Zenith-List Digest Archive

Mon 02/09/09


Total Messages Posted: 18



Today's Message Index:
----------------------
 
     1. 07:33 AM - Re: 601-HD(s) landing gear (Barrenechea, Godo)
     2. 11:17 AM - Re: How should I seal a leaking fuel tank fitting? (Milburn W. Reed)
     3. 12:44 PM - Re: How should I seal a leaking fuel tank fitting? (Ken Arnold)
     4. 01:51 PM - Re: How should I seal a leaking fuel tank fitting? (William Dominguez)
     5. 01:59 PM - Fuel Pump Requirements on a Low Wing 601 (MHerder)
     6. 02:06 PM - Chat Room Reminder (George Race)
     7. 02:34 PM - Re: Fuel Pump Requirements on a Low Wing 601 (Peter W Johnson)
     8. 03:25 PM - Re: Fuel Pump Requirements on a Low Wing 601 (Paul Mulwitz)
     9. 03:53 PM - Re: Fuel Pump Requirements on a Low Wing 601 (Ken Lilja)
    10. 04:42 PM - Re: Fuel Pump Requirements on a Low Wing 601 (leinad)
    11. 04:44 PM - Re: Fuel Pump Requirements on a Low Wing 601 (Lawrence Webber)
    12. 05:50 PM - Re: Fuel Pump Requirements on a Low Wing 601 (Ashley)
    13. 06:27 PM - Re: Re: Fuel Pump Requirements on a Low Wing 601 (Peter W Johnson)
    14. 06:28 PM - Re: Fuel Pump Requirements on a Low Wing 601 (Peter W Johnson)
    15. 07:04 PM - Re: Fuel Pump Requirements on a Low Wing 601 (Roger & Lina Hill)
    16. 09:07 PM - Re: Fuel Pump Requirements on a Low Wing 601 (MHerder)
    17. 10:56 PM - Re: How should I seal a leaking fuel tank fitting? (Gary Gower)
    18. 11:50 PM - Re: New Panel Design (Terry Phillips)
 
 
 


Message 1


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    Time: 07:33:49 AM PST US
    From: "Barrenechea, Godo" <godofredo.barrenechea@hp.com>
    Subject: RE: 601-HD(s) landing gear
    Carlos, I suffered from the same, and took your first option. I filed the Gear Slides (6V5-2) in order to keep the 0.75" clearance between the two slides, accommodating the thickness of the horizontal steel tube. Since I'm building a tail dragger, I can't include the top and bottom nylon bearings that Larry calls for, but instead, I'm fitting an UHMP (Ultra High Molecular Weight Polyethylene) doubler along the ~10cm that the cross tube touches the slide. This should help in reducing the wearing of the slides. The solution used to be quite popular some years ago in this list, when I still thought of finishing this project in a couple of weekends... Cheers, Godo Barrenechea 601 HD (still in progress) Barcelona (Spain) ================================================================================== Time: 09:33:22 AM PST US Subject: Zenith-List: question: 601-HD(s) landing gear From: "Carlos Sa" <carlosfsa@yahoo.com> I just received some parts from ZAC (the first ones I bought since starting the project). Among them, 6L3-1, the main landing gear lower bearing support. The internal width of the part is almost 1mm (~0.75mm) less than the nominal 95 mm. On the other hand, my gear slide assembly, with a 0.75" spacer in place, is almost 96 mm wide. This adds to ~1.5 difference between the assembly and 6L3-1... I am going to contact ZAC and ask for the proper fix, but meanwhile, I would like to have your input, as some of you probably had the same problem. I see 3 possible fixes (keep in mind the skeleton is ready for riveting (clecoed): 1) file the gear slides so I can reduce the total width of the assembly; this would require a slight bend of the 2 gear ribs in order to keep the 0.75" spacing. I don't like this idea, because it might get me into trouble when I install the reinforcing extrusion, 6V11-5. It is already a tricky process with low tolerance. 2) file just the bottom outer surfaces of the slides so 6L3-1 fits. I doubt this is acceptable, as it reduces the thickness of the extrusion where it attaches to 6L3-1. 3) file the slides and add a shim (0.032", or 0.8mm) between the slides and the gear ribs. This seems appropriate, but I am uncertain about the shim. I searched AC 43-13, and found no use of the string "shim" in chapter 4. On the other hand, "zenair construction standards draft 1-07" says "The maximum shim thickness is equal to the fastener diameter". Comments, anyone? -------- CH601-HD, plans Montreal, Canada ________________________________ Message 2 _____________________________________ Time: 01:29:18 PM PST US From: LarryMcFarland <larry@macsmachine.com> Subject: Re: Zenith-List: question: 601-HD(s) landing gear Hi Carlos, If the fit outside 6V5-2 and inside of 6V11-5 for 6L3-1 is too broad, assuming the bungee cross tubes are welded already, I'd shim the 6V5-2 slides to get the spacing needed along their entire length, one or both sides as needed. The gap for the strut cross tube isn't an issue as it keeps the gear straight and only needs to have a 1/16 or so gap for travel sliding clearance. That work surface can be filed for clearance without any difficulty. I remember filing these surfaces to clear the tube and worrying. There is no visible wear between these parts. The strut bearing diameters do wear rapidly, so do fit up nylon bearings on the bottoms to match. Larry McFarland 601HDS at www.macsmachine.com


