Today's Message Index:
----------------------
1. 02:48 AM - Re: Skymap GPS (Paul Atkinson)
2. 05:20 AM - Re: Am I lucky or what? (Kingsley Hurst)
3. 05:20 AM - Re: Am I lucky or what? (Kingsley Hurst)
4. 06:43 AM - Rotax 912 UL for Sale (george.mueller@aurora.org)
5. 11:37 AM - 3 phase 115V AC 400Hz light weight power supply (Frans Veldman)
6. 11:50 AM - Parting out Europa tri gear with 914 engine (Paul Boulet)
7. 12:06 PM - software (Paul Stewart)
8. 12:06 PM - Re: U2 just a big Europa? (Terry Seaver (terrys))
9. 12:06 PM - Re: 3 phase 115V AC 400Hz light weight power supply (G-IANI)
10. 12:18 PM - Re: 3 phase 115V AC 400Hz light weight power supply (rparigor@suffolk.lib.ny.us)
11. 12:49 PM - Re: 3 phase 115V AC 400Hz light weight power supply (Frans Veldman)
12. 12:59 PM - Re: 3 phase 115V AC 400Hz light weight power supply (Fred Klein)
13. 01:04 PM - Re: 3 phase 115V AC 400Hz light weight power supply (Frans Veldman)
14. 01:04 PM - Fw: 3 phase 115V AC 400Hz light weight power supply (Fred Klein)
15. 01:05 PM - Re: 3 phase 115V AC 400Hz light weight power supply (DuaneFamly@aol.com)
16. 01:34 PM - Re: 3 phase 115V AC 400Hz light weight power supply (William Daniell)
17. 02:11 PM - Re: Flap position, Flight testing (ALAN YERLY)
18. 02:49 PM - Re: Intercooler hoses (D Wysong)
19. 03:05 PM - Re: 3 phase 115V AC 400Hz light weight power supply (ALAN YERLY)
20. 04:02 PM - Re: 3 phase 115V AC 400Hz light weight power supply (Frans Veldman)
21. 04:07 PM - Re: Re: Intercooler hoses (Robert C Harrison)
22. 04:50 PM - Re: 3 phase 115V AC 400Hz light weight power supply (Kevin Klinefelter)
23. 06:43 PM - LED Landing Lights (CHUCK RHOADS)
24. 08:35 PM - Re: 3 phase 115V AC 400Hz light weight power supply (Paul McAllister)
Message 1
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Mike
Even if you did have shares in the company I still appreciate the
information. Thanks
Paul Atkinson
Do not archive
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Mike Parkin
Sent: 08 March 2009 22:30
Subject: Europa-List: Skymap GPS
To all the UK readers........
For those who have not received their letter, Skyforce are trying to
update
their owners database and as an incentive are offering an updated Skymap
2/3
and KMD 150 database at the discounted price of =A370 (seventy pounds)
including VAT and postage. Might be of interest to some
users...........
---- and no, I don=92t have shares in the company.
Skyforce in the UK tel: +44 (0)1243 783763
Offer ends on 31st March 2009
Regards,
Mike
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Subject: | Re: Am I lucky or what? |
Bob Borger said
> You are getting serious here! If you aren't careful, you'll be flying
that thing.
How I hope you are correct Bob !
Thanks for the encouragement .
Kingsley
do not archive
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Subject: | Re: Am I lucky or what? |
> what have you done on the fuselage where it is met
> by the Wing Root, is it an optical illusion or have you moulded an
> extrusion to meet the wing root?
Hello Steve,
I firstly laid up my upper and lower fairings from the fuselage to the wings
bonding the two together.
I then cut the lay-ups with a hacksaw blade so that half of a fairing was
left on the fuse and the other half on the wing. Then sanded the gaps so
that the upper gap was almost 3 mm and the under surface gap almost 2 mm.
These lay-ups were made over blue foam so I then laid up the inside parts of
the foam and after that, the two semi mating surfaces.
