Today's Message Index:
----------------------
1. 02:55 AM - Re: Electric Flaps (Rick)
2. 04:16 AM - Re: OT: Financing for Flight Training (Crvsecretary@aol.com)
3. 04:36 AM - Re: Re: microswitch, update (Crvsecretary@aol.com)
4. 06:41 AM - Re: OT: Financing for Flight Training (Stephen R. Look)
5. 07:08 AM - bad parts I got from> "professionals" (Grant Corriveau)
6. 07:21 AM - Tail kit size & weight? (Joe Kerr)
7. 07:27 AM - Re: Tail kit size & weight? (Crvsecretary@aol.com)
8. 08:25 AM - Re: bad parts I got from> "professionals" (Cdngoose)
9. 09:36 AM - Re: Tail kit size & weight? (Al Young)
10. 09:37 AM - Re: Tail kit size & weight? (Al Young)
11. 10:49 AM - Microswitch (Sigmo@aol.com)
12. 11:09 AM - Got my engine! (kevinbonds)
13. 11:34 AM - off topic: racism (kevinbonds)
14. 12:12 PM - Re: about Sale (Tommy Walker)
15. 01:22 PM - Re: OT: Financing for Flight Training (todd@toddtown.com)
16. 01:27 PM - Re: about Sale (Larry McFarland)
17. 02:33 PM - Unfortunate comments. (Gsrth@aol.com)
18. 03:02 PM - Comments (Gsrth@aol.com)
19. 03:31 PM - Corvair Engine (Clyde Barcus)
20. 03:38 PM - First engine run (Trevor Page)
21. 04:07 PM - Re: First engine run (Johann G.)
22. 05:00 PM - Re: Tail kit size & weight? (NYTerminat@aol.com)
23. 05:21 PM - Re: Weight & Balance w/repect to Battery Placement ()
24. 05:42 PM - Re: Re: Weight & Balance w/repect to Battery Placement (Craig Payne)
25. 06:31 PM - Re: Re: Weight & Balance w/repect to Battery Placement (Randy Stout)
26. 08:10 PM - Re: Weight & Balance w/repect to Battery Placement ()
27. 10:45 PM - Re: First engine run (oil pressure sender failure?) (Gary Gower)
Message 1
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| Subject: | Re: Electric Flaps |
--> Zenith-List message posted by: Rick <n701rr@yahoo.com>
Thanks Larry, you took a load off my mind.
DO NOT ARCHIVE
Larry Martin <lrm@isp.com> wrote:
--> Zenith-List message posted by: "Larry Martin"
Had a little trouble getting good pictures inside the fuselage, but I put the best one on my site at www.angelfire.com/un/ch701/electricflaps.html.
Larry N1345L
My Site www.angelfire.com/un/ch701
Internal Virus Database is out-of-date.
Checked by AVG Anti-Virus.
Rick
Orlando, FL
http://www.geocities.com/n701rr/index.html
---------------------------------
Message 2
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| Subject: | Re: OT: Financing for Flight Training |
--> Zenith-List message posted by: Crvsecretary@aol.com
Hello Todd:
This isn't quite the answer you're looking for, but let me suggest it anyway:
I was laid off recently, but luckily, I was able to make some good decisions
so this is not a time of true crisis. So, while looking for a new job, I
decided to do something good for ME - now that I have the time. I started
Instrument instruction with the same thoughts of a long-term goal as you have.
I took out a loan from my life insurance policy that will pay for all the
Instrument work and possibly the Commercial also. When I pay it back, I pay
MYSELF back. The interest rate is very low. I have no dependents that NEED
the $$$ in case of the unexpected, and there is enough for final expenses etc.
I cannot say this will work for you, but it works for me.
Thanks for all your contributions; I have learned much through this list and
your posts.