    Message 2


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    Time: 11:17:42 AM PST US
    From: "Milburn W. Reed" <milreed@directcon.net>
    Subject: Re: How should I seal a leaking fuel tank fitting?
    How is this test run? Google didn't know where to find this information. Milburn


    Message 3


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    Time: 12:44:59 PM PST US
    From: "Ken Arnold" <arno7452@bellsouth.net>
    Subject: Re: How should I seal a leaking fuel tank fitting?
    Good Test! Ken Arnold do not archive ----- Original Message ----- From: "Milburn W. Reed" <milreed@directcon.net> Sent: Monday, February 09, 2009 2:15 PM Subject: Re: Zenith-List: How should I seal a leaking fuel tank fitting? > <milreed@directcon.net> > > How is this test run? Google didn't know where to find this information. > Milburn > > >


    Message 4


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    Time: 01:51:53 PM PST US
    From: William Dominguez <bill_dom@yahoo.com>
    Subject: Re: How should I seal a leaking fuel tank fitting?
    This test is run by pressurizing the tank with balloons attached to the fittings and pumping air through the quick drain valve with a cheap air pump until one or both balloons inflate. Then use soapy water to look for air leaks. You can see the test in this picture, the air pump that I used is on the left side: http://picasaweb.google.com/billdomg/Wings#5300156820135627810 William Dominguez Zodiac 601XL Plans Miami Florida http://www.geocities.com/bill_dom ----- Original Message ----- From: "Milburn W. Reed" <milreed@directcon.net> Sent: Monday, February 09, 2009 2:15 PM Subject: Re: Zenith-List: How should I seal a leaking fuel tank fitting? > <milreed@directcon.net> > > How is this test run? Google didn't know where to find this information. > Milburn > > >


    Message 5


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    Time: 01:59:22 PM PST US
    Subject: Fuel Pump Requirements on a Low Wing 601
    From: "MHerder" <michaelherder@beckgroup.com>
    I'm building an HD. I still have to option to put a header tank in it but I'm not really fond of having fuel above my lap. I'm looking at puting a continental in there. Most o-200's that I've found don't have a mechical fuel pump, I'm told that one can be added but it seems costly. Would I require a fuel pump if I used a header tank? I want redundancy. So the question is, is there enough head pressure to feed a continental 200 with only the 1-1 1/2' of differential that there is between the bottom of a header tank and the carb? I'll have an electric fuel pump too, but I want the engine to still run if I have to shut down the power for some reason. Anybody have similar thoughts or concerns? Since most of the o-200s went into Cessna 150's, they just don;t seem to have fuel pumps too often. -------- One Rivet at a Time! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=229423#229423


