Today's Message Index:
----------------------
1. 01:09 AM - Re: Re: Propeller discussions (Duncan McFadyean)
2. 02:34 AM - Re: Fuel pump wiring (nigel charles)
3. 02:39 AM - Re: Propeller discussions (David Joyce)
4. 06:46 AM - Re: Re: Propeller discussions (lmorgan822@aol.com)
5. 07:41 AM - Re: Propeller discussions (josok)
6. 09:43 AM - Rotax 912UL Deals (Dan Bish)
7. 11:18 AM - Re: Rotax 912UL Deals (Bruce)
8. 01:32 PM - Re: Propeller discussions (KARL HEINDL)
9. 02:03 PM - Re: Rotax 912UL Deals (Paul McAllister)
10. 04:02 PM - FW: Fuel pump wiring (Paul McAllister)
11. 04:45 PM - RF Problem (JEFF ROBERTS)
12. 05:20 PM - Re: RF Problem (Paul McAllister)
13. 05:57 PM - Re: RF Problem (SPurpura@aol.com)
14. 06:21 PM - Re: RF Problem (Cliff Shaw)
15. 08:04 PM - Re: RF Problem (Fred Fillinger)
16. 08:45 PM - Re: RF Problem (JEFF ROBERTS)
Message 1
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| Subject: | Re: RE: Propeller discussions |
--> Europa-List message posted by: "Duncan McFadyean" <ami@mcfadyean.freeserve.co.uk>
Jos,
Could you ask Larry to scan some brochures for placing on the Photoshare?
And/or ask for details of a Europa compliant variant (eg 64" 3-blade).
Duncan Mcf.
do not archive
----- Original Message -----
From: <lmorgan822@aol.com>
Sent: Sunday, February 12, 2006 7:16 AM
Subject: Re: Europa-List: RE: Propeller discussions
> --> Europa-List message posted by: lmorgan822@aol.com
>
> Hi Jos,
>
> We have both a marine and aircraft prop. We have not built our web site
> for the A/C prop yet. This weekend I am testing a 4 bladed variant on a
> T-51 with a Rotax 914. We have 2, 3, and 4 bladed props, and two hub
> sizes. The larger hubs are designed for the direct drive engines in the
> 180 to 350 HP, the smaller hubs are designed for the Rotax, Jabiru, etc,
> although currently running on a 200 HP Chevy V6 in an RV6 with a reduction
> drive.
>
> I am the owner of the company. We are an Oregon LLC.
>
> If you have any further questions, please don't hesitate to contact me at
> lmorgan822@hotmail.com. 503-804-5508.
>
> Thank you for your inquiry.
>
> Larry Morgan
>
>
> -----Original Message-----
> From: josok <josok-e@ukolo.fi>
> is empty
> Subject: Europa-List: RE: Propeller discussions
>
>
> --> Europa-List message posted by: "josok" <josok-e@ukolo.fi>
>
> Hi Imorgan,
>
> This list has seen your advertising for Vari-prop before. Since i will be
> missing Sun 'n Fun this year, and maybe one or two other Europhiles also,
> could
> you elaborate a bit? Are you connected to that company or just
> enthusiastic
> about it? Google finds variprop, excellent propellers for boats!
>
> Regards,
>
> Jos Okhuijsen
> ----------------
>
>
>
Message 2
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| Subject: | Fuel pump wiring |
--> Europa-List message posted by: "nigel charles" <nwcmc@tiscali.co.uk>
As long as your earth wiring is robust there will be no problem. However
if you want to cater for the worst case wire the earth to the regulator
earth connection. Any loss of earth wiring elsewhere in the system will
not affect supply to the pump.
Nigel Charles
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Simon Smith
Sent: 11 February 2006 22:49
Subject: Europa-List: Fuel pump wiring
--> Europa-List message posted by: "Simon Smith" <jodel@nildram.co.uk>
Hi all,
I was just looking at the wiring for the Fuel pumps on the 914 and I
came up
with a question.
