Today's Message Index:
----------------------
1. 02:03 AM - Re: alternator autopsy (Kingsley Hurst)
2. 07:24 AM - Re: Barry (Speedy11@aol.com)
3. 07:32 AM - Re: Kingsley, can u spel? (Speedy11@aol.com)
4. 07:44 AM - Another Banning? (Speedy11@aol.com)
5. 08:45 AM - Re: Another Banning? (Chuck Jensen)
6. 05:46 PM - Re: Another Banning? (Robert L. Nuckolls, III)
7. 08:31 PM - CHT/EGT instrument wire? (Robert L. Nuckolls, III)
8. 10:16 PM - Re: explosion proof fans - intrinsically safe vs explosion proof (user01)
9. 10:27 PM - New e-mail list: Mgl Avionics Stratomaster Users Group (Craig Payne)
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: | alternator autopsy |
--> AeroElectric-List message posted by: "Kingsley Hurst" <khurst@taroom.qld.gov.au>
> P.S. You can put another 'I' and 'S' in narcissistic if you wish.
> Can you spell N-A-R-C-I-S-S-T-I-C? One word can explain many things.
Well I admit I couldn't spell it but I can now.
Another word for my very limited vocab thanks Chuck.
Regs
Kingsley
Do Not Archive
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 |
|
Barry,
A Hyundai? I'm embarrassed for you.
Stan
Do not archive
> I have a Hyundai, I spent two months swapping alternators, bench
checking
alternators and even replaced the battery (Didn't I tell fellow that
replacing
the battery won't help!) ALL to no avail.
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 |
|
| Subject: | Re: Kingsley, can u spel? |
Ha. Funny! I love the humor.
Kingsley may be able to spell it, but Chuck is struggling.
Stan
Do not archive
narcistic, adjective
=94Synonyms 1. self-centeredness, smugness, egocentrism.
Kingsley,
Can you spell N-A-R-C-I-S-S-T-I-C? One word can explain many things.
Chuck Jensen
Do Not Archive
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 |
|
| Subject: | Another Banning? |
Uh oh! Sounds like the threat of yet another banning! You have to be
politically correct and a nice little boy to play here.
Who is next?
Stan Sutterfield
Do not archive
Barry,
In keeping with the philosophy offered by what appears to
be your adopted mentor (Yamashiada - for whom I cannot find
a single reference on the 'net) I will suggest that you've
been SHOWN how folks conduct themselves when sharing knowledge
and understanding here on the List. I will now take the
CORRECTIVE step of bringing it to your attention. Whether
or not we come to the last step is entirely up to you sir.
Be a gentleman or be gone.
Bob . . .
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 |
|
| Subject: | Another Banning? |
Stan,
Narcistic, narcissistic, potato, potatoe....they all work. My read was
Bob wasn't threatening to ban, just disinvite, though Paul, George,
FlyaDive, et al are probably not hesitant to attended parties that we
aren't necessarily invited to, so I doubt that they will 'fly away'
permanently, but perhaps their flight path may be altered to a slightly
higher plane--if only temporarily.
So, Stan, if you have anyone else to tweak...keep 'em coming. :-)
Chuck Jensen
Do Not Archive
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Speedy11@aol.com
Sent: Wednesday, October 25, 2006 10:43 AM
Subject: AeroElectric-List: Another Banning?
Uh oh! Sounds like the threat of yet another banning! You have to be
politically correct and a nice little boy to play here.
Who is next?
Stan Sutterfield
Do not archive
Barry,
In keeping with the philosophy offered by what appears to
be your adopted mentor (Yamashiada - for whom I cannot find
a single reference on the 'net) I will suggest that you've
been SHOWN how folks conduct themselves when sharing
knowledge
and understanding here on the List. I will now take the
CORRECTIVE step of bringing it to your attention. Whether
or not we come to the last step is entirely up to you sir.
Be a gentleman or be gone.
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 |
|
| Subject: | Re: Another Banning? |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 10:43 AM 10/25/2006 -0400, you wrote:
>Uh oh! Sounds like the threat of yet another banning! You have to be
>politically correct and a nice little boy to play here.
>Who is next?
>Stan Sutterfield
How would you have it any different?
Do you identify and/or agree with Barry's
assessment of the membership's
technical acumen? If you believe Barry's
assessment to be accurate, then why are
you hanging around here?
If you enjoy being the target of such
outpourings, may I suggest there are plenty
of groups on Usenet when one may indulge
in such flame-wars to their heart's content.
If you're here to help us figure out how to
improve on the best we know how to do, would
you not agree that Barry's recent
contributions are outside the scope and
gentlemanly demeanor that characterizes the
Matronics Lists? This isn't up to me Stan.
It was this way before I got here and hopefully
the way it will continue to be after I'm gone.
