Today's Message Index:
----------------------
1. 07:07 AM - Re: Bottom Rudder Bracket attachment (Jaybannist@cs.com)
2. 07:24 AM - Canadian Fly-in (ZodieRocket)
3. 07:34 AM - another electrical question (Edward Moody II)
4. 08:18 AM - facet fuel pumps (Yak52@aol.com)
5. 09:57 AM - Re: another electrical question (Paul Mulwitz)
6. 10:01 AM - Re: facet fuel pumps (Paul Mulwitz)
7. 10:35 AM - Re: PTT wiring (Zed Smith)
8. 11:17 AM - Re: facet fuel pumps (Martin Pohl)
9. 11:19 AM - Re: PTT wiring (Edward Moody II)
10. 03:58 PM - Re: Bottom Rudder Bracket attachment (wa7dvd)
11. 10:40 PM - Re: facet fuel pumps (jetboy)
Message 1
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| Subject: | Bottom Rudder Bracket attachment |
Chris,
My plans (dated 08/05) show the 4 AN3-5A bolts plus the tie-down ring in the aft
row and 4 + marks for rivets in the forward row; but a note that says "six rivets
A5", pointing to the forward row. I just looked at mine and I have 6 rivets.
Somewhere in the Zenith documents, they tell you NOT to count + marks for rivets
and to go with what is called out. I guess this is an example of what they
were talking about.
Jay in Dallas
"chris Sinfield" <chris_sinfield@yahoo.com.au> wrote:
>
>Hi Gang
>I am using the latest plans 03/06 and have a Q. On page 6-B-2 bottom LH coner
, it shows a lower rudder hinge. Ths hing USED to have 2 3/16" bolts 2 A5 rivets
and a tiedown bolt on it with a row of 4 X A5 rivets behind. (older plans)
on my plans it shows the rivets next to the tiedown bolt as being replaced bu
2 more 3/16" bolts , but the top RH corner of that Hinge picture still shows 6
X A5 with only 4 ++++.
>
>Should there be 6 A5 rivets in the back row or 4??? is the 6 a mistake? as the
2 A5 rivets in the next row are now bolts??
>Chris
>Down Under..
>
>
>Read this topic online here:
>
>http://forums.matronics.com/viewtopic.php?p=111113#111113
>
>
Message 2
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The first message bounced so I am re-sending this one.
The RAA Toronto Chapter is pleased to host the Zenith Zip 2007 Fly-in at
the Brampton airport, Ontario, on May 19-21 (21 rain date). This event
will appeal to all Zenith aircraft owners/enthusiasts, as well as to
everyone who =93would rather be flying=94!
Come and celebrate with us your passion for aviation!!
Some of the activities planned over the weekend:
* BBQ Saturday and Sunday
* Computer aided flight planning workshop
* Technical discussions/workshops
* Rudder workshop by Can-Zac Aircraft
* Several exhibits by the sponsors
* Tire-kicking, war stories, making new friends
* Dinner and social evening Saturday night
* Under-the-wing camping
* Possibly more, suggestions welcome
If you plan on staying overnight and attend the dinner and social, we
can benefit from a group rebate at a local hotel. Please contact me and
indicate your intention:
* Supper/social saturday night
* Room for 1 night
* Room for 2 nights
Zenith Zip 2007 Fly-in
Event Schedule
Friday
Non-structured activities
Arrival of some of the participant
BFC to allocate tie downs
Saturday
1000-2100 Show and tell on the field
1130-1400 BBQ burgers, sausages, hot dogs (RAA hangar)
1200-1800 Fly Market
1400-1530 Computer aided flight planning by Chris Basham (RAA
Clubhouse)
Review of existing software packages and
demonstration
1400-1800 Rudder workshop by CanZac (RAA hangar)
1530-1730 Lycoming & alternative engine seminar
1830-2100 BBQ Dinner by =93BBQ Brigade=94 (RAA hangar)
Sunday
0830-1030 Breakfast (at BFC Wing Flight Grille)
1000-1530 Fly Market
1000-1800 Rudder workshop by CanZac (RAA hangar)
1000-1200 Scratch built seminar (RAA Clubhouse)
1130-1330 BBQ Lunch (RAA hangar)
1300-1600 Zenith roundtable discussions on building, maintenance &
flying
Monday
Rain date
Contact info:
Pierre Tanguay
HYPERLINK "mailto:pierre12@magma.ca"pierre12@magma.ca
(613) 687-0037
Alain Ouellet HYPERLINK
"mailto:aouellet@icecanada.com"aouellet@icecanada.com
(905) 458-5424
Mark Townsend
Can-Zac Aviation Ltd.