The end result is a gap of 2 mm on top and 1 mm underneath. I intend to put
Door and Window Weather Strip on one of the mating surfaces. Only testing
will tell but I hope this should suffice as a seal for local flying. If I
want a perfect seal for X country flying, I will do the old glider trick of
running some PVC tape right around from trailing edge to trailing edge.
Maybe, I will have to use the tape all the time, don't know yet.
Have attached some photos which should explain better than the words above.
The dates on these photos are embarrassing.
Note that the gaps you see in these photos are a little wider than the
finished product because all the glass surfaces have now been filled for
painting which is my next job.
Best regards
Kingsley
Message 4
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Subject: | Rotax 912 UL for Sale |
In case anyone has a need, I have a Rotax 912 UL with 60 hours TTSN along
with a Woodcomp Klassic 68" three blade prop 30 hours TTSN for sale on
Barnstormers for $14,900. The engine is currently being gone over by an
authorized Rotax dealer to make sure it is perfect. 414-647-3134 if you
are interested. I am selling because I need to upgrade to a 912S because I
am putting floats on my airplane.
George in Milwaukee
Zenith 701 60 Hours Flying
Message 5
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Subject: | 3 phase 115V AC 400Hz light weight power supply |
In my Europa, I would like to have an attitude indicator. Not for
instrument flying, but just "in case".
As I don't have a vacuum system, but dual alternators instead, the
attitude indicator had to be electrical.
These electrical attitude indicators are available for various prices,
but almost all of them fall into the "very expensive" range.
I decided to buy a Falcon 12 Volt gyro, to see if this would be usable.
Well, it worked initially, with a lot of noise, but apparently the
carefull removal and re-installation of the entire instrument panel was
enough to cause the instrument to get damaged. I will probably get this
thing repaired, but I don't want to have it in my ship anymore. (Anyone
interested in it?)
On the other end of the "robustness scale" are the surplus attitude
indicators. I bought a unit for scrap price from Ebay, and started
experimenting. The problem is that these units need 3 phase 115 Volt AC
400Hz, making them very unpopular (but also very affordable). Some
people built inverters, but with the three required transformers they
used to weigh as much as the instrument itself.
I decided to design and build a switching power supply myself. After
some testing and burning up some components, I now have something that
works, weighing less than 60 grams (2 oz), (excluding its housing), very
small, and efficient with electricity. (And powerfull, with just 12 Volt
input it can feed a normal 40 Watt houshold light bulb without problems).
I connected it to my Ebay-scrap-gyro from the 60's, and to my delight
the instrument started up right away. Low noise, and the horizon bar
erects and stabilises precisely where it needs to be. I suspect that
this unit has seen some more serious "mishandling" than my new Falcon
gyro, but despites it sounds and appears like it can service for many
more years to come.
Apart from having an affordable attitude indicator, for me it has some
additional value to have something in front of me that once serviced a
DC-3 or a fighter in the vietnam war, at least more sentimental value
than something that was made in China.
If anyone else is interested in using 3-phase, 115V AC 400hz attitude
indicators (or other instruments), I can see if I can make a few more of
these inverters, or assemble a components package for one who wants to
try to build it himself.
And just to be sure: I am aware of the existence of glass panels with
"attitude indicators" built in. ;-) Telling me that this is a better
solution is the same as me telling you that you'd better just buy a nice
factory airplane instead of building your own. ;-) I just love to fiddle
with all these instruments and electronics and I see less fun in
connecting a single huge screen that "has it all".
--
Frans Veldman
Message 6
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Subject: | Parting out Europa tri gear with 914 engine |
Hi George; Hi all;
I''ve decided to dismantle and part out my tri gear 914 powered with consta
nt speed prop.
If anyone has interest in the parts please contact me off list.- The moto
r has 25 hours on it
Paul Boulet, N914PB
Malibu, CA
phone: 310-963-0210
email: PossibleToDo@yahoo.com-
--- On Mon, 3/9/09, george.mueller@aurora.org <george.mueller@aurora.org> w
rote:
From: george.mueller@aurora.org <george.mueller@aurora.org>
Subject: Europa-List: Rotax 912 UL for Sale
In case anyone has a need, I have a Rotax 912 UL with 60 hours TTSN along w
ith a Woodcomp Klassic 68" three blade prop 30 hours TTSN for sale on Barns
tormers for $14,900. -The engine is currently being gone over by an autho
rized Rotax dealer to make sure it is perfect. -414-647-3134 if you are i
nterested. I am selling because I need to upgrade to a 912S because I am pu
tting floats on my airplane.
