---------------------------------------------------------- Zenith-List Digest Archive --- Total Messages Posted Tue 04/01/03: 9 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:35 AM - Re: Header Tank - Thanks! (HINDE,FRANK (HP-Corvallis,ex1)) 2. 08:07 AM - Re: Header Tank - Thanks! (Gary Gower) 3. 09:40 AM - Re: Header Tank - Thanks! (Don Honabach) 4. 09:50 AM - Matronics ISP Upgrade TODAY... (Matt Dralle) 5. 11:50 AM - Re: Header Tank - Thanks! (HINDE,FRANK (HP-Corvallis,ex1)) 6. 02:56 PM - Re: Header Tank - Thanks! (Don Honabach) 7. 03:12 PM - Re: batterys - what me worry? (Pinneo, George) 8. 03:57 PM - Tall Torso - Short Cockpit... (Martin & Eva Bima) 9. 04:00 PM - Re: Header Tank - Thanks! (caspainhower@aep.com) ________________________________ Message 1 _____________________________________ Time: 07:35:42 AM PST US From: "HINDE,FRANK (HP-Corvallis,ex1)" Subject: RE: Zenith-List: Header Tank - Thanks! --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" Interesting to note the other response about the prop stopping... I have actutually truned the ignition off and the prop kept on turning. I guess it could stop but I would not expect it to unless you were in a nose high slow airspeed attitude. Frank 2 batts -----Original Message----- From: caspainhower@aep.com [mailto:caspainhower@aep.com] Subject: RE: Zenith-List: Header Tank - Thanks! --> Zenith-List message posted by: caspainhower@aep.com Don, I've never experienced an in-flight engine failure, but airspeed should keep the prop windmilling enough to restart once the fuel/ignition is restored. Craig "Don Honabach" To: Sent by: cc: owner-zenith-list-server@ma Subject: RE: Zenith-List: Header Tank - Thanks! tronics.com 03/31/03 06:55 PM Please respond to zenith-list --> Zenith-List message posted by: "Don Honabach" Just wanted to thank everyone for all the great replies (both public and private) about the header tank vs. just wing tanks, and the access hole for the instrument panel. Lots of great ideas! As for a two battery setup, is it possible to restart the engine in response to a total primary electrical circuit failure? Since the secondary/backup electrical circuit with the 3AMP battery isn't capable of running the starter, I just wonder what would happen during this critical phase. Thanks again!!! Don Honabach Tempe, AZ - 601HDS -----Original Message----- From: HINDE,FRANK (HP-Corvallis,ex1) [mailto:frank.hinde@hp.com] Subject: RE: Zenith-List: Header Tank - Thanks! --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" --> As one of the great proponents of the wing tank only option (been flying it for 300 hours almost) I would suggest a look in the archives. Briefly, in aircraft you essentially want to avoid single points of failure (impossible to do in reality but there are a few things you can do). Run two batteries...a 18AH for your main system and a 3AH that just runs the second igntion and 2nd fuel pump. Nothing else. Do not interconnect these systems via a single changeover type switch (if the switch melts your hosed!) Charge your 2nd batt from the alternator via a diode this has two effects.. 1) it prevents backflowing current to the alternator or first battery in the event of a major short/fire. 2) drops the charging voltage by 0.8 volts (you may want two diodes I series) to get a lower charging voltage for batt #2. All of the above adds a couple of pounds but it significantly reduces your risk of an engine stoppage. Frank -----Original Message----- From: Bryan Martin [mailto:bryanmmartin@comcast.net] Subject: Re: Zenith-List: Header Tank - Thanks! --> Zenith-List message posted by: Bryan Martin --> on 3/27/03 5:00 PM, STEFREE@aol.com at STEFREE@aol.com wrote: > In the wing tank only version, if your pumps fail, you are going > down......Same for an electrical failure...something to think > about..... > > Talk to you later, > > SF With the Subaru, the ignition is also run by the electrical system. If your engine is going to quit anyway, it's probably best if your fuel pumps stop also. ;) -- Bryan Martin N61BM, CH 601 XL, Stratus Subaru. Airframe construction complete. Working on instrument panel, electrical and interior. do not archive. advertising on the Matronics Forums. Share: Share photos & files with other List members. direct advertising on the Matronics Forums. This e-mail message and all attachments transmitted with it from the Nuclear Generation Group of American Electric Power are for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. advertising on the Matronics Forums. Share: Share photos & files with other List