Zenith-List Digest Archive

Tue 01/20/09


Total Messages Posted: 15



Today's Message Index:
----------------------
 
     1. 12:58 PM - Re: Cell phones and flying (Rhino)
     2. 12:59 PM - Re: Internet and flying (Rhino)
     3. 02:12 PM - Re: Question about the incidence change in the Zodiac 650 (Juan Vega)
     4. 04:26 PM - Re: Spinners (leinad)
     5. 04:55 PM - Leaky Prosealed Tank (leinad)
     6. 05:07 PM - Re: Leaky Prosealed Tank (Carlos Sa)
     7. 05:32 PM - Re: Leaky Prosealed Tank (T. Graziano)
     8. 05:36 PM - Re: Leaky Prosealed Tank ()
     9. 05:40 PM - Re: Re: Spinners (jaybannist@cs.com)
    10. 05:51 PM - Re: Leaky Prosealed Tank (leinad)
    11. 06:21 PM - Re: Spinners (leinad)
    12. 07:05 PM - Re: Re: Spinners (jaybannist@cs.com)
    13. 07:22 PM - Ground block (Bill Naumuk)
    14. 07:56 PM - Re: Re: Spinners (Roger & Lina Hill)
    15. 11:24 PM - Re: Leaky Prosealed Tank (Trainnut01@aol.com)
 
 
 


Message 1


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    Time: 12:58:11 PM PST US
    Subject: Re: Cell phones and flying
    From: "Rhino" <bsimmons@rainbowdata.com>
    rsteele(at)rjsit.com wrote: > I understand the reasoning here. What I don't understand is how this works in Europe and Canada, where it is legal to use cell phones in planes while the FCC insists we can't in the US. Seems to me either we have a very poor cellular infrastructure or the FCC is blowing smoke. Smoke. Sort of. First, the regulation cited above is in part 22 of CFR 47. That part deals with the 800 Mhz band only. There are no such prohibitions in the other bands and very few cell phones are still in the 800 Mhz band. The guy who wrote that particular regulation for the FCC is actually a GA pilot. http://www.pilotsofamerica.com/forum/showthread.php?t=23309 Second, the 'problems' cited with cell towers from an aircraft aloft are based on high altitude airliners, and high speeds that could conceiveably make tower 'tracking' extremely difficult. Tooling around in your little Zenith isn't going to get you seen by very many additional towers. And God knows your speed won't be a problem. Third, actual measured tests of cell phones in high altitude, high speed aircraft have demonstrated that none of those perceived problems actually exist. They also demonstrated that cell phones do not interfere with aircraft systems. Imagine that. -------- Bob Simmons CH 750!!! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=225896#225896


    Message 2


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    Time: 12:59:48 PM PST US
    Subject: Re: Internet and flying
    From: "Rhino" <bsimmons@rainbowdata.com>
    Sprint Wi Fi card are not 800 Mhz, and are therefore not prohibited by that regulation. See the other discussion thread. -------- Bob Simmons CH 750!!! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=225897#225897


    Message 3


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    Time: 02:12:30 PM PST US
    From: Juan Vega <amyvega2005@earthlink.net>
    Subject: Re: Question about the incidence change in the Zodiac
    650 one has nothing to do with the other. -----Original Message----- >From: Ken Lilja <planes_by_ken@bellsouth.net> >Sent: Jan 19, 2009 5:00 PM >To: zenith-list@matronics.com >Subject: Re: Zenith-List: Question about the incidence change in the Zodiac 650 > > >I guess I see it as 2 degrees less that is needed for rotation. >Ken >Juan Vega wrote: >> >> pop off has nothing to do with incendence of wing, but the landing gear set up. if the wheels are aft of the cg line, it takes back stick to unstick the plane. if you have the wheels in closer to the cg, the plane takes of on its own with the right trim in place. >> >> Juan >> > >


    Message 4


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    Time: 04:26:52 PM PST US
    Subject: Re: Spinners
    From: "leinad" <leinad@hughes.net>
    Jay, My spinner weighs about 2 lb 6 oz. This "seams" heavy to me. Did you by chance weigh yours before installing it? Dan jaybannist(at)cs.com wrote: > Dan, > > I used the spinner from Van's that WW recommends. It has a bulkhead behind the prop and one in front of the prop. It was fairly easy to install and runs true. I can't imagine how a spinner would work with only one bulkhead. > > Jay in Dallas > Do not archive > > > > > > -- -------- Scratch building XL with Corvair Engine Read this topic online here: http://forums.matronics.com/viewtopic.php?p=225922#225922


