Today's Message Index:
----------------------
1. 04:30 AM - Re: Y connections (Art Zemon)
2. 05:08 AM - Re: Y connections (C&K)
3. 05:48 AM - Re: Y connections (Werner Schneider)
4. 07:11 AM - Re: Y connections (FLYaDIVE)
5. 09:09 AM - Re: Y connections (Robert L. Nuckolls, III)
6. 10:27 AM - Re: Y connections (Pat Little)
7. 12:01 PM - Re: CROWBARS? (bob noffs)
8. 01:46 PM - Re: Y connections (Robert L. Nuckolls, III)
9. 03:07 PM - Re: Y connections (Charlie England)
10. 03:26 PM - Re: CROWBARS? (Charlie England)
11. 05:09 PM - Re: CROWBARS? (user9253)
12. 05:23 PM - Re: Re: CROWBARS? (Charlie England)
13. 07:04 PM - Re: CROWBARS? (user9253)
14. 08:47 PM - Re: Re: CROWBARS? (Charlie England)
Message 1
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| Subject: | Re: Y connections |
Hi Pat,
I had much the same issues when I wired my BD-4C. I blogged about my
splicing at the bottom of this article on my website:
https://cheerfulcurmudgeon.com/2016/07/19/physical-electrical-considerations-when-mounting-avionics/
I found that that worked pretty well for three wires.
You will find that technique more specifically written up at
http://www.aeroelectric.com/articles/Solder_Lap_Splicing/Solder_Lap_Splices.html
Also try Googling "site:aeroelectric.com splice"
Cheers,
-- Art Z.
On Thu, Aug 9, 2018 at 12:58 AM Pat Little <roughleg@gmail.com> wrote:
> I am starting to plan out the wiring for a Zenith STOL CH750 that is being
> built here in Missoula. I have a good working knowledge of electrical and
> electronic stuff, but am not familiar with how things are done in the
> aircraft world. The first part of the aircraft wiring I am thinking through
> is the wing tip strobe lights. Since both the left and right lights are
> controlled by a single switch I need to figure out the right components and
> techniques for making a Y connection for the supply voltage lines. It seems
> all the "splice" connectors I find online are for joining two wires, not
> three. Can someone point me in the right direction?
> Thanks,
> Pat Little
>
--
https://CheerfulCurmudgeon.com/
*"We do not see the world as it is. We see the world as we are."*
Message 2
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| Subject: | Re: Y connections |
I would recommend joining the two wires at the connection to the switch.
Anything else reduces reliability and complicates future maintenance and
upgrades.
Unnecessary inline splices can be a red flag for a possible future
purchaser.
Ken
On 09/08/2018 7:30 AM, Art Zemon wrote:
> Hi Pat,
>
> I had much the same issues when I wired my BD-4C. I blogged about my
> splicing at the bottom of this article on my website:
> https://cheerfulcurmudgeon.com/2016/07/19/physical-electrical-considerations-when-mounting-avionics/
> I found that that worked pretty well for three wires.
>
> You will find that technique more specifically written up at
> http://www.aeroelectric.com/articles/Solder_Lap_Splicing/Solder_Lap_Splices.html
>
> Also try Googling "site:aeroelectric.com <http://aeroelectric.com> splice"
>
> Cheers,
> -- Art Z.
>
>
> On Thu, Aug 9, 2018 at 12:58 AM Pat Little <roughleg@gmail.com
> <mailto:roughleg@gmail.com>> wrote:
>
> I am starting to plan out the wiring for a Zenith STOL CH750 that
> is being built here in Missoula. I have a good working knowledge
> of electrical and electronic stuff, but am not familiar with how
> things are done in the aircraft world. The first part of the
> aircraft wiring I am thinking through is the wing tip strobe
> lights. Since both the left and right lights are controlled by a
> single switch I need to figure out the right components and
> techniques for making a Y connection for the supply voltage lines.
> It seems all the "splice" connectors I find online are for joining
> two wires, not three. Can someone point me in the right direction?
> Thanks,
> Pat Little
>
>
> --
> https://CheerfulCurmudgeon.com/
>
> /"We do not see the world as it is. We see the world as we are."/
Message 3
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| Subject: | Re: Y connections |
You could as well go for a switch with a double set of contacts, they do
fit in the standard spacing of switches in my plane, no splicing and
less load on the contacts.
Cheers Werner
>> On Thu, Aug 9, 2018 at 12:58 AM Pat Little <roughleg@gmail.com
>> <mailto:roughleg@gmail.com>> wrote:
>>
>> I am starting to plan out the wiring for a Zenith STOL CH750 that
>> is being built here in Missoula. I have a good working knowledge
>> of electrical and electronic stuff, but am not familiar with how
>> things are done in the aircraft world. The first part of the
>> aircraft wiring I am thinking through is the wing tip strobe
>> lights. Since both the left and right lights are controlled by a
>> single switch I need to figure out the right components and
>> techniques for making a Y connection for the supply voltage lines.
