Today's Message Index:
----------------------
1. 10:34 AM - What to put on the E-Bus? (Ross Home)
2. 10:54 AM - D-Sub connector grease (Ken Ryan)
3. 11:14 AM - Re: D-Sub connector grease (ARGOLDMAN@aol.com)
4. 11:17 AM - Re: D-Sub connector grease (Neal George)
5. 11:19 AM - Re: D-Sub connector grease (ARGOLDMAN@aol.com)
6. 12:20 PM - Re: What to put on the E-Bus? (Kent or Jackie Ashton)
7. 01:59 PM - Re: What to put on the E-Bus? (B Tomm)
Message 1
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| Subject: | What to put on the E-Bus? |
I have been discussing this issue with some other builders off list and
decided to ask this esteem group. What do I put on my E-Bus?
I have a 40AMP B&C Alternator and a SD-8 backup basically wired as per
Z-8/13 with an E-Bus relay between the battery bus and E-Bus.
One option is to put everything you might need for safe flight and landing
on the E-Bus (such as landing lights and strobes) and only turn on what is
needed depending on the stage of flight (keeping the continuous load less
than the 8 amps being put out by the SD-8).
The other is to just put on what is "essential" and then rely on being able
to flip the master switch to power the main to get at those "non-essential"
things that would be nice to have say for a night landing. The problem with
this is without an alternate feed from the E-Bus to the main bus, if the
battery contactor fails, all the items on the main bus are unavailable.
This was one of the reasons I was looking to install a cross feed between
the E-Bus and main bus but haven't installed such.
Right now, I am defining the minimum essentials as:
Electronic ignition
Advanced Flight System 5600 EFIS with GPS and AHARS
SL-30 Nav/Com
GRT Engine Monitoring
SL-70 Transponder
Dynon D-10 (for the blind encoder function)
My next level would be
Flaps
Nav Lights
Strobes
Landing Lights
Pitot Heat
The next level
GX-60 GPS/Com
M-200 CDI
Annunciator Control Unit
Last Level
TruTrak Sorcerer Autopilot
MX-20 Multi-Functional Display
Sl-15 Intercom/CD
Clock
Elevator Trim
Aileron Trim
Fuel Pump
Starter
Angle of Attack Indicator
Defrost Fan
Opinions are welcome.
Ross Mickey
N9PT
RV-6A
Message 2
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| Subject: | D-Sub connector grease |
Is there a recommended grease or other compound to use on D-Sub connectors
to offer some protection from moisture?
Message 3
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| Subject: | Re: D-Sub connector grease |
just google anti-oxidation grease you will see many there.
I use a product called, I believe Oxy-ban, however I don't know if it is
still available. I got mine from a friend EE, now diseased. I don't know if
there is really any difference between the various brands.
Your Sub-ds should be gold contacted. Use the material sparingly as
excess will attract dust etc. I use this goo on all of my contacts. I have
several non-gold contact connectors (Molex) for which I think this stuff is a
must to prevent corrosion and future problems.
Rich
In a message dated 6/16/2015 12:55:34 P.M. Central Daylight Time,
keninalaska@gmail.com writes:
Is there a recommended grease or other compound to use on D-Sub connectors
to offer some protection from moisture?
Message 4
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| Subject: | Re: D-Sub connector grease |
Dow Corning #4 Dielectric Grease.
Permatex has their own version...
Neal George
Sent from my iPhone
On Jun 16, 2015, at 12:57 PM, Ken Ryan <keninalaska@gmail.com<mailto:kenina
laska@gmail.com>> wrote:
Is there a recommended grease or other compound to use on D-Sub connectors
to offer some protection from moisture?
Message 5
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| Subject: | Re: D-Sub connector grease |
HOWEVER looking further, I found that there are both conductive and
dielectric compounds. I would suggest against the conductive type in the sub-ds
because of the possibility of shorting out closely spaced contacts. The
molex ones, however-- perhaps not. I am sticking with the non-conductive
dielectric type, however for safety.