    Message 5


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    Time: 04:55:56 PM PST US
    Subject: Leaky Prosealed Tank
    From: "leinad" <leinad@hughes.net>
    All, I've assembled my fuel tanks with proseal and rivets. I put about 1/2 psi air in them and have a clear tygon tubing with red food dye attached to a door jamb as pressure indicator. I pump air into the tank with a bicycle pump. I raise the level of the fluid 13.8 inches to give my 1/2 psi and have a pointer to show where I stop adding air. My problem is that I've tested 2 of the 4 wing tanks and they both leaked! The first leaked down several inches in about 10 minutes and I was able to find the leak with sudsy water. The second took an hour to leak down an inch and I haven't been able to find the leak. I'm reluctant to put more pressure in the tanks. Has anyone gone through this, and what was the solution to both finding and fixing the leaks? I can't even get my hand through the filler, so applying more goo from inside seams impossible. Solutions I've considered have been to cut a large access hole in the back of the tank, patch my leaks from inside then patch the access hole. Another thought was form a U shaped bead of aluminum to wrap around the leaky joint, with plenty of proseal thus forming an fix from the outside. But I still need to find the slow leak on tank #2. If I'm not clear about my methods I'm going to post some pictures on the web site: http://daniel.dempseyfamily.us Dan Dempsey -------- Scratch building XL with Corvair Engine Read this topic online here: http://forums.matronics.com/viewtopic.php?p=225925#225925 Attachments: http://forums.matronics.com//files/fuelsender_730.jpg http://forums.matronics.com//files/leakdetect_805.jpg


    Message 6


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    Time: 05:07:40 PM PST US
    Subject: Re: Leaky Prosealed Tank
    From: Carlos Sa <carlossa52@gmail.com>
    Dan, most of what I learned about this type of sorcery was from RV builders (web sites and matronics archives). I remember reading about somebody using a syringe to inject proseal (?) and fix a leak. Good luck Carlos 2009/1/20 leinad <leinad@hughes.net> > > All, > I've assembled my fuel tanks with proseal and rivets. I put about 1/2 psi > air in them and have a clear tygon tubing with red food dye attached to a > door jamb as pressure indicator. I pump air into the tank with a bicycle > pump. I raise the level of the fluid 13.8 inches to give my 1/2 psi and > have a pointer to show where I stop adding air. My problem is that I've > tested 2 of the 4 wing tanks and they both leaked! The first leaked down > several inches in about 10 minutes and I was able to find the leak with > sudsy water. The second took an hour to leak down an inch and I haven't > been able to find the leak. I'm reluctant to put more pressure in the > tanks. Has anyone gone through this, and what was the solution to both > finding and fixing the leaks? I can't even get my hand through the > filler, so applying more goo from inside seams impossible. Solutions I've > considered have been to cut a large access hole in the back of the tank, > patch my leaks from inside then ! > patch the access hole. Another thought was form a U shaped bead of > aluminum to wrap around the leaky joint, with plenty of proseal thus forming > an fix from the outside. But I still need to find the slow leak on tank > #2. > If I'm not clear about my methods I'm going to post some pictures on the > web site: http://daniel.dempseyfamily.us > Dan Dempsey > > -------- > Scratch building XL with Corvair Engine > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=225925#225925 > > > Attachments: > > http://forums.matronics.com//files/fuelsender_730.jpg > http://forums.matronics.com//files/leakdetect_805.jpg > >


    Message 7


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    Time: 05:32:46 PM PST US
    From: "T. Graziano" <tonyplane@bellsouth.net>
    Subject: Re: Leaky Prosealed Tank
    May not have a leak in #2 . Make sure your temp is stable If I remember correctly, PV=rT. Pressure X Volume = gas constant X absolute Temp ----- Original Message ----- From: Carlos Sa To: zenith-list@matronics.com Sent: Tuesday, January 20, 2009 7:07 PM Subject: Re: Zenith-List: Leaky Prosealed Tank Dan, most of what I learned about this type of sorcery was from RV builders (web sites and matronics archives). I remember reading about somebody using a syringe to inject proseal (?) and fix a leak. Good luck Carlos 2009/1/20 leinad <leinad@hughes.net> All, I've assembled my fuel tanks with proseal and rivets. I put about 1/2 psi air in them and have a clear tygon tubing with red food dye attached to a door jamb as pressure indicator. I pump air into the tank with a bicycle pump. I raise the level of the fluid 13.8 inches to give my 1/2 psi and have a pointer to show where I stop adding air. My problem is that I've tested 2 of the 4 wing tanks and they both leaked! The first leaked down several inches in about 10 minutes and I was able to find the leak with sudsy water. The second took an hour to leak down an inch and I haven't been able to find the leak. I'm reluctant to put more pressure in the tanks. Has anyone gone through this, and what was the solution to both finding and fixing the leaks? I can't even get my hand through the filler, so applying more goo from inside seams impossible. Solutions I've considered have been to cut a large access hole in the back of the tank, patch my leaks from inside then ! patch the access hole. Another thought was form a U shaped bead of aluminum to wrap around the leaky joint, with plenty of proseal thus forming an fix from the outside. But I still need to find the slow leak on tank #2. If I'm not clear about my methods I'm going to post some pictures on the web site: http://daniel.dempseyfamily.us Dan Dempsey -------- Scratch building XL with Corvair Engine Read this topic online here: http://forums.matronics.com/viewtopic.php?p=225925#225925 Attachments: http://forums.matronics.com//files/fuelsender_730.jpg http://forums.matronics.com//files/leakdetect_805.jpg


