.com>
    I put in two static ports on the fuselage sides near the tail. I used A5 rivets in place of A4 rivets in the vertical L angles, then popped out the stem and hooked up plastic tubing to the inside of the rivets. Works fine and reasonably accurate. Jeff Beachy --does anyone have a static port in there 701 or just leave them open? ____________________________________________________________ Click for FHA loan, $0 lender fees, low rates & approvals nationwide http://thirdpartyoffers.juno.com/TGL2141/fc/Ioyw6i3mItjlRKCfMRolWbYRuQKKEghBl1ZkNkp2D29ZmTz4eAA63g/


    Message 10


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    Time: 09:32:32 AM PST US
    From: Gary Gower <ggower_99@yahoo.com>
    Subject: Re: Question about fuel flow from one tank
    In fact the only time one tank was empty or almost empty (impossible to be sure with electric gauges) was the first time it happened...- our only co ncern was that the system could suck air from the empty tank and vapor lock ,-or stop the engine.-- Flying over mountains is not fun to look for a place to land.- No place to experiment IF the mechanical pump can keep pumping air from one tank and gasoline from the other :-)-- to keep both carburator bowls f ull all the time. The next Saturday we installed the two fuel valves.- - Saludos Gary Gower. --- On Mon, 9/8/08, Dan <dwilde@clearwire.net> wrote: From: Dan <dwilde@clearwire.net> Subject: Zenith701801-List: Question about fuel flow from one tank Has the uneven flow from the wing tanks ever resulted in fuel starvation? I can't see how it could unless both tanks were dry. Dan Wilde N948DW =0A=0A=0A


    Message 11


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    Time: 09:35:52 AM PST US
    From: Keith Ashcraft <keith.ashcraft@itt.com>
    Subject: Re: Zenith701801-List Digest: 18 Msgs - 09/07/08
    George, Could you post a drawing or pictures of this setup. Also, what engine are y ou using? Thanks, Keith CH701 -- scratch N 38.9940 W 105.1305 Alt. 9,100' *************************************************************************** ************ george.mueller@aurora.org<mailto:george.mueller@aurora.org> wrote: Regarding the question about unequal draining of the fuel tanks, I have a f uel system setup that I am very happy with and I think adds extra safety. My tanks equalize when standing so the levels are the same, and during flig ht they empty at the same rate. When I refuel, I always add about the same amount to each tank to top off the tanks. I start with both tanks connected to each other with two tees on that line (behind the pilots backrest). One tee goes down to a facet electric fuel p ump. The other tee goes down to an andair check valve. The output from th e facet pump goes to the zenith gascolator and the output from the check va lve goes to the other input on the zenith gascolator. From the gascolator forward it is per plans with a fuel shutoff in the cockpit. I did fuel flow tests with this setup. First I clamped off the line with t he facet pump, and got good fuel flow through the line with the check valve . This simulated a fuel pump clog (although when off the facet pumps allow fuel to flow through). Then I clamped off the line with the check valve t o simulate a clog or failure of the check valve and got good fuel flow. (T he check valve is there to prevent the fuel pump from pumping fuel up throu gh that redundant fuel line back to the tanks). With both lines open and f uel pump running I got a faster fuel flow (I measured gallons per hour for all of these variations but I don't recall what they were now). The backup electric pump offers redundancy in case of a failure of the mech anical pump, and helps to avoid vapor lock ( I have never had any trouble w ith starting hot this summer). My procedure is, when starting, to pressuri ze the fuel system with the electric fuel pump, then shut it off. I then s tart the engine. This insures that the mechanical pump is working. After the engine is running I turn on the electric pump and leave it running. I have a fuel pressure gauge in the cockpit to monitor fuel pressure. George in Milwaukee N701GM 45 hours flying -- ************************************* Keith Ashcraft ITT Industries Advanced Engineering & Sciences 5009 Centennial Blvd. Colorado Springs, CO 80919 (719) 599-1787 -- work (719) 332-4364 -- cell keith.ashcraft@itt.com<mailto:keith.ashcraft@itt.com> keith.ashcraft1@us.army.mil<mailto:keith.ashcraft1@us.army.mil> ________________________________ This e-mail and any files transmitted with it may be proprietary and are in tended solely for the use of the individual or entity to whom they are addr essed. If you have received this e-mail in error please notify the sender. Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of ITT Corporati on. The recipient should check this e-mail and any attachments for the pres ence of viruses. ITT accepts no liability for any damage caused by any viru s transmitted by this e-mail.


