Today's Message Index:
----------------------
1. 04:38 PM - Electrical setup for my 3300 (pequeajim)
2. 04:56 PM - Re: Electrical setup for my 3300 (Jeff)
3. 05:12 PM - Re: Electrical setup for my 3300 (pequeajim)
4. 05:34 PM - Re: Re: Electrical setup for my 3300 (Jeff)
5. 07:16 PM - Re: JabiruEngine-List Digest: 0 Msgs - 02/17/08 (PaulCDJ@aol.com)
6. 08:02 PM - Re: Electrical setup for my 3300 (Noel Loveys)
7. 08:34 PM - Re: Electrical setup for my 3300 (Noel Loveys)
8. 08:38 PM - Re: Re: Electrical setup for my 3300 (Noel Loveys)
Message 1
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| Subject: | Electrical setup for my 3300 |
I am going to use a Composite Design power panel in the Lightning that I am building.
This has a split power toggle switch on it (master/alternator). The panel
wants to see power from a battery solonoid (like a Cessna), and not wired
direct.
My engine is a Jabiru 3300 and most of the aircraft built by the Jabiru USA guys
just takes power directly off the battery to a 25-35 amp master breaker switch.
Based on this, I have a couple of questions:
Why does Cessna use the extra solenoid?
Why do the Jabiru guys use a breaker switch and not the extra coil like the Cessna
guys? Is there an advantage of one over the other?
Thanks ahead of time for the help...
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=164900#164900
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| Subject: | Electrical setup for my 3300 |
When I last talked to Pete about this, his answer was that you can use or
not use a battery solenoid as you please. With help from others on the
list, I used a battery solenoid mainly to keep all the "live" wires in front
of the firewall when the master is off. Since the master is actually
grounding the contactor (solenoid), there is no power passing it when it is
not grounded. Mine is located close to the battery on the engine side of
the firewall and is the continuous type. Sounds like you can easily make
your Composite Design box happy. Depending on the alternator (three phase
or single phase), the alternator hookup is slightly different too.
Jeff D
-----Original Message-----
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of pequeajim
Sent: Monday, February 18, 2008 7:35 PM
Subject: JabiruEngine-List: Electrical setup for my 3300
I am going to use a Composite Design power panel in the Lightning that I am
building. This has a split power toggle switch on it (master/alternator).
The panel wants to see power from a battery solonoid (like a Cessna), and
not wired direct.
My engine is a Jabiru 3300 and most of the aircraft built by the Jabiru USA
guys just takes power directly off the battery to a 25-35 amp master breaker
switch. Based on this, I have a couple of questions:
Why does Cessna use the extra solenoid?
Why do the Jabiru guys use a breaker switch and not the extra coil like the
Cessna guys? Is there an advantage of one over the other?
Thanks ahead of time for the help...
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=164900#164900
Message 3
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| Subject: | Re: Electrical setup for my 3300 |
Thanks Jeff for the quick reply. I guess I could mount my battery solenoid right
next to the one for the starter.
Where did you buy your from, and was there a specific type?
I was thinking of using this master relay from Spruce.
http://www.aircraftspruce.com/catalog/elpages/masterrelay.php
It is light and easy to wire up?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=164911#164911
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| Subject: | Re: Electrical setup for my 3300 |
As I remember, it came from B&C Specialty and had the diode already wired up
saving just a bit of extra work. I have also used Terminal Town, Aircraft
Spruce, and others for electrical stuff. And yes, I mounted the two
solenoids close together. A picture is attached.
Jeff
Thanks Jeff for the quick reply. I guess I could mount my battery solenoid
right next to the one for the starter.
Where did you buy your from, and was there a specific type?
Message 5
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| Subject: | Re: JabiruEngine-List Digest: 0 Msgs - 02/17/08 |
Hi,
Good work you do, however can you take me off the list?
Thanks
Paul de Jung
**************Ideas to please picky eaters. Watch video on AOL Living.
(http://living.aol.com/video/how-to-please-your-picky-eater/rachel-campos-duffy/
2050827?NCID=aolcmp00300000002598)
Message 6
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| Subject: | Electrical setup for my 3300 |
I'll be honest here I had to read your question a couple of times to get the
gist of what you were asking.
Why does Cessna use a solenoid on the battery... simply to isolate the
battery from the rest of the aircraft.
The reason to do it through a solenoid is to allow for lighter wiring
carrying less amperage to the panel/switch/circuit breaker. Also when the
current provided by the battery get's low enough the solenoid will open not
allowing the battery to completely discharge.
The use of the solenoid also gives a level of protection to the heavy cable
going from the battery to the starter. One place the solenoid could be
turned off is if the starter jammed in the on position. Shutting down the
battery would also shut down power to the starter motor.
