Today's Message Index:
----------------------
1. 07:26 AM - Re: p-lead signal conditioning or tach gen usage (Eric M. Jones)
2. 12:13 PM - Re: wire size (James Robinson)
3. 03:46 PM - Re: wire size (Robert L. Nuckolls, III)
4. 04:41 PM - Re: wire size (James Robinson)
5. 05:03 PM - Re: wire size (Charlie England)
6. 06:10 PM - Re: wire size (James Robinson)
7. 06:43 PM - Failure Detection and Annunciation question (Allen Fulmer)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: p-lead signal conditioning or tach gen usage |
I wanted to repost a circuit that I built for an Aeroelectric lister for his problem
of interfacing two different tach generators with one tachometer. This is
a simple divide by two and signal conditioner that might prove useful in these,
or related efforts.
I have PCBs for this and can build up one for little money.
--------
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones@charter.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=271690#271690
Attachments:
http://forums.matronics.com//files/tacho_divider_141.jpg
http://forums.matronics.com//files/tachodividerschematic_108.jpg
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Hello Bob
I have a wire size question. I use your 2 bat 2 alt all electric configuation
for my Glasair. I use circuit breakers on a panel on the right side of the panel.
The problem is that the person that helped me wire the airplane ran #4 wire
from the firewall pass through and attached to the breaker panel. These are
very stiff ( not welding cable) and put stress on the connections to the breakers.
I would like to terminate the 2 #4 wires on the sidewall on 2 separate
studs and from each of these two studs run 2 #10 wire (about 6 to 10 inches)to
each end of the strap connecting the hot side of the breakers on each of the
two circuits. I hope this is clear. My question is; would 2 #10 wire be sufficient
to replace for a short run the #4 wires?
Jim
James Robinson
Glasair lll N79R
Spanish Fork UT U77
________________________________
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
At 02:09 PM 11/8/2009, you wrote:
>Hello Bob
>I have a wire size question. I use your 2 bat 2 alt all electric
>configuation for my Glasair. I use circuit breakers on a panel on
>the right side of the panel. The problem is that the person that
>helped me wire the airplane ran #4 wire from the firewall pass
>through and attached to the breaker panel. These are very stiff (
>not welding cable) and put stress on the connections to the
>breakers. I would like to terminate the 2 #4 wires on the sidewall
>on 2 separate studs and from each of these two studs run 2 #10 wire
>(about 6 to 10 inches)to each end of the strap connecting the hot
>side of the breakers on each of the two circuits. I hope this is
>clear. My question is; would 2 #10 wire be sufficient to replace
>for a short run the #4 wires?
I'd really rather you didn't have all this "hardware"
in the system. How about replacing the 4AWG tefzel with
a 6AWG welding cable which will be MUCH easier to work
with and entirely adequate for alternator outputs of
60A. I'm presuming that your alternator is no larger
than this. Alternatively, a single chunk of 4AWG welding
cable would be MUCH preferred.
Bob . . .
---------------------------------------
( It's MATRONICS FUND RAISER MONTH! )
( Do your part to keep this marvelous )
( tool sharp and available to all our )
( brothers in the OBAM aviation )
( community. )
---------------------------------------
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Hi Bob
Your solution is OK and doable. I just worry about the weight of the wire on the
copper tie strip on the breakers. I could figure a support for the much more
flexible wire.
I am running a pad mount 20 amp and a belt driven 40 amp alternators. Can you
make up the wires with ends if I provide the length and connector sizes?
Jim
James Robinson
Glasair lll N79R
Spanish Fork UT U77
________________________________
From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Sent: Sun, November 8, 2009 3:43:57 PM
Subject: Re: AeroElectric-List: wire size
At 02:09 PM 11/8/2009, you wrote:
> Hello Bob
> I have a wire size question. I use your 2 bat 2 alt all electric configuation
for my Glasair. I use circuit breakers on a panel on the right side of the
panel. The problem is that the person that helped me wire the airplane ran #4
wire from the firewall pass through and attached to the breaker panel. These
are very stiff ( not welding cable) and put stress on the connections to the
breakers. I would like to terminate the 2 #4 wires on the sidewall on 2 separate
studs and from each of these two studs run 2 #10 wire (about 6 to 10 inches)to
each end of the strap connecting the hot side of the breakers on each of
the two circuits. I hope this is clear. My question is; would 2 #10 wire be
sufficient to replace for a short run the #4 wires?
I'd really rather you didn't have all this "hardware"
in the system. How about replacing the 4AWG tefzel with
a 6AWG welding cable which will be MUCH easier to work
with and entirely adequate for alternator outputs of
60A. I'm presuming that your alternator is no larger
than this. Alternatively, a single chunk of 4AWG welding
cable would be MUCH preferred.
Bob . . .
---------------------------------------
( It's MATRONICS FUND RAISER MONTH! )
( Do your part to keep this marvelous )
( tool sharp and available to all our )
( brothers in the OBAM aviation )
( community. )
---------------------------------------
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
If you walk into your local welding supply shop & tell 'em you need x
feet of #6 and y crimp-on lugs for the wire with z stud size, then ask
if they know anyone who might rent you a crimper, odds are good that
someone at the counter will go get a crimper out of stock & do it for
you on the spot.
