Today's Message Index:
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1. 12:18 AM - Re: Using a key Ignition switch with a Rotax 912 (Etienne Phillips)
2. 07:13 AM - Re: Using a key Ignition switch with a Rotax 912 (rampil)
3. 07:44 AM - Re: Using a key Ignition switch with a Rotax 912 (Robert L. Nuckolls, III)
4. 02:00 PM - Z-11 + aux battery and diode bridge rectifier problem (Paul Eckenroth)
5. 02:01 PM - Re: Using a key Ignition switch with a Rotax 912 (rampil)
6. 04:52 PM - Bussman fuse blocks (Tom Barter)
7. 05:55 PM - Re: Bussman fuse blocks (Allen Fulmer)
8. 06:28 PM - Re: Bussman fuse blocks ()
Message 1
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| Subject: | Re: Using a key Ignition switch with a Rotax 912 |
On 15 Jan 2009, at 3:08 AM, Floyd wrote:
> I do not have a key in the ignition system but I doubt anyone
> could figure out how to start the plane...
Of course there's nothing stopping someone capable of flying the
aircraft (generally a pilot) from turning on the mags and hand-
swinging the prop ;-)
Message 2
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| Subject: | Re: Using a key Ignition switch with a Rotax 912 |
I actually use a keyed ignition switch on my 912ULS.
It is a Bendix switch and has been working as planned for 5 years.
My a/c is not the only rotax powered, keyed system I know of.
Any trip to SnF or Osh will illustrate this is a popular system config.
If I were you Les, I would ignore the comments of anyone who does
not have direct, hands on experience with the 912/914
--------
Ira N224XS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=224899#224899
Message 3
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| Subject: | Re: Using a key Ignition switch with a Rotax 912 |
At 09:11 AM 1/15/2009, you wrote:
>
>I actually use a keyed ignition switch on my 912ULS.
>It is a Bendix switch and has been working as planned for 5 years.
>My a/c is not the only rotax powered, keyed system I know of.
>Any trip to SnF or Osh will illustrate this is a popular system config.
>
>If I were you Les, I would ignore the comments of anyone who does
>not have direct, hands on experience with the 912/914
The Rotax ignition systems use the same switching
conventions as a legacy magneto. I.e. closing the
switch kills the ignition system. The standard
off-l-r-both-start switches work fine.
Keyed switches were the brain-child of the airplane-
in-every-garage thinking of those who were building
aviation manufacturing empires with grandiose plans.
The idea was that the more your airplane looked/felt
like an automobile, the better. The earliest single
engine aircraft were not fitted with key-locked mag
switches. Certainly airplanes with two or more engines
were and are not fitted with multiple key-locked switches.
I once brought a rental aircraft home after loosing
the key by wiggling the ring terminals on the back of
the mag switch until they broke off. I propped the
engine and came home. It took ten minutes with a
crimp tool to fix the wiring after I got back.
If someone is capable of flying your airplane and
has evil intent upon depriving you of possession,
the key-lock switch is a trivial impediment to their
purpose. This is the better theft deterrent . . .
http://aeroelectric.com/Pictures/Misc/AC_Theft_Protection.jpg
This particular airplane's doors can be opened in
seconds with a lock-pick and turning wrench. The super-
hard chain and lock are entirely another matter . . .
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
Message 4
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| Subject: | Z-11 + aux battery and diode bridge rectifier problem |
I have an RV9A wired as per Z-11 with a 7A aux battery as an EFIS keep alive
during start. This has worked well for 200 hours. Lately the EFIS has been
graying out during engine starts which implies that the aux battery is being
tapped for other than the electronics during engine start.
The batteries are isolated using two diode bridge rectifiers from B&C. The
E bus which feed the EFIS and other electronics gets it's power from the
main bus through one of the bridge rectifiers. Both of the batteries power
the main bus through individual contactors. The E bus is also powered
through the second bridge rectifier by both batteries direct and then
controlled by the E bus switch. Normal start is main battery contactor on,
aux battery contactor off, and E bus switch on. This should isolate the aux
battery to the E bus until the aux battery contactor is turned on after
engine start.
I have checked both diode assemblies to see that they are allowing current
to flow in the correct direction and they are not allowing backfeed.
Everything checks out properly using the voltmeter. However it seems to me
that the problem must lie with the diodes since they are the only link
between the batteries with the aux battery contactor off. Can a diode
function correctly under low load conditions and then temporarily break down
under start conditions.
Any ideas as to how I should proceed. Please keep in mind that I have read
the AeroElectric Connection and wired my RV9 but have no formal electrical
knowledge beyond this.
Paul Eckenroth
Message 5
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| Subject: | Re: Using a key Ignition switch with a Rotax 912 |
I can't think of a single aircraft you could park in my old neighborhood
of 168th & Broadway, NYC and have it be there in the morning, hardened
chain and all.
Maybe that why the TSA has locked up all the airports?
I'm just kidding guys 8)
--------
Ira N224XS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=224981#224981
Message 6
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| Subject: | Bussman fuse blocks |
I am looking for information on Bussman fuse blocks that have the terminals
on the back side of the block. I would like to mount the fuseblock under
the panel on a hinged plate that would swing down for access to the fuses.
I know that there have been references to this, but an archive search does
not seem to find it. I found the 15300 series on the Bussman site, but am
not sure of the terminals used. Any help appreciated.
Regards,
Tom Barter
Kesley, IA
Avid Magnum - wiring
Message 7
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| Subject: | Bussman fuse blocks |
I saved an email with this link:
http://home.earthlink.net/~dswartzendruber/
I used standard bussman fuse blocks however.
Allen Fulmer
RV7 Wiring
Eggenfellner E6Ti hanging
N808AF reserved
Alexander City, AL
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Tom Barter
Sent: Thursday, January 15, 2009 6:48 PM
To: aeroelectric-list@matronics.com
Subject: AeroElectric-List: Bussman fuse blocks
I am looking for information on Bussman fuse blocks that have the
terminals on the back side of the block. I would like to mount the
fuseblock under the panel on a hinged plate that would swing down for access
to the fuses. I know that there have been references to this, but an
archive search does not seem to find it. I found the 15300 series on the
Bussman site, but am not sure of the terminals used. Any help appreciated.
Regards,
Tom Barter
Kesley, IA
Avid Magnum - wiring
Message 8
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| Subject: | Re: Bussman fuse blocks |
Try this link
http://www.mihdirect.biz/
I purchased one and actually like it better than the one sold at B&C.
Jerry
---- Tom Barter <kesleyelectric@chooseblue.coop> wrote:
> I am looking for information on Bussman fuse blocks that have the terminals
> on the back side of the block. I would like to mount the fuseblock under
> the panel on a hinged plate that would swing down for access to the fuses.
> I know that there have been references to this, but an archive search does
> not seem to find it. I found the 15300 series on the Bussman site, but am
> not sure of the terminals used. Any help appreciated.
>
>
>
> Regards,
>
>
>
> Tom Barter
>
> Kesley, IA
>
> Avid Magnum - wiring
>
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