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
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| Subject: | Header Tank - Thanks! |
--> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
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"
<don@pcperfect.com> To:
<zenith-list@matronics.com>
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" <don@pcperfect.com>
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)"
--> <frank.hinde@hp.com>
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
--> <bryanmmartin@comcast.net>
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.
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Message 2
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| Subject: | Header Tank - Thanks! |
--> Zenith-List message posted by: Gary Gower <ggower_99@yahoo.com>
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 <don@pcperfect.com> wrote:
> --> Zenith-List message posted by: "Don Honabach" <don@pcperfect.com>
>
> 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)"
> --> <frank.hinde@hp.com>
>
> 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
> --> <bryanmmartin@comcast.net>
>
> 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
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| Subject: | Header Tank - Thanks! |
--> Zenith-List message posted by: "Don Honabach" <don@pcperfect.com>
>>> 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 <ggower_99@yahoo.com>
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 <don@pcperfect.com> wrote:
> --> Zenith-List message posted by: "Don Honabach" <don@pcperfect.com>
>
> 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)"
> --> <frank.hinde@hp.com>
>
> 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
> --> <bryanmmartin@comcast.net>
>
> 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
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| Subject: | Matronics ISP Upgrade TODAY... |
--> Zenith-List message posted by: Matt Dralle <dralle@matronics.com>
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
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| Subject: | Header Tank - Thanks! |
--> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
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" <don@pcperfect.com>
>>> 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 <ggower_99@yahoo.com>
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 <don@pcperfect.com> wrote:
> --> Zenith-List message posted by: "Don Honabach" <don@pcperfect.com>
>
> 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)"
> --> <frank.hinde@hp.com>
>
> 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
> --> <bryanmmartin@comcast.net>
>
> 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
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| Subject: | Header Tank - Thanks! |
--> Zenith-List message posted by: "Don Honabach" <don@pcperfect.com>
>> 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)"
--> <frank.hinde@hp.com>
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" <don@pcperfect.com>
>>> 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 <ggower_99@yahoo.com>
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 <don@pcperfect.com> wrote:
> --> Zenith-List message posted by: "Don Honabach" <don@pcperfect.com>
>
> 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)"
> --> <frank.hinde@hp.com>
>
> 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
> --> <bryanmmartin@comcast.net>
>
> 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
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Message 7
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|
| Subject: | RE: batterys - what me worry? |
--> Zenith-List message posted by: "Pinneo, George" <George.Pinneo@trw.com>
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
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| Subject: | Tall Torso - Short Cockpit... |
--> Zenith-List message posted by: "Martin & Eva Bima" <bima@autobahn.mb.ca>
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
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| Subject: | Header Tank - Thanks! |
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'"
<zenith-list@matronics.com>
<frank.hinde@hp.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)"
<frank.hinde@hp.com>
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"
<don@pcperfect.com> To:
<zenith-list@matronics.com>
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" <don@pcperfect.com>
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)"
--> <frank.hinde@hp.com>
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
--> <bryanmmartin@comcast.net>
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.
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Share: Share photos & files with other List members.
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