    Message 12


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    Time: 11:33:01 AM PST US
    From: Stanley Challgren <challgren@mac.com>
    Subject: Open Hangar Day, 19-20 Sept
    Denver Area Zen Guys: I previously attended a Zenith Air Open Hangar day when I had a 601. I found it very interesting and informative. This year's schedule is more ambitious and there is outside participation that I am interested in. As I near completion of my 701/3300 project I would like to attend this year's Open Hangar days but it is a long drive from the Denver area for one person. (Note: Several activities have been added on the 19th that are not mentioned in the card invite they sent out). Is there anyone from the Denver area that would be interested in driving or flying to Mexico, MO for the event? Stan Challgren 303-674-6910 Evergreen, CO N701VG/3300


    Message 13


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    Time: 11:46:21 AM PST US
    From: "Curt Thompson" <Curt.Thompson@verizon.net>
    Subject: Question about fuel flow from one tank
    Dan, My concern is that this (fuel from only one tank) is a symptom of one fuel line being blocked. How would you know until one tank ran dry and the spinny thing on the front of the CH701 stopped turning? I think I would be sweaty bullets every time that tank ran dry. Curt -----Original Message----- From: owner-zenith701801-list-server@matronics.com [mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of Dan Sent: Monday, September 08, 2008 8:19 AM Subject: Zenith701801-List: Question about fuel flow from one tank Has the uneven flow from the wing tanks ever resulted in fuel starvation? I can't see how it could unless both tanks were dry. Dan Wilde N948DW


    Message 14


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    Time: 01:00:45 PM PST US
    Subject: Re: Question about fuel flow from one tank
    From: "sonar1@cox.net" <sonar1@cox.net>
    I had this problem too. Landed several times with 10 gallons on one side, and 1 or less on the other. I did a test with two cut-off soda bottles for tanks "t"- ing down to one line - all quarter inch, and found that a very small bubble was all it took for the fuel to not flow. In every test however, when the flowing tank was empty, the other one started flowing. In the airplane I could see an occasional bubble in the fuel line. Used my tv camera on a wire in the fuel tank, and found that the finger screen does not let the bubbles out. Don't know how they got in there in the first place, but they would not go through the screen, even in a full tank. I saw the tests, but put in two valves anyway. My fuel now goes to two separate valves at my feet to a ACS gascolator on the firewall. I can run one or both tanks, and feel sooo much better. I think this is the best solution..........Fred Sanford........N9701 Read this topic online here: http://forums.matronics.com/viewtopic.php?p 3260#203260


    Message 15


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    Time: 01:12:21 PM PST US
    Subject: Re: A question of horsepower...
    From: "n85ae" <n85ae@yahoo.com>
    I never saw any responses to Ben's post, but I for one paid attention. My Kitfox with it's 125 hp Continental is as tame as they get for example in a power off stall, but power on with it's high lift wing and flaperon's it will fly at insane nose high attitudes before violently snapping into a wing dropping stall. Ben's post is thought provoking because high power engines with high lift wings make you feel pretty invincible when you fly them, but they can get you into flight regime's that produce pretty unexpected results when things don't do what you expect. Thanks for the post Ben. Jeff > Yup... My 801 has TOO much power. It has only tried to kill me once because of it and I won't try that trick again, The details are................. I tried a full flaps, stick all the way back, brakes locked take off at minimum weight. Plane rolled about 80 feet, rotated and climbed in a flat attitude, airspeed indicator was even showing anything so it was less then 20 mph. Got to about 50 feet agl and the thing decided to roll inverted. The flaperons were not effective because of the slow air speed passing over them but the big prop and all the extra HPhad a tremendous torque roll happening. I reduced power, stepped on the rudder and pushed the nose over all in about 1/2 second. Another second or two and I would have crashed. This puts a new meaning to getting on the "front" side of the power curve.... Never again will I try to get it in the air till I see at at least 30 mph on the ASI. Read this topic online here: http://forums.matronics.com/viewtopic.php?p 3261#203261