Rich (again)
In a message dated 6/16/2015 12:55:34 P.M. Central Daylight Time,
keninalaska@gmail.com writes:
Is there a recommended grease or other compound to use on D-Sub connectors
to offer some protection from moisture?
Message 6
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| Subject: | Re: What to put on the E-Bus? |
I think you are overloading your E-bus. Lets say you lose your alternator and
b/u alternator at night in IMC. It might take 30 minutes or more to get down from
altitude, find an airport and land. What do you need to power while doing
that?
one mag or one electronic ignition already hot-wired to the battery with its own
switch
a com radio (so you can declare an emergency)
cockpit flood lighting
minimum flight instruments
intercom
perhaps Id put the transponder and GPS on the E-bus but keep them on only if necessary.
Maybe your battery is strong and can power more stuff for a longer time but what
if it wasnt fully charged? For me, I only put the things on the E-bus that
I must have to land. I dont need a transponder, engine monitor, strobes, landing
lights, or flap motor. I would not want to risk turning on a landing light
close in and have the e-bus items go black.
-Kent
Cozy IV N13AM
> On Jun 16, 2015, at 1:33 PM, Ross Home <rossmickey@comcast.net> wrote:
>
>
> I have been discussing this issue with some other builders off list and
> decided to ask this esteem group. What do I put on my E-Bus?
Message 7
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| Subject: | What to put on the E-Bus? |
I consider the E-Bus as an Essential Bus. It's purpose is do allow bare
minimum equipment to run when turning off the main contactor (which also
takes electrical power) to CONSERVE your battery while you CONTINUE to
destination or a nearby airport when you have a failed alternator. Once you
are near the airport, you may turn on your main contactor allowing all such
things for landing.
Heavy loads such as landing lights, pitot heat, will max out your SD-8 all
by themselves.
I have the following on my E-Bus
One Nav/comm radio
One EFIS
One cabin/panel light (LED)
Engine monitor
Auto-pilot
With everything on, the steady state electrical load is less than the output
capacity of the SD-8, thereby saving the battery for end of flight.
Bevan
RV7A
40 amp Main Alt
8 amp backup alt
Garmin 396 has it's own internal backup battery
Dual P-mags powered from the main bus and they have their own internal
generators fro primary power once running.
I may add internal battery backup to EFIS in the future if needed.
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Ross Home
Sent: Tuesday, June 16, 2015 10:33 AM
Subject: AeroElectric-List: What to put on the E-Bus?
--> <rossmickey@comcast.net>
I have been discussing this issue with some other builders off list and
decided to ask this esteem group. What do I put on my E-Bus?
I have a 40AMP B&C Alternator and a SD-8 backup basically wired as per
Z-8/13 with an E-Bus relay between the battery bus and E-Bus.
One option is to put everything you might need for safe flight and landing
on the E-Bus (such as landing lights and strobes) and only turn on what is
needed depending on the stage of flight (keeping the continuous load less
than the 8 amps being put out by the SD-8).
The other is to just put on what is "essential" and then rely on being able
to flip the master switch to power the main to get at those "non-essential"
things that would be nice to have say for a night landing. The problem with
this is without an alternate feed from the E-Bus to the main bus, if the
battery contactor fails, all the items on the main bus are unavailable.
This was one of the reasons I was looking to install a cross feed between
the E-Bus and main bus but haven't installed such.
Right now, I am defining the minimum essentials as:
Electronic ignition
Advanced Flight System 5600 EFIS with GPS and AHARS SL-30 Nav/Com GRT Engine
Monitoring SL-70 Transponder Dynon D-10 (for the blind encoder function)
My next level would be
Flaps
Nav Lights
Strobes
Landing Lights
Pitot Heat
The next level
GX-60 GPS/Com
M-200 CDI
Annunciator Control Unit
Last Level
TruTrak Sorcerer Autopilot
MX-20 Multi-Functional Display
Sl-15 Intercom/CD
Clock
Elevator Trim
Aileron Trim
Fuel Pump
Starter
Angle of Attack Indicator
Defrost Fan
Opinions are welcome.
Ross Mickey
N9PT
RV-6A
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