Regards,
Tracy Smith
Naugatuck, CT
601xl tail 85%
do not archive
In a message dated 3/5/2005 2:35:37 AM Eastern Standard Time,
todd@toddtown.com writes:
--> Zenith-List message posted by: todd@toddtown.com
Hey guys. I realize this is off topic, so please forgive me. I am a
private pilot with about 200 hours, most of it 15 or more years ago.
Seriously thinking about getting instrument, commercial and CFI so I can
teach a little on the side for fun, maybe a retirement career later on.
Since I have started and stopped my flight training more times than I can
think about because money dried up, I am considering getting a loan
(12-15k) to complete my training. Anyone know a financial institution that
provides loans for flight training? Signature/Collateral-less loans are
pretty high interest rates, I am looking for something more catered to
student type loans. Thanks.
Todd
do not archive
Message 3
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| Subject: | Re: microswitch, update |
--> Zenith-List message posted by: Crvsecretary@aol.com
Discontinued microswitch?
Have you tried an electrical surplus dealer?
There are quite a few on them listed in a Yahoo search for surplus
electrical supplies, some of which specialize in switches.
I was once looking for an out-of-production IC for a piece of industrial
equipment and when I called _http://www.mouser.com/_ (http://www.mouser.com/)
they put me in touch with a surplus place in Florida, but I cannot remember
exactly who they are. i think they were in Jacksonville. I virtually stole
thier remaining stock!!
I'm really sorry I cannot remember the name of the place...
Regards,
Tracy Smith
Naugatuck, CT
601xl tail 85%
do not archive
In a message dated 3/4/2005 10:07:37 PM Eastern Standard Time,
zsmith3rd@earthlink.net writes:
--> Zenith-List message posted by: Zed Smith <zsmith3rd@earthlink.net>
Subject: microswitch
Have you looked at www.digikey.com
Lots of "OMRON" and "Cherry" brand stuff in Section G of the printed catalog.
Didn't look at web site, but catalog shows dimensions of product
After actually looking at the Digi-Key site, its Section H, not G.
And if it is "snap switches", they start at page 64 or so on the PDF
download section.
I've purchased from this site several times, never a problem.
regards again
zed/701/r912/etc etc
do not archive
Message 4
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| Subject: | Re: OT: Financing for Flight Training |
--> Zenith-List message posted by: "Stephen R. Look" <slook@mchsi.com>
I'm using Pilot Finance. http://www.pilotfinance.com
They have been great to work with and it makes this adventure quite affordable.
Steve
do not archive
Steve Look
Monticello, IL
601XL - rudder
"Dogs have owners, Cats have staff"
Message 5
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| Subject: | bad parts I got from> "professionals" |
--> Zenith-List message posted by: Grant Corriveau <grantc@ca.inter.net>
> Sometimes because of my own
> mistakes and sometimes because of bad parts I got from
> "professionals".
One of my biggest setbacks and learning experiences in building my aircraft
was NOT to take anything for granted just because it was being supplied by a
"professional"... Most of my biggest headaches were due to parts supplied
by "professional" shops, etc..
Various errors in the diagrams and parts from Zenair
Fuel gauge didn't work
canopy cover didn't fit
engine supplied with inadequate accessories
- air inlet box failure; carb heat system failure; alternator drive
failure; ignition system failure; ...
IN ALL CASES the manufacturers were very service-oriented and helpful in
regulating the problems. But it was more than frustrating that such poor
quality control was in place to begin with! I lost a lot of time and
enthusiasm for my project due to these setbacks! (Not to mention the
dangers involved! - thankfully no emergency landings off-airport.)
The words 'buyer beware' apply in aviation - NO MATTER who the manufacturer
is.
Be careful out there!
--
Grant Corriveau
C-GHTF / HDS / CAM100
Message 6
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| Subject: | Tail kit size & weight? |
--> Zenith-List message posted by: "Joe Kerr" <kerrjf@charter.net>
Does anyone remember the approximate size and weight of the tail kit for the 601XL?