>> It seems all the "splice" connectors I find online are for joining
>> two wires, not three. Can someone point me in the right direction?
>> Thanks,
>> Pat Little
Message 4
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| Subject: | Re: Y connections |
Pat:
You DO NOT make a Y or a T connection. You run separate wires directly to
the switch. OMG! All that extra wire? All that extra weight?
Yes, that way the common failure point is the switch. And if a wire should
fail you still have power to the opposite side. AND you are not doubling
the current through a common wire.
K.I.S.S. M.E.
Barry
On Thu, Aug 9, 2018 at 1:48 AM Pat Little <roughleg@gmail.com> wrote:
> I am starting to plan out the wiring for a Zenith STOL CH750 that is being
> built here in Missoula. I have a good working knowledge of electrical and
> electronic stuff, but am not familiar with how things are done in the
> aircraft world. The first part of the aircraft wiring I am thinking through
> is the wing tip strobe lights. Since both the left and right lights are
> controlled by a single switch I need to figure out the right components and
> techniques for making a Y connection for the supply voltage lines. It seems
> all the "splice" connectors I find online are for joining two wires, not
> three. Can someone point me in the right direction?
> Thanks,
> Pat Little
>
Message 5
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| Subject: | Re: Y connections |
At 12:42 AM 8/9/2018, you wrote:
>I am starting to plan out the wiring for a Zenith STOL CH750 that is
>being built here in Missoula. I have a good working knowledge of
>electrical and electronic stuff, but am not familiar with how things
>are done in the aircraft world. The first part of the aircraft
>wiring I am thinking through is the wing tip strobe lights. Since
>both the left and right lights are controlled by a single switch I
>need to figure out the right components and techniques for making a
>Y connection for the supply voltage lines. It seems all the "splice"
>connectors I find online are for joining two wires, not three. Can
>someone point me in the right direction?
>Thanks,
>Pat Little
https://goo.gl/c85k64
https://goo.gl/FMCY9K
https://goo.gl/Lqhv2t
Any of the above techniques will do the job . . .
Bob . . .
Message 6
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| Subject: | Re: Y connections |
Thanks Bob. I like the first one, PIDG-style, and the practical example at
the bottom of that page looks like what I will be doing. I have to make an
inline splice with 3 #20 wires. Appreciate the quick helpful response.
Pat
On Thu, Aug 9, 2018 at 10:16 AM Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> At 12:42 AM 8/9/2018, you wrote:
>
> I am starting to plan out the wiring for a Zenith STOL CH750 that is being
> built here in Missoula. I have a good working knowledge of electrical and
> electronic stuff, but am not familiar with how things are done in the
> aircraft world. The first part of the aircraft wiring I am thinking through
> is the wing tip strobe lights. Since both the left and right lights are
> controlled by a single switch I need to figure out the right components and
> techniques for making a Y connection for the supply voltage lines. It seems
> all the "splice" connectors I find online are for joining two wires, not
> three. Can someone point me in the right direction?
> Thanks,
> Pat Little
>
>
> https://goo.gl/c85k64
>
> https://goo.gl/FMCY9K
>
> https://goo.gl/Lqhv2t
>
> Any of the above techniques will do the job . . .
>
>
> Bob . . .
>
Message 7
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hi bob,
i am trying to do ov protection on a viking 110. b and c would have the
ovm blow a breaker and cut off current to coil in a relay. i think i have
seen drawings of yours where a contactor is used betweeen alternator and
main bus . can you direct me to a drawing that is as simple as you say. any
current for relays/ contactors would have to come straight from the
alternator. worst case with the honda is that both batteries must be taken
off line, leaving the alternator to provide spark.
thanks, bob noffs
On Thu, Jul 12, 2018 at 7:49 AM, Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> At 05:45 AM 7/12/2018, you wrote:
>
> well, i guess i should wire in a crowbar. seems like it should be pretty
> straight forward to have it break the circuit to the field. i will take a
> look in bob's book for ideas and go from there.
>
>
> The crowbar ov protection module can be added to
> any system wherein alternator field power is
> taken through a typical 5A breaker. The
> module is wired from field supply line to
> ground at any point downstream of that
> breaker. You can find examples in the Z-figures.
>
>
> Bob . . .
>
Message 8
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| Subject: | Re: Y connections |
At 12:26 PM 8/9/2018, you wrote:
>Thanks Bob. I like the first one, PIDG-style, and the practical
>example at the bottom of that page looks like what I will be doing.
