Today's Message Index:
----------------------
1. 01:38 AM - Re: RV-List Digest: 23 Msgs - 05/19/08 (Mick Muller)
2. 04:46 AM - Battery Problem (Denis Walsh)
3. 05:04 AM - Re: Battery problem (Chuck Jensen)
4. 07:15 AM - Re: Battery Problem (Ron Lee)
5. 09:14 AM - Re: Battery Problem (Tracy Crook)
6. 09:54 AM - Re: Mike Terpstra (J. Mcculley)
7. 12:57 PM - Re: Mike Terpstra (scott bilinski)
8. 01:58 PM - Re: Battery problem (Richard Seiders)
9. 03:03 PM - Battery problem solved, created a serious problem with KX125 (Charles Heathco)
10. 08:13 PM - Re: Battery Problem (Fiveonepw@aol.com)
11. 09:24 PM - Re: Current crop of pitot tubes (rleffler)
Message 1
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| Subject: | Re: RV-List Digest: 23 Msgs - 05/19/08 |
Hello Electric buffs. I have a question that may appear stupid, but I'll
take my chances.
Below is a statement made by a lister recently:
>Subject: Re: RV-List: Battery problem
>
>Other batteries work too.
>
>The problem with the odysseys is that the biggest one which fits inside the
>battery box is only 18ah, and that is not big enough for my preference
>(electric ignition, fuel pumps, and flight instruments).
If I had electric ignition fuel pumps flight instruments etc that when
running should use say 30 amps in total.
If my alternator that was putting out 55Amp hours, why should I worry that
the battery was not rated at 30 amps? The main task of the battery is to
start the big fan at the front. Once that is running, the Alternator should
be able to handle the entire load and then some. So the real question should
be, what is my essential bus load , and how long do I want my battery to
last b4 I need to get on the ground?? Wouldn't it make more sense to have
two batteries rated at say 18 amp/hours each rather than a single battery
rated at 35 amp hours??
Mick
Message 2
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Not a stupid question. Rather an excellent observation, and a good
prompt for a discussion of battery needs for our RVs.
First, you should check the subject to insure the readers respond .
Most would probably contend that the primary role for the aircraft
battery is to carry you to a safe landing in the event of an
alternator failure. Secondary is the start. Therefore the 18 amp is
good for start since it has a good cranking amperage; however could be
marginal if you have a heavy essential load and a need to go quite a
way if alternator fails.
So the debate will rage on regarding the relative merits of a failure
warning system, an essential bus, a backup battery/alternator, and or
a bigger battery. A further consideration is a dedicated battery for
ignition or EFIS.
My current preference for my VFR RV is to have the odyssey but with
magneto ignition and a light load which includes an internal battery
for both GPS and EFIS. But if I had an automotive type powerplant
with electric fuel feed. EEC, and ignition, I would feel different.
On May 20, 2008, at 2:29 AM, Mick Muller wrote:
>
> Hello Electric buffs. I have a question that may appear stupid, but
> I'll take my chances.
> Below is a statement made by a lister recently:
>
>> Subject: Re: RV-List: Battery problem
>>
>> Other batteries work too.
>>
>> The problem with the odysseys is that the biggest one which fits
>> inside the
>> battery box is only 18ah, and that is not big enough for my
>> preference
>> (electric ignition, fuel pumps, and flight instruments).
>
> If I had electric ignition fuel pumps flight instruments etc that
> when running should use say 30 amps in total.
>
> If my alternator that was putting out 55Amp hours, why should I
> worry that the battery was not rated at 30 amps? The main task of
> the battery is to start the big fan at the front. Once that is
> running, the Alternator should be able to handle the entire load and
> then some. So the real question should be, what is my essential bus
> load , and how long do I want my battery to last b4 I need to get on
> the ground?? Wouldn't it make more sense to have two batteries rated
> at say 18 amp/hours each rather than a single battery rated at 35
> amp hours??
> Mick
>
>
Message 3
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David,
Unless you need the extra battery weight of a larger battery for W&B, as
some canards do, why not install an E-Buss so you can shed load. The
18ah battery will last as long as a 30ah one if you shed load properly,
and it will get you home equally as well, including IFR. But hey, if
its a 'personal preference thing', load 'em up, you're entitled to
whatever floats your boat, or anchors your airplane.