Will it fit in my mini-van with seats removed? Will I need to rent a truck
and how many friends do I need to find who can help on Thursday when this
thing arrives at the freight company? Thanks-Joe
Do Not Archive
Message 7
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| Subject: | Re: Tail kit size & weight? |
--> Zenith-List message posted by: Crvsecretary@aol.com
Can your minivan handle a piece of aluminum skin approx. 18"w x 6"h x 7 FEET
long ?
The horizontal stabilizer skin is the largest piece...weight is not an issue.
The elevator skin is only 12"wide with the other dimensions being close to
the same.
Bring a bunch of copy paper boxes to put all the small parts in.
Tracy Smith
Naugatuck, CT
601xl tail 85%
do not archive
In a message dated 3/5/2005 10:22:19 AM Eastern Standard Time,
kerrjf@charter.net writes:
--> Zenith-List message posted by: "Joe Kerr" <kerrjf@charter.net>
Does anyone remember the approximate size and weight of the tail kit for the
601XL? Will it fit in my mini-van with seats removed? Will I need to rent
a truck and how many friends do I need to find who can help on Thursday when
this thing arrives at the freight company? Thanks-Joe
Do Not Archive
Message 8
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| Subject: | bad parts I got from> "professionals" |
--> Zenith-List message posted by: "Cdngoose" <601xl@sympatico.ca>
Thanks Grant I have never heard a better reason for scratch building
then your endorsement below.
Mark Townsend Alma, Ontario
Zodiac 601XL , Osprey 2 serial # 751
President: Kitchener/Waterloo RAA Chapter
www.ch601.org / www.ch701.com / www.Osprey2.com
do not archive - I'm just stirring the pot again!!!
-----Original Message-----
From: owner-zenith-list-server@matronics.com
[mailto:owner-zenith-list-server@matronics.com] On Behalf Of Grant
Corriveau
Subject: Zenith-List: bad parts I got from> "professionals"
--> Zenith-List message posted by: Grant Corriveau <grantc@ca.inter.net>
> Sometimes because of my own
> mistakes and sometimes because of bad parts I got from
> "professionals".
One of my biggest setbacks and learning experiences in building my
aircraft
was NOT to take anything for granted just because it was being supplied
by a
"professional"... Most of my biggest headaches were due to parts
supplied
by "professional" shops, etc..
Various errors in the diagrams and parts from Zenair
Fuel gauge didn't work
canopy cover didn't fit
engine supplied with inadequate accessories
- air inlet box failure; carb heat system failure; alternator drive
failure; ignition system failure; ...
IN ALL CASES the manufacturers were very service-oriented and helpful in
regulating the problems. But it was more than frustrating that such
poor
quality control was in place to begin with! I lost a lot of time and
enthusiasm for my project due to these setbacks! (Not to mention the
dangers involved! - thankfully no emergency landings off-airport.)
The words 'buyer beware' apply in aviation - NO MATTER who the
manufacturer
is.
Be careful out there!
--
Grant Corriveau
C-GHTF / HDS / CAM100
Message 9
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| Subject: | Re: Tail kit size & weight? |
--> Zenith-List message posted by: "Al Young" <armyret@one-eleven.net>
Joe- The tail kit will fit fine in a mini-van. I hauled mine home in a
chevy blaizer. They will not pack it into a box but leave the pieces
individually wrapped so you can put the smaller stuff anywhere.
Al Young
N601AY- Ready for paint
Message 10
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| Subject: | Re: Tail kit size & weight? |
--> Zenith-List message posted by: "Al Young" <armyret@one-eleven.net>
Joe - Sorry, I just read the rest of your message and didn't see you mention
the "freight company". Thought you were picking up the kit in Mexico, MO.
My apologies- al Young
Do not archive
Message 11
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--> Zenith-List message posted by: Sigmo@aol.com
I tried several suppliers including that one and mouser. The mouser people
even researched it for me. The problem with the CAP flap motor is that the
mounting blocks are designed around the V3L-3 switch and require screw on terminals
due to the room allowed. I can re-design the mounting blocks and make it work
but have concerns about CAP backing up the unit if I do so.