>I have to make an inline splice with 3 #20 wires. Appreciate the
>quick helpful response.
You'll need a blue pidg splice for that one.
They taught us how to do that when I worked at Boeing
back in '61 . . .
Bob . . .
Message 9
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| Subject: | Re: Y connections |
I salvaged about a 10 pound rat's nest of wire that was a very small
chunk of an airliner wiring harness. (There's an airliner recycler
fairly close to me.) Several ounces of that 10 pounds consisted of crimp
splices, fanning a single wire out to two, three, and more wires. Boy,
those airliner builders sure are careless, wasteful critters....
On 8/9/2018 9:10 AM, FLYaDIVE wrote:
> Pat:
>
> You DO NOT make a Y or a T connection. You run separate wires
> directly to the switch. OMG! All that extra wire? All that extra weight?
>
> Yes, that way the common failure point is the switch. And if a wire
> should fail you still have power to the opposite side. AND you are not
> doubling the current through a common wire.
>
> K.I.S.S. M.E.
>
>
> Barry
>
>
> On Thu, Aug 9, 2018 at 1:48 AM Pat Little <roughleg@gmail.com
> <mailto:roughleg@gmail.com>> wrote:
>
> I am starting to plan out the wiring for a Zenith STOL CH750 that
> is being built here in Missoula. I have a good working knowledge
> of electrical and electronic stuff, but am not familiar with how
> things are done in the aircraft world. The first part of the
> aircraft wiring I am thinking through is the wing tip strobe
> lights. Since both the left and right lights are controlled by a
> single switch I need to figure out the right components and
> techniques for making a Y connection for the supply voltage lines.
> It seems all the "splice" connectors I find online are for joining
> two wires, not three. Can someone point me in the right direction?
> Thanks,
> Pat Little
>
---
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Message 10
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I'm not (either) Bob, but...
I assume you're talking about an internally regulated alternator. If you
have a copy of the 'Connection, go to drawing z13/8, 'all electric plane
on a budget'. You can copy the circuit shown for the Dynamo (upper right
hand and top center of the page). Just erase the dynamo/regulator parts
and the filter capacitor, and tie what's labeled as a red wire at the
voltage regulator to the B lead of the alternator.
Charlie
On 8/9/2018 2:00 PM, bob noffs wrote:
> hi bob,
> i am trying to do ov protection on a viking 110. b and c would have
> the ovm blow a breaker and cut off current to coil in a relay. i think
> i have seen drawings of yours where a contactor is used betweeen
> alternator and main bus . can you direct me to a drawing that is as
> simple as you say. any current for relays/ contactors would have to
> come straight from the alternator. worst case with the honda is that
> both batteries must be taken off line, leaving the alternator to
> provide spark.
> thanks, bob noffs
>
> On Thu, Jul 12, 2018 at 7:49 AM, Robert L. Nuckolls, III
> <nuckolls.bob@aeroelectric.com <mailto:nuckolls.bob@aeroelectric.com>>
> wrote:
>
> At 05:45 AM 7/12/2018, you wrote:
>> well, i guess i should wire in a crowbar. seems like it should be
>> pretty straight forward to have it break the circuit to the
>> field. i will take a look in bob's book for ideas and go from there.
>
> The crowbar ov protection module can be added to
> any system wherein alternator field power is
> taken through a typical 5A breaker. The
> module is wired from field supply line to
> ground at any point downstream of that
> breaker. You can find examples in the Z-figures.
>
>
> Bob . . .
>
>
---
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Message 11
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Bob Noffs,
Here is a link to Bob's drawings:
http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/
It is OK to mix and match desired features from different drawings.
Z-19 and Z-24 might be useful for you.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=482252#482252
Message 12
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On 8/9/2018 7:08 PM, user9253 wrote:
>
> Bob Noffs,
> Here is a link to Bob's drawings:
> http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/
> It is OK to mix and match desired features from different drawings.
> Z-19 and Z-24 might be useful for you.
>
> --------
> Joe Gores
That will work if he has a dynamo with the B&C regulator, but that
drawing doesn't interrupt the B lead of a regular IR alternator. I don't
think he spec'd which alternator he's using.
Charlie
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Message 13
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Z-19 has dual batteries and a single alternator, which is what Bob plans for his
Viking. Z-24 has a contactor in series with the alternator "B" lead.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=482256#482256
Message 14
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Oops; my bad. I just opened the 1st doc in that list. Sorry 'bout that.
Charlie
On 8/9/2018 9:03 PM, user9253 wrote:
>
> Z-19 has dual batteries and a single alternator, which is what Bob plans for
his Viking. Z-24 has a contactor in series with the alternator "B" lead.
>
> --------
> Joe Gores
>
---
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