FP1 is wired off the alternator. Would it make more sense to earth it
direct to the engine (no battery etc in the equation) or would you just
go
to the normal -ve bus bar (or even the battery)?
cheers
Simon
G-BZTN kit 504
Message 3
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| Subject: | Re: Propeller discussions |
--> Europa-List message posted by: "David Joyce" <davidjoyce@doctors.org.uk>
Karl, You are right - 62" or 1600mm is the standard diameter prop fitted to
the Europa. 64" or 1625mm is the maximum that Europa recommend or that PFA
will approve, at least for the mono and I doubt it would be more for the
tricycle.
If you have the SR3000 it will feather. Do you really feel that 3
blades will make a significant difference to glide performance when
feathered?
Regards, David Joyce, G-XSDJ
----- Original Message -----
From: "KARL HEINDL" <kheindl@msn.com>
Sent: Saturday, February 11, 2006 5:39 PM
Subject: RE: Europa-List: Propeller discussions
> --> Europa-List message posted by: "KARL HEINDL" <kheindl@msn.com>
>
>
> Paul,
>
> Are yu sure about the 72"?. I am not near my Europa at the moment, but I
> could have sworn that that should read 62".
> I had investigated the Hoffmann (also German) propeller, because it is
widey
> used on certified aircraft with Rotax, i.e. Katana, Dimona and other
> motorgliders. It is 2-blade, cs, and feathering.
> It is unlikely to be interesting for the Europa because: it is hydraulic,
> twice as heavy as the Airmaster setup, and twice as expensive as the
> Airmaster.
> As far as I know, Airmaster don't actually make propellers. They make the
> AC200 control box and electronics etc. and fit it with the Warp Drive.
> I am also planning to upgrade this year and my present choice is the new
> Woodcomp SR3000 with twin-blade of 170cm (67"). Anything longer would not
be
> wise on the Europa, and definately not on the mono. Reason for the 2-blade
> version is reduced drag whenever I am in glider mode (one of these days).
>
> Karl
>
>
> >From: "Paul McAllister" <paul.mcallister@qia.net>
> >To: <europa-list@matronics.com>
> >Subject: RE: Europa-List: Propeller discussions
> >Date: Sat, 11 Feb 2006 07:21:03 -0600
> >
> >--> Europa-List message posted by: "Paul McAllister"
> ><paul.mcallister@qia.net>
> >
> >Jeff,
> >
> >I just looked at the manual and under Maximum diameter they have 72" /
183
> >cm, but then under that they state the weight and in brackets "Data shown
> >for 64" diameter and 10" spinner"
> >
> >So.... I don't really know. You would think that you get a reduction in
> >diameter for increasing the number of blades for a given HP capacity.
> >
> >My interest in this whole topic is two fold. John Hurst once told me that
> >the Whirlwind propeller was good for an additional 20 knots at 17,500'
over
> >the Airmaster. At first glance this doesn't make much sense, usually a
> >multi bladed propeller is more efficient at altitude. John agreed but
> >seemed to think that the Warp drive blades were just not very efficient.
> >Given that no A:B comparisons were made as a controlled experiment, then
> >its
> >just an opinion.
> >
> >Most of my flying is long cross country trips, typically in the 500 ~ 800
> >nm
> >range. A propeller that would give me 20 more knots at altitude is
> >seductive.
> >
> >My other interest in the whole topic is service, 6~8 week cycle times
isn't
> >very good. I suspect that from the US the issue same issues would exist
> >for
> >the European sourced products. So, am I about to spend +6k for another
> >propeller that might go faster and can provide local service.... probably
> >not, but I am just curious as to why the MT has never caught on in the
> >Europa community.
> >
> >Cheers, Paul
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
>
> ________________________________________________________________________
> National Patient Safety Agency - supporting Doctors.net.uk members in safe
practice.
> http://www.doctors.net.uk/NPSA
> _______________________________________________________________________
>
>
Message 4
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| Subject: | Re: RE: Propeller discussions |
--> Europa-List message posted by: lmorgan822@aol.com
Greetings Duncan and Jos,
I have brochures that I can send and will try to scan. I am not a computer whiz!!!
We can custom make blades to any length you need. I currently have a set of 64's.
These blades are not cut down from something else. They are actually made
from scratch for your particular application.
If anyone knows of a "Europa Driver" in the Pacific Northwest USA that would like
to do some tests, I need to talk to them.