Thank you all,I appreciate the reply
Mike Sigman 601XL
DO NOT ARCHIVE
Message 12
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"Damian and Lydia Monyoya" <montoyas7940@hotmail.com>,
<eaachapter162@yahoogroups.com>, <zenith-list@matronics.com>
--> Zenith-List message posted by: "kevinbonds" <kevinbonds@comcast.net>
Hello all
I am happy to say I got my engine this morning. It's a 110 out of a late
model Corvair (65-69). The engine code is an RH. It turns over smoothly.
Should be a great core to start my rebuild. I'm not to far along on my
airframe construction though so I will be storing it for some time.
Kevin Bonds
Nashville TN
Zodiac 601XL, Corvair powered.
Message 13
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| Subject: | off topic: racism |
--> Zenith-List message posted by: "kevinbonds" <kevinbonds@comcast.net>
I have to comment on the recent exchange. Speaking to those in the US it is
in our best interest when people from other cultures participate in the same
sort of things we do. We should welcome them and appreciate what they bring
to the table. This is not just political correctness there is a shrewd
reason for doing so. Just as when people come to this country from others
and get assistance with education in American schools we get something very
important in return. These people are being educated in Western culture and
many become sympathetic to Western ways of living. Some probably go home
more western than not. The importance of this can not be understated.
Likewise when someone from another country comes in contact with us in this
forum, we should not only respect them as human beings but should realize
that it is ignorant and counterproductive to flame them. We need people with
vested interest in our society to help offset the anti-Americanism that is
so prevalent today. I hope that others around the world know that most of us
here in the US are good people and more importantly realize the same about
them. We don't all think we are better than everyone else (this is a common
misconception about Americans). To the guy in China keep fighting the uphill
battle. I for one would love to here you are flying one day.
Kevin Bonds
Do not archive
-----Original Message-----
From: owner-zenith-list-server@matronics.com
[mailto:owner-zenith-list-server@matronics.com] On Behalf Of Gary Gower
Subject: Re: Zenith-List: about Sale
--> Zenith-List message posted by: Gary Gower <ggower_99@yahoo.com>
Most of you in USA don't realize, the heroic work some pilots (me included)
have to go though in over regulated countries of the world (aviation
Message 14
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--> Zenith-List message posted by: "Tommy Walker" <twalker@cableone.net>
I don't post much on this list, but I read it daily (sometimes several times
in order to understand what has been said). I live in the South (Alabama).
We face the same discrimination as the folks in Japan, Taiwan, India, China,
Vietnam, France (?) etc....
It is in part based on ignorance and fear.
Don't sweat the occasional comment by folks who don't know any better.
Alas, I once was as they are now, but found a better way.
There are folks on this list who will come to your defense.
:-)
Tommy Walker In Alabama
Message 15
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| Subject: | Re: OT: Financing for Flight Training |
--> Zenith-List message posted by: todd@toddtown.com
Thanks a ton, I will check them out.
Todd
> --> Zenith-List message posted by: "Stephen R. Look" <slook@mchsi.com>
>
> I'm using Pilot Finance. http://www.pilotfinance.com
> They have been great to work with and it makes this adventure quite
> affordable.
>
> Steve
>
> do not archive
>
>
> Steve Look
> Monticello, IL
> 601XL - rudder
> "Dogs have owners, Cats have staff"
>
>
Message 16
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--> Zenith-List message posted by: "Larry McFarland" <larrymc@qconline.com>
Tommy,
I for one don't think you are eithere ignorant or fearful, but you should
add Do not archive when these oblique discussions need airing :-).
Larry McFarland
Do not archive
Subject: Re: Zenith-List: about Sale
> --> Zenith-List message posted by: "Tommy Walker" <twalker@cableone.net>
>
> I don't post much on this list, but I read it daily (sometimes several
> times
> in order to understand what has been said). I live in the South
> (Alabama).
