Today's Message Index:
----------------------
1. 12:02 AM - Stop (Matthew Freeman)
2. 01:36 AM - Re: Re: Z-12 Aux Alt Question (Werner Schneider)
3. 06:31 AM - Building Coax (Valovich, Paul)
4. 07:05 AM - What Capacitor Size? (James Meade)
5. 07:27 AM - Re: Building Coax (Ernest Christley)
6. 07:27 AM - Re: What Capacitor Size? (Ken Ryan)
7. 08:08 AM - Re: What Capacitor Size? (user9253)
8. 08:38 AM - Re: Building Coax (Robert L. Nuckolls, III)
9. 08:40 AM - Re: What Capacitor Size? (Robert L. Nuckolls, III)
10. 09:43 AM - Re: Building Coax (Bill Watson)
11. 10:36 AM - Re: Building Coax (Rick Beebe)
12. 10:57 AM - Re: Building Coax (Robert L. Nuckolls, III)
13. 11:03 AM - Re: Building Coax (Robert L. Nuckolls, III)
14. 11:20 AM - Re: Building Coax (Craig Schulze)
15. 11:24 AM - Unsubscribing (Robert L. Nuckolls, III)
16. 01:33 PM - Re: Funny photo (Efraim Otero)
Message 1
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Matt
> On Jan 10, 2019, at 2:42 PM, AeroElectric-List Digest Server <aeroelectric-list@matronics.com>
wrote:
>
> *
>
> =================================================
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> Total Messages Posted Wed 01/09/19: 2
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> Today's Message Index:
> ----------------------
>
> 1. 03:16 AM - Re: Z-12 Aux Alt Question (supik)
> 2. 10:54 AM - Re: Z-12 Aux Alt Question (BMC_Dave)
>
>
>
> ________________________________ Message 1 _____________________________________
>
>
> Time: 03:16:20 AM PST US
> Subject: AeroElectric-List: Re: Z-12 Aux Alt Question
> From: "supik" <bionicad@hotmail.com>
>
>
>
> ceengland7(at)gmail.com wrote:
>>> On 1/8/2019 5:20 PM, supik wrote:
>>>
>>>
>>>
>>> Personally if anything major goes wrong electrically and I am in IMC, I will
> look for a good enroute alternate airport with best wx in the area and land.
> Airmanship of course, if it's close to minimums below me and my original destination
> has way better wx, then continue.
>>>
>>> On the ground, I will have plenty of time to check the systems, perform repairs
> if possible, wait for better wx and make further decisions. If the degraded
> system allows for a safe VFR flight, one can continue home or to destination.
>>>
>>> --------
>>> Igor
>>>
>>> RV10 in progress
>>>
>>> As a FWIW, I tried to come as close as reasonably possible to
>>>
>>
>> 'conventional' operation: airframe power is on one switch (the master),
>> and the engine on another. Sustained smoke in the cockpit in
>> 'conventional' is master off NOW, & find the ground.
>> My (not-yet-flying) electrically dependent alt engine has all it needs
>> on its very own bus, controlled by its own switch.
>> Everything else is on the other (airframe) bus.
>> Dual identical alternators, one feeding each bus.
>> (Cross-tie switch to allow either bus to be powered by the other, in
>> case of control (switch or contactor) failure.)
>>
>> Response to sustained smoke would be 'airframe master off, hunt for
>> ground', with the EFIS kept alive by its internal battery.
>>
>> No claim that this is the best solution. Just that it at least
>> marginally mimics conventional operation and hopefully, will allow long
>> conditioned responses in a high stress situation.
>>
>> Charlie
>>
>> ---
>> This email has been checked for viruses by Avast antivirus software.
>> https://www.avast.com/antivirus
>
>
> Good approach!
>
> --------
> Igor
>
> RV10 in progress
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=486853#486853
>
>
> ________________________________ Message 2 _____________________________________
>
>
> Time: 10:54:32 AM PST US
> Subject: AeroElectric-List: Re: Z-12 Aux Alt Question
> From: "BMC_Dave" <bmcdave85@gmail.com>
>
>
>
> ceengland7(at)gmail.com wrote:
>>
>> 'conventional' operation: airframe power is on one switch (the master),
>> and the engine on another. Sustained smoke in the cockpit in
>> 'conventional' is master off NOW, & find the ground.
>> My (not-yet-flying) electrically dependent alt engine has all it needs
>> on its very own bus, controlled by its own switch.
>> Everything else is on the other (airframe) bus.
>> Dual identical alternators, one feeding each bus.
>> (Cross-tie switch to allow either bus to be powered by the other, in
>> case of control (switch or contactor) failure.)
>>
>> Response to sustained smoke would be 'airframe master off, hunt for
>> ground', with the EFIS kept alive by its internal battery.
>>
>> No claim that this is the best solution. Just that it at least
>> marginally mimics conventional operation and hopefully, will allow long
>> conditioned responses in a high stress situation.
>>
>> Charlie
>>
>> ---
>> This email has been checked for viruses by Avast antivirus software.