George in Milwaukee
Zenith 701 60 Hours Flying
Message 7
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Anyone know where I can get a copy of the throttle setting software
for the 914?
Paul
G-GIDY
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Subject: | U2 just a big Europa? |
Hi Fred,
I am happy with the long wings in most respects, we get almost 26:1
glide ratio and decent minimum sink. The handling is pleasantly light
compared to the Katana Extreme MG I trained in. We are getting a 130
KTAS cruise at 5.3 gph, which is not a lot less than with the short
wings. My only complaint is with the air brakes, they just don't have
enough authority.
regards,
Terry
________________________________
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Fred Klein
Sent: Friday, March 06, 2009 2:45 PM
Subject: Re: Europa-List: U2 just a big Europa?
---- "Terry Seaver (terrys)" <terrys@cisco.com> wrote:
Europa may indeed just be a mini-U2.
Jeesus Terry...I have newfound respect for all the sailplane guys...
And how do you like your long wings?
Fred
A194
--
This message has been scanned for viruses and
dangerous content by MailScanner <http://www.mailscanner.info/> , and is
believed to be clean.
Message 9
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Subject: | 3 phase 115V AC 400Hz light weight power supply |
Frans
Did you think about the TruTrak Pilot 1 (or 2). This would do what you want
and of course you could have autopilot if you want to spend the additional
$1000 per servo. Mine has been reliable.
Ian Rickard G-IANI XS Trigear, 200 hours
Europa Club Mods Rep (Trigear)
e-mail mods@europaclub.org.uk
or direct g-iani@ntlworld.com
Message 10
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Subject: | Re: 3 phase 115V AC 400Hz light weight power supply |
Hi Frans
Sounds like great fun making a cheap 400MHz attitude indicator work on
Europa power.
Just a word of caution, might be worth it to have
instrument gone over and rebuilt.
I owned a 1948 Cessna 170
with a venturi driven gyro that worked OK as long as you had flying speed
for 19 years. There was only one time I needed that instrument, taking off
from Lebnon NH at night with a high overcast. It was the blackest night I
ever flew in. At 200 feet my gyro said I was about to turn upside down. I
knew my aeroplane, it was trimmed and let go of the controls. It was about
35 F and the bearings in the gyro descided to slightlybind up at
that precise moment.
I took it apart and adjusted and burnished
the bearings with limited sucess. It needed new bushngs and shaft and tip
bearings.
If your unit has gyro bushings/bearings anything like
mine did, replace them all or have them refinished. It wasn't all that
expensive considering.
Ron Parigoris
Message 11
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Subject: | Re: 3 phase 115V AC 400Hz light weight power supply |
G-IANI wrote:
> Did you think about the TruTrak Pilot 1 (or 2).
We did, for a long time. But we rejected it finally because it is not a
real gyro (if I remember correctly it would show wings level while you
are not flying coordinated and with one wing low, and it has to rely on
the static port to indicate a pitch angle, reducing redundancy), and to
be honest, on the pictures it looks a bit like a toy (but I have never
seen one in real life) while it is still quite expensive.
As an autopilot I already have the trio avionics autopilot, and it
double duties as a (gravity based, GPS coupled) turn coordinator. That's
one of the reasons I want to have a real attitude indicator, one that is
independent from GPS, static port and other sensors/inputs that are
shared by other instruments.
This redundancy is probably overkill as I'm not intentionally going to
fly in IMC, but it eases my mind to know that with for instance a static
port blockage, not all my instruments will heartily agree with each
other that I'm really holding altitude, while I'm in fact plunging down.
We considered various options for a gyro-less setup, but every time we
found reasons to come back to the good old gyro.
