Today's Message Index:
----------------------
1. 05:43 AM - Re: E-bus relay (Robert L. Nuckolls, III)
2. 06:48 AM - Re: PA-22 system (BobsV35B@aol.com)
3. 07:27 AM - Re: PA-22 system (Robert L. Nuckolls, III)
4. 11:09 AM - Re: "Hockey Puck" GPS receiver that uses RS-232 (Greg Young)
5. 11:59 AM - Re: "Hockey Puck" GPS receiver that uses RS-232 (Glaeser, Dennis A)
6. 01:25 PM - Re: SD-8 Components on Firewall? (rckol)
7. 05:59 PM - Re: PA-22 system (jetech)
8. 06:34 PM - Re: Rotax 912ULS starter (Les Goldner)
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 |
|
At 10:46 PM 3/29/2009, you wrote:
>
>Bob...
>
>I see on some Z schematics you are suggesting a relay to switch the
>E-bus alt. feed. My thought is that this adds another failure
>mode. I don't know what the drop out voltage is for the 701 relay
>but might it drop out before the battery goes completely dead when
>that last couple of minutes of battery life could be crucial? Why
>wouldn't using a both poles of a two pole e-bus alt. feed toggle
>switch be sufficient to carry 20 amps instead of the relay?
12v relays will stay engaged long after the battery
is gone. A 12v battery is 95+ percent used up at 10.5
volts. A typical 12v relay drops at under 4 volts.
Further the relay is used to provide REMOTE control
of a potentially, always-hot feeder to the e-bus
from the battery bus. It's like a mini-battery
contactor effecting LOCAL control of the alternate
feed path AT THE BATTERY BUS.
It becomes advisable when the e-bus alternate feed
fuse goes over 7A . . . which is 2A greater
than the "rule from dark places" suggesting: "long,
always-hot feeders should be protected at 5A or less."
The 5A suggestion is in consideration of the
response time for breakers. Fuses are so much
faster than breakers that I've suggested we
can go up to 7A . . . but if you want to go
higher . . . it's up to you and depending on
whence your own "rule" arises.
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
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 |
|
Subject: | Re: PA-22 system |
Good Morning jetech,
Just out of curiosity, do you plan on getting a local FAA approval via the
337 route for that modification or do you think it meets the criteria for a
minor alteration?
Happy Skies
Old Bob
AKA
Bob Siegfried
Ancient Aviator
628 West 86th Street
Downers Grove, IL 60516
630 985-8502
Stearman N3977A
Brookeridge Air Park LL22
In a message dated 3/26/2009 6:54:02 P.M. Central Daylight Time,
av8tor@hughes.net writes:
--> AeroElectric-List message posted by: "jetech" <av8tor@hughes.net>
After looking at the Z-13/8 schematic and trying to figure out the best
layout for the old tripacer I think I am close to having a initial plan.
For those not familiar with the PA-22, there is an electrical box mounted
under the pilots seat on the front side of the seat structure. This box houses
the original starter contactor, start button, regulator, and some fuses. The
battery is located under the co-pilots seat.
I would like to fit the batt bus (FH-6 block), Batt contactor, Starter
contactor, push to start, alternator current limiter, two shunts main/aux, and
the
relay for the HD E-buss circuit under the seat. The push to start circuit
will be hooked from the main bus side of the batt contactor to a CB then to the
starter contactor. The CB will also be with the under seat components.
We removed the original brake cylinder from under the pilots seat so I am
trying to figure out the best method to get these components under the seat. I
would like to find some avionics tray slides and fit everything on a slide
out tray, width would be limited but there would be some depth.
The starter and alternator cables will run forward 70" and 80" to their
units (Sky-tec and L-40). The
The behind the panel components will be the main buss, E-bus, and F1 test
receptacle.
On the cabin side of the firewall will be the main controller/regulator
(LR3C-14), Aux regulator (PMR1C and OV kit), and ground system (GB24).
The battery will have its original local ground.
I have a question:
Can the circuit that runs from the SD-8 shunt to the batt side of the batt
contactor instead be fused at the batt bus using an ATC fuse?
I welcome any suggestions to what I have planned so far.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=236301#236301
**************A Good Credit Score is 700 or Above. See yours in just 2 easy
steps! (http://pr.atwola.com/promoc
lk/100126575x1220439616x1201372437/aol?redir=http:%2F%2Fwww.freecreditreport.com%2Fpm%2Fdefault.aspx%3Fsc%3D668072%26hmpgID
%3D62%26bcd%3DfebemailfooterNO62)
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: PA-22 system |
At 06:50 PM 3/26/2009, you wrote:
>
>After looking at the Z-13/8 schematic and trying to figure out the
>best layout for the old tripacer I think I am close to having a initial plan.
>
>For those not familiar with the PA-22, there is an electrical box
>mounted under the pilots seat on the front side of the seat
>structure. This box houses the original starter contactor, start
>button, regulator, and some fuses. The battery is located under the
>co-pilots seat.
>
>I would like to fit the batt bus (FH-6 block), Batt contactor,
>Starter contactor, push to start, alternator current limiter, two
>shunts main/aux, and the relay for the HD E-buss circuit under the
>seat. The push to start circuit will be hooked from the main bus
>side of the batt contactor to a CB then to the starter contactor.
>The CB will also be with the under seat components.
>
>We removed the original brake cylinder from under the pilots seat so
>I am trying to figure out the best method to get these components
>under the seat. I would like to find some avionics tray slides and
>fit everything on a slide out tray, width would be limited but there
>would be some depth.