    Message 16


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    Time: 02:02:50 PM PST US
    From: "Curt Thompson" <Curt.Thompson@verizon.net>
    Subject: Re: Question about fuel flow from one tank
    Joe, Are the finger screens you wrote about in the tank? If it is only draining from the left tank and you shut off the left tank valve does the fuel start flowing from the right tank? Then if you open the left valve again does it start flowing from both? Curt -----Original Message----- From: owner-zenith701801-list-server@matronics.com [mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of sonar1@cox.net Sent: Monday, September 08, 2008 1:00 PM Subject: Zenith701801-List: Re: Question about fuel flow from one tank I had this problem too. Landed several times with 10 gallons on one side, and 1 or less on the other. I did a test with two cut-off soda bottles for tanks "t"- ing down to one line - all quarter inch, and found that a very small bubble was all it took for the fuel to not flow. In every test however, when the flowing tank was empty, the other one started flowing. In the airplane I could see an occasional bubble in the fuel line. Used my tv camera on a wire in the fuel tank, and found that the finger screen does not let the bubbles out. Don't know how they got in there in the first place, but they would not go through the screen, even in a full tank. I saw the tests, but put in two valves anyway. My fuel now goes to two separate valves at my feet to a ACS gascolator on the firewall. I can run one or both tanks, and feel sooo much better. I think this is the best solution..........Fred Sanford........N9701


    Message 17


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    Time: 02:34:50 PM PST US
    From: "JG" <vgstol@bigpond.net.au>
    Subject: Re: A question of horsepower...
    Really good cautions from both Jeff and Ben. "....high power engines with high lift wings make you feel pretty invincible when you fly them...." and "...This puts a new meaning to getting on the "front" side of the power curve...." I know of a couple of 701's that have been considerably 'crunched' on take-off by this 'torque roll' reaction . An analysis of one such incident in a Savannah is at http://www.stolspeed.com/id/31 Yes, we feel invincible in these aircraft, but some caution is needed with such high power at very low airspeed. When it goes wrong it happens real quick, with little chance to recover.... JG ----- Original Message ----- From: n85ae To: zenith701801-list@matronics.com Sent: Tuesday, September 09, 2008 6:12 AM Subject: Zenith701801-List: Re: A question of horsepower... I never saw any responses to Ben's post, but I for one paid attention. My Kitfox with it's 125 hp Continental is as tame as they get for example in a power off stall, but power on with it's high lift wing and flaperon's it will fly at insane nose high attitudes before violently snapping into a wing dropping stall. Ben's post is thought provoking because high power engines with high lift wings make you feel pretty invincible when you fly them, but they can get you into flight regime's that produce pretty unexpected results when things don't do what you expect. Thanks for the post Ben. Jeff > Yup... My 801 has TOO much power. It has only tried to kill me once because of it and I won't try that trick again, The details are................. I tried a full flaps, stick all the way back, brakes locked take off at minimum weight. Plane rolled about 80 feet, rotated and climbed in a flat attitude, airspeed indicator was even showing anything so it was less then 20 mph. Got to about 50 feet agl and the thing decided to roll inverted. The flaperons were not effective because of the slow air speed passing over them but the big prop and all the extra HPhad a tremendous torque roll happening. I reduced power, stepped on the rudder and pushed the nose over all in about 1/2 second. Another second or two and I would have crashed. This puts a new meaning to getting on the "front" side of the power curve.... Never again will I try to get it in the air till I see at at least 30 mph on the ASI. Read this topic online here: http://forums.matronics.com/viewtopic.php?p 3261#203261


    Message 18


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    Time: 02:37:13 PM PST US
    Subject: Re: Question about fuel flow from one tank
    From: "sonar1@cox.net" <sonar1@cox.net>
    Yes, the finger screens were supplied with the kit, and go inside the tank. I potted a small tv camera with epoxy, and stuck in down into the tank to watch the bubbles. I have full control over the fuel - that's the way it should be. I usually do an hour from each tank, rarely turning them both on at the same time. ....Fred.....N9701 Read this topic online here: http://forums.matronics.com/viewtopic.php?p 3273#203273