--
Frans Veldman
Message 12
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Subject: | Re: 3 phase 115V AC 400Hz light weight power supply |
What's the catch with the solid state gyro listed at only $165 at Acft
Spr.
http://www.aircraftspruce.com/catalog/inpages/1105706.php
Is this just a cheep toy or truly a gamechanger?
Fred
A194
Message 13
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Subject: | Re: 3 phase 115V AC 400Hz light weight power supply |
rparigor@suffolk.lib.ny.us wrote:
> Sounds like great fun making a cheap 400MHz attitude indicator work on
> Europa power.
>
> Just a word of caution, might be worth it to have instrument gone over
> and rebuilt.
That's what I intend to do anyway (if I can find a company still having
the parts and experience to do it properly). If the last owner has
dropped it, it is well possible that the instrument still works ok, but
the dents in the gears will make it fail rapidly.
But once it is overhauled, it is a top quality and very reliable instrument.
Thanks for sharing you thoughts.
--
Frans Veldman
Message 14
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Subject: | 3 phase 115V AC 400Hz light weight power supply |
> What's the catch with the solid state gyro listed at only $165 at
> Acft Spr.
>
> http://www.aircraftspruce.com/catalog/inpages/1105706.php
>
> Is this just a cheep toy or truly a gamechanger?
Aha...the catch is a requirement for a $950 sensor package!
...things to good to be true...rarely are...
Sorry guys,
Fred
Message 15
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Subject: | Re: 3 phase 115V AC 400Hz light weight power supply |
In a message dated 3/9/2009 1:00:27 P.M. Pacific Daylight Time,
fklein@orcasonline.com writes:
What's the catch with the solid state gyro listed at only $165 at Acft
Spr.
Please note that it says "Sensors are Required" ......and the sensors are
$240 and $950. Add that to the price of the indicator and it puts it back into
the $$$ category.
Mike Duane A207A
Redding, California
XS Conventional Gear
Jabiru 3300A
Sensenich R64Z N
Ground Adjustable Prop
**************Need a job? Find employment help in your area.
(http://yellowpages.aol.com/search?query=employment_agencies&ncid=emlcntusyelp00000005)
Message 16
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Subject: | 3 phase 115V AC 400Hz light weight power supply |
http://www.pcflightsystems.com/
I have one of these in my Zenith clone - unless things go horribly wrong I
certainly don't intend fly in conditions where I might need it.
Having said that it works well and provides a completely independent AI
which runs off its own power.
Will
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Fred Klein
Sent: Monday, March 09, 2009 15:02
Subject: Fwd: Europa-List: 3 phase 115V AC 400Hz light weight power supply
What's the catch with the solid state gyro listed at only $165 at Acft Spr.
http://www.aircraftspruce.com/catalog/inpages/1105706.php
Is this just a cheep toy or truly a gamechanger?
Aha...the catch is a requirement for a $950 sensor package!
...things to good to be true...rarely are...
Sorry guys,
Fred
Message 17
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Subject: | Re: Flap position, Flight testing |
Kevin,
After flight testing a number of these aircraft the advice/concerns of
all who have answered are sound.
My tips for in house use are pasted below:
This presupposes that you have accomplished the Annex E properly,
checked the engine and systems for safety etc.
Preflight Rules before you fly:
Rule 1. Check the incidence with a digital level at the root and the
tip. Should be within .1 degree. Some of the tips are off a little.
Rule 2. If a mono, support the aircraft and retract gear and flaps, if
tri-gear, retract the flaps. Sit behind the aircraft on centerline and
look at the trailing edge. Move your head up and down until you can see
the shadow line of the lower surface. Look left and right. The shadow
line should be even on both sides. The mean aerodynamic chord is near
the flap/aileron junction. Your outriggers will spoil your view, but at
that point the left and right wing shadows should be dead even. This
checks the wing is square and the incidence is correct. Some flaps have
a little play and will droop under gravity, but fly up when airborne.
Use a stick with very light pressure to hold them in place.
Note: Why use your eye, because the eye is a superb level and square
indicator, not suspect of measuring methods.