Chuck Jensen
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com]On Behalf Of David Leonard
Sent: Tuesday, May 20, 2008 1:35 AM
Subject: Re: RV-List: Battery problem
Other batteries work too.
The problem with the odysseys is that the biggest one which fits inside
the battery box is only 18ah, and that is not big enough for my
preference (electric ignition, fuel pumps, and flight instruments).
--
David Leonard
Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net
On Mon, May 19, 2008 at 3:04 PM, Chuck Jensen < cjensen@dts9000.com>
wrote:
Odysseys work...why anguish over it.
Chuck Jensen
-----Original Message-----
From: owner-rv-list-server@matronics.com [mailto:
owner-rv-list-server@matronics.com]On Behalf Of David Leonard
Sent: Monday, May 19, 2008 3:29 PM
Subject: Re: RV-List: Battery problem
With my electrically dependant ignition and avionics, I wanted to
maximize the battery that will fit into the stock battery box. This is
what I came up with, after hearing Someone else had good luck with
panasonic sealed lead batteries:
http://www.panasonic.com/industrial/battery/oem/images/pdf/Panasonic_VRLA
_LC-R1233P.pdf
it is 33 Amp.hr, deep cycle, and can be mounted in any position like the
oddessey. In fact, the description seems very much like that of the
oddessy batteries:
http://www.panasonic.com/industrial/battery/oem/chem/seal/index.html
Have used mine for a year now with great success. I paid about $110 for
it.
--
David Leonard
Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net
Message 4
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| Subject: | Re: Battery Problem |
>>> The problem with the odysseys is that the biggest one which fits inside
>>> the >>> battery box is only 18ah, and that is not big enough for my
>>> preference >>> (electric ignition, fuel pumps, and flight instruments).
This is INCORRECT. I have an Odyssey 925 in my RV-6A battery
box and am ASSUMING that it is the stock battery box.
You can get the dimensions of the 925 easily to see if it will fit.
Ron Lee
Message 5
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| Subject: | Re: Battery Problem |
I used the Odessey 925 as well. I did have to turn it so the terminals were
on the side to fit my stock RV-8 battery mount (not a problem for the
battery as far as I know). My 'alternator out' battery drain is about 12
amps for all system in my 'all electric' rotary engine installation.. I can
reduce that to about 9 amps by switching off non-essential stuff in a pinch.
Tracy Crook
On Tue, May 20, 2008 at 10:11 AM, Ron Lee <ronlee@pcisys.net> wrote:
>
> The problem with the odysseys is that the biggest one which fits inside
>>>> the >>> battery box is only 18ah, and that is not big enough for my
>>>> preference >>> (electric ignition, fuel pumps, and flight instruments).
>>>>
>>>
> This is INCORRECT. I have an Odyssey 925 in my RV-6A battery
> box and am ASSUMING that it is the stock battery box.
>
> You can get the dimensions of the 925 easily to see if it will fit.
>
> Ron Lee
>
>
Message 6
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| Subject: | Re: Mike Terpstra |
Try www.411.com and input his address to get a phone number.
---------------------------------------------------------------------
BRUCE GRAY wrote:
> Hope someone can help. I breifly met Mike Terpstra in Yerrington, NV.
> when he flew in to meet with his painter, his RV8 is to be painted in a
> couple weeks. Anyway, I failed to get his # or anything because I now
> have some questions for him and don't know how so reach him. I do have
> an address but if someone out them knows him and I can get his e-mail or
> something that would be great.
> I'm working on an 8 myself and want to share some idea's.
>
> TIA,
>
> Bruce Gray
> RV8 Fuse
> Finishing, Wiring, & You name it!
----------------------------------------------------------------------------------
Message 7
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| Subject: | Re: Mike Terpstra |
I found him on line at Phonenumber.com. All the information is on line you just
might have to put a few of the pieces together.
Scott
----- Original Message ----
From: J. Mcculley <mcculleyja@starpower.net>
Sent: Tuesday, May 20, 2008 9:50:05 AM
Subject: Re: RV-List: Mike Terpstra
Try www.411.com and input his address to get a phone number.
---------------------------------------------------------------------
BRUCE GRAY wrote:
> Hope someone can help. I breifly met Mike Terpstra in Yerrington, NV.