    Message 8


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    Time: 05:36:03 PM PST US
    From: <paulrod36@msn.com>
    Subject: Re: Leaky Prosealed Tank
    Dan, I went through much the same problem, with leaks that weren't "authorized". I cut about a 6-inch hole where the filler was, and went in by hand through that hole. Then I mounted the filler on a larger plate, pro-sealed between the tank and my "access plate", then drilled and rivetted (dip the rivets in proseal) to close the tanks. By the way, water is frowned upon in tanks. There's a risk of corrosion on the fuel sender. (don't ask how I know). I used a couple of gallons of diesel, and held the tank in different positions to check for leaks. Actually, proseal is tough enough that you might be able to slop it on externally, and stop a small leak. Paul Rodriguez ----- Original Message ----- From: Carlos Sa<mailto:carlossa52@gmail.com> To: zenith-list@matronics.com<mailto:zenith-list@matronics.com> Sent: Tuesday, January 20, 2009 7:07 PM Subject: Re: Zenith-List: Leaky Prosealed Tank Dan, most of what I learned about this type of sorcery was from RV builders (web sites and matronics archives). I remember reading about somebody using a syringe to inject proseal (?) and fix a leak. Good luck Carlos 2009/1/20 leinad <leinad@hughes.net<mailto:leinad@hughes.net>> <leinad@hughes.net<mailto:leinad@hughes.net>> All, I've assembled my fuel tanks with proseal and rivets. I put about 1/2 psi air in them and have a clear tygon tubing with red food dye attached to a door jamb as pressure indicator. I pump air into the tank with a bicycle pump. I raise the level of the fluid 13.8 inches to give my 1/2 psi and have a pointer to show where I stop adding air. My problem is that I've tested 2 of the 4 wing tanks and they both leaked! The first leaked down several inches in about 10 minutes and I was able to find the leak with sudsy water. The second took an hour to leak down an inch and I haven't been able to find the leak. I'm reluctant to put more pressure in the tanks. Has anyone gone through this, and what was the solution to both finding and fixing the leaks? I can't even get my hand through the filler, so applying more goo from inside seams impossible. Solutions I've considered have been to cut a large access hole in the back of the tank, patch my leaks from inside then ! patch the access hole. Another thought was form a U shaped bead of aluminum to wrap around the leaky joint, with plenty of proseal thus forming an fix from the outside. But I still need to find the slow leak on tank #2. If I'm not clear about my methods I'm going to post some pictures on the web site: http://daniel.dempseyfamily.us<http://daniel.dempseyfamily.us/> Dan Dempsey -------- Scratch building XL with Corvair Engine Read this topic online here: http://forums.matronics.com/viewtopic.php?p=225925#225925<http://forums .matronics.com/viewtopic.php?p=225925#225925> Attachments: http://forums.matronics.com//files/fuelsender_730.jpg<http://forums.matro nics.com//files/fuelsender_730.jpg> http://forums.matronics.com//files/leakdetect_805.jpg<http://forums.matro nics.com//files/leakdetect_805.jpg> http://www.matronics.com/Navigator?Zenith-List<http://www.matronics.com/N avigator?Zenith-List> http://www.matronics.com/contribution<http://www.matronics.com/contributi on>