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: | CHT/EGT instrument wire? |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
>These cables bring the EGT/CHT signals to the Dynon FlightDEK D-180 from two
>terminal blocks(ring terminals used at blocks) and I also have the manual. A
>Rocky Mt. MicroMonitor was originally used to monitor engine functions.
>
>About the cable used I suspect it was some overkill. The original builder
>was an Electrical Engineer and was very meticulous about everything.
>
>I was looking for this type cable so that I could simply replace his
>original installation but with more length...thought I could do that more
>easily.
>If there is a better way....what would you suggest?
------------------
Okay, I checked the wiring diagram for the FlightDEK_D-180 at:
http://tinyurl.com/y69fr6
. . . where on page 2-6 we see a clear intention
on the part of Dynon that wires from the various EGT/CHT thermocouples
be run as contiguous thermocouple wire from the engine all the way to
the 25-Pin EMS connector on the rear of the panel mounted unit. This
is the right way to treat thermocouple wires. As a review, I'll
recommend you get a copy of:
http://www.aeroelectric.com/articles/excerpt.pdf
You can order thermocouple wire that matches the engine sensors
(type J and type K wire) from
http://www.ethermocouple.com/ppt/ppttc_XC_J_TC_WIRE.asp
and
http://www.ethermocouple.com/ppt/ppttc_XC_K_TC_WIRE.asp
There's a "part number builder" feature on each of these
pages. May I recommend the TT-J-20S and TT-K-20S wires
as the easiest to use. You can order 25' lengths of these
wires for about $1.00/ft.
Also, consider using machined male D-sub pins like the S604P
devices shown at:
http://www.aeroelectric.com/Pictures/Connectors/s604.jpg
http://www.aeroelectric.com/Pictures/Connectors/RCT-3_Male.jpg
and applied with a low cost tool like
http://www.aeroelectric.com/Pictures/Tools/Crimp_Tools/rct-3.jpg
Pins and tools available from either Steinair at:
http://steinair.com/
or B&C at
http://bandc.biz
Using the multi-conductor copper cables to extend your
engine thermocouples from a terminal block is a good way
to introduce considerable temperature measurement error
into the instrument's readings.
Bob . . .
---------------------------------------------------------
< What is so wonderful about scientific truth...is that >
< the authority which determines whether there can be >
< debate or not does not reside in some fraternity of >
< scientists; nor is it divine. The authority rests >
< with experiment. >
< --Lawrence M. Krauss >
---------------------------------------------------------
Message 8
| 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: | Re: explosion proof fans - intrinsically safe vs |
explosion proof
--> AeroElectric-List message posted by: user01 <nightware@sasktel.net>
Doug, I basically agree with your statement about ratings for equipment in
the hazardous area, but I would go on a bit further.
Please excuse me for being picky about the definitions.
There are two ways to do electrical things in hazardous areas -
intrinsically safe (I.S.), and explosion-proof.
Both attempt to avoid igniting the hazardous atmosphere around the device.
I.S. systems limit available energy in the system (total connected
capacitance, allowed voltage, non-incendive barriers etc) and I've used IS
with instrumentation - switches, transmitters, communication networks, etc.
There are many constraints here, including barriers in the non-hazardous
area, and segregation of wiring; if I was instrumenting an industrial paint
booth with pressure, airflow, temperature and other instrumentation, I would
consider IS equipment. As far as I know, there are no IS motors
commercially available. A single device wouldn't be IS by itself, but
would have to be part of a designe IS system.
Explosion-proof equipment allows for higher energy levels (both voltage and
current) and prevents ignition by using seals or wide machined flanges on
doors and housings to allow for cooling of the flame front before it exits
the enclosure. The enclosures are usually built quite heavy, as they may
have an ignition internally to survive, without allowing the flame front to
ignite the surrounding environment.
To select motors for use in a hazardous location, I look for TEXP (totally
enclosed, explosion proof). In a fan application, air friction may be
generating static electricity on the fan blades and the ducting material.
When I was initially looking for a rated fan, I found words like
"non-igniting fan and housing" along with spectacular price tags.
I believe that you are partially correct regarding placement of the fan on
the supply side of the booth. This placement could reduce the hazard if:
1. you do not dead-head the fan (any in-line filters always allow
significant flow), which would allow booth contents to migrate to the fan.
2. you never have the fan stop while the hazard is present. If it
stops, you shouldn't restart it, because the motor can be considered to be
in the hazardous area once the flow stops.
Mitigation of the risk may be possible by using long supply ducting, and
your suggestion about using the fan on the supply side - this is a question
for an insurance inspector; I don't know, myself. The fan would have to be
up-sized a bit to address the additional pressure drop from the longer
ductwork. In an industrial plant, I wouldn't use a fan that wasn't rated
(fan, motor, and ductwork) for the specific hazardous area, and my
experience is that the engineer would be pretty clear about checking that.