Rule 3. Check the tail surfaces are square to the wing and the rear
fuselage is not twisted. Both stabs are exactly at the same incidence.
Two degrees off on the stabs is like 1/8 aileron deflection.
Rule 4. Check the engine offset is per the manual at right thrust 1
1/16 inch offset to the firewall.
Rule 5. Check flap hinge coves and wheel pants for square. Remove if
not aligned properly.
>From my experience, the left roll is due to pilot weight. Higher thrust
engines and CS props will add P factor even at an alpha of 2-3 degrees.
Most planes need slight right rudder. This is easily trimmed by
shortening the right rudder spring one or two links or putting in a
cable shortener as depicted in the manual on the one side. (Trim tabs
are ugly when stuck on a beautiful airplane and emphasize that there is
a rigging error.) So preserve your ego and let the spring do the work
for you. Yes I designed a rudder trim, and no I won't tell you but you
can figure it out from above.
Any roll with a drooped flap in flight needs to be compensated for, so
jumping ahead:
Roll trimming during flight test:
Any roll corrections need to be done with the ball perfectly centered.
Most EFIS ball indications are not as good as a good old fashioned ball
and a distant cloud.
Center the ball first.
Move aileron to stop the roll and re-center the ball. Note the aileron
deflection by checking stick free with deflection required. Land.
Note: By this I mean hold the stick for level flight, then release and
note the movement of the stick. Reapply the stick deflection and note
how much deflection stops the roll...Look outside too.
Provided the aircraft has even stabs, proper incidence and the flaps are
even, proceed to:
Adjust the flap which is up too far with the set screw in the baggage
bay (Custom Flight Mod) or by adding a shim to the back of the baggage
bay and the flap tube through the hole in the side of the aircraft with
thin wedges to shim the flaps 1/32nd of an inch to correct roll. Right
flap down rolls right. Go fly. When roll is cured you may need to
adjust the aileron to match. But wait, most likely, then it needs the
flap to be trimmed again for less deflection due to the aileron
trimming, or because you made the airplane with very little friction in
your roll system, you may see both ailerons now evenly up or down as
appropriate. Go fly again. Test trim, then re-do stall series.
If the wing tip is off, and/or an aileron tab is needed, re-contour the
aileron. To do this, sand one inch back on the lower trailing edge of
the aileron which needs to fly up and add filler (Evercoat Rage works
great) to make a wedge that tapers from zero to 1/16 of an inch along
the full span. Think of it as a long wedge of nearly no weight. Go
fly. Land and sand, then go fly until it is trimmed. Paint as
required. Makes a virtually invisible aileron trim tab and the
thickness is very difficult for the untrained observer to catch.
Enjoy making your plane perfect, it is worth the effort. I never get a
chance to do my own.
Bud Yerly
Custom Flight Creations
----- Original Message -----
From: Kevin Klinefelter<mailto:kevann@gotsky.com>
To: europa-list@matronics.com<mailto:europa-list@matronics.com>
Sent: Friday, March 06, 2009 9:04 AM
Subject: Re: Europa-List: Flap position, Flight testing
Jim, In cruise I have to hold a little left rudder...
Kevin
----- Original Message -----
From: Jim Brown<mailto:acrojim7534@YAHOO.COM>
To: europa-list@matronics.com<mailto:europa-list@matronics.com>
Sent: Friday, March 06, 2009 4:21 AM
Subject: Re: Europa-List: Flap position, Flight testing
Kevin
I would think that given the left flap is lower than the right
flap that the plane would be turning right. Given that the left flap
will have more pressure on it than the right flap.
I would suggest that on the next flight check the turn and
bank ball. and see if its setting to the right. Try centering the ball
with rudder and see if that helps.
Jim Brown
--- On Thu, 3/5/09, Kevin Klinefelter <kevann@gotsky.com>
wrote:
From: Kevin Klinefelter <kevann@gotsky.com>
Subject: Europa-List: Flap position, Flight testing
To: europa-list@matronics.com
Date: Thursday, March 5, 2009, 11:38 PM
Hi All,
Flight testing of 914 powered monowheel N211KA is going well
(29 hours).I have a flap position question for those who have been
there.