members. ________________________________ Message 2 _____________________________________ Time: 08:07:45 AM PST US From: Gary Gower Subject: RE: Zenith-List: Header Tank - Thanks! --> Zenith-List message posted by: Gary Gower Nothing, the engine will not stop in the first place because of a failure of the alternator or short in the main electric system. One batery is running the primary ignition and main gas pump. The second batery is running the secondary ignition and the backup gas pump. So there will always be at least one working system at a time. Your preflight should check that BOTH systema are always working perfect after each flight. Just my point of view. Saludos Gary Gower 701 912 S --- Don Honabach wrote: > --> Zenith-List message posted by: "Don Honabach" > > Just wanted to thank everyone for all the great replies (both public > and > private) about the header tank vs. just wing tanks, and the access > hole > for the instrument panel. Lots of great ideas! > > As for a two battery setup, is it possible to restart the engine in > response to a total primary electrical circuit failure? Since the > secondary/backup electrical circuit with the 3AMP battery isn't > capable > of running the starter, I just wonder what would happen during this > critical phase. > > Thanks again!!! > Don Honabach > Tempe, AZ - 601HDS > > > -----Original Message----- > From: HINDE,FRANK (HP-Corvallis,ex1) [mailto:frank.hinde@hp.com] > To: 'zenith-list@matronics.com' > Subject: RE: Zenith-List: Header Tank - Thanks! > > > --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" > --> > > As one of the great proponents of the wing tank only option (been > flying > it for 300 hours almost) I would suggest a look in the archives. > > Briefly, in aircraft you essentially want to avoid single points of > failure (impossible to do in reality but there are a few things you > can > do). > > Run two batteries...a 18AH for your main system and a 3AH that just > runs > the second igntion and 2nd fuel pump. Nothing else. > > Do not interconnect these systems via a single changeover type switch > (if the switch melts your hosed!) > > Charge your 2nd batt from the alternator via a diode this has two > effects.. > > 1) it prevents backflowing current to the alternator or first battery > in > the event of a major short/fire. > 2) drops the charging voltage by 0.8 volts (you may want two diodes I > series) to get a lower charging voltage for batt #2. > > All of the above adds a couple of pounds but it significantly reduces > your risk of an engine stoppage. > > Frank > > -----Original Message----- > From: Bryan Martin [mailto:bryanmmartin@comcast.net] > To: Zenith List > Subject: Re: Zenith-List: Header Tank - Thanks! > > > --> Zenith-List message posted by: Bryan Martin > --> > > on 3/27/03 5:00 PM, STEFREE@aol.com at STEFREE@aol.com wrote: > > > In the wing tank only version, if your pumps fail, you are going > > down......Same for an electrical failure...something to think > > about..... > > > > Talk to you later, > > > > SF > > With the Subaru, the ignition is also run by the electrical system. > If > your engine is going to quit anyway, it's probably best if your fuel > pumps stop also. ;) > > > -- > Bryan Martin > N61BM, CH 601 XL, Stratus Subaru. > Airframe construction complete. > Working on instrument panel, electrical and interior. > do not archive. > > > advertising on the Matronics Forums. > Share: Share photos & files with other List members. > > > direct advertising on the Matronics Forums. > > > > > > > > http://platinum.yahoo.com ________________________________ Message 3 _____________________________________ Time: 09:40:47 AM PST US Subject: RE: Zenith-List: Header Tank - Thanks! From: "Don Honabach" --> Zenith-List message posted by: "Don Honabach" >>> engine will not stop in the first place because of a failure of the alternator or short in the main electric system My concern was dealing with a total failure of the primary electric circuit (not just a short or alternator failure). I'm sure there are many cases that could cause a total circuit failure, but the most obvious would be a common ground cable or similar that disconnects. >>> One batery is running the primary ignition and main gas pump. The second batery is running the secondary ignition and the backup gas pump. Since it was recommended to me from Stratus (for the Subaru EA81 engines) not to run both ignitions at the same time, it would most like cause problems to have the backup circuit hot until needed. So this leaves me wondering if the primary electrical system has the starter and the engine