>
>The starter and alternator cables will run forward 70" and 80" to
>their units (Sky-tec and L-40). The
>
>The behind the panel components will be the main buss, E-bus, and F1
>test receptacle.
>
>On the cabin side of the firewall will be the main
>controller/regulator (LR3C-14), Aux regulator (PMR1C and OV kit),
>and ground system (GB24).
>
>The battery will have its original local ground.
>
>I have a question:
>Can the circuit that runs from the SD-8 shunt to the batt side of
>the batt contactor instead be fused at the batt bus using an ATC fuse?
>
>I welcome any suggestions to what I have planned so far.
Before we launch into details of the implementation, have
you flown your proposal by the local FAA and enlisted
the assistance of an AI?
I had a customer some years ago with a very nice
Tri-Pacer but with a threadbare, arcane and
minimalist electrical system. He wanted to put
Z13/8 in the airplane. He might as well have wanted
to replace the engine with a turbofan. The
system was going to cost about $1200 in parts
to install . . . and $50K or so in paperwork
to get an STC.
He ended up putting an L40 on with a 337 and
rewired all the original hardware with 22759.
That only cost him $2000.
Bob . . .
----------------------------------------)
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
----------------------------------------
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: | "Hockey Puck" GPS receiver that uses RS-232 |
Wow, what a difference a GPS makes! After looking at that ugly, black,
useless map page on the bench and then in the plane I'd been unimpressed
with GRT's map. Now I have color, airports, runways and functionality I
hadn't seen before. It just doesn't demo well without a working GPS.
Although I plan on using my GX-60 GPS it's not hooked up yet. So I ordered
the Byonics GPS2 to use while building and later as a backup. I got it
hooked up this weekend and it's wonderful. It's well worth the $75 (incl
shipping) just to have everything work on the bench. Thanks for the
reference.
Regards,
Greg Young - Houston (DWH)
RV-6 N6GY - project Phoenix
Navion N5221K - just an XXL RV-6A
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Michael W
Stewart
Sent: Wednesday, March 25, 2009 10:38 AM
Subject: Re: AeroElectric-List: "Hockey Puck" GPS receiver that uses RS-232
http://www.byonics.com/tinytrak/gps.php
from their website.
===============
The GPS2 has a female DB-9 connector to connect directly to the
TinyTrak3Plus, is very sensitive, and is built with the SiRFstar III
chipset. It has the same DB-9 connector as the GPS1. It features Wide Area
Augmentation System (WAAS) to provide unmatched accuracy and performance. It
has an on-board rechargeable battery for fast satellite acquisition during
power-up, and requires 5V to operate. Tracking up to 20 satellites, the
Byonics GPS2 can be used with almost every major mapping software (NMEA 0183
v2.2 data protocol).
The GPS2 unit comes with a 6 foot cable, an internal magnet for versatile
mounting options, and is water resistant.
It draws 65mA typically, and will work to an altitude of 18 km and speed of
515 m/s. Weight is 3.6oz. See below for more stats.
This is a 5 volt GPS. Do not connect this GPS to 12 volts or it will be
destroyed. If using with a TinyTrak3Plus, configure J7 for 5 volts (the
bottom two of three square pads soldered together). Do not use directly with
a TinyTrak3 (non-Plus). If you have a TinyTrak3, you need a GPAC or GPAP
power adapter below.
Byonics GPS2 - $69. The Byonics GPS2 employs the SiRF III chipset, sends
NMEA data at 4800 baud, and is directly compatible with the TinyTrak3Plus.
Requires 5 volts DC. Pinout: 2 - Serial Out, 3 - Serial In (not normally
used), 4 - 5V Power in, 5 - Ground. Sends NMEA sentences: $GPGSA, $GPRMC,
$GPGGA, $GPGSV.
=================
Mike
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: | Re: "Hockey Puck" GPS receiver that uses RS-232 |
Got my Byronics GPS unit and hooked it up yesterday - works great!
I was even able to pry the case apart so I could remove the magnet,
because I have it located on the glareshield in front of the Mag
Compass.
Another problem solved by the AeroElectric list.
Dennis Glaeser
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: SD-8 Components on Firewall? |
Thanks Bob, interesting food for thought.
--------
rck
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=236910#236910
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: | Re: PA-22 system |
We plan to present an entire package to the FAA for the electrical upgrade including
removing the vacuum pump and installing the SD-8. I am still compiling the
information to make the best argument we can. We will take whatever route they
advise as far as paperwork is concerned.
Bob
I am going on your recommendation to present a detailed paperwork package that
will hopefully put put things in our favor.
This is our company airplane, we are an aircraft maintenance business, My partner
is an IA and DAR so the paperwork will be free as long as an STC isn't involved.
We hope it will all be done on 337.
Our desire is to update this plane and pave the way for others to do the same.
If approved we will post the paperwork on the short wing piper club site so others
can use it without cost just as Bob has.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=236955#236955
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: | Rotax 912ULS starter |
I'll could check next time I'm out, but my amperage draw should be lower
than yours due to much reduced stress on the 912 starter from an aftermarket
spark retard mod. I got mine from Lockwood Aviation. It retards the spark to
TDC during startup so that the starter does not have to overcome the
backwards push of cylinders firing before TDC. Really makes a difference and
protects the engine from jerking backwards when you let go of the starter
button.
Les
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of icrashrc
Sent: Sunday, March 29, 2009 4:03 AM
Subject: AeroElectric-List: Rotax 912ULS starter
Does anyone know the amp draw on the newer model 912 ULS starter?
--------
Scott
www.ill-EagleAviation.com
do not archive
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=236618#236618
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! --
|