Today's Message Index:
----------------------
1. 06:22 AM - Re: Electrical System Review (user9253)
2. 07:16 AM - Inline connections needed? (with little space) (donjohnston)
3. 07:42 AM - Re: Inline connections needed? (with little space) (Bob McCallum)
4. 08:49 AM - Re: Electrical System Review (Dennis A Glaeser)
5. 09:16 AM - Re: Inline connections needed? (with little space) (donjohnston)
6. 10:10 AM - Re: Re: Inline connections needed? (with little space) (Bob McCallum)
7. 10:37 AM - Re: Re: Inline connections needed? (with little space) (R. curtis)
8. 12:34 PM - Re: Re: Inline connections needed? (with little space) (Ken)
9. 02:33 PM - Re: Inline connections needed? (with little space) (donjohnston)
10. 04:01 PM - Re: Re: Inline connections needed? (with little space) (Richard Girard)
11. 04:21 PM - Re: Inline connections needed? (with little space) (donjohnston)
12. 05:41 PM - Re: Location of Batteries and Master Relays (Robert L. Nuckolls, III)
Message 1
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| Subject: | Re: Electrical System Review |
> Of concern is that I don't see any reverse polarity protection from the Ground
Power Jack. How would I achieve it with what I've got?
The diode located under the GND PWR switch provides reverse polarity protection,
as long as the polarity is not reversed after pulling in the Ground PWR contactor.
Someone could trip over the jumper cables and pull them off the GND PWR
Battery. Then they could put them back on backwards. But that is a remote
possibility.
If that is a crowbar-type over-voltage module, it is not wired correctly. Its
upper wire needs to be removed from the GND PWR Plug and connected to the wire
that goes between the diode and 2 amp circuit breaker. Then connect a 4 AWG
cable between the GND PWR Plug and the Ground PWR contactor.
Joe
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=408726#408726
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| Subject: | Inline connections needed? (with little space) |
I find myself stuck (again) and cant' decide on how to proceed. :(
I'm working on wiring an overhead switch panel with about 10 switches. The space
is rather tight. Because of that, I had to use some switches with really small
bodies to fit in the area behind the panel. The only connection types are solder
lugs.
So now I've got to decide on how to wire them. I could solder the wires to the
switches and run the wires directly to the mags, starter, master, etc.
Or I could put in male/female faston connectors or knife connectors.
I feel like hard wiring a switch directly to the controlled device is a bad idea
since trying to solder a new switch in that position doesn't look like any fun.
But what's the likelyhood of a switch failure? If it's not likely, then maybe it's
not a bad idea. One of my thoughts during this build has been ease of service.
But there's a point of diminishing returns that has to be considered.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=408732#408732
Message 3
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| Subject: | Inline connections needed? (with little space) |
One thought=3B
Is the panel removable?? Or can it be made removable?? Solder all the switc
h wires to the switches and bring them to a single DB series connector (15
? 25? pin) and in the event of future switch replacement=2C pop out the pa
nel=2C unplug it =2C make the replacements/repairs on the bench and re-inst
all the panel.
Bob McC
> Subject: AeroElectric-List: Inline connections needed? (with little space
)
> From: don@velocity-xl.com
> Date: Tue=2C 17 Sep 2013 07:15:52 -0700
> To: aeroelectric-list@matronics.com
>
om>
>
> I find myself stuck (again) and cant' decide on how to proceed. :(
>
> I'm working on wiring an overhead switch panel with about 10 switches. Th
e space is rather tight. Because of that=2C I had to use some switches with
really small bodies to fit in the area behind the panel. The only connecti
on types are solder lugs.
>
> So now I've got to decide on how to wire them. I could solder the wires t
o the switches and run the wires directly to the mags=2C starter=2C master
=2C etc.
>
> Or I could put in male/female faston connectors or knife connectors.
>
> I feel like hard wiring a switch directly to the controlled device is a b
ad idea since trying to solder a new switch in that position doesn't look l
ike any fun.
>
> But what's the likelyhood of a switch failure? If it's not likely=2C then
maybe it's not a bad idea. One of my thoughts during this build has been e
ase of service. But there's a point of diminishing returns that has to be c
onsidered.
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=408732#408732
>
>
>
>
>
>
>
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>
>
>
Message 4
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| Subject: | Re: Electrical System Review |
Am I looking at it wrong, or is the battery symbol backwards in that diagra
m? It looks like the + side is connected to the ground bus ...
Dennis Glaeser
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Message 5
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| Subject: | Re: Inline connections needed? (with little space) |
Excellent idea!
It is removable.
http://www.velocity-xl.com/blog/wp-content/uploads/2013/09/2013-09-02-IMG_20130902_153556_104a.jpg
But I would need a DB-25 and I'm not certain that will fit. I will check that out.
Thanks!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=408747#408747
Message 6
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| Subject: | Re: Inline connections needed? (with little space) |
Don't forget Bob's idea for making DB series connectors smaller if space is
that much of an issue. This idea applies to the 25 pin as well as the 9. T
here is also the high density series which puts more pins in a smaller body
size.
http://www.aeroelectric.com/articles/macservo/macservo.html
Bob McC
> Subject: AeroElectric-List: Re: Inline connections needed? (with little s
pace)
> From: don@velocity-xl.com
> Date: Tue=2C 17 Sep 2013 09:15:58 -0700
> To: aeroelectric-list@matronics.com
>
om>
>
> Excellent idea!
>
> It is removable.