The aircraft has an irritating left turn in it when flown
solo and slight left turn with two up. When trimmed out cruising
straight and level the ailerons are close to even with the wing tips and
the left flap is noticeably lower relative to it's aileron than the
right side, which is almost even with the aileron. I think if I can rig
the left flap up even with the aileron it will help cure the left
turning problem and be less drag.
I thought I might get a new flap hinge arm (FL16) on the
left and with the aircraft supported and flaps up in the desired
position I could drill new holes thru the lugs on the tourqe tube so
the left flap retacted position matches the right.
Will this work or is there a better way?
Thanks, Kevin... flying and grinning...
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Message 18
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Subject: | Re: Intercooler hoses |
Frans,
We used silicone elbows from http://www.turbohoses.com/
The claim to ship internationally, too.
D
Message 19
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Subject: | Re: 3 phase 115V AC 400Hz light weight power supply |
Frans,
The Tru Track ADI Pilot Attitude indicator is $1000 and comes with
internal compass and ball which is great. Two instruments in one and
backed by the company. Add a servo in the ADI Pilot I and you have
autopilot or (wing leveler) that interfaces with any Garmin product and
most others.
You get what you pay for. Time is money.
Had a Falcon, had a Ray Allen, they all fail over time. Tru Track is
solid state reliable, light and uses less power.
I wish I was the dealer for them.
Bud Yerly
Custom Flight Creations
----- Original Message -----
From: Frans Veldman<mailto:frans@paardnatuurlijk.nl>
To: europa-list@matronics.com<mailto:europa-list@matronics.com>
Sent: Monday, March 09, 2009 2:34 PM
Subject: Europa-List: 3 phase 115V AC 400Hz light weight power supply
<frans@paardnatuurlijk.nl<mailto:frans@paardnatuurlijk.nl>>
In my Europa, I would like to have an attitude indicator. Not for
instrument flying, but just "in case".
As I don't have a vacuum system, but dual alternators instead, the
attitude indicator had to be electrical.
These electrical attitude indicators are available for various prices,
but almost all of them fall into the "very expensive" range.
I decided to buy a Falcon 12 Volt gyro, to see if this would be
usable.
Well, it worked initially, with a lot of noise, but apparently the
carefull removal and re-installation of the entire instrument panel
was
enough to cause the instrument to get damaged. I will probably get
this
thing repaired, but I don't want to have it in my ship anymore.
(Anyone
interested in it?)
On the other end of the "robustness scale" are the surplus attitude
indicators. I bought a unit for scrap price from Ebay, and started
experimenting. The problem is that these units need 3 phase 115 Volt
AC
400Hz, making them very unpopular (but also very affordable). Some
people built inverters, but with the three required transformers they
used to weigh as much as the instrument itself.
I decided to design and build a switching power supply myself. After
some testing and burning up some components, I now have something that
works, weighing less than 60 grams (2 oz), (excluding its housing),
very
small, and efficient with electricity. (And powerfull, with just 12
Volt
input it can feed a normal 40 Watt houshold light bulb without
problems).
I connected it to my Ebay-scrap-gyro from the 60's, and to my delight
the instrument started up right away. Low noise, and the horizon bar
erects and stabilises precisely where it needs to be. I suspect that
this unit has seen some more serious "mishandling" than my new Falcon
gyro, but despites it sounds and appears like it can service for many
more years to come.
Apart from having an affordable attitude indicator, for me it has some
additional value to have something in front of me that once serviced a
DC-3 or a fighter in the vietnam war, at least more sentimental value
than something that was made in China.
If anyone else is interested in using 3-phase, 115V AC 400hz attitude
indicators (or other instruments), I can see if I can make a few more
of
these inverters, or assemble a components package for one who wants to
try to build it himself.
And just to be sure: I am aware of the existence of glass panels with
"attitude indicators" built in. ;-) Telling me that this is a better
solution is the same as me telling you that you'd better just buy a
nice
factory airplane instead of building your own. ;-) I just love to
fiddle
with all these instruments and electronics and I see less fun in
connecting a single huge screen that "has it all".