    Message 6


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    Time: 02:06:00 PM PST US
    From: "George Race" <mykitairplane@mrrace.com>
    Subject: Chat Room Reminder
    Please join us for the Monday evening chat room starting around 8:00 PM Eastern Time. <http://www.mykitairplane.com/chat/> www.mykitairplane.com/chat/ George Do Not Archive


    Message 7


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    Time: 02:34:45 PM PST US
    From: "Peter W Johnson" <vk3eka@bigpond.net.au>
    Subject: Fuel Pump Requirements on a Low Wing 601
    I am building a 601XL with an O-200 on the front and looked at the HD header tank idea for the same reason. I have decided to go with William Wynne's method and use two fuel pumps in series (same as the Corvair) with one in operation at a time and a switch to change pumps. You could power one pump as a backup with a separate power source if you liked. Cheers Peter Wonthaggi Australia http://zodiac.cpc-world.com -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of MHerder Sent: Tuesday, 10 February 2009 8:59 AM Subject: Zenith-List: Fuel Pump Requirements on a Low Wing 601 I'm building an HD. I still have to option to put a header tank in it but I'm not really fond of having fuel above my lap. I'm looking at puting a continental in there. Most o-200's that I've found don't have a mechical fuel pump, I'm told that one can be added but it seems costly. Would I require a fuel pump if I used a header tank? I want redundancy. So the question is, is there enough head pressure to feed a continental 200 with only the 1-1 1/2' of differential that there is between the bottom of a header tank and the carb? I'll have an electric fuel pump too, but I want the engine to still run if I have to shut down the power for some reason. Anybody have similar thoughts or concerns? Since most of the o-200s went into Cessna 150's, they just don;t seem to have fuel pumps too often. -------- One Rivet at a Time! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=229423#229423


    Message 8


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    Time: 03:25:06 PM PST US
    From: Paul Mulwitz <psm@att.net>
    Subject: Re: Fuel Pump Requirements on a Low Wing 601
    Hi Michael, In your case, I would consider the additional cost of adding a mechanical fuel pump to be part of the necessary expense to use that engine. If you have no header tank and one electric fuel pump, then your engine's continued power requires the fuel pump to work all the time. It is only a little better with the header tank. If the header tank is low and the fuel pump goes out you have a similar situation. In my book, a low wing tank requires both a mechanical and electric fuel pump. That is the only way to avoid an engine failure related to a single fuel system problem - loss of the pump. Paul XL getting close do not archive At 01:58 PM 2/9/2009, you wrote: >I'm building an HD. I still have to option to put a header tank in >it but I'm not really fond of having fuel above my lap. I'm looking >at puting a continental in there. Most o-200's that I've found >don't have a mechical fuel pump, I'm told that one can be added but >it seems costly.


    Message 9


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    Time: 03:53:04 PM PST US
    From: Ken Lilja <planes_by_ken@bellsouth.net>
    Subject: Re: Fuel Pump Requirements on a Low Wing 601
    That fuel pump drive gear is about $850.00 You will probably have to have the case machined. I am installing a dual electrical system with an 8 amp secondary alternator. I will install 2 DIFFERENT types of electic pumps. I will use one to start and the other to fly. On the next flight I will switch the pump roles. 2 DIFFERENT pumps to prevent both pumps failing at the same time in service. Ken Lilja MHerder wrote: > > I'm building an HD. I still have to option to put a header tank in it but I'm not really fond of having fuel above my lap. I'm looking at puting a continental in there. Most o-200's that I've found don't have a mechical fuel pump, I'm told that one can be added but it seems costly. > > Would I require a fuel pump if I used a header tank? I want redundancy. So the question is, is there enough head pressure to feed a continental 200 with only the 1-1 1/2' of differential that there is between the bottom of a header tank and the carb? > > I'll have an electric fuel pump too, but I want the engine to still run if I have to shut down the power for some reason. > > Anybody have similar thoughts or concerns? Since most of the o-200s went into Cessna 150's, they just don;t seem to have fuel pumps too often. > > -------- > One Rivet at a Time! >