dies during a total electrical failure of the primary circuit that this would end up leaving a situation where you have backup power and no way to start the engine. Thanks! Don -----Original Message----- From: Gary Gower [mailto:ggower_99@yahoo.com] Subject: RE: Zenith-List: Header Tank - Thanks! --> Zenith-List message posted by: Gary Gower Nothing, the engine will not stop in the first place because of a failure of the alternator or short in the main electric system. One batery is running the primary ignition and main gas pump. The second batery is running the secondary ignition and the backup gas pump. So there will always be at least one working system at a time. Your preflight should check that BOTH systema are always working perfect after each flight. Just my point of view. Saludos Gary Gower 701 912 S --- Don Honabach wrote: > --> Zenith-List message posted by: "Don Honabach" > > Just wanted to thank everyone for all the great replies (both public > and > private) about the header tank vs. just wing tanks, and the access > hole for the instrument panel. Lots of great ideas! > > As for a two battery setup, is it possible to restart the engine in > response to a total primary electrical circuit failure? Since the > secondary/backup electrical circuit with the 3AMP battery isn't > capable of running the starter, I just wonder what would happen during > this critical phase. > > Thanks again!!! > Don Honabach > Tempe, AZ - 601HDS > > > -----Original Message----- > From: HINDE,FRANK (HP-Corvallis,ex1) [mailto:frank.hinde@hp.com] > To: 'zenith-list@matronics.com' > Subject: RE: Zenith-List: Header Tank - Thanks! > > > --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" > --> > > As one of the great proponents of the wing tank only option (been > flying it for 300 hours almost) I would suggest a look in the > archives. > > Briefly, in aircraft you essentially want to avoid single points of > failure (impossible to do in reality but there are a few things you > can do). > > Run two batteries...a 18AH for your main system and a 3AH that just > runs the second igntion and 2nd fuel pump. Nothing else. > > Do not interconnect these systems via a single changeover type switch > (if the switch melts your hosed!) > > Charge your 2nd batt from the alternator via a diode this has two > effects.. > > 1) it prevents backflowing current to the alternator or first battery > in the event of a major short/fire. > 2) drops the charging voltage by 0.8 volts (you may want two diodes I > series) to get a lower charging voltage for batt #2. > > All of the above adds a couple of pounds but it significantly reduces > your risk of an engine stoppage. > > Frank > > -----Original Message----- > From: Bryan Martin [mailto:bryanmmartin@comcast.net] > To: Zenith List > Subject: Re: Zenith-List: Header Tank - Thanks! > > > --> Zenith-List message posted by: Bryan Martin > --> > > on 3/27/03 5:00 PM, STEFREE@aol.com at STEFREE@aol.com wrote: > > > In the wing tank only version, if your pumps fail, you are going > > down......Same for an electrical failure...something to think > > about..... > > > > Talk to you later, > > > > SF > > With the Subaru, the ignition is also run by the electrical system. If > your engine is going to quit anyway, it's probably best if your fuel > pumps stop also. ;) > > > -- > Bryan Martin > N61BM, CH 601 XL, Stratus Subaru. > Airframe construction complete. > Working on instrument panel, electrical and interior. > do not archive. > > > advertising on the Matronics Forums. > Share: Share photos & files with other List members. > > > direct advertising on the Matronics Forums. > > > > > > > > http://platinum.yahoo.com direct advertising on the Matronics Forums. ________________________________ Message 4 _____________________________________ Time: 09:50:37 AM PST US From: Matt Dralle Subject: Zenith-List: Matronics ISP Upgrade TODAY... --> Zenith-List message posted by: Matt Dralle Dear Listers, The time has finally arrived for the Internet Service Provider (ISP) upgrade! You'll recall that I was looking into upgrading the existing SDSL connection from 768k to 1.1M. As it turned out, the copper line wouldn't support any speeds greater than the current 768k. In light of that news, I just bit-the-bullet and ordered a full, commercial-grade T1 connection. The T1 connection will provide a full-duplex, high priority, 1.5Mb Internet connection which should be a substantial performance enhancement for all of the List services! Pacbell delivered the T1 Loop last week and it tested out fine. This past weekend I pulled the tail circuit