HYPERLINK
"mailto:president@can-zacaviation.com"president@can-zacaviation.com
HYPERLINK "http://www.can-zacaviation.com/"www.can-zacaviation.com
10:34 AM
9:07 AM
Message 3
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| Subject: | another electrical question |
Thanks to all who responded to the switch rating question recently. On
the strength of that, what is the consensus on using two conductor wire
for the ptt button on my right side stick? Should I go with the cheapest
2 conductor 20 or 22 gauge wire or is something more high tech and
exotic called for here? Should I use a shielded 2 conductor cable? How
about a twisted pair? Let the education commence.
Dred
Message 4
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| Subject: | facet fuel pumps |
I have installed two facet 40108 pumps in series on the floor in front of
the gascolator in a 601xl. The line then goes through the firewall to the
carburetor on a continental 0200a. There is no pressure regulator except the pumps
themselves. The fuel pressure indicator is at the carb. Upon starting, the
fuel pressure using one pump goes to 4 pounds, but at cruise rpm's the
pressure goes to 1 pound. Adding the second pump raises the pressure at cruise
to
7 pounds, but floods out the carb if rpm's are lowered to pattern power
settings. I am at a loss to explain, but searched the archives and noticed that
others have had low pressure problems with the facet cube pumps upon occasion.
Is the installation in series the problem? Are the pumps not of sufficient
volume? Should I go to the traditional piper style 480545 facet interrupter
pumps? There is no mechanical fuel pump on this engine as it was taken from a
cessna 150.
_Yak52@aol.com_ (mailto:Yak52@aol.com)
************************************** See what's free at http://www.aol.com.
Message 5
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| Subject: | Re: another electrical question |
Hi Ed,
I just did some searching on the net and failed to find anything
useful about PTT wiring. That means my comments are pure guesswork,
and you should really ask the manufacturer of the device (radio or
audio panel) maker to be sure you are not causing noise problems or
other issues with your choices.
I would guess the PTT function doesn't get involved in any audio
signal quality issues and also doesn't take much current. That means
the only interesting issues left are how flexible the wire is and
what sort of insulation it has. Military folks don't allow vinyl
wire insulation on airplanes because of the noxious funes generated
when they are burned. If you are worried about this issue then
Tefzel insulated wires should be chosen. If you use normal wire,
selected stranded wire over solid because it is more flexible and
less likely to break.
Twisting the wires can't hurt, but probably won't make much
electrical difference for this application. I wouldn't use shielded
wire for this function.
Paul
XL fuselage
do not archive
At 07:28 AM 5/6/2007, you wrote:
>Thanks to all who responded to the switch rating question recently.
>On the strength of that, what is the consensus on using two
>conductor wire for the ptt button on my right side stick? Should I
>go with the cheapest 2 conductor 20 or 22 gauge wire or is something
>more high tech and exotic called for here? Should I use a shielded 2
>conductor cable? How about a twisted pair? Let the education commence.
>
>Dred
>
Message 6
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| Subject: | Re: facet fuel pumps |
One problem you certainly have with this setup is loss of electrical
power will kill the engine. Since you have a low wing, fuel will
not get to the engine if power is removed from the electric
pumps. That is why it is customary to use a combination of electric
and mechanical pumps on an airplane.
It seems prudent to add a mechanical pump to this installation.