The Cessna also has a second solenoid to automatically connect ground power
to the airplane for starting through the exterior connection. One nice side
to that relay is the exterior connector can't be used to blow up air
mattresses etc.
Darned if I know if it is possible to short the electrical system through
the alternator/generator but if it is possible, then the double switches
allow the pilot to isolate one power system from the other. Also the
engines don't require electrical power to run unless they have electric fuel
pumps so operation on batteries only, should last for several hours if
unnecessary loads are shut down.
My plane only has a 582 in it right now but I rewired it with a solenoid at
the battery to provide power to the starter. I have a fused link at the
solenoid protecting the energizer wire to the master switch. The master
switch only needs to connect that wire to ground to energize the master
relay. My generator is connected to the power buss through a circuit
breaker. After all it is only 15A. I also have a small wire from the
supply side of the relay that only powers my clock
BTW the solenoid used is not a starter solenoid. Starter solenoids will
heat up and possibly burn out in short order. The relay I used is one from
a trailer supply outlet and is normally used to wire auxiliary batteries to
cars so when the car is stopped the main battery is disconnected from the
trailer power. Not having the relay in there can be embarrassing when you
want to start the car again only to find you have run both batteries flat.
Noel
-----Original Message-----
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of pequeajim
Sent: Monday, February 18, 2008 9:05 PM
Subject: JabiruEngine-List: Electrical setup for my 3300
I am going to use a Composite Design power panel in the Lightning that I am
building. This has a split power toggle switch on it (master/alternator).
The panel wants to see power from a battery solonoid (like a Cessna), and
not wired direct.
My engine is a Jabiru 3300 and most of the aircraft built by the Jabiru USA
guys just takes power directly off the battery to a 25-35 amp master breaker
switch. Based on this, I have a couple of questions:
Why does Cessna use the extra solenoid?
Why do the Jabiru guys use a breaker switch and not the extra coil like the
Cessna guys? Is there an advantage of one over the other?
Thanks ahead of time for the help...
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=164900#164900
Message 7
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| Subject: | Electrical setup for my 3300 |
In the C-185 the battery and two relays (1 for exterior power) are behind
the cargo compartment behind the passenger compartment... So even with the
relays the heavy hot wire has to pass under the floor up to the engine
compartment. The run from the battery to the main relay is very short as
both relays are mounted to the exterior of the battery box.
The exterior power relay has a diode on the energizer line so if the
connector is reverse wired the relay will not make the connection with the
AC battery.
Noel
-----Original Message-----
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of Jeff
Sent: Monday, February 18, 2008 9:24 PM
Subject: RE: JabiruEngine-List: Electrical setup for my 3300
<jeffrey_davidson@earthlink.net>
When I last talked to Pete about this, his answer was that you can use or
not use a battery solenoid as you please. With help from others on the
list, I used a battery solenoid mainly to keep all the "live" wires in front
of the firewall when the master is off. Since the master is actually
grounding the contactor (solenoid), there is no power passing it when it is
not grounded. Mine is located close to the battery on the engine side of
the firewall and is the continuous type. Sounds like you can easily make
your Composite Design box happy. Depending on the alternator (three phase
or single phase), the alternator hookup is slightly different too.
Jeff D
-----Original Message-----
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of pequeajim
Sent: Monday, February 18, 2008 7:35 PM
Subject: JabiruEngine-List: Electrical setup for my 3300
I am going to use a Composite Design power panel in the Lightning that I am
building. This has a split power toggle switch on it (master/alternator).
The panel wants to see power from a battery solonoid (like a Cessna), and
not wired direct.
My engine is a Jabiru 3300 and most of the aircraft built by the Jabiru USA
guys just takes power directly off the battery to a 25-35 amp master breaker
switch. Based on this, I have a couple of questions:
Why does Cessna use the extra solenoid?
Why do the Jabiru guys use a breaker switch and not the extra coil like the
Cessna guys? Is there an advantage of one over the other?
Thanks ahead of time for the help...
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=164900#164900
Message 8
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| Subject: | Re: Electrical setup for my 3300 |
That's the beast you want... Price is pretty good too!
To keep your always hot 4-0 cable as short as possible mount your relay
right on the outside of your battery box.
Noel
-----Original Message-----
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of pequeajim
Sent: Monday, February 18, 2008 9:40 PM
Subject: JabiruEngine-List: Re: Electrical setup for my 3300
Thanks Jeff for the quick reply. I guess I could mount my battery solenoid
right next to the one for the starter.
Where did you buy your from, and was there a specific type?
I was thinking of using this master relay from Spruce.
http://www.aircraftspruce.com/catalog/elpages/masterrelay.php
It is light and easy to wire up?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=164911#164911
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