from the demark to the office. This afternoon, Tuesday 4/1/03, the ISP is suppose come and install the new router and bring up routing on a test subnet. Assuming that everything checks out okay with the T1, new router, and routing, I will have them swing the main Matronics subnet off the SDSL and onto the T1. In theory, the swing could be nearly transparent to users, but that's usually not the case... ;-) Please expect a bit of instability in connectivity this afternoon as we work though the transition issues. I will post a follow up message when everything is up and running on the new T1 line. Finally, please know that it is solely your Contributions that make these kinds of List upgrades happen! There is no advertising budget (aka, flashing banner ads and annoying pop up browser windows) to pay these bills; operational support is solely from List members like you during the yearly List Fund Raiser. If you would like to make your Contribution to support the Lists and upgrades like this T1 connectivity enhancement, please see the List Contribution Web Site where you can make your Contribution with a Credit Card, PayPal, or Personal Check. You can even get a free List Archive CDROM with a qualifying List Contribution! The URL is: http://www.matronics.com/contribution Thanks again to EVERYONE that made a generous Contribution last year and enabled this awesome upgrade to T1 service! Matt Dralle Matronics Email List Admin. Matt G Dralle | Matronics | PO Box 347 | Livermore | CA | 94551 925-606-1001 V | 925-606-6281 F | dralle@matronics.com Email http://www.matronics.com/ WWW | Featuring Products For Aircraft ________________________________ Message 5 _____________________________________ Time: 11:50:39 AM PST US From: "HINDE,FRANK (HP-Corvallis,ex1)" Subject: RE: Zenith-List: Header Tank - Thanks! --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" Yes this was our point about the engine continuing to turn due to windmilling of the prop. The idea being it all goes quiet and then you flip on the 2ndary ignition... One paost said his engine stopped whn he has an ignition system failure...I have not seen this, when I switched the igntion off the engine continued to windmill. Frank -----Original Message----- From: Don Honabach [mailto:don@pcperfect.com] Subject: RE: Zenith-List: Header Tank - Thanks! --> Zenith-List message posted by: "Don Honabach" >>> engine will not stop in the first place because of a failure of the alternator or short in the main electric system My concern was dealing with a total failure of the primary electric circuit (not just a short or alternator failure). I'm sure there are many cases that could cause a total circuit failure, but the most obvious would be a common ground cable or similar that disconnects. >>> One batery is running the primary ignition and main gas pump. The second batery is running the secondary ignition and the backup gas pump. Since it was recommended to me from Stratus (for the Subaru EA81 engines) not to run both ignitions at the same time, it would most like cause problems to have the backup circuit hot until needed. So this leaves me wondering if the primary electrical system has the starter and the engine dies during a total electrical failure of the primary circuit that this would end up leaving a situation where you have backup power and no way to start the engine. Thanks! Don -----Original Message----- From: Gary Gower [mailto:ggower_99@yahoo.com] Subject: RE: Zenith-List: Header Tank - Thanks! --> Zenith-List message posted by: Gary Gower Nothing, the engine will not stop in the first place because of a failure of the alternator or short in the main electric system. One batery is running the primary ignition and main gas pump. The second batery is running the secondary ignition and the backup gas pump. So there will always be at least one working system at a time. Your preflight should check that BOTH systema are always working perfect after each flight. Just my point of view. Saludos Gary Gower 701 912 S --- Don Honabach wrote: > --> Zenith-List message posted by: "Don Honabach" > > Just wanted to thank everyone for all the great replies (both public > and > private) about the header tank vs. just wing tanks, and the access > hole for the instrument panel. Lots of great ideas! > > As for a two battery setup, is it possible to restart the engine in > response to a total primary electrical circuit failure? Since the > secondary/backup electrical circuit with the 3AMP battery isn't > capable of running the starter, I just wonder what would happen during > this critical