Thanks,
Larry
-----Original Message-----
From: Duncan McFadyean <ami@mcfadyean.freeserve.co.uk>
Sent: Sun, 12 Feb 2006 09:02:34 -0000
Subject: Re: Europa-List: RE: Propeller discussions
--> Europa-List message posted by: "Duncan McFadyean" <ami@mcfadyean.freeserve.co.uk>
Jos,
Could you ask Larry to scan some brochures for placing on the Photoshare?
And/or ask for details of a Europa compliant variant (eg 64" 3-blade).
Duncan Mcf.
do not archive
----- Original Message -----
From: <lmorgan822@aol.com>
Sent: Sunday, February 12, 2006 7:16 AM
Subject: Re: Europa-List: RE: Propeller discussions
> --> Europa-List message posted by: lmorgan822@aol.com
>
> Hi Jos,
>
> We have both a marine and aircraft prop. We have not built our web site
> for the A/C prop yet. This weekend I am testing a 4 bladed variant on a
> T-51 with a Rotax 914. We have 2, 3, and 4 bladed props, and two hub
> sizes. The larger hubs are designed for the direct drive engines in the
> 180 to 350 HP, the smaller hubs are designed for the Rotax, Jabiru, etc,
> although currently running on a 200 HP Chevy V6 in an RV6 with a reduction
> drive.
>
> I am the owner of the company. We are an Oregon LLC.
>
> If you have any further questions, please don't hesitate to contact me at
> lmorgan822@hotmail.com. 503-804-5508.
>
> Thank you for your inquiry.
>
> Larry Morgan
>
>
> -----Original Message-----
> From: josok <josok-e@ukolo.fi>
> is empty
> Subject: Europa-List: RE: Propeller discussions
>
>
> --> Europa-List message posted by: "josok" <josok-e@ukolo.fi>
>
> Hi Imorgan,
>
> This list has seen your advertising for Vari-prop before. Since i will be
> missing Sun 'n Fun this year, and maybe one or two other Europhiles also,
> could
> you elaborate a bit? Are you connected to that company or just
> enthusiastic
> about it? Google finds variprop, excellent propellers for boats!
>
> Regards,
>
> Jos Okhuijsen
> ----------------
>
>
>
Message 5
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| Subject: | RE: Propeller discussions |
--> Europa-List message posted by: "josok" <josok-e@ukolo.fi>
Larry, ask your printer. He probably already has a digital image in some form,
easier and a better quality. You are probably in the best place to ask for a
testbed on a Europa right here on the forum and list.
Regards,
Jos Okhuijsen
----------------
Message 6
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| Subject: | Rotax 912UL Deals |
--> Europa-List message posted by: "Dan Bish" <n914rb@earthlink.net>
Hi All,
I just spoke with Dave Dent, the guy who has those 912's for sale. He's just finished
up work with the DOD on UAVs and is selling off inventory. (Thanks, Bruce,
for the orginal tip on this).
He said it'd be OK to put his phone number out as he's got 3 912ULs he wants to
clear out of his hanger. New, in the box, already preserved. Significant savings
over new. My deal with him for a 914 couldn't have gone better. All the 914s
are gone though.
Call him at 925-337-0115 (cell) if you're interested. He's in the Oakland, CA area
but shipped mine to me hassle free.
Dan
--------
Kit A144 - N914RB
Mono, 914F
About 40% done, CM finished, most controls, tower, tailplanes, etc. Working on
wing incidence and landing gear.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=11640#11640
Message 7
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| Subject: | Rotax 912UL Deals |
--> Europa-List message posted by: "Bruce" <bruce@justbruce.com>
Dan,
I was not surprised to hear that you had great success dealing with Dave
Dent in acquiring your Rotax 914. The prices for his new, still-in-the-box
engines are extremely attractive, and I expect that the people who buy his
remaining Rotax 912 engines will be equally pleased.
Dave is well known locally as a good-guy, and his knowledge of Rotax engines
is incredible. He would likely be a good technical contact for Paul M. who
has recently shared on this list his interest in developing a Rotax
fuel-injection system. I would think that perhaps someone like Dave Dent who
has developed and tested Rotax modifications that allow a 914 to output 80HP
at an altitude of 80,000 feet might know something about optimizing fuel
flow to the cylinders.