>> https://www.avast.com/antivirus
>
>
> I agree with the idea of emulating "conventional" operation.
>
> My originally posted architecture might be nearly there, if I move non-engine
stuff
> to the main bus.
>
> Smoke in cockpit, e-bus alt feed on, master off. Engine will run for 2+ hours
in
> that condition, and I can alternate between primary and backup EFISs for a nominal
> 2.5 hours of flight instrument time. Pitot heat reduces engine run time
> to a little over an hour.
>
> I don't have a lot of experience in hard IMC as I'm not instrument rated, but
it
> seems to me the scenario where I have a dual alternator failure and the pitot
> is icing up I'd be in an emergency and on my way to a landing. Still noodling
> if 1 hour is good enough for me here.
>
> Only thing is I would be isolated from the outside world then, so maybe leave
the
> 430 on the e-bus as well so I have a means to communicate but can still switch
> it off.
>
> Boy I'd sure love to just move a smaller aux alt to the e-bus...
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=486856#486856
>
>
>
>
>
>
>
>
Message 2
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| Subject: | Re: Z-12 Aux Alt Question |
Charlie,
not sure about the details, but would it not be prudent to have half of
your engine power on each bus (if the engine has supported dual
ignition/injection etc.), when you try to detect what is wrong you would
still have half of your electrical dependent engine power on when
shutting down one bus?
As if something on your engine bus goes wrong you have only the choice
to shut it down .
Just a thought.
Cheers Werner
On 09.01.2019 03:17, Charlie England wrote:
>
>>
> As a FWIW, I tried to come as close as reasonably possible to
> 'conventional' operation: airframe power is on one switch (the
> master), and the engine on another. Sustained smoke in the cockpit in
> 'conventional' is master off NOW, & find the ground.
> My (not-yet-flying) electrically dependent alt engine has all it needs
> on its very own bus, controlled by its own switch.
Message 3
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When building a coax cable can I use a male D-sub pin instead of the pin su
pplied in the connector bag?
Tried to crimp those pins with a D-sub crimper and it didn't go well. I now
have extra connectors with no pins.
Message 4
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| Subject: | What Capacitor Size? |
I am installing an auxiliary 40A external alternator (with internal
voltage regulator) on a Rotax 912ULS engine. How do I determine the right
specs on the capacitor?
The Rotax wiring diagram calls for a capacitor but there is no schematic
or other source of information on the capacitor specs that I can find.
(This question is not about the existing 22,000 uf capacitor on the Rotax
internal permanent magnet 18A generator.)
How do I determine the desired characteristics of a capacitor in this kind
of application?
Thanks
Message 5
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| Subject: | Re: Building Coax |
You could use a piece of clipped off a paperclip if you could get it to st
ick.=C2- The problem is reliability.
Those pins are designed to "click" inside the connector, or be seal with a
silicone o-ring.=C2- Until moisture seeps in, just leaving the center wir
e sticking out will work just as well as the crimped pin.=C2- Getting the
connector to go together without bending the center wire and destroying th
e connection . . let's say I've done it, but don't really want to do it aga
in.
I'm pretty sure you can get just the pins fairly cheap.
On Thursday, January 10, 2019, 9:32:33 AM EST, Valovich, Paul <pvalovic
h@dcscorp.com> wrote:
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When building a coax cable can I use a male D-sub pin instead of the pin su
pplied in the connector bag?
=C2-
Tried to crimp those pins with a D-sub crimper and it didn=99t go wel
l. I now have extra connectors with no pins.
Message 6
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| Subject: | Re: What Capacitor Size? |
You might want to ask the folks at rotax-owner.com forum. I think I read
there that the capacitor for the external alternator is a mistake and no
capacitor is required.
Sent from my Android. Sorry Steve.
On Thu, Jan 10, 2019, 10:21 James Meade <jnmeade@southslope.net wrote:
> jnmeade@southslope.net>
>
> I am installing an auxiliary 40A external alternator (with internal
> voltage regulator) on a Rotax 912ULS engine. How do I determine the
> right
> specs on the capacitor?
>
> The Rotax wiring diagram calls for a capacitor but there is no schematic
> or other source of information on the capacitor specs that I can find.
>
> (This question is not about the existing 22,000 uf capacitor on the Rotax
> internal permanent magnet 18A generator.)
>
> How do I determine the desired characteristics of a capacitor in this
> kind
> of application?
>
> Thanks
>
>
Message 7
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| Subject: | Re: What Capacitor Size? |
Any size capacitor will not do much good.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=486870#486870
Message 8
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| Subject: | Re: Building Coax |
At 08:30 AM 1/10/2019, you wrote:
>When building a coax cable can I use a male D-sub pin instead of the
>pin supplied in the connector bag?
>
>Tried to crimp those pins with a D-sub crimper and it didn't go
>well. I now have extra connectors with no pins.
the connectors are cheap.
https://tinyurl.com/yd4z7gta
throw the first one away and start over.
Bob . . .