phase. > > Thanks again!!! > Don Honabach > Tempe, AZ - 601HDS > > > -----Original Message----- > From: HINDE,FRANK (HP-Corvallis,ex1) [mailto:frank.hinde@hp.com] > To: 'zenith-list@matronics.com' > Subject: RE: Zenith-List: Header Tank - Thanks! > > > --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" > --> > > As one of the great proponents of the wing tank only option (been > flying it for 300 hours almost) I would suggest a look in the > archives. > > Briefly, in aircraft you essentially want to avoid single points of > failure (impossible to do in reality but there are a few things you > can do). > > Run two batteries...a 18AH for your main system and a 3AH that just > runs the second igntion and 2nd fuel pump. Nothing else. > > Do not interconnect these systems via a single changeover type switch > (if the switch melts your hosed!) > > Charge your 2nd batt from the alternator via a diode this has two > effects.. > > 1) it prevents backflowing current to the alternator or first battery > in the event of a major short/fire. > 2) drops the charging voltage by 0.8 volts (you may want two diodes I > series) to get a lower charging voltage for batt #2. > > All of the above adds a couple of pounds but it significantly reduces > your risk of an engine stoppage. > > Frank > > -----Original Message----- > From: Bryan Martin [mailto:bryanmmartin@comcast.net] > To: Zenith List > Subject: Re: Zenith-List: Header Tank - Thanks! > > > --> Zenith-List message posted by: Bryan Martin > --> > > on 3/27/03 5:00 PM, STEFREE@aol.com at STEFREE@aol.com wrote: > > > In the wing tank only version, if your pumps fail, you are going > > down......Same for an electrical failure...something to think > > about..... > > > > Talk to you later, > > > > SF > > With the Subaru, the ignition is also run by the electrical system. If > your engine is going to quit anyway, it's probably best if your fuel > pumps stop also. ;) > > > -- > Bryan Martin > N61BM, CH 601 XL, Stratus Subaru. > Airframe construction complete. > Working on instrument panel, electrical and interior. > do not archive. > > > advertising on the Matronics Forums. > Share: Share photos & files with other List members. > > > direct advertising on the Matronics Forums. > > > > > > > > http://platinum.yahoo.com direct advertising on the Matronics Forums. advertising on the Matronics Forums. Share: Share photos & files with other List members. ________________________________ Message 6 _____________________________________ Time: 02:56:49 PM PST US Subject: RE: Zenith-List: Header Tank - Thanks! From: "Don Honabach" --> Zenith-List message posted by: "Don Honabach" >> Yes this was our point about the engine continuing to turn due to windmilling of the prop. The idea being it all goes quiet and then you flip on the 2ndary ignition... Thanks - makes sense. Sounds like it would also be good to do a test during the first 40 hours over a smaller airport while both electrical systems are operational to see how everything works. Don -----Original Message----- From: HINDE,FRANK (HP-Corvallis,ex1) [mailto:frank.hinde@hp.com] Subject: RE: Zenith-List: Header Tank - Thanks! --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" --> Yes this was our point about the engine continuing to turn due to windmilling of the prop. The idea being it all goes quiet and then you flip on the 2ndary ignition... One paost said his engine stopped whn he has an ignition system failure...I have not seen this, when I switched the igntion off the engine continued to windmill. Frank -----Original Message----- From: Don Honabach [mailto:don@pcperfect.com] Subject: RE: Zenith-List: Header Tank - Thanks! --> Zenith-List message posted by: "Don Honabach" >>> engine will not stop in the first place because of a failure of the alternator or short in the main electric system My concern was dealing with a total failure of the primary electric circuit (not just a short or alternator failure). I'm sure there are many cases that could cause a total circuit failure, but the most obvious would be a common ground cable or similar that disconnects. >>> One batery is running the primary ignition and main gas pump. The second batery is running the secondary ignition and the backup gas pump. Since it was recommended to me from Stratus (for the Subaru EA81 engines) not to run both ignitions at the same time, it would most like cause problems to have the backup circuit hot until needed. So this leaves me wondering if the primary electrical system has the starter and the engine dies during a total electrical failure of the primary circuit that