Regards,
Bruce L.
Tracy, California
XS A142
Berube Conventional Gear
-----Original Message-----
From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-
server@matronics.com] On Behalf Of Dan Bish
Sent: Sunday, February 12, 2006 9:40 AM
To: europa-list@matronics.com
Subject: Europa-List: Rotax 912UL Deals
--> Europa-List message posted by: "Dan Bish" <n914rb@earthlink.net>
Hi All,
I just spoke with Dave Dent, the guy who has those 912's for sale. He's
just finished up work with the DOD on UAVs and is selling off inventory.
(Thanks, Bruce, for the orginal tip on this).
He said it'd be OK to put his phone number out as he's got 3 912ULs he
wants to clear out of his hanger. New, in the box, already preserved.
Significant savings over new. My deal with him for a 914 couldn't have
gone better. All the 914s are gone though.
Call him at 925-337-0115 (cell) if you're interested. He's in the
Oakland, CA area but shipped mine to me hassle free.
Dan
--------
Kit A144 - N914RB
Mono, 914F
About 40% done, CM finished, most controls, tower, tailplanes, etc.
Working on wing incidence and landing gear.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=11640#11640
Message 8
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| Subject: | Re: Propeller discussions |
--> Europa-List message posted by: "KARL HEINDL" <kheindl@msn.com>
Dave,
I think you mean 2 blades. I haven't really decided yet and it all depends
what Woodcomp say about differences in performance. I got the impression
from Jiri that the twin-blades perform better, but I am not convinced yet.
The drag improvement in gliding may be very minimal, but other advantages
are: less weight, lower price, and better visibility in gliding mode
whenever the prop stops in the horizontal position.
Best regards, Karl
do not archive
>From: "David Joyce" <davidjoyce@doctors.org.uk>
>To: <europa-list@matronics.com>
>Subject: Re: Europa-List: Propeller discussions
>Date: Sun, 12 Feb 2006 10:39:05 -0000
>
>--> Europa-List message posted by: "David Joyce"
><davidjoyce@doctors.org.uk>
>
>Karl, You are right - 62" or 1600mm is the standard diameter prop fitted to
>the Europa. 64" or 1625mm is the maximum that Europa recommend or that PFA
>will approve, at least for the mono and I doubt it would be more for the
>tricycle.
> If you have the SR3000 it will feather. Do you really feel that
>3
>blades will make a significant difference to glide performance when
>feathered?
>Regards, David Joyce, G-XSDJ
>----- Original Message -----
>From: "KARL HEINDL" <kheindl@msn.com>
>To: <europa-list@matronics.com>
>Sent: Saturday, February 11, 2006 5:39 PM
>Subject: RE: Europa-List: Propeller discussions
>
>
> > --> Europa-List message posted by: "KARL HEINDL" <kheindl@msn.com>
> >
> >
> > Paul,
> >
> > Are yu sure about the 72"?. I am not near my Europa at the moment, but I
> > could have sworn that that should read 62".
> > I had investigated the Hoffmann (also German) propeller, because it is
>widey
> > used on certified aircraft with Rotax, i.e. Katana, Dimona and other
> > motorgliders. It is 2-blade, cs, and feathering.
> > It is unlikely to be interesting for the Europa because: it is
>hydraulic,
> > twice as heavy as the Airmaster setup, and twice as expensive as the
> > Airmaster.
> > As far as I know, Airmaster don't actually make propellers. They make
>the
> > AC200 control box and electronics etc. and fit it with the Warp Drive.
> > I am also planning to upgrade this year and my present choice is the new
> > Woodcomp SR3000 with twin-blade of 170cm (67"). Anything longer would
>not
>be
> > wise on the Europa, and definately not on the mono. Reason for the
>2-blade
> > version is reduced drag whenever I am in glider mode (one of these
>days).