> We face the same discrimination as the folks in Japan, Taiwan, India,
> China,
> Vietnam, France (?) etc....
>
> It is in part based on ignorance and fear.
>
> Don't sweat the occasional comment by folks who don't know any better.
> Alas, I once was as they are now, but found a better way.
>
> There are folks on this list who will come to your defense.
>
> :-)
>
>
> Tommy Walker In Alabama
Message 17
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| Subject: | Unfortunate comments. |
--> Zenith-List message posted by: Gsrth@aol.com
etn industries,
I came back from a 3 week trip to China last month, and I want to say
that I have never traveled anywhere in the US or other countries of the world
where the people I met were more hospitable or friendly. Everyone I met went
well out of their way to help a visitor stumbling through the language and
frequently lost as well.
It is with great sadness that I find others in the world not as
gracious with those of another nationality. Let me offer my apologies and say that
I
am sure the majority on the list feel the same way. In fact, I'm sure we
would all be fascinated to hear more of your building experiences and the problems
you face over and beyond those we all have building our own airplane. Hang in
there with us and keep building that Zenith!
Message 18
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--> Zenith-List message posted by: Gsrth@aol.com
etn industries
I believe I forgot to add my name to my previous message.
Garth Dawson
Wilmington Delaware, USA
rudder finished, ribs all formed for wings and stabilizer.
Message 19
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--> Zenith-List message posted by: "Clyde Barcus" <barcusc@comcast.net>
Just like Kevin I had a great day as well, after helping Kevin find and load his
engine I also bought an engine from Albert. Unlike the unpleasant experience
Kevin had last week, Albert was very interested in our projects, he ask us to
show him our planes when we finish. I told him I will do better than that, I
will pick him up at a local airport and take him flying. More to the point for
you Corvair builders, he has several good crankshafts and heads along with a
lot of other corvair parts. He also tried to sell us a beautiful "66" Corvair
for $6950.00, I had to pass because I need to stick to one toy at a time. Fortunately
their are a lot more good people like Albert than there are Jerks and
bigots, I have never been snubbed by another builder regardless of where he is
from or what economic bracket he is in. That's the way it should be!
Regards:
Clyde Barcus
601 XL--- Soon to be Corvair Powered.
Do not Archive
Message 20
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| Subject: | First engine run |
--> Zenith-List message posted by: Trevor Page <webmaster@upac.ca>
The weather was nice and warm today so I took advantage of it and did a
first engine run.
The R912 80HP runs pretty nice. Very smooth @ 2000RPM but a little
choppy @ 3000 (I didn't venture past this, see the next paragraph). My
prop is not 100% setup however. I'm running a 3-blade 68" Warp Drive
with tapered tips. I currently have it set @ 15. Anyone know what the
proper pitch is for my setup?
Oil pressure was all over the place. At one point I had a steady 15PSI
@ idle, other times it was reading 10 all the way down to 3 or 4. I
don't feel good about that. Since I didn't have a lot of time to
troubleshoot I'll have to figure this out. It's probably a bad wire or
worse, a bad pressure sensor (I have an EIS for monitoring). I checked
the oil levels and they seem fine. I have a Lockwood thermostat in-line
but its well primed. Temps were right on all over. Just that pressure
thing which is critical.
Anyhow, its was nice to hear the purr ;)
Just have to fit the wings now and I'm done other than paint.
Trevor Page
601HD 99% complete
Message 21
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| Subject: | Re: First engine run |
--> Zenith-List message posted by: "Johann G." <johann@gi.is>
Hello Trevor.
I am glad for you. I will do the engine run up very soon. I did a total
teardown of the Rotax 912 UL engine, and this will require me to do a
venting of the lubrication system. This is required if the engine was
drained of all oil. Also if the prop has been spun in reverse direction
allowing air to be injected into the valve train.