    Message 9


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    Time: 05:40:36 PM PST US
    Subject: Re: Spinners
    From: jaybannist@cs.com
    Dan, No, I didn't weigh it. Van's installation sheet doesn't give weights, either.? I'd guess that the fiberglass cone is from around 1/16" to 3/32" thick. Van's drawing calls for a .063" (1/16") thick filler behind the prop blades. I actually used part of the cut-out for the prop for the fillers. The base of the cone is 13" in diameter and it is 13 1/2" from base to tip.? The bulkheads are .063" 2024-T0 aluminum.? We ('Vairheads) had to get together and come up with a hole pattern to fit the WW hub bolt pattern.? When installing it, I used a laser spot aimed at the tip of the cone to insure the tip wouldn't move. I had the spark plugs out and rotated the prop to make sure of the alignment. Jay in Dallas -----Original Message----- From: leinad <leinad@hughes.net> Sent: Tue, 20 Jan 2009 6:25 pm Subject: Zenith-List: Re: Spinners Jay, My spinner weighs about 2 lb 6 oz. This "seams" heavy to me. Did you by chance weigh yours before installing it? Dan jaybannist(at)cs.com wrote: > Dan, > > I used the spinner from Van's that WW recommends. It has a bulkhead behind the prop and one in front of the prop. It was fairly easy to install and runs true. I can't imagine how a spinner would work with only one bulkhead. > > Jay in Dallas > Do not archive > > > > > > -- -------- Scratch building XL with Corvair Engine Read this topic online here: http://forums.matronics.com/viewtopic.php?p=225922#225922 ________________________________________________________________________ Email message sent from CompuServe - visit us today at http://www.cs.com


    Message 10


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    Time: 05:51:41 PM PST US
    Subject: Re: Leaky Prosealed Tank
    From: "leinad" <leinad@hughes.net>
    Paul, Thanks for the guidance. Sounds like you did one of the ideas I've been contemplating. Now if I can find the leak in tank #2. Tony, Thanks, but it's not temperature. This can be proved by putting the air back in the tank. The indicator always goes down, never back up. I have more photos up now at: http://daniel.dempseyfamily.us/zodiac/fuel/index.html Dan [quote="paulrod36(at)msn.com"] Dan, I went through much the same problem, with leaks that weren't "authorized". I cut about a 6-inch hole where the filler was, and went in by hand through that hole. Then I mounted the filler on a larger plate, pro-sealed between the tank and my "access plate", then drilled and rivetted (dip the rivets in proseal) to close the tanks. By the way, water is frowned upon in tanks. There's a risk of corrosion on the fuel sender. (don't ask how I know). I used a couple of gallons of diesel, and held the tank in different positions to check for leaks. Actually, proseal is tough enough that you might be able to slop it on externally, and stop a small leak. Paul Rodriguez > --- -------- Scratch building XL with Corvair Engine Read this topic online here: http://forums.matronics.com/viewtopic.php?p=225932#225932


    Message 11


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    Time: 06:21:39 PM PST US
    Subject: Re: Spinners
    From: "leinad" <leinad@hughes.net>
    Jay, Thanks for the info. At this point knowing the weight might convince me to call the UHS a mistake and order the Van's spinner. I'm really not very happy with the finish. There are many imperfections in the surface. With 2 bulk heads I assume thickness of the prop is tightly controlled. My prop is 3 3/4" thick. I'm a little concerned about what you say about the bolt pattern. Isn't W. Wynne using SAE1? (6 bolts on 4.375) That's what was on the plans I purchased from him about 5 years ago. Think I'll go visit the Van's site now. Dan Dempsey jaybannist(at)cs.com wrote: > Dan, > > No, I didn't weigh it. Van's installation sheet doesn't give weights, either. I'd guess that the fiberglass cone is from around 1/16" to 3/32" thick. Van's drawing calls for a .063" (1/16") thick filler behind the prop blades. I actually used part of the cut-out for the prop for the fillers. The base of the cone is 13" in diameter and it is 13 1/2" from base to tip. The bulkheads are .063" 2024-T0 aluminum. We ('Vairheads) had to get together and come up with a hole pattern to fit the WW hub bolt pattern. When installing it, I used a laser spot aimed at the tip of the cone to insure the tip wouldn't move. I had the spark plugs out and rotated the prop to make sure of the alignment. > > Jay in Dallas > > > > > > -- -------- Scratch building XL with Corvair Engine Read this topic online here: http://forums.matronics.com/viewtopic.php?p=225933#225933