> >
> > Karl
> >
> >
> > >From: "Paul McAllister" <paul.mcallister@qia.net>
> > >To: <europa-list@matronics.com>
> > >Subject: RE: Europa-List: Propeller discussions
> > >Date: Sat, 11 Feb 2006 07:21:03 -0600
> > >
> > >--> Europa-List message posted by: "Paul McAllister"
> > ><paul.mcallister@qia.net>
> > >
> > >Jeff,
> > >
> > >I just looked at the manual and under Maximum diameter they have 72" /
>183
> > >cm, but then under that they state the weight and in brackets "Data
>shown
> > >for 64" diameter and 10" spinner"
> > >
> > >So.... I don't really know. You would think that you get a reduction
>in
> > >diameter for increasing the number of blades for a given HP capacity.
> > >
> > >My interest in this whole topic is two fold. John Hurst once told me
>that
> > >the Whirlwind propeller was good for an additional 20 knots at 17,500'
>over
> > >the Airmaster. At first glance this doesn't make much sense, usually a
> > >multi bladed propeller is more efficient at altitude. John agreed but
> > >seemed to think that the Warp drive blades were just not very
>efficient.
> > >Given that no A:B comparisons were made as a controlled experiment,
>then
> > >its
> > >just an opinion.
> > >
> > >Most of my flying is long cross country trips, typically in the 500 ~
>800
> > >nm
> > >range. A propeller that would give me 20 more knots at altitude is
> > >seductive.
> > >
> > >My other interest in the whole topic is service, 6~8 week cycle times
>isn't
> > >very good. I suspect that from the US the issue same issues would
>exist
> > >for
> > >the European sourced products. So, am I about to spend +6k for another
> > >propeller that might go faster and can provide local service....
>probably
> > >not, but I am just curious as to why the MT has never caught on in the
> > >Europa community.
> > >
> > >Cheers, Paul
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > ________________________________________________________________________
> > National Patient Safety Agency - supporting Doctors.net.uk members in
>safe
>practice.
> > http://www.doctors.net.uk/NPSA
> > _______________________________________________________________________
> >
> >
>
>
Message 9
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| Subject: | Rotax 912UL Deals |
--> Europa-List message posted by: "Paul McAllister" <paul.mcallister@qia.net>
Bruce,
Yes I have spoken with Dave and I am buying one of his 914's. What he
doesn't know about Rotax's and fuel injection isn't worth knowing.
Paul
do not archive
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of Bruce
Sent: Sunday, February 12, 2006 1:12 PM
Subject: RE: Europa-List: Rotax 912UL Deals
--> Europa-List message posted by: "Bruce" <bruce@justbruce.com>
Dan,
I was not surprised to hear that you had great success dealing with Dave
Dent in acquiring your Rotax 914. The prices for his new, still-in-the-box
engines are extremely attractive, and I expect that the people who buy his
remaining Rotax 912 engines will be equally pleased.
Dave is well known locally as a good-guy, and his knowledge of Rotax engines
is incredible. He would likely be a good technical contact for Paul M. who
has recently shared on this list his interest in developing a Rotax
fuel-injection system. I would think that perhaps someone like Dave Dent who
has developed and tested Rotax modifications that allow a 914 to output 80HP
at an altitude of 80,000 feet might know something about optimizing fuel
flow to the cylinders.
Regards,
Bruce L.
Tracy, California
XS A142
Berube Conventional Gear
-----Original Message-----
From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-
server@matronics.com] On Behalf Of Dan Bish
Sent: Sunday, February 12, 2006 9:40 AM
To: europa-list@matronics.com
Subject: Europa-List: Rotax 912UL Deals
--> Europa-List message posted by: "Dan Bish" <n914rb@earthlink.net>
Hi All,
I just spoke with Dave Dent, the guy who has those 912's for sale. He's
just finished up work with the DOD on UAVs and is selling off inventory.
(Thanks, Bruce, for the orginal tip on this).
He said it'd be OK to put his phone number out as he's got 3 912ULs he
wants to clear out of his hanger. New, in the box, already preserved.
Significant savings over new. My deal with him for a 914 couldn't have
gone better. All the 914s are gone though.
Call him at 925-337-0115 (cell) if you're interested. He's in the
Oakland, CA area but shipped mine to me hassle free.
Dan
--------
Kit A144 - N914RB
Mono, 914F
About 40% done, CM finished, most controls, tower, tailplanes, etc.