>
> http://www.velocity-xl.com/blog/wp-content/uploads/2013/09/2013-09-02-IMG
_20130902_153556_104a.jpg
>
> But I would need a DB-25 and I'm not certain that will fit. I will check
that out.
>
> Thanks!
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=408747#408747
>
>
>
>
>
>
>
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>
>
Message 7
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| Subject: | Re: Inline connections needed? (with little space) |
> But I would need a DB-25 and I'm not certain that will fit. I will check
> that out.
There is always the option of wiring direct initially, and then
if you have a failure later on you can cut and splice.
Roger
--
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Message 8
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| Subject: | Re: Inline connections needed? (with little space) |
DB connectors aren't really intended for significant voltage. How high
are the voltage peaks on Mag P-leads? Might be a concern for small
switches as well or is it not an issue?
Ken
On 17/09/2013 1:10 PM, Bob McCallum wrote:
> *Don't forget Bob's idea for making DB series connectors smaller if
> space is that much of an issue. This idea applies to the 25 pin as well
> as the 9. There is also the high density series which puts more pins in
> a smaller body size.
>
> http://www.aeroelectric.com/articles/macservo/macservo.html
>
> Bob McC
> *
>
> > Subject: AeroElectric-List: Re: Inline connections needed? (with
> little space)
> > From: don@velocity-xl.com
> > Date: Tue, 17 Sep 2013 09:15:58 -0700
> > To: aeroelectric-list@matronics.com
> >
> <don@velocity-xl.com>
> >
> > Excellent idea!
> >
> > It is removable.
> >
> >
> http://www.velocity-xl.com/blog/wp-content/uploads/2013/09/2013-09-02-IMG_20130902_153556_104a.jpg
> >
> > But I would need a DB-25 and I'm not certain that will fit. I will
> check that out.
> >
> > Thanks!
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=408747#408747
> >
> >
> >
> >
> &g========================>
> >
> >
>
> *
>
>
> *
>
Message 9
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| Subject: | Re: Inline connections needed? (with little space) |
klehman(at)albedo.net wrote:
> DB connectors aren't really intended for significant voltage. How high
> are the voltage peaks on Mag P-leads? Might be a concern for small
> switches as well or is it not an issue?
> Ken
Good question. I'll have to look and see what current/voltage spec for the mags
are.
Note 3 in the wiring diagram appendix says to use 20 or 22AWG wiring for the mags.
I'm inferring that to mean relatively low current. But I'll verify that nonetheless.
Thanks,
Don
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=408768#408768
Message 10
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| Subject: | Re: Inline connections needed? (with little space) |
Or you could use the machined pins for the DB 25 and mate them directly
with some shrink tubing over them and go without using the body of the
connector.
Rick Girard
On Tue, Sep 17, 2013 at 12:10 PM, Bob McCallum <
robert.mccallum2@sympatico.ca> wrote:
> *Don't forget Bob's idea for making DB series connectors smaller if space
> is that much of an issue. This idea applies to the 25 pin as well as the 9.
> There is also the high density series which puts more pins in a smaller
> body size.
>
> http://www.aeroelectric.com/articles/macservo/macservo.html
>
> Bob McC
> *
>
> > Subject: AeroElectric-List: Re: Inline connections needed? (with little
> space)
> > From: don@velocity-xl.com
> > Date: Tue, 17 Sep 2013 09:15:58 -0700
> > To: aeroelectric-list@matronics.com
>
> >
> don@velocity-xl.com>
> >
> > Excellent idea!
> >
> > It is removable.
> >
> >
> http://www.velocity-xl.com/blog/wp-content/uploads/2013/09/2013-09-02-IMG_20130902_153556_104a.jpg
> >
> > But I would need a DB-25 and I'm not certain that will fit. I will check
> that out.
> >
> > Thanks!
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=408747#408747
> >
> >
> >
> >
> &g========================**>
> >
> >
>
> *
>
> *
>
>
--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM
It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx
Message 11
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| Subject: | Re: Inline connections needed? (with little space) |
rickofudall wrote:
> Or you could use the machined pins for the DB 25 and mate them directly with
some shrink tubing over them and go without using the body of the connector.
>
> Rick Girard
>
I have room for a DB-25 behind the switches.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=408771#408771
Message 12
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| Subject: | Re: Location of Batteries and Master Relays |
At 06:04 PM 9/16/2013, you wrote:
>Bob,
>
>I am planning on using the Z14 wiring for the FADEC electronic
>ignition. I am going to use two Odyssey PC680 batteries to be
>located under the pilot/co-pilot seats. There is plenty of room for
>upright installation with ample room to also install the master
>relays, crossover relay, and starter contactor and voltage
>regulators as well. I will also have the wing leveler autopilot
>servo in the same area. This is essentially dead space that is not
>usable for storage.
Suggest the cross tie contactor be on the fire wall.
"All roads used to lead to Rome", all systems lead to
the cross-feed contactor . . . good place to tie
alternator and bus feeders.
>
>The question is do you see any issues with having all the relays,
>contactors, and voltage regulators located under the seats in the
>same area? Past experience with batteries have proven keeping them
>inside greatly extends their life but not sure if there are other
>issues I am not considering. There is plenty of room, lots more
>than behind the firewall and more accessible too.
Under the seats is fine as far as I can see . . .
others may have some caveats to offer. If the
batteries are there, then the battery busses could
be there too since you are obviously planning for
handy access.
Bob . . .
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