Look up Service instruction SI-04-1997 R3 for this instruction.
If you do not do this procedure before first start up, you could ruin your
new engine.
Hope this helps
Johann G.
Iceland.
----- Original Message -----
From: "Trevor Page" <webmaster@upac.ca>
Subject: Zenith-List: First engine run
> --> Zenith-List message posted by: Trevor Page <webmaster@upac.ca>
>
> The weather was nice and warm today so I took advantage of it and did a
> first engine run.
>
> The R912 80HP runs pretty nice. Very smooth @ 2000RPM but a little
> choppy @ 3000 (I didn't venture past this, see the next paragraph). My
> prop is not 100% setup however. I'm running a 3-blade 68" Warp Drive
> with tapered tips. I currently have it set @ 15. Anyone know what the
> proper pitch is for my setup?
>
> Oil pressure was all over the place. At one point I had a steady 15PSI
> @ idle, other times it was reading 10 all the way down to 3 or 4. I
> don't feel good about that. Since I didn't have a lot of time to
> troubleshoot I'll have to figure this out. It's probably a bad wire or
> worse, a bad pressure sensor (I have an EIS for monitoring). I checked
> the oil levels and they seem fine. I have a Lockwood thermostat in-line
> but its well primed. Temps were right on all over. Just that pressure
> thing which is critical.
>
> Anyhow, its was nice to hear the purr ;)
>
> Just have to fit the wings now and I'm done other than paint.
>
> Trevor Page
> 601HD 99% complete
>
>
Message 22
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| Subject: | Re: Tail kit size & weight? |
--> Zenith-List message posted by: NYTerminat@aol.com
Joe
I'm not sure about the 601, but when I received my 701 tail kit, it was in a
4'x8'x2' high crate. It als had an 801 rudder that I had built in the factory.
It weighed less than 200 pounds and had 3 large garbage bags of paper stuffed
in it to keep things from moving. I just received the rest of the kit
yesterday it was much bigger and had alot more paper.
Bob Spudis
CH-701 tail kit done
Message 23
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| Subject: | Re: Weight & Balance w/repect to Battery Placement |
--> Zenith-List message posted by: <davgray@sbcglobal.net>
I am building a 601XL powered by the Corvair Engine. I have been looking on the
lists and web for some real data that would help me with the battery placement.
So far I have only heard statements without data that I could use for calculations
(such as Weights and ARMs for the wheels, engine choice and gear configuration)
When I weigh my project as it stands and make adjustments for the expected weights
of the items yet to go into the project, I am not convinced that the proverbial
wisdom of placing the batteries behind the seats is going to be best.
MY -- (What if Calculations) on moving 30 lbs of batteries from the firewall to
behind the seats can only make a difference of 2.8 to 3.2 % of the MAC which
must fall between 20% MAC to 30% MAC to be within the accepted CG. In other words
an aircraft that has a CG at 24% MAC with the batteries on the firewall would
have a CG of about 27% MAC if they were moved to behind the seats. If the
expected pilots are likely to be heavy duty types then their weight will off
set the weight of forward placement. On the other hand a 130 lb pilot flying
alone would need to carry about 40 lbs of baggage to keep the flight behind the
forward CG limit. They would find it easier to stay within the limits if the
batteries are in the rear. At either location I can find extremes that cause
both placements to fall out of the CG range. But for aircraft loaded near
gross the front placement looks best.
The wiring is less expensive, better looking, easier to do with firewall placement.
I am interested to hear from people that have hard numbers from completed projects.
It could save a lot of time if I am overlooking something.
Gary
Message 24
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| Subject: | Re: Weight & Balance w/repect to Battery Placement |
--> Zenith-List message posted by: Craig Payne <craig@craigandjean.com>
You should ask William Wynne for his numbers. Two problems: he no longer
frequents this list so you will have to e-mail him directly. And second:
his XL is a tail-dragger.