Charlie
James Robinson wrote:
> Hi Bob
> Your solution is OK and doable. I just worry about the weight of the
> wire on the copper tie strip on the breakers. I could figure a
> support for the much more flexible wire.
> I am running a pad mount 20 amp and a belt driven 40 amp alternators.
> Can you make up the wires with ends if I provide the length and
> connector sizes?
> Jim
> James Robinson
> Glasair lll N79R
> Spanish Fork UT U77
>
>
> ------------------------------------------------------------------------
> *From:* "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
> *To:* aeroelectric-list@matronics.com
> *Sent:* Sun, November 8, 2009 3:43:57 PM
> *Subject:* Re: AeroElectric-List: wire size
>
> <nuckolls.bob@aeroelectric.com <mailto:nuckolls.bob@aeroelectric.com>>
>
> At 02:09 PM 11/8/2009, you wrote:
> > Hello Bob
> > I have a wire size question. I use your 2 bat 2 alt all electric
> configuation for my Glasair. I use circuit breakers on a panel on the
> right side of the panel. The problem is that the person that helped
> me wire the airplane ran #4 wire from the firewall pass through and
> attached to the breaker panel. These are very stiff ( not welding
> cable) and put stress on the connections to the breakers. I would
> like to terminate the 2 #4 wires on the sidewall on 2 separate studs
> and from each of these two studs run 2 #10 wire (about 6 to 10
> inches)to each end of the strap connecting the hot side of the
> breakers on each of the two circuits. I hope this is clear. My
> question is; would 2 #10 wire be sufficient to replace for a short run
> the #4 wires?
>
> I'd really rather you didn't have all this "hardware"
> in the system. How about replacing the 4AWG tefzel with
> a 6AWG welding cable which will be MUCH easier to work
> with and entirely adequate for alternator outputs of
> 60A. I'm presuming that your alternator is no larger
> than this. Alternatively, a single chunk of 4AWG welding
> cable would be MUCH preferred.
>
>
> Bob . . .
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Thanks Charlie
I have a welding shop around the corner. I'll check with them.
Jim
James Robinson
Glasair lll N79R
Spanish Fork UT U77
________________________________
From: Charlie England <ceengland@bellsouth.net>
Sent: Sun, November 8, 2009 4:50:56 PM
Subject: Re: AeroElectric-List: wire size
If you walk into your local welding supply shop & tell 'em you need x feet of #6
and y crimp-on lugs for the wire with z stud size, then ask if they know anyone
who might rent you a crimper, odds are good that someone at the counter will
go get a crimper out of stock & do it for you on the spot.
Charlie
James Robinson wrote:
> Hi Bob
> Your solution is OK and doable. I just worry about the weight of the wire on
the copper tie strip on the breakers. I could figure a support for the much
more flexible wire.
> I am running a pad mount 20 amp and a belt driven 40 amp alternators. Can you
make up the wires with ends if I provide the length and connector sizes?
> Jim
> James Robinson
> Glasair lll N79R
> Spanish Fork UT U77
>
>
> ------------------------------------------------------------------------
> *From:* "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
> *To:* aeroelectric-list@matronics.com
> *Sent:* Sun, November 8, 2009 3:43:57 PM
> *Subject:* Re: AeroElectric-List: wire size
>
>
> At 02:09 PM 11/8/2009, you wrote:
> > Hello Bob
> > I have a wire size question. I use your 2 bat 2 alt all electric configuation
for my Glasair. I use circuit breakers on a panel on the right side of the
panel. The problem is that the person that helped me wire the airplane ran
#4 wire from the firewall pass through and attached to the breaker panel. These
are very stiff ( not welding cable) and put stress on the connections to the
breakers. I would like to terminate the 2 #4 wires on the sidewall on 2 separate
studs and from each of these two studs run 2 #10 wire (about 6 to 10 inches)to
each end of the strap connecting the hot side of the breakers on each of
the two circuits. I hope this is clear. My question is; would 2 #10 wire be
sufficient to replace for a short run the #4 wires?
>
> I'd really rather you didn't have all this "hardware"
> in the system. How about replacing the 4AWG tefzel with
> a 6AWG welding cable which will be MUCH easier to work
> with and entirely adequate for alternator outputs of
> 60A. I'm presuming that your alternator is no larger
> than this. Alternatively, a single chunk of 4AWG welding
> cable would be MUCH preferred.
>
>
> Bob . . .
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Failure Detection and Annunciation question |
Bob,
Was reviewing your article:
http://www.aeroelectric.com/articles/Failure_Detection_and_Annunciation.pdf
I want to annunciate the failure of a 12v scavenge pump to draw current.
You mention such a circuit being used on a heated pitot but I was wondering
if it mattered if the load was a pump motor? Full load would be
approximately 5 amps and it needs to be running whenever the engine is
running. I figured the LED would come on whenever I put power to the ECU
and Ignition and would quickly go out if the scavenge pump was pulling power
as it should. Thus, even if I "forgot" to flip the switch for the scavenge
pump, the LED would illuminate until I did AND the pump was pulling power.
Any problem with a motor as opposed to a resistance load? Any other things
I should consider?
Thanks.
Allen Fulmer
RV7 Eggenfellner Turbo normalized 6 cyl.
Finishing up the wiring
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|