There would also almost certainly be explosion doors and anti-backdraft
dampers in the ducting system as well.
Another method is to use a belt or chain driven fan, with the motor outside
the duct in the non-hazardous environment. I think I saw that in a Sam
James painting video, but I may be remembering incorrectly. If using a belt
drive, I would pay some extra attention to safety grounding to avoid static
and sparks.
I think that your comment on inlet and outlet placement was good. I went
with a full height inlet (three furnace filters high on the door) and a
floor-level exhaust, and an approximately 8x8 ft temporary booth. I am
still looking for a reasonably priced TEXP motor.
For further information on IS equipment, there are good references on a
number of system vendor websites. Here are a couple:
http://www.omega.com/techref/intrinsic.html
http://www.setra.com/tra/app/app_exp.htm
The second reference has brief discussion of IS vs explosion-proof.
My comments do not constitute advocacy or approval of a particular design.
I strongly suggest that anyone considering their own hazardous area
electrical design should seek the opinion of a professional engineer
licenced to practice in their area, and consider whether your insurance
would cover your loss in the event of an incident and related claim.
Howard McKay
RV8A, empennage
Saskatoon, Canada
----- Original Message -----
From: "Doug Windhorn" <N1DeltaWhiskey@comcast.net>
Sent: Tuesday, October 24, 2006 4:12 PM
Subject: Re: AeroElectric-List: explosion proof fans
> --> AeroElectric-List message posted by: "Doug Windhorn"
> <N1DeltaWhiskey@comcast.net>
>
> Tom,
>
> Have you considered taking the fan out of the equation?
>
> I wouldn't consider an electrical device to be safe in a volatiles laden
> atmosphere unless it is UL Listed or FM Approved as "intrinsically safe"
> in accordance with the National Electrical Code. As already related,
> paint booth explosions do occur - the company I work for (or its insuring
> predecessors) probably paid a few buck on that IH explosion.
>
> Volatiles have what are known as Upper and Lower Explosive Limits (UEL,
> LEL) when mixed with air. Explosions will only occur when the volatiles
> content is within those ranges with the severest explosions occurring at
> the right stoichiometric ratio. Determining whether you will get into
> these ranges or not is a rather complicated analysis based on knowing the
> number of room air changes per minute, and the rate of release of the
> volatiles into the room environment, the latter being more difficult to
> determine. The more common method of doing this is taking empirical
> measurements with a volatiles detector. Obviously, all of this can become
> moot if there is no ignition source present. Static potential from the
> plastic or other sources will be reduced with higher humidity, do don't
> spray on a cold dry day.
>
> Consider also, that most volatiles are heavier than air, so where you
> place your air supply and exhaust is just, if not more, relevant than what
> you are using to move fresh air through the system.
>
> To take the fan out of the equation, consider using it to push air into
> the booth rather than to exhaust it out. Install an air plenum on top of
> your booth into which your fan blows. Provide large openings (to slow the
> air movement) between the plenum and the booth with filters to remove dust
> that might be drawn in. Exhaust the air from floor level.
>
> Regards,
>
> Doug Windhorn
>
>
> ----- Original Message -----
> From: "sarg314" <sarg314@comcast.net>
> To: <aeroelectric-list@matronics.com>
> Sent: Sunday, 22 October, 2006 12:49
> Subject: AeroElectric-List: explosion proof fans
>
>
>> --> AeroElectric-List message posted by: sarg314 <sarg314@comcast.net>
>>
>> An exhaust fan on a home made paint booth has the potential to spark an
>> explosion if you get the right mixture range of a flammable solvent in
>> the air and some sparks.
>> However, virtually all consumer fans use brushless AC motors (don't
>> they?). And, with the fan mounted right on the motor shaft, there's no
>> belt to generate static (though I guess there are other ways to generate
>> static). So, is such a fan suitable to use to exhaust a paint booth?
>>
>> Also, Does any one have any idea of what fan capacity is needed for an
>> RV-sized paint booth?
>>
>> --
>> Tom S., RV-6A
>>
>>
>>
>>
>
>
>
Message 9
| 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: | New e-mail list: Mgl Avionics Stratomaster Users Group |
--> AeroElectric-List message posted by: "Craig Payne" <craig@craigandjean.com>
I've just received my new "Enigma" EFIS/EMS and am interested in exchanging
information with other owners of products from MGL Avionics "Stratomaster"
line. So I've started a group on Yahoo. The information on the list is
below.
This is a user-to-user list and I have NO official affiliation with MGL. You
can read about their product line here:
www.mglavionics.co.za
See you on the list!
-- Craig Payne
Here're the details on stratomaster_users_group:
Group home page: http://groups.yahoo.com/group/stratomaster_users_group
Group email address: stratomaster_users_group@yahoogroups.com
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! --
|