-- Craig
davgray@sbcglobal.net wrote:
> --> Zenith-List message posted by: <davgray@sbcglobal.net>
>
> I am building a 601XL powered by the Corvair Engine. I have been looking on
the lists and web for some real data that would help me with the battery placement.
> So far I have only heard statements without data that I could use for calculations
(such as Weights and ARMs for the wheels, engine choice and gear configuration)
>
> When I weigh my project as it stands and make adjustments for the expected weights
of the items yet to go into the project, I am not convinced that the proverbial
wisdom of placing the batteries behind the seats is going to be best.
>
> MY -- (What if Calculations) on moving 30 lbs of batteries from the firewall
to behind the seats can only make a difference of 2.8 to 3.2 % of the MAC which
must fall between 20% MAC to 30% MAC to be within the accepted CG. In other
words an aircraft that has a CG at 24% MAC with the batteries on the firewall
would have a CG of about 27% MAC if they were moved to behind the seats. If
the expected pilots are likely to be heavy duty types then their weight will off
set the weight of forward placement. On the other hand a 130 lb pilot flying
alone would need to carry about 40 lbs of baggage to keep the flight behind
the forward CG limit. They would find it easier to stay within the limits if
the batteries are in the rear. At either location I can find extremes that cause
both placements to fall out of the CG range. But for aircraft loaded near
gross the front placement looks best.
>
> The wiring is less expensive, better looking, easier to do with firewall placement.
>
> I am interested to hear from people that have hard numbers from completed projects.
It could save a lot of time if I am overlooking something.
>
>
> Gary
>
>
>
>
>
>
>
Message 25
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| Subject: | Re: Weight & Balance w/repect to Battery Placement |
--> Zenith-List message posted by: "Randy Stout" <n282rs@earthlink.net>
Your problem with gettin actual numbers is that there are only 2 flying
601's with Corvair powerplants that I know of. William's XL taildragger and
my HD. My engine install is different than William's because I was
installing my engine at the same time as William and had little to go on.
I'll send you a copy of my Excel spreadsheet if you want. You can punch
numbers in it and see that it's hard for me to exceed forward or aft CG.
Why do you have 30 lbs of battery? I picked up an Odyssey sealed deep cycle
battery that weighs something like 13 lbs. It sets on a shelf that I made
that is located just above the rudder pedals.
Randy Stout
n282rs"at"earthlink.net
www.geocities.com/r5t0ut21
> [Original Message]
> From: <davgray@sbcglobal.net>
> To: <zenith-list@matronics.com>
> Date: 3/5/05 7:20:46 PM
> Subject: Zenith-List: Re: Weight & Balance w/repect to Battery Placement
>
> --> Zenith-List message posted by: <davgray@sbcglobal.net>
>
> I am building a 601XL powered by the Corvair Engine. I have been looking
on the lists and web for some real data that would help me with the battery
placement.
> So far I have only heard statements without data that I could use for
calculations (such as Weights and ARMs for the wheels, engine choice and
gear configuration)
>
> When I weigh my project as it stands and make adjustments for the
expected weights of the items yet to go into the project, I am not
convinced that the proverbial wisdom of placing the batteries behind the
seats is going to be best.
>
> MY -- (What if Calculations) on moving 30 lbs of batteries from the
firewall to behind the seats can only make a difference of 2.8 to 3.2 % of
the MAC which must fall between 20% MAC to 30% MAC to be within the
accepted CG. In other words an aircraft that has a CG at 24% MAC with the
batteries on the firewall would have a CG of about 27% MAC if they were
moved to behind the seats. If the expected pilots are likely to be heavy
duty types then their weight will off set the weight of forward placement.
On the other hand a 130 lb pilot flying alone would need to carry about 40
lbs of baggage to keep the flight behind the forward CG limit. They would
find it easier to stay within the limits if the batteries are in the rear.
At either location I can find extremes that cause both placements to fall
out of the CG range. But for aircraft loaded near gross the front
placement looks best.