    Message 12


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    Time: 07:05:03 PM PST US
    Subject: Re: Spinners
    From: jaybannist@cs.com
    Dan, My spinner from Van's had a super finish, right out of the box. It required no finish work, other than making the cut outs for the prop and painting.? I don't know the SAE numbers, but WW's bolt pattern doesn't match Van's. I have a drawing of the bolt pattern we came up with.? Let me now if you want me to send it to you. Jay Bannister -----Original Message----- From: leinad <leinad@hughes.net> Sent: Tue, 20 Jan 2009 8:20 pm Subject: Zenith-List: Re: Spinners Jay, Thanks for the info. At this point knowing the weight might convince me to call the UHS a mistake and order the Van's spinner. I'm really not very happy with the finish. There are many imperfections in the surface. With 2 bulk heads I assume thickness of the prop is tightly controlled. My prop is 3 3/4" thick. I'm a little concerned about what you say about the bolt pattern. Isn't W. Wynne using SAE1? (6 bolts on 4.375) That's what was on the plans I purchased from him about 5 years ago. Think I'll go visit the Van's site now. Dan Dempsey jaybannist(at)cs.com wrote: > Dan, > > No, I didn't weigh it. Van's installation sheet doesn't give weights, either. I'd guess that the fiberglass cone is from around 1/16" to 3/32" thick. Van's drawing calls for a .063" (1/16") thick filler behind the prop blades. I actually used part of the cut-out for the prop for the fillers. The base of the cone is 13" in diameter and it is 13 1/2" from base to tip. The bulkheads are .063" 2024-T0 aluminum. We ('Vairheads) had to get together and come up with a hole pattern to fit the WW hub bolt pattern. When installing it, I used a laser spot aimed at the tip of the cone to insure the tip wouldn't move. I had the spark plugs out and rotated the prop to make sure of the alignment. > > Jay in Dallas > > > > > > -- -------- Scratch building XL with Corvair Engine Read this topic online here: http://forums.matronics.com/viewtopic.php?p=225933#225933 ________________________________________________________________________ Email message sent from CompuServe - visit us today at http://www.cs.com


    Message 13


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    Time: 07:22:37 PM PST US
    From: "Bill Naumuk" <naumuk@windstream.net>
    Subject: Ground block
    All- B+C recommends installing the panel ground block on the firewall, but I've got the header tank in the way. Is mounting the ground block near the panel, then running a braided ground cable to one of the motor mounts a workable alternative? Bill Naumuk Townville, Pa. HDS 601MG/Corvair 95%


    Message 14


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    Time: 07:56:16 PM PST US
    From: "Roger & Lina Hill" <hills@sunflower.com>
    Subject: Re: Spinners
    Great Plains VW has a selection of "you build it" spinners. Roger _____ From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of jaybannist@cs.com Sent: Tuesday, January 20, 2009 9:04 PM Subject: Re: Zenith-List: Re: Spinners Dan, My spinner from Van's had a super finish, right out of the box. It required no finish work, other than making the cut outs for the prop and painting. I don't know the SAE numbers, but WW's bolt pattern doesn't match Van's. I have a drawing of the bolt pattern we came up with. Let me now if you want me to send it to you. Jay Bannister -----Original Message----- From: leinad <leinad@hughes.net> Sent: Tue, 20 Jan 2009 8:20 pm Subject: Zenith-List: Re: Spinners Jay, Thanks for the info. At this point knowing the weight might convince me to call the UHS a mistake and order the Van's spinner. I'm really not very happy with the finish. There are many imperfections in the surface. With 2 bulk heads I assume thickness of the prop is tightly controlled. My prop is 3 3/4" thick. I'm a little concerned about what you say about the bolt pattern. Isn't W. Wynne using SAE1? (6 bolts on 4.375) That's what was on the plans I purchased from him about 5 years ago. Think I'll go visit the Van's site now. Dan Dempsey jaybannist(at)cs.com wrote: > Dan, > > No, I didn't weigh it. Van's installation sheet doesn't give weights, either. I'd guess that the fiberglass cone is from around 1/16" to 3/32" thick. Van's drawing calls for a .063" (1/16") thick filler behind the prop blades. I actually used part of the cut-out for the prop for the fillers. The base of the cone is 13" in diameter and it is 13 1/2" from base to tip. The bulkheads are .063" 2024-T0 aluminum. We ('Vairheads) had to get together and come up with a hole pattern to fit the WW hub bolt pattern. When installing it, I used a laser spot aimed at the tip of the cone to insure the tip wouldn't move. I had the spark plugs out and rotated the prop to make sure of the alignment. > > Jay in Dallas > > > > > > -- -------- Scratch building XL with Corvair Engine Read this topic online here: http://forums.matronics.com/viewtopic.php?p=225933#225933 _____ size=2 width="100%" align=center> Email message sent from CompuServe - visit us today at http://www.cs.com


    Message 15


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    Time: 11:24:23 PM PST US
    From: Trainnut01@aol.com
    Subject: Re: Leaky Prosealed Tank
    Dan When I built my RV I had to cut a hole in the back of one of the tanks to seal a leaky joint. I was really easy to do. (After I got the tank out.) Carroll XLVair **************Inauguration '09: Get complete coverage from the nation's




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