> when he flew in to meet with his painter, his RV8 is to be painted in a
> couple weeks. Anyway, I failed to get his # or anything because I now
> have some questions for him and don't know how so reach him. I do have
> an address but if someone out them knows him and I can get his e-mail or
> something that would be great.
> I'm working on an 8 myself and want to share some idea's.
>
> TIA,
>
> Bruce Gray
> RV8 Fuse
> Finishing, Wiring, & You name it!
----------------------------------------------------------------------------------
Message 8
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| Subject: | Re: Battery problem |
Using the lawnmower battery for 550 hrs with no problems. I replace
it every other year regardless of it appearing to be in good
operating condition. Know of at least 3 other rv drivers doing the same.
Dick
At 04:03 PM 5/19/2008, you wrote:
>Charles Heathco wrote:
>>I have to replace batty, rg25xc now near $200. Ive been told that
>>300 amp cold cranking lawntractor batty would serve just as well.
>>Im not sure, anybody here have experience or knowledge about this?
>I've a little tractor battery in my Grumman ...... which I switch
>out with a core battery every annual. It's only 4 years old, and
>since I don't document it ;-) I don't know how long the last one lasted!!!
>Linn
>do not archive
>>Charlie Heathco
>>
>>
>>
>>
>>href="http://www.matronics.com/Navigator?RV-List">http://www.matronics.com/Navigator?RV-List
>> href="http://forums.matronics.com">http://forums.matronics.com
>>
>>href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
>>
>
>
><http://www.matronics.com/Navigator?RV-List>http://www.matronics.com/Navigator?RV-List
><http://www.matronics.com/contribution>http://www.matronics.com/contribution
>
>Checked by AVG.
>5/20/2008 6:45 AM
Message 9
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| Subject: | Battery problem solved, created a serious problem with KX125 |
I found a 35ah batty SLA local (ub12350 by universal) and failed to note
that pos and neg were reversed from the concord. Yes I put leads on
wrong and of course it wounmlnt crank so i flipped on all the swts and
blew 5 amp radio fuse and one other 5 amp havent found out what it
drives yet. I got batty cables fixed and replaced fuses which blew again
when turned on the radio. Anybody havave some experience with KX125 and
have an idea what i might have done? Charlie Heathco
Message 10
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| Subject: | Re: Battery Problem |
In a message dated 05/20/2008 6:49:40 AM Central Daylight Time,
denis.walsh@comcast.net writes:
Not a stupid question. Rather an excellent observation, and a good
prompt for a discussion of battery needs for our RVs.
>>>
Discussion: One thing I think is often missed is that one should always
consider their battery as a "reservoir" of energy, only capable of offering what
it
has on board. If the alternator goes Tango Uniform shortly after departure,
reservoir is depleted somewhat from bringing the mighty Lycoming to life. And
if extended cranking prior to departure were the case, (cold temps, hot
starts, blown procedure, whatever...) reservoir just might be quite a bit lower
than typical. Methinks it wise to consider remaining battery available based on
general condition, plus most recent consumption & time recharging in the event
of a failure...
Mark
**************Wondering what's for Dinner Tonight? Get new twists on family
favorites at AOL Food.
(http://food.aol.com/dinner-tonight?NCID=aolfod00030000000001)
Message 11
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| Subject: | Re: Current crop of pitot tubes |
Warren just posted an update to his site.
www.gretzaero.com
NOTICE: Good News!!
The heated Pitot tube part of Gretz Aero, LLC is pending a sale to a new owner!
This transfer of this part of the business will take place very soon. It will
not be long before the GA-1000 and the GA-500 are again available under a different
ownership. I hope you will be content in waiting a short time until everything
is back up and running. Thank you to all of you who have contacted me
and want to purchase the GA-1000 or GA-500 and are waiting until it is in production
again.
I enjoy developing new aviation products. Selling the heated Pitot part of my
business will allow me the time to bring some of my newest ideas into product.
I fully expect to continue with the mounting bracket part of the business and
continue to bring out new products for the aviation market.
Very soon I will make an announcement on this website disclosing the name of the
new owner and provider of the GA-1000 and GA-500. At that time I will give
the contact information for the business where you can order these fine products
Warren Gretz
--------
Bob Leffler
N410BL - Wings
RV-10 #40684
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=184136#184136
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