    Message 10


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    Time: 04:42:38 PM PST US
    Subject: Re: Fuel Pump Requirements on a Low Wing 601
    From: "leinad" <leinad@hughes.net>
    My fuel system also was based on William Wynne's design per his conversion manual from several years ago. Back then he recommended the mechanical corvair pump and a backup electric, but these were in parallel. Two check valves were used to prevent the fuel from back flowing through the other pump. Are the 2 electrics really suppose to be in series?? Dan vk3eka(at)bigpond.net.au wrote: > I am building a 601XL with an O-200 on the front and looked at the HD header > tank idea for the same reason. > I have decided to go with William Wynne's method and use two fuel pumps in > series (same as the Corvair) with one in operation at a time and a switch to > change pumps. You could power one pump as a backup with a separate power > source if you liked. > > Cheers > > Peter > Wonthaggi Australia > http://zodiac.cpc-world.com > > > -- -------- Scratch building XL with Corvair Engine Read this topic online here: http://forums.matronics.com/viewtopic.php?p=229453#229453


    Message 11


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    Time: 04:44:23 PM PST US
    From: Lawrence Webber <lawrencewebber@HOTMAIL.COM>
    Subject: Fuel Pump Requirements on a Low Wing 601
    Peter all my prayers for your fellow aussies in victoria who are coping with that awful fire hope its not near you Larry Webber corvair chugger rhode island> From: vk3eka@bigpond.net.au> To: zenith-list@matronics.com> Subject: RE: Zenith-List: Fuel Pump Requirement s on a Low Wing 601> Date: Tue=2C 10 Feb 2009 09:33:33 +1100> > --> Zenith- List message posted by: "Peter W Johnson" <vk3eka@bigpond.net.au>> > I am b uilding a 601XL with an O-200 on the front and looked at the HD header> tan k idea for the same reason.> I have decided to go with William Wynne's meth od and use two fuel pumps in> series (same as the Corvair) with one in oper ation at a time and a switch to> change pumps. You could power one pump as a backup with a separate power> source if you liked.> > Cheers> > Peter> Wo nthaggi Australia> http://zodiac.cpc-world.com> > > -----Original Message-- ---> From: owner-zenith-list-server@matronics.com> [mailto:owner-zenith-lis t-server@matronics.com] On Behalf Of MHerder> Sent: Tuesday=2C 10 February 2009 8:59 AM> To: zenith-list@matronics.com> Subject: Zenith-List: Fuel Pum rder" <michaelherder@beckgroup.com>> > I'm building an HD. I still have to option to put a header tank in it but> I'm not really fond of having fuel a bove my lap. I'm looking at puting a> continental in there. Most o-200's th at I've found don't have a mechical> fuel pump=2C I'm told that one can be added but it seems costly.> > Would I require a fuel pump if I used a heade r tank? I want redundancy. So> the question is=2C is there enough head pres sure to feed a continental 200> with only the 1-1 1/2' of differential that there is between the bottom of> a header tank and the carb?> > I'll have a n electric fuel pump too=2C but I want the engine to still run if I> have t o shut down the power for some reason.> > Anybody have similar thoughts or concerns? Since most of the o-200s went> into Cessna 150's=2C they just don =3Bt seem to have fuel pumps too often.> > --------> One Rivet at a Time!> > > > > Read this topic online here:> > http://forums.matronics.com/viewtop =====> > > _________________________________________________________________ Windows Live=99: E-mail. Chat. Share. Get more ways to connect. http://windowslive.com/explore?ocid=TXT_TAGLM_WL_t2_allup_explore_022009