Working on wing incidence and landing gear.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=11640#11640
Message 10
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| Subject: | Fuel pump wiring |
--> Europa-List message posted by: "Paul McAllister" <paul.mcallister@qia.net>
Simon,
I came across this photograph, it decribes this type of grounding system I
mentioned in my previous post.
http://www.aeroelectric.com/Pictures/Grounding/gbusiso.jpg
Regards, Paul
-----Original Message-----
From: Paul McAllister [mailto:paul.mcallister@qia.net]
Sent: Saturday, February 11, 2006 7:02 PM
Subject: RE: Europa-List: Fuel pump wiring
Simon,
I would encourage you to take a look at the Ground blocks offered by B&C.
Take a look at
http://www.bandc.biz/cgi-bin/ez-catalog/cat_display.cgi?26X358218 and scroll
down the page.
I used a 48 tab block on the inside of the firewall and a 24 pin on the
engine side. The ground blocks were bolted together with a brass through
bolt. Using this type of approach gives you a single point ground for
everything, and its the first step to keeping ground loops out of your
system. This is where I grounded my fuel pumps to.
Regards, Paul
Message 11
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--> Europa-List message posted by: JEFF ROBERTS <jeff@rmmm.net>
HI All,
I remember this was discussed before, but to know resolution as I
recall. I Have been fighting an RF problem with my I-Com radio. The RF
is obviously getting into the ground as even the trim LED's are
effected. I have a Stratomaster engine monitor from MGL that seams to
work great until I hit the push to talk button. It then goes black and
the trim and Navaid LED's go crazy as well. I have a Bob Archer antenna
in the tail and the radio sounds clear and transmits well. When tested
with any other antenna the same thing occurs. The power to the antenna
is about 7 watts and there was only about a half a watt or less coming
back on the shield when tested. I made sure some time ago that the com
RG cable to the antenna was isolated from any other cables. We have
checked, and all grounds are good on the radio. I have been told to
install some ferrite RF suppressors on the ground and output of the
transmitter and to place them on the ground and power going into the
engine monitor. Before I order these have others run into this and have
you determined the cause and solution? Any Ideas are very welcome as I
have been scratching my head for a week!
Thanks in advance,
Jeff Roberts
A258 - N128LJ
Waiting inspection 1st week in March.
Message 12
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--> Europa-List message posted by: "Paul McAllister" <paul.mcallister@qia.net>
Jeff,
I have a Bob Archer antenna in the tail of my Europa. My trim control &
Navaids go nuts when I transmit and I haven't ever solved the problem. My
SWR is spot on, and the I never have a problem being heard, so the
transmitter is working well.
I am about to go down the ferrite bead route as well, I would be interested
to know how you get on.
Paul
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of JEFF ROBERTS
Sent: Sunday, February 12, 2006 6:43 PM
Subject: Europa-List: RF Problem
--> Europa-List message posted by: JEFF ROBERTS <jeff@rmmm.net>
HI All,
I remember this was discussed before, but to know resolution as I
recall. I Have been fighting an RF problem with my I-Com radio. The RF
is obviously getting into the ground as even the trim LED's are
effected. I have a Stratomaster engine monitor from MGL that seams to
work great until I hit the push to talk button. It then goes black and
the trim and Navaid LED's go crazy as well. I have a Bob Archer antenna
in the tail and the radio sounds clear and transmits well. When tested
with any other antenna the same thing occurs. The power to the antenna
is about 7 watts and there was only about a half a watt or less coming
back on the shield when tested. I made sure some time ago that the com
RG cable to the antenna was isolated from any other cables. We have
checked, and all grounds are good on the radio. I have been told to
install some ferrite RF suppressors on the ground and output of the
transmitter and to place them on the ground and power going into the
engine monitor. Before I order these have others run into this and have
you determined the cause and solution? Any Ideas are very welcome as I
have been scratching my head for a week!
Thanks in advance,
Jeff Roberts
A258 - N128LJ
Waiting inspection 1st week in March.
Message 13
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--> Europa-List message posted by: SPurpura@aol.com
DOES YOUR RADIO SHARE A COMMON GROUND OR HAVE ITS OWN.