--
Frans Veldman
http://www.matronics.com/Navigator?Europa-List<http://www.matronics.com/N
avigator?Europa-List>
http://www.matronics.com/contribution<http://www.matronics.com/contributi
on>
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Subject: | Re: 3 phase 115V AC 400Hz light weight power supply |
ALAN YERLY wrote:
> Frans,
> The Tru Track ADI Pilot Attitude indicator is $1000 and comes with
> internal compass and ball which is great.
As far as I know it is not a compass but a GPS heading indicator. I
alread have a GPS, a compass is these days meant as a backup for the GPS
(in case of satellite failure). A "compass" based on GPS is worthless as
it offers almost no extra redundancy.
And as I mentioned before, solid state gyro's still have so much drift
that they need contineous compensation. Solid state gyro's are good in
detecting sudden changes, but they can't detect whether a situation
persists. So they need compensation from GPS ("hey we are still turning,
so we are most likely still banking) and from the static port ("pressure
is still decreasing, so let's continue to display a pitch-up, that would
probably be right"). These things are thus not showing the actual
situation, but a *derived* situation. Which will probably be right most
of the time, but offers you no additional information and is worthless
in a case of emergency: Loose your static port for some reason (icing?),
and you will loose your "pitch indicator" as well. Loose the GPS signal
for some reason, and the "compass" is gone too. Bank your airplane
without making a turn, and the indicator will try to convince you that
the wings are really, really level. (Don;t believe me? Try it next time
yourself. Of course you won't intentionally maintain heading with a
banked plane in VMC (cross controlled), but it could easily happen in
IMC, and that's why we have this attitude indicator in the first place,
right?). Problem with all this is lack of redundancy, and it is the
redundancy why I want to have an attitude indicator and compass in the
first place.
> Add a servo in the ADI Pilot I and you have
> autopilot or (wing leveler) that interfaces with any Garmin product and
> most others.
Here the same story. One of the reasons I have an auto-pilot is if I
inadvertently fly into IMC. If I suspect that my attitude indicator is
failing, I will let the autopilot take over. Or the other way around.
Unless.... the autopilot is linked to the same failing attitude
indicator. Loose that single one instrument, and all your options are gone.
> Had a Falcon, had a Ray Allen, they all fail over time. Tru Track is
> solid state reliable, light and uses less power.
It certainly has some advantages. But it is still not an equal
substitute for a real gyro.
--
Frans Veldman
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Subject: | Re: Intercooler hoses |
Hi! D
It is my belief that the turbo flange will be too hot (especially after
shut down) for silicone hoses. Silicone is OK for water cooling system
only? However I suggest you check this out don't rely on my authority.
Regards
Bob Harrison G-PTAG
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of D Wysong
Sent: 09 March 2009 21:46
Subject: Europa-List: Re: Intercooler hoses
Frans,
We used silicone elbows from http://www.turbohoses.com/
The claim to ship internationally, too.
D
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Subject: | Re: 3 phase 115V AC 400Hz light weight power supply |
The trutrak has built in magnetometer for backup source of heading in case
of GPS signal loss.
Kevin
----- Original Message -----
From: "Frans Veldman" <frans@paardnatuurlijk.nl>
Sent: Monday, March 09, 2009 3:58 PM
Subject: Re: Europa-List: 3 phase 115V AC 400Hz light weight power supply
> <frans@paardnatuurlijk.nl>
>
> ALAN YERLY wrote:
>> Frans,
>> The Tru Track ADI Pilot Attitude indicator is $1000 and comes with
>> internal compass and ball which is great.
>
> As far as I know it is not a compass but a GPS heading indicator. I
> alread have a GPS, a compass is these days meant as a backup for the GPS
> (in case of satellite failure). A "compass" based on GPS is worthless as
> it offers almost no extra redundancy.