    Message 12


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    Time: 05:50:41 PM PST US
    From: "Ashley" <ashleyw@gvtc.com>
    Subject: Re: Fuel Pump Requirements on a Low Wing 601
    I have an O-200 in my XL. I chose the two electric fuel pump option. I also added a second 8 ha battery to keep the pumps working if I lost the alt and main battery. (Pretty remote option as the main battery will run a pump and my Dynon for several hours.) The fuel pumps are the one supplied with the kit from Zenith. They put out about 2.5 psi static and with the engine wide open, the fuel pressure drops to about 0.4 psi. The engine runs fine with this pressure. These pumps do not have a restriction to flow if the pump is not working. I have the pumps in series and either pump will supply the engine without the other operating. I run both pumps for takeoff and landing and turn one off when away from the ground. With both pumps operating, the fuel pressure is about 4.5 psi. With both pumps OFF, it gets real quite real quick. I also looked at the mechanical pump option as I was overhauling the engine. Best I could figure was about $1200 for the gear and mechanical pump. The electric pump was about $40 and $15 for the battery. Hope this helps. Floyd Wilkes 601XL O-200 Phase I complete and having a ball! ----- Original Message ----- From: "MHerder" <michaelherder@beckgroup.com> Sent: Monday, February 09, 2009 3:58 PM Subject: Zenith-List: Fuel Pump Requirements on a Low Wing 601 > > I'm building an HD. I still have to option to put a header tank in it but > I'm not really fond of having fuel above my lap. I'm looking at puting a > continental in there. Most o-200's that I've found don't have a mechical > fuel pump, I'm told that one can be added but it seems costly. > > Would I require a fuel pump if I used a header tank? I want redundancy. > So the question is, is there enough head pressure to feed a continental > 200 with only the 1-1 1/2' of differential that there is between the > bottom of a header tank and the carb? > > I'll have an electric fuel pump too, but I want the engine to still run if > I have to shut down the power for some reason. > > Anybody have similar thoughts or concerns? Since most of the o-200s went > into Cessna 150's, they just don;t seem to have fuel pumps too often. > > -------- > One Rivet at a Time! > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=229423#229423 > > >


    Message 13


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    Time: 06:27:52 PM PST US
    From: "Peter W Johnson" <vk3eka@bigpond.net.au>
    Subject: Re: Fuel Pump Requirements on a Low Wing 601
    Dan, According to WW's 601 installation manual they are. If one fails the other pumps through the failed one. Cheers Peter -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of leinad Sent: Tuesday, 10 February 2009 11:42 AM Subject: Zenith-List: Re: Fuel Pump Requirements on a Low Wing 601 My fuel system also was based on William Wynne's design per his conversion manual from several years ago. Back then he recommended the mechanical corvair pump and a backup electric, but these were in parallel. Two check valves were used to prevent the fuel from back flowing through the other pump. Are the 2 electrics really suppose to be in series?? Dan vk3eka(at)bigpond.net.au wrote: > I am building a 601XL with an O-200 on the front and looked at the HD header > tank idea for the same reason. > I have decided to go with William Wynne's method and use two fuel pumps in > series (same as the Corvair) with one in operation at a time and a switch to > change pumps. You could power one pump as a backup with a separate power > source if you liked. > > Cheers > > Peter > Wonthaggi Australia > http://zodiac.cpc-world.com > > > -- -------- Scratch building XL with Corvair Engine Read this topic online here: http://forums.matronics.com/viewtopic.php?p=229453#229453