Message 14
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--> Europa-List message posted by: "Cliff Shaw" <flyinggpa@comcast.net>
>DOES YOUR RADIO SHARE A COMMON GROUND OR HAVE ITS OWN.
I was thinking the same thing. The Navaid is having a voltage problem. Make sure
the radio has "lots" of wire on the power side. My BENDIX/KING called for two
# 18 wires on both the + and - side. I think "your problem" is what they
were trying to avoid. It never hurts to have to much wire size. (make it bigger)
Message 15
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--> Europa-List message posted by: "Fred Fillinger" <n3eu@comcast.net>
> I was thinking the same thing. Make sure the radio has
"lots" of wire
> on the power side. My BENDIX/KING called for two # 18
wires
> on both the + and - side. I think "your problem" is
what they were
> trying to avoid. It never hurts to have to much wire size.
(make it bigger)
>
Two wires for +14V IN and GND are for redundancy. Rather
common in avionics boxes. I'm afraid lack thereof will not
solve the orig complaint. In plastic airplanes, the
radiated field is a strong, vigorous one, easily affecting
other electrical items. In aluminum planes, those affected
items are significantly shielded by the airframe. I know
this from me little handy field strength meter, while
xmitting, with the meter inside my aluminum plane, vs.
sticking it out the window in better line-of-sight from the
xmitting antenna. It's needle can peg with a resounding
click!
I'd first try the ferrite suppressors to trap the EMI
radiated to wiring of affected devices. Those things abound
everywhere these days from wall-brick "switching power
supplies" to charge the battery in consumer devices, through
those now found on the RF cable feeding digital, high-def TV
sets or digital cable boxes.
Reg,
Fred F.
Message 16
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--> Europa-List message posted by: JEFF ROBERTS <jeff@rmmm.net>
Paul,
I'm going to remove the panel and have the local avionics shop that
wired it install the ferrite beads where I mentioned. As soon as I
reinstall it I'll let you know. I guess I can live with it to but I'd
rather fix it now if possible.
Thank you all for your comments.
Regards,
Jeff
A258 - N128LJ
Waiting inspection 1st week in March
On Feb 12, 2006, at 7:15 PM, Paul McAllister wrote:
> --> Europa-List message posted by: "Paul McAllister"
> <paul.mcallister@qia.net>
>
> Jeff,
>
> I have a Bob Archer antenna in the tail of my Europa. My trim control
> &
> Navaids go nuts when I transmit and I haven't ever solved the problem.
> My
> SWR is spot on, and the I never have a problem being heard, so the
> transmitter is working well.
>
> I am about to go down the ferrite bead route as well, I would be
> interested
> to know how you get on.
>
> Paul
>
> -----Original Message-----
> From: owner-europa-list-server@matronics.com
> [mailto:owner-europa-list-server@matronics.com]On Behalf Of JEFF
> ROBERTS
> Sent: Sunday, February 12, 2006 6:43 PM
> To: europa-list@matronics.com
> Subject: Europa-List: RF Problem
>
>
> --> Europa-List message posted by: JEFF ROBERTS <jeff@rmmm.net>
>
> HI All,
> I remember this was discussed before, but to know resolution as I
> recall. I Have been fighting an RF problem with my I-Com radio. The RF
> is obviously getting into the ground as even the trim LED's are
> effected. I have a Stratomaster engine monitor from MGL that seams to
> work great until I hit the push to talk button. It then goes black and
> the trim and Navaid LED's go crazy as well. I have a Bob Archer antenna
> in the tail and the radio sounds clear and transmits well. When tested
> with any other antenna the same thing occurs. The power to the antenna
> is about 7 watts and there was only about a half a watt or less coming
> back on the shield when tested. I made sure some time ago that the com
> RG cable to the antenna was isolated from any other cables. We have
> checked, and all grounds are good on the radio. I have been told to
> install some ferrite RF suppressors on the ground and output of the
> transmitter and to place them on the ground and power going into the
> engine monitor. Before I order these have others run into this and have
> you determined the cause and solution? Any Ideas are very welcome as I
> have been scratching my head for a week!
>
> Thanks in advance,
> Jeff Roberts
> A258 - N128LJ
> Waiting inspection 1st week in March.
>
>
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