Paul
XL fuselage
At 08:16 AM 5/6/2007, you wrote:
>I have installed two facet 40108 pumps in series on the floor in
>front of the gascolator in a 601xl. The line then goes through the
>firewall to the carburetor on a continental 0200a. There is no
>pressure regulator except the pumps themselves. The fuel pressure
>indicator is at the carb. Upon starting, the fuel pressure
>using one pump goes to 4 pounds, but at cruise rpm's the pressure
>goes to 1 pound. Adding the second pump raises the pressure at
>cruise to 7 pounds, but floods out the carb if rpm's are lowered to
>pattern power settings. I am at a loss to explain, but searched the
>archives and noticed that others have had low pressure problems with
>the facet cube pumps upon occasion. Is the installation in series
>the problem? Are the pumps not of sufficient volume? Should I go
>to the traditional piper style 480545 facet interrupter pumps?
>There is no mechanical fuel pump on this engine as it was taken from
>a cessna 150.
><mailto:Yak52@aol.com>Yak52@aol.com
>
Message 7
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do not archive
Ed,
Since there is usually not any easy way to suspend the wire in a nearly-vertical
stick other than the connections on the switch, let me offer this: Use RG-58C/U
coax.
This breed has stranded center conductor for flexibility, and the shield can be
used as the strain relief. Accomplish this by finishing the PPT switch end
such that the center conductor is a bit longer that the shield. Solder the center
to one side, then pull the shield into the switch enough to put slack in
the center conductor. Just a slight bend in the center conductor is sufficient.
The shield, back at the radio or intercom box, goes to ground/earth while the center
serves as the PTT.
Being 'shielded' serves on particular purpose electrically, but the shield does
serve mechanically.
Just be sure you don't use solid center conductor.
Regards,
Zed
Message 8
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| Subject: | Re: facet fuel pumps |
The pressure should double for two fuel pumps in serie. According to an email answer
of info@facet-pumpen.de it is important that you keep a distance of at least
40 cm (= 15 inch) between the two pumps.
I would always rely on a mechanical pump too!!!
Rgds
Martin
--------
Martin Pohl
Zodiac XL QBK
8645 Jona, Switzerland
www.pohltec.ch/ZodiacXL
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=111187#111187
Message 9
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The ptt switch current is described by RAC as less than 50 milliamps
(which is the rating of their momentary switch). Since the responders
indicate that this low current is not likely to be a noise problem for
the radio/intercom, the remaining issues are supporting the wiring
inside the stick, using non-toxic Tefzel wire, and assuring flexibility
of the wire due to stick movement.
RAC takes care of the support issue by having the wire looped through
the mounting plate of the switch twice near the solder point. I feel
that is adequate support for the wire so using the shield of a coax wire
for anchorage should not be needed in this application.
The suggestion to use a wire that won't poison me before I burn to a
crisp in a fire sounds like a good one, so Tefzel it is. Nobody likes a
toxic corpse.
Likewise the suggestion to avoid solid wire is well taken; braided wire
it is then. Twisting the pair may reduce what little RF noise they
produce so that will be done too.
Someone mentioned somewhere in the archives I believe, that there should
be a gromment guarding the wire from chaffing at the point at which it
exits the bottom of the stick. I have a few large O.D. grommets (about 1
inch or so) with very small center holes (about1/8"). If I can wedge one
of these into the bottom opening of each stick with the wires threaded
through them, that should do the job nicely.
Thanks to Paul and Zed for the help and advice,
Dred
I think this deserves archiving.
Message 10
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| Subject: | Re: Bottom Rudder Bracket attachment |
Should there be 6 A5 rivets in the back row or 4??? is the 6 a mistake? as the
2 A5 rivets in the next row are now bolts??
I think the reference to 6 A5 rivets is a carry over from earlier sets of plans.
I have three versions and it is there in the all three. I believe it is counting
2 in one row (now replaced with AN-3 bolts) and 4 in the other row. The
construction photos in the guide clearly show four rivets in the second row of
the finished aircraft.
I hope in only needs four on the back row because that is how mine is built.
BK Johnson
N601BK (reserved)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=111220#111220
Message 11
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| Subject: | Re: facet fuel pumps |
The 0-200 has a mount pad for mechanical pump for your application, so best practice
is to fit one and use one electric pump as boost pump. its also possible
to fit the electric pumps in parallel, with a non-return check valve in each
outlet line, if the pumps dont alredy have this. But you need dual electric supply
then.
Ralph, ex - c150
--------
Ralph - CH701 / 2200a
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=111269#111269
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