    Message 14


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    Time: 06:28:42 PM PST US
    From: "Peter W Johnson" <vk3eka@bigpond.net.au>
    Subject: Fuel Pump Requirements on a Low Wing 601
    Larry, Thanks for that. I am 50kms away from the nearest fire so no problems at the moment. With 175 people dead so far these are by far the worst Australia has ever seen. Thanks Peter _____ From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Lawrence Webber Sent: Tuesday, 10 February 2009 11:30 AM Subject: RE: Zenith-List: Fuel Pump Requirements on a Low Wing 601 Peter all my prayers for your fellow aussies in victoria who are coping with that awful fire hope its not near you Larry Webber corvair chugger rhode island > From: vk3eka@bigpond.net.au > To: zenith-list@matronics.com > Subject: RE: Zenith-List: Fuel Pump Requirements on a Low Wing 601 > Date: Tue, 10 Feb 2009 09:33:33 +1100 > <vk3eka@bigpond.net.au> > > I am building a 601XL with an O-200 on the front and looked at the HD header > tank idea for the same reason. > I have decided to go with William Wynne's method and use two fuel pumps in > series (same as the Corvair) with one in operation at a time and a switch to > change pumps. You could power one pump as a backup with a separate power > source if you liked. > > Cheers > > Peter > Wonthaggi Australia > http://zodiac.cpc-world.com > > > -----Original Message----- > From: owner-zenith-list-server@matronics.com > [mailto:owner-zenith-list-server@matronics.com] On Behalf Of MHerder > Sent: Tuesday, 10 February 2009 8:59 AM > To: zenith-list@matronics.com > Subject: Zenith-List: Fuel Pump Requirements on a Low Wing 601 > > > I'm building an HD. I still have to option to put a header tank in it but > I'm not really fond of having fuel above my lap. I'm looking at puting a > continental in there. Most o-200's that I've found don't have a mechical > fuel pump, I'm told that one can be added but it seems costly. > > Would I require a fuel pump if I used a header tank? I want redundancy. So > the question is, is there enough head pressure to feed a continental 200 > with only the 1-1 1/2' of differential that there is between the bottom of > a header tank and the carb? > > I'll have an electric fuel pump too, but I want the engine to still run if I > have to shut down the power for some reason. > > Anybody have similar thoughts or concerns? Since most of the o-200s went > into Cessna 150's, they just don;t seem to have fuel pumps too often. > > -------- > One Rivet at a Time! > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=229423#229423 > > > > > > > > > > _=============== > > > _____ Windows LiveT: E-mail. Chat. Share. Get more ways to connect. Check it out. <http://windowslive.com/explore?ocid=TXT_TAGLM_WL_t2_allup_explore_022009>


    Message 15


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    Time: 07:04:38 PM PST US
    From: "Roger & Lina Hill" <hills@sunflower.com>
    Subject: Fuel Pump Requirements on a Low Wing 601
    I have a HDS with a header tank, and I can tell you for a fact that when the tank gets below 1/2 full, there is not enough fuel pressure to operate an low pressure (0.5 psi) posa carb without a fuel pump, and that's in level flight. I understand why you might not want a header tank, on my plane, I had the header tank leak onto the floor of the plane, that was scary, so I suggest to everyone don't carpet your floor if you do have one, so the fuel will just leak out of the plane and not get soaked up by the carpet. Also, your insurance company might require a header tank, so better to check with them as well. Roger -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of MHerder Sent: Monday, February 09, 2009 3:59 PM Subject: Zenith-List: Fuel Pump Requirements on a Low Wing 601 I'm building an HD. I still have to option to put a header tank in it but I'm not really fond of having fuel above my lap. I'm looking at puting a continental in there. Most o-200's that I've found don't have a mechical fuel pump, I'm told that one can be added but it seems costly. Would I require a fuel pump if I used a header tank? I want redundancy. So the question is, is there enough head pressure to feed a continental 200 with only the 1-1 1/2' of differential that there is between the bottom of a header tank and the carb? I'll have an electric fuel pump too, but I want the engine to still run if I have to shut down the power for some reason. Anybody have similar thoughts or concerns? Since most of the o-200s went into Cessna 150's, they just don;t seem to have fuel pumps too often. -------- One Rivet at a Time! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=229423#229423