this would end up leaving a situation where you have backup power and no way to start the engine. Thanks! Don -----Original Message----- From: Gary Gower [mailto:ggower_99@yahoo.com] Subject: RE: Zenith-List: Header Tank - Thanks! --> Zenith-List message posted by: Gary Gower Nothing, the engine will not stop in the first place because of a failure of the alternator or short in the main electric system. One batery is running the primary ignition and main gas pump. The second batery is running the secondary ignition and the backup gas pump. So there will always be at least one working system at a time. Your preflight should check that BOTH systema are always working perfect after each flight. Just my point of view. Saludos Gary Gower 701 912 S --- Don Honabach wrote: > --> Zenith-List message posted by: "Don Honabach" > > Just wanted to thank everyone for all the great replies (both public > and > private) about the header tank vs. just wing tanks, and the access > hole for the instrument panel. Lots of great ideas! > > As for a two battery setup, is it possible to restart the engine in > response to a total primary electrical circuit failure? Since the > secondary/backup electrical circuit with the 3AMP battery isn't > capable of running the starter, I just wonder what would happen during > this critical phase. > > Thanks again!!! > Don Honabach > Tempe, AZ - 601HDS > > > -----Original Message----- > From: HINDE,FRANK (HP-Corvallis,ex1) [mailto:frank.hinde@hp.com] > To: 'zenith-list@matronics.com' > Subject: RE: Zenith-List: Header Tank - Thanks! > > > --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" > --> > > As one of the great proponents of the wing tank only option (been > flying it for 300 hours almost) I would suggest a look in the > archives. > > Briefly, in aircraft you essentially want to avoid single points of > failure (impossible to do in reality but there are a few things you > can do). > > Run two batteries...a 18AH for your main system and a 3AH that just > runs the second igntion and 2nd fuel pump. Nothing else. > > Do not interconnect these systems via a single changeover type switch > (if the switch melts your hosed!) > > Charge your 2nd batt from the alternator via a diode this has two > effects.. > > 1) it prevents backflowing current to the alternator or first battery > in the event of a major short/fire. > 2) drops the charging voltage by 0.8 volts (you may want two diodes I > series) to get a lower charging voltage for batt #2. > > All of the above adds a couple of pounds but it significantly reduces > your risk of an engine stoppage. > > Frank > > -----Original Message----- > From: Bryan Martin [mailto:bryanmmartin@comcast.net] > To: Zenith List > Subject: Re: Zenith-List: Header Tank - Thanks! > > > --> Zenith-List message posted by: Bryan Martin > --> > > on 3/27/03 5:00 PM, STEFREE@aol.com at STEFREE@aol.com wrote: > > > In the wing tank only version, if your pumps fail, you are going > > down......Same for an electrical failure...something to think > > about..... > > > > Talk to you later, > > > > SF > > With the Subaru, the ignition is also run by the electrical system. If > your engine is going to quit anyway, it's probably best if your fuel > pumps stop also. ;) > > > -- > Bryan Martin > N61BM, CH 601 XL, Stratus Subaru. > Airframe construction complete. > Working on instrument panel, electrical and interior. > do not archive. > > > advertising on the Matronics Forums. > Share: Share photos & files with other List members. > > > direct advertising on the Matronics Forums. > > > > > > > > http://platinum.yahoo.com direct advertising on the Matronics Forums. advertising on the Matronics Forums. Share: Share photos & files with other List members. direct advertising on the Matronics Forums. ________________________________ Message 7 _____________________________________ Time: 03:12:33 PM PST US Subject: Zenith-List: RE: batterys - what me worry? From: "Pinneo, George" --> Zenith-List message posted by: "Pinneo, George" I had my single battery go so low I lost all electrical power while in flight; the old Rotax alternator was too weak to charge it. The engine continued to operate nominally: no issues. I even used my handheld ICOM to talk to the pattern for a landing. Loss of all battery power on a single battery Rotax will not bring you down out of the sky. Fly the plane, fly the plane, land the plane! GGP ________________________________ Message 8 _____________________________________ Time: 03:57:12 PM PST US From: "Martin & Eva Bima" Subject: Zenith-List: Tall Torso - Short