>
> The wiring is less expensive, better looking, easier to do with firewall
placement.
>
> I am interested to hear from people that have hard numbers from completed
projects. It could save a lot of time if I am overlooking something.
>
>
> Gary
>
>
Message 26
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| Subject: | Re: Weight & Balance w/repect to Battery Placement |
--> Zenith-List message posted by: <davgray@sbcglobal.net>
Randy, I would like to see your W&B Excel sheet.
My current thought is to use two Odyssey 17 Ah batteries with two separate battery
buses and a yearly swap of the oldest or failed capacity test of a battery.
Either battery could supply the E-Bus in an alternator out situation and each Battery
Bus would be responsible for supplying an ignition system & fuel pump.
Both batteries are on line during normal operating conditions.
If one battery is used then the weight can affect the CG by only 1.4 to 1.6 percent
of MAC when being moved between firewall and the rear of seat location.
I expect the normal loading to dominate the balance calculations.
I plan on OV protection and LV warning. As per Bob Nuckolls AeroElectric drawings.
Also, I need final placement of the items used in William Wynne's firewall
forward systems so that I don't place a battery in the way of other required
systems.
Gary Ray
Message 27
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| Subject: | Re: First engine run (oil pressure sender failure?) |
--> Zenith-List message posted by: Gary Gower <ggower_99@yahoo.com>
Trevor,
Congrats for your engine running. I want to tell you that here in our Club there
are more than 10 airplanes with R 912 installed, There have been 3 failures
of the oil pressure sender at diferent time. 1 engine was new (in his
3rd flight) so the sender can fail any time, the other two with more than 150
hours.
No big deal, just need to change the sender, Our Rotax Guru also makes a fisical
check of the oil pressure with a mechanical gauge, just to be sure that the
problem is with the sender, not with the engine.
Buy the way, 2 engines had the EIS system installed (diferent hours in each),
one the new plane and the other one 250 hours), there are other 4 planes
with EIS with no problem yet, so having or not the EIS is not a reason, has to
be the control quailty in the sender...
There are only two "parts" of the 912 engines that give problems ocassionaly:
The oil pressure sender and the mufflers that crack. For everything else the
912 are bullet proof engines.
Any first hand oil pressure senders failures in the list?
Is an inexpensive part very scary when you "loose" your oil engine pressure.
Was a nightmare to the first pilot that happened in the Club. He managed to land
the plane in a small place with no damage, but we got to trailer the plane
back, a 2 day adventure.
The other two, also happened in flight, One was fly testing over the Club and
landed clean.
The other one waited to land in an easy place, the mechanic flew there with a new
sender and his gauge, find no problem, change the sender on the spot and
both planes flew back to the Club.
Saludos
Gary Gower.
Do not archive
Trevor Page <webmaster@upac.ca> wrote:
--> Zenith-List message posted by: Trevor Page
The weather was nice and warm today so I took advantage of it and did a
first engine run.
The R912 80HP runs pretty nice. Very smooth @ 2000RPM but a little
choppy @ 3000 (I didn't venture past this, see the next paragraph). My
prop is not 100% setup however. I'm running a 3-blade 68" Warp Drive
with tapered tips. I currently have it set @ 15. Anyone know what the
proper pitch is for my setup?
Oil pressure was all over the place. At one point I had a steady 15PSI
@ idle, other times it was reading 10 all the way down to 3 or 4. I
don't feel good about that. Since I didn't have a lot of time to
troubleshoot I'll have to figure this out. It's probably a bad wire or
worse, a bad pressure sensor (I have an EIS for monitoring). I checked
the oil levels and they seem fine. I have a Lockwood thermostat in-line
but its well primed. Temps were right on all over. Just that pressure
thing which is critical.
Anyhow, its was nice to hear the purr ;)
Just have to fit the wings now and I'm done other than paint.
Trevor Page
601HD 99% complete
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