    Message 16


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    Time: 09:07:38 PM PST US
    Subject: Re: Fuel Pump Requirements on a Low Wing 601
    From: "MHerder" <michaelherder@beckgroup.com>
    two folks on this threa now have mentioned a "gear" and the cost range has been 850 to 1200. The only mechanical fuel pump that I can find is one that rides on the camshaft. For the o 0 that was originally gravity fed in a o 200 my calculations would include, machining the case to accept thefuel pump, possibly getting a new camshaft (one with the proper lobe) that the fuel pump rides on and possibly a new carb that accepts the increased fuel pressure. This makes the "deal" that I was looking at on the engine not so appealing. I sincerely appreciate everyones input. I think everyone has brought to the table some intersting points. Each comment has very helpful, dual electric, mech and electric, back up battery with dual electric pump all valid options... But is there another geared pump otion that im not aware of? Something that installs to the back accessory case or where the vacuum pump would install? -------- One Rivet at a Time! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=229496#229496


    Message 17


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    Time: 10:56:58 PM PST US
    From: Gary Gower <ggower_99@yahoo.com>
    Subject: Re: How should I seal a leaking fuel tank fitting?
    The test is to pressure test the gasoline tank before its instalation in th e wing. The Zenith gasoline tanks, as we know, are welded of thin aluminum, so they need very little pressure for the test.- Using excess compressed air-c ould deform or ruin the tank. - What I did (was told by old timers) is to seal with a-piece of inner tube and a hose clamp the gas inlet.- Using 2 of the outlets of the tank (if it has more, seal them temporary)- in one install a temporary-fuel valv e to-keep the air inside. in the other outlet install-a-condom-well sealed to the outlet-(these they say are leak proof:-) or a balloon.- - - Though-the fuel valve fill-air with a hand pump or very carefully with the air compressor-untill the balloon is inflated. close the valve-and first check-all around (outside) the tank-(welds) -including the temp orary seals and the fuel valve with soapy water.- Bubbles will show leaks . The ultimate test will keep the condom or balloon infalted for several hour s (overnigth). -- Hope this helps. Saludos Gary Gower. --- On Mon, 2/9/09, Milburn W. Reed <milreed@directcon.net> wrote: From: Milburn W. Reed <milreed@directcon.net> Subject: Re: Zenith-List: How should I seal a leaking fuel tank fitting? <milreed@directcon.net> How is this test run? Google didn't know where to find this information. Milburn =0A=0A=0A


    Message 18


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    Time: 11:50:45 PM PST US
    From: Terry Phillips <ttp44@rkymtn.net>
    Subject: Re: New Panel Design
    Hi Dan Assuming that you are still the Zenith-List's inside guy at Dynon, I'd like to pass along something for the Dynon wish list: I'd really like to see a USB port through which the system could just dump all the data to a USB drive in a CSV format. Then one could use it for a data recorder during Phase I testing. And, in a more solemn vein, it would function as a dirt cheap black box if an accident happened. Is such a thing feasible? Maybe it's already there? Thanks for listening. Terry At 02:20 PM 7/29/2008 -0700, you wrote: >Thanks for the suggestion.. Actually a couple people have suggested I move >them further in.. LOL.. I honestly just randomly taped them to the panel >to show them off. Depending on how things work out, I may start with the >7's and upgrade to a pair of 10's eventually once we release our Com radio >and transponder. ( I won't need the panel space for radios ) > >Why not Grand Rapids? LOL.. Because Dynons are the Best! and the price is >right. ;) > >Just in case anyone out there was wondering how my fuselage just seemed to >have appeared.. I was the person who bought the $1500 deal in Lynnwood, WA >about a week ago. It was right down the road from me, and the workmanship >was excellent. It was just a little more complete than a Quickbuild. > >Dan Lykowski >Dynon Avionics Software Engineer >601XL Terry Phillips ZBAGer ttp44~at~rkymtn.net Corvallis MT 601XL/Jab 3300 s .. l .. o .. o .. w build kit - Tail, flaps, & ailerons are done; working on the wings http://www.mykitlog.com/N47TP/




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