> And as I mentioned before, solid state gyro's still have so much drift
> that they need contineous compensation. Solid state gyro's are good in
> detecting sudden changes, but they can't detect whether a situation
> persists. So they need compensation from GPS ("hey we are still turning,
> so we are most likely still banking) and from the static port ("pressure
> is still decreasing, so let's continue to display a pitch-up, that would
> probably be right"). These things are thus not showing the actual
> situation, but a *derived* situation. Which will probably be right most
> of the time, but offers you no additional information and is worthless
> in a case of emergency: Loose your static port for some reason (icing?),
> and you will loose your "pitch indicator" as well. Loose the GPS signal
> for some reason, and the "compass" is gone too. Bank your airplane
> without making a turn, and the indicator will try to convince you that
> the wings are really, really level. (Don;t believe me? Try it next time
> yourself. Of course you won't intentionally maintain heading with a
> banked plane in VMC (cross controlled), but it could easily happen in
> IMC, and that's why we have this attitude indicator in the first place,
> right?). Problem with all this is lack of redundancy, and it is the
> redundancy why I want to have an attitude indicator and compass in the
> first place.
>
>> Add a servo in the ADI Pilot I and you have
>> autopilot or (wing leveler) that interfaces with any Garmin product and
>> most others.
>
> Here the same story. One of the reasons I have an auto-pilot is if I
> inadvertently fly into IMC. If I suspect that my attitude indicator is
> failing, I will let the autopilot take over. Or the other way around.
> Unless.... the autopilot is linked to the same failing attitude
> indicator. Loose that single one instrument, and all your options are
> gone.
>
>> Had a Falcon, had a Ray Allen, they all fail over time. Tru Track is
>> solid state reliable, light and uses less power.
>
> It certainly has some advantages. But it is still not an equal
> substitute for a real gyro.
>
> --
> Frans Veldman
>
>
>
Message 23
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Subject: | LED Landing Lights |
=0A-The weather finally got warm enough that I could spend some time work
ing on my LED landing lights from J.C. Whitney and try to solve the severe
static problems during transmitting.- After talking with some friends and
a electrical engineer I decided to try the old method that we used 40 year
s ago on car radios.- I went to the local auto parts store, Advance Auto,
and bought their radio-noise suppressor, less than $6.00.- It works wo
nderfully well.-It apparently contains a capacitor and an inductor.=0A=0A
For the purpose that I plan to use the lights, to be seen by other aircraft
during landing, I am very happy with the results.- At my present airport
night landings, is in my opinion are just for those with a death wish,-
three times I have been at my hanger at night and two time there were deer
within 200 feet of the hanger that I had to slow the car down to wait until
they got off the hanger access road.=0A=0AHave a wonderful summer,=0AChuck
Rhoads=0AA100- 115hours=0A=0A=0A
Message 24
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Subject: | Re: 3 phase 115V AC 400Hz light weight power supply |
Hi Kevin & all,
The Trutrack A/P that I have does have an internal magnetometer as well as
taking a GPS track. Unfortunately the 2.25 ADI I have does not, it only has
GPS track. I installed the ADI as a back up to my glass, it gives me GPS
track, horizon and VSI. Many people think due to the nature of the display
that it is pitch, but it isn't. The ADI is far from perfect, but I found
that I could fly an approach with it under the hood, so I guess it was good
enough. If might be a different story in turbulence and pelting rain.
With that said, given that I wanted some type of completely separate device
to back my glass up it was the best choice available at the time. Although
it would have been cheaper I didn't really want a pair of glass panels with
separate ADHS systems because I wanted to rule out the possibility of the
same software bug occurring on both devices ( yes that is paranoia at is
best ), I guess I have just written too much software in my past life to be
that trusting. Also, to give good redundancy I would have needed dual pitot
static systems as well.
In summary, I really like the approach that Frans has taken, it simple, and
proven. Sure, like everything else there are a bunch of things that could
go wrong, but part of the exercise of engineering a system for our aircraft
is to assume that something will fail and have something in your panel that
will accommodate this failure.
BTW, Frans, I thought of doing something similar but decided designing a
three phase inverter was too hard, which is a very sad commentary on me
given my past life in Electronic Engineering. Kudos to you !
Cheers, Paul
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