Message 9
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| Subject: | Re: What Capacitor Size? |
At 08:57 AM 1/10/2019, you wrote:
><jnmeade@southslope.net>
>
>I am installing an auxiliary 40A external alternator (with internal
>voltage regulator) on a Rotax 912ULS engine. How do I determine the right
>specs on the capacitor?
>
>The Rotax wiring diagram calls for a capacitor but there is no schematic
>or other source of information on the capacitor specs that I can find.
>
>(This question is not about the existing 22,000 uf capacitor on the Rotax
>internal permanent magnet 18A generator.)
>
>How do I determine the desired characteristics of a capacitor in this kind
>of application?
I have discovered with bench testing that
the legacy capacitor installed on the
majority of alternators serves no
useful purpose. You can leave it
out if you wish.
Bob . . .
Message 10
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| Subject: | Re: Building Coax |
On 1/10/2019 9:30 AM, Valovich, Paul wrote:
>
> When building a coax cable can I use a male D-sub pin instead of the
> pin supplied in the connector bag?
>
> Tried to crimp those pins with a D-sub crimper and it didnt go well.
> I now have extra connectors with no pins.
>
I had a similar situation. I substituted a D-sub pin and it seems to
have worked well.
With that said, I'm ordering some extra pins for my remaining orphan
plugs per Bob's post.
Question: What is one supposed to crimp those pins with? The D-sub crimper?
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
Message 11
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| Subject: | Re: Building Coax |
There is, of course, a specialty crimper. The ratchet crimper I have has
small holes for crimping the pin and then a larger hole to crimp the
ferrule. Something like https://tinyurl.com/y7tv4jzl
--Rick
On 1/10/2019 12:42 PM, Bill Watson wrote:
> On 1/10/2019 9:30 AM, Valovich, Paul wrote:
>>
>> When building a coax cable can I use a male D-sub pin instead of the
>> pin supplied in the connector bag?
>>
>> Tried to crimp those pins with a D-sub crimper and it didnt go well.
>> I now have extra connectors with no pins.
>>
> I had a similar situation. I substituted a D-sub pin and it seems to
> have worked well.
>
> With that said, I'm ordering some extra pins for my remaining orphan
> plugs per Bob's post.
>
> Question: What is one supposed to crimp those pins with? The D-sub
> crimper?
>
Message 12
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| Subject: | Re: Building Coax |
At 11:42 AM 1/10/2019, you wrote:
>On 1/10/2019 9:30 AM, Valovich, Paul wrote:
>>When building a coax cable can I use a male D-sub pin instead of
>>the pin supplied in the connector bag?
>>
>>Tried to crimp those pins with a D-sub crimper and it didn't go
>>well. I now have extra connectors with no pins.
>
>I had a similar situation. I substituted a D-sub pin and it seems
>to have worked well.
>
>With that said, I'm ordering some extra pins for my remaining orphan
>plugs per Bob's post.
>
>Question: What is one supposed to crimp those pins with? The D-sub crimper?
The tool you crimped the hex-sleeve should
have a die for pins
Emacs!
See https://tinyurl.com/y7to3wnb
Bob . . .
Message 13
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| Subject: | Re: Building Coax |
>
>I had a similar situation. I substituted a D-sub pin and it seems
>to have worked well.
NOT A GOOD IDEA. The pin retaining mechanism
for these two technologies could not be more
different. Further, the d-sub pin o.d. is
0.040" while the BNC pin o.d. is 0.052"
NOT a good match.
Bob . . .
Message 14
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| Subject: | Re: Building Coax |
Hi Bob,
Could you remove me from the email notification portion of the list?
Thank you,
Craig Schulze
From: <owner-aeroelectric-list-server@matronics.com> on behalf of "Robert
L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Subject: Re: AeroElectric-List: Building Coax
>
> I had a similar situation. I substituted a D-sub pin and it seems to have
> worked well.
NOT A GOOD IDEA. The pin retaining mechanism
for these two technologies could not be more
different. Further, the d-sub pin o.d. is
0.040" while the BNC pin o.d. is 0.052"
NOT a good match.
Bob . . .
Message 15
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At 01:19 PM 1/10/2019, you wrote:
>Hi Bob,
>
>Could you remove me from the email notification portion of the list?
>
>Thank you,
>Craig Schulze
You do it yourself at the same page
you used to sign up . . .
GOTO: https://tinyurl.com/rp8st
Bob . . .
Message 16
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Wow, After reading and re reading Bob's book...This explains it... I=C2=B4l
have
to re wire and re weigh my biplane...Did look kinda "dirty"... one more
question... where can I get the bag? any tinyurl?? :)
El dom., 6 ene. 2019 a las 20:55, Ernest Christley (<echristley@att.net>)
escribi=C3=B3:
> Is that type of ground common?
>
> On Saturday, January 5, 2019, 7:24:24 PM EST, Art Zemon <art@zemon.name>
> wrote:
>
>
> -- Art Z.
>
> Sent from my phone. Please excuse brevity and bizarre typos.
>
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