Cockpit... --> Zenith-List message posted by: "Martin & Eva Bima" Has anyone tried to lower the seats, bubble the top canopy (and bend the crossbar)? I am 6'4". I seem to have plenty of leg room but just an inch-and-a-hair short on the ceiling. IDEAS? Thanks ________________________________ Message 9 _____________________________________ Time: 04:00:20 PM PST US Subject: RE: Zenith-List: Header Tank - Thanks! From: caspainhower@aep.com 04/01/2003 06:57:46 PM --> Zenith-List message posted by: caspainhower@aep.com Sounds like something for the test flight. Just be sure to cut the engine by pulling the fuel shutoff so the plugs don't get fouled or the mufflers blown off! "HINDE,FRANK (HP-Corvallis,ex1)" To: "'zenith-list@matronics.com'" cc: Sent by: Subject: RE: Zenith-List: Header Tank - Thanks! owner-zenith-list-server@ma tronics.com 04/01/03 10:32 AM Please respond to zenith-list --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" Interesting to note the other response about the prop stopping... I have actutually truned the ignition off and the prop kept on turning. I guess it could stop but I would not expect it to unless you were in a nose high slow airspeed attitude. Frank 2 batts -----Original Message----- From: caspainhower@aep.com [mailto:caspainhower@aep.com] Subject: RE: Zenith-List: Header Tank - Thanks! --> Zenith-List message posted by: caspainhower@aep.com Don, I've never experienced an in-flight engine failure, but airspeed should keep the prop windmilling enough to restart once the fuel/ignition is restored. Craig "Don Honabach" To: Sent by: cc: owner-zenith-list-server@ma Subject: RE: Zenith-List: Header Tank - Thanks! tronics.com 03/31/03 06:55 PM Please respond to zenith-list --> Zenith-List message posted by: "Don Honabach" Just wanted to thank everyone for all the great replies (both public and private) about the header tank vs. just wing tanks, and the access hole for the instrument panel. Lots of great ideas! As for a two battery setup, is it possible to restart the engine in response to a total primary electrical circuit failure? Since the secondary/backup electrical circuit with the 3AMP battery isn't capable of running the starter, I just wonder what would happen during this critical phase. Thanks again!!! Don Honabach Tempe, AZ - 601HDS -----Original Message----- From: HINDE,FRANK (HP-Corvallis,ex1) [mailto:frank.hinde@hp.com] Subject: RE: Zenith-List: Header Tank - Thanks! --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" --> As one of the great proponents of the wing tank only option (been flying it for 300 hours almost) I would suggest a look in the archives. Briefly, in aircraft you essentially want to avoid single points of failure (impossible to do in reality but there are a few things you can do). Run two batteries...a 18AH for your main system and a 3AH that just runs the second igntion and 2nd fuel pump. Nothing else. Do not interconnect these systems via a single changeover type switch (if the switch melts your hosed!) Charge your 2nd batt from the alternator via a diode this has two effects.. 1) it prevents backflowing current to the alternator or first battery in the event of a major short/fire. 2) drops the charging voltage by 0.8 volts (you may want two diodes I series) to get a lower charging voltage for batt #2. All of the above adds a couple of pounds but it significantly reduces your risk of an engine stoppage. Frank -----Original Message----- From: Bryan Martin [mailto:bryanmmartin@comcast.net] Subject: Re: Zenith-List: Header Tank - Thanks! --> Zenith-List message posted by: Bryan Martin --> on 3/27/03 5:00 PM, STEFREE@aol.com at STEFREE@aol.com wrote: > In the wing tank only version, if your pumps fail, you are going > down......Same for an electrical failure...something to think > about..... > > Talk to you later, > > SF With the Subaru, the ignition is also run by the electrical system. If your engine is going to quit anyway, it's probably best if your fuel pumps stop also. ;) -- Bryan Martin N61BM, CH 601 XL, Stratus Subaru. Airframe construction complete. Working on instrument panel, electrical and interior. do not archive. advertising on the Matronics Forums. Share: Share photos & files with other List members. direct advertising on the Matronics Forums. This e-mail message and all attachments transmitted with it from the Nuclear Generation Group of American Electric Power are for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. advertising on the Matronics Forums. Share: Share photos & files with other List members. 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