Today's Message Index:
----------------------
1. 06:29 AM - Current requirements for several common parts (Hi There)
2. 09:44 AM - small high cca batteries (klehman@albedo.net)
3. 09:50 AM - RV in Living Room - was Stick Switch Overrides (PeterHunt1@aol.com)
4. 03:25 PM - SL30/SL40 transmit/receive lockout? (Troy Scott)
5. 03:27 PM - ICOM A200 (Troy Scott)
6. 04:14 PM - Instrument adaptating queations .... (Jim Sower)
7. 06:03 PM - ground block (Jim Stone)
Message 1
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| Subject: | Current requirements for several common parts |
--> AeroElectric-List message posted by: Hi There <rv90619@yahoo.com>
I've started wiring my plane this weekend. I've got most of it all sorted it out
as far as wire sizes go, except there are a few things I can't find any info
of, although all the diagrams I find have a wire size for them. Those items
are:
Starter relay
Master relay
Van's boost fuel pump
Fuel primer relay
Hobbs meter
Thanks
Cam
Message 2
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| Subject: | small high cca batteries |
--> AeroElectric-List message posted by: klehman@albedo.net
Hi
I would like to use two batteries with my two alternators on my efi
Subaru. For weight saving and the ability to rotate them, I am willing
to try the $80. Ultra-start red batteries by Advanced Technology
Products. 4.4 lbs ea., 5 AH, 250 peak amps. However their web site
www.startstick.com has been closed/under construction for a long time
which makes me wonder if these batteries will be available in the
future. I thought there would be a market for such a battery for small
engine starting but perhaps not.
Are they the only source of such a battery? I have not been able to find
any other sources but perhaps I'm looking in the wrong places. Certainly
5AH and similar batteries are available with low discharge rates but I
haven't found any other high current units below about 12AH and 12 lbs.
Batteries with faston connectors are obviously unsuitable.
Comments from anyone who has experience with these batteries or ATP
would be appreciated.
thanks
Ken
Message 3
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| Subject: | RV in Living Room - was Stick Switch Overrides |
--> AeroElectric-List message posted by: PeterHunt1@aol.com
Hi Bob:
Yes, my RV is still in the living room. Trial fitted the wings over
Christmas which required sliding the tail into the dining room and installing the
wings through the front door. What an adventure. I am working on the engine
installation and expect to move everything to the airport for final assembly in
late summer. Thanks for asking.
I am now EAA Chapter 282 President and Bob Gibson and I will be making a
presentation on "All Electric Panels" at our April meeting. Your disciples are
carrying on well. Thank you and the others on this list for your continued help
and support.
Pete Hunt
Clearwater, FL
RV-6
Message 4
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| Subject: | SL30/SL40 transmit/receive lockout? |
--> AeroElectric-List message posted by: "Troy Scott" <tscott1217@bellsouth.net>
Gentlemen,
I'm about to install an Apollo SL30 nav-com and an Apollo SL40 com into the
same panel using no audio panel. The plan is to use Bob's AeroElectric
Audio Isolation Amplifier and a transmit selector switch labeled Transmit
SL30 / Transmit SL40. I can't find anything in the installation manuals
about a transmit/receive lockout feature to shut off the receiver in one
while the other is transmitting. I'm concerned about this because I read in
the instruction manual for a radio of a different brand (ICOM A200) that
when using two in the same airplane (even with separate antennas) this
transmit/receive interconnect must be accomplished in order to avoid damage
to the receiver sections of the radios. Shed some light here, please!
I spoke with a fellow at GarminAT tech support. He said he knew of no such
feature in these units. Even after I stressed that my concern is for the
receiver sections of the units, he indicated that the problem being
addressed in the ICOM A200 manual is probably related to possible audio
feedback and that audio feedback can somehow expose the OTHER radio's
receiver section to damage?!?!???. However, I'm still confused and
unconvinced. How can AUDIO isolation of the two units protect the RECEIVER
section of one radio from the radiated energy from the other radio's
transmitter?
Regards,
Troy Scott
tscott1217@bellsouth.net
Message 5
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--> AeroElectric-List message posted by: "Troy Scott" <tscott1217@bellsouth.net>
Bob,
If you've seen the instruction "manual" (really a foldout that is the
equivalent of 8 pages) you've seen everything I've seen. That's all that
came with the unit, new from AS&S Co.. I suspect the setup is like the
older KX97 (96?) Bendix King com, because, if I'm not mistaken, it's a
"slide-in replacement". At any rate, for several reasons, I'm planning to
return the unit to AS&S. I'll replace it with an SL40. I bought the A200
because it is over $500 cheaper than the SL40, but it doesn't look so great
stacked with my SL30 and SL70. It's also heavier that the SL30, even
thought the A200 is just a com and the SL30 is a nav-com. And I like the
D-sub connectors on the SL units better that the connectors on the A200.
Also, the Apollo units are rated for input voltage of 10 to 40 volts. In
the unlikely event of a voltage surge, they seem more likely to survive than
the A200, which lists input voltage of 13.8V +or- 15%.
Thanks for your attention!
Regards,
Troy Scott
tscott1217@bellsouth.net
Message 6
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| Subject: | Instrument adaptating queations .... |
--> AeroElectric-List message posted by: Jim Sower <canarder@frontiernet.net>
Boys and girls,
I have a situation with my Velocity that I need some help on. I have 6
Cyberdyne 2-1/8 instruments (oil press, temp, outside temp, L, R fuel qty,
volts, etc.) with 5/8 LED readout and would like to add a couple and change a
couple. However, what I want to do is a little out of my electronically
challenged depth.
I have generic float type fuel quantity senders that are abysmally
inaccurate. I want to change them to capacitive unites so popular these days,
but I dont know if the display mechanism is compatible with the senders.
When I call the capacitive fuel sender folks and ask about this, I anticipate
they will want to no some engineering specs on the display. I need to know
what kinds of questions to ask the display folks.
I want to install a load meter (actually, I want to install two shunts on the
firewall: one in the alternator output circuit and one in the line going to
all the buss on the panel, selectable through a DPDT switch). My battery and
all my heavy cable is back on the firewall. I want to get a couple of the B&C
shunts that Bob touts and wire to a remote indicator on the panel. To do
this, if it were an analog meter, I would have to gut a voltmeter or ammeter
down to the basic galvanometer and match it to the shunt. For digital
indicators, I dont know what I will have to do to match indicator
characteristics with shunt attributes. Again, I need to know what to ask the
B&C guys about their shunts and what to ask the Cyberdyne guys about their
indicator.
I hate to be the doofus middle man between two guys who know what theyre
doing, but dont see any viable alternative. Any suggestions how to handle
this .... Jim S.
--
Jim Sower ... Destiny's Plaything
Crossville, TN; Long-EZ N83RT, Velocity N4095T
Message 7
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--> AeroElectric-List message posted by: "Jim Stone" <jrstone@insightbb.com>
I have a B&C firwall mounted grounding block to be mounted in my RV. I would like
to pentrate the firewall down low (just above the cockpit floor) with the
negative cable from the battery (located aft). I would not like to locate the
grounding block down there.
Since the firewall is made of SS, can I terminate the negative cable down low with
a suitable bolt, and locate my grounding block at a more accessable location
(up higher)? Or, do I need to run a #2 jumper on the engine side to connect
the two?
Thanks,
Jim
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