    Message 19


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    Time: 03:46:09 PM PST US
    From: NYTerminat@aol.com
    Subject: Re: Re - Question about fuel flow from only one tank?
    Larry, I believe that there is a lot of truth to what you said, also I find that if you have a slight uncoordinated flight it will favor one or the other tank. I also have the individual fuel shut off valve for each tank and use them if they become too uneven. More important is if you park on uneven ground you can shut off one of the tanks so that the high one won't overflow into the lower one, as Gary mentioned. Any unbalance in my tanks is balanced out when the plane sits on my level hanger floor. Bob Spudis N701ZX/ 164hrs In a message dated 9/8/2008 8:34:28 A.M. Eastern Daylight Time, egelhoffl@juno.com writes: I purchased my 701 already built. The previous owner/builder had the same situation as reported here. He finally determined that the drain balance depended on the dominant direction of turns..... Left turns moved more fuel to the right tank and vice versa. I have not flown enough to verify this. Larry, Tennessee **************Psssst...Have you heard the news? There's a new fashion blog, plus the latest fall trends and hair styles at StyleList.com. (http://www.stylelist.com/trends?ncid=aolsty00050000000014)


    Message 20


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    Time: 09:22:56 PM PST US
    From: "carl" <b.carl@sympatico.ca>
    Subject: Re: CanZac floats
    Testing Carl


    Message 21


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    Time: 09:22:56 PM PST US
    From: "carl" <b.carl@sympatico.ca>
    Subject: Re: Fuel return
    Philip The purpose of running a fuel return line is to bring fresh (read cool) fuel to the engine fuel system. A return to the engine compartment gascolator would probably create a loop that would collect more heat and increase susceptibility for vapour lock. Carl ----- Original Message ----- From: philip smith To: zenith701801-list@matronics.com Sent: Sunday, September 07, 2008 7:43 PM Subject: Zenith701801-List: Fuel return I posted this a while back but did not get definitive answers. The Rotax 912ULS I'm hanging on my CH-701 has a fitting on the top of the fuel rail that says "return line to tank" in the Rotax installation manual. Some have said just to block it off - others said they plumbed it back to a "line from the tank". I imagine that this line is to prevent fuel vaporization. I have installed a Spruce gascolator ahead of the firewall it has a 1/8 npt fitting in the top for "fuel primer". Would it work to run a 1/4 hose to this fitting - I don't want to run another line back through the cockpit if I don't have to. Planning to use 91 octane mogas - field elevation is 4000ft with hot summers. Thanks Phil


    Message 22


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    Time: 09:22:57 PM PST US
    From: "carl" <b.carl@sympatico.ca>
    Subject: Test
    Testing Carl


    Message 23


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    Time: 09:22:57 PM PST US
    From: "carl" <b.carl@sympatico.ca>
    Subject: test msg
    Testing Carl


    Message 24


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    Time: 09:56:25 PM PST US
    Subject: Re: CanZac floats
    From: "mwpicard" <mwpicard@gmail.com>
    Just FYI for whomever is following the CanZac floats thread. Having heard nothing from Mark despite his promises, I canceled my order sending CanZac and Michael Heintz of QSP in Cloverdale (who took my order and collected a deposit of several thousand $ in advance) notification about 2 weeks ago now. Quality Sports Planes with whom it has been a joy to deal with returned my deposit right away. They had been trying to get a hold of Mark for weeks but he never got back to them as far as I know. (side note: I was part of the QSP builder assist program and let me tell you - it goes way beyond simple assistance. There is no way I would be enjoying my fly off time now without Doug and Lori at the QSP Cloverdale facility. There is a commnity of experts there to help and advise. All folks with 25+ years in aviation that just like to help "youngsters" get flying... I think this beats building it in a garage...) Mark did not acknowledge my order cancellation. He also received cancellations and aborted orders from a number of others including Alvin who started this thread. Alvin has gone with Puddle Jumper Floats I believe and others have gone with Full Lotus. I am looking at a carbon fibre amphib floats from Italy (made for Savannahs etc) which seems excellent. Contact me for details as I will know more soon. The more people that buy at the same time the lower the price (especially if the floats get shipped to the same address). Zenith really needs to sort out a reliable manufacturer for their float design. Canzac has a great web site promising like 8 different types of floats and Mark Townsend is a well meaning, talented guy but it seems like he has over promised, cant deliver, and now is hiding from his own clients. Ex-cients. Martin Picard Read this topic online here: http://forums.matronics.com/viewtopic.php?p 3336#203336




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