Today's Message Index:
----------------------
1. 12:45 AM - Re: Sticky pre-skinned surfaces (Cripps, David)
2. 02:12 AM - Re: Sticky pre-skinned surfaces (Tony S. Krzyzewski)
3. 05:41 AM - Re: Static Charges and how to avoid them (J R \(Bob\) Gowing)
4. 05:41 AM - Re: Mods needed for glider wings? (J R \(Bob\) Gowing)
5. 06:34 AM - Re: Door latch (Fergus Kyle)
6. 07:55 AM - Re: Door latch (Nigel Charles)
7. 08:59 AM - Re: Static Charges and how to avoid them (Fred Fillinger)
8. 09:22 AM - Re: Static Charges and how to avoid them (Peter Zutrauen)
9. 10:08 AM - Re: Mods needed for glider wings? (Tony S. Krzyzewski)
10. 10:56 AM - Terra radio (Frank Mycroft)
11. 11:12 AM - Re: Static Charges and how to avoid them (Gerry Holland)
12. 11:47 AM - Water Temperature (Gerry Holland)
13. 01:07 PM - Re: Door latch (Ami McFadyean)
14. 02:09 PM - Re: Static Charges and how to avoid them (KARL HEINDL)
15. 02:11 PM - Re: Water Temperature (KARL HEINDL)
16. 03:08 PM - Re: Water Temperature (Gerry Holland)
17. 05:09 PM - Re: Water Temperature (James Nelson)
18. 05:32 PM - Re: Static Charges and how to avoid them (J R \(Bob\) Gowing)
19. 05:32 PM - Re: Mods needed for glider wings? (J R \(Bob\) Gowing)
20. 06:11 PM - Re: Static Charges and how to avoid them (Fred Fillinger)
21. 08:14 PM - Re: Mods needed for glider wings? (Paul McAllister)
Message 1
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| Subject: | Sticky pre-skinned surfaces |
--> Europa-List message posted by: "Cripps, David" <david.cripps@spsystems.com>
Here at SP Systems we use only disposable nitrile gloves when handling epoxies
- both in bulk during manufacture and when doing trial layups or laminate sanding
operations. Latex does provide epoxy protection but, as you know, some people
are sensitive to latex itself. The nitrile gloves are not quite as stretchy
as the latex, but are pretty durable and not much more expensive (about 12GBP
per box for a single box of 50+). You just need to be disciplined to replace
them if they get torn. Other possibilities are heavier duty versions of the same.
If you're looking for a source of the disposable nitrile gloves in the UK try Marineware in Southampton, UK (02380 330208) or try one of the safety supply mail order places such as Arco for the heavy duty ones.( www.arco.co.uk)
David
-----Original Message-----
From: Jeremy Davey [mailto:jeremycrdavey@btinternet.com]
Subject: RE: Europa-List: Sticky pre-skinned surfaces
--> Europa-List message posted by: "Jeremy Davey" <jeremycrdavey@btinternet.com>
I believe they are not 100% resistant to the epoxy systems - which is why
rubber gloves are recommended for layups. That said, I don't wear latex
gloves for extended periods (they are so easily torn anyway) so slow
permeability to the surface contaminants is not really an issue as they
simply would not have time to diffuse through.
Is anyone out there an expert on latex or chemical protection who can
comment?
Regards,
Jeremy
Jeremy Davey
Europa XS Monowheel 537M G-EZZA
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Paul Sweeting
Subject: RE: Europa-List: Sticky pre-skinned surfaces
--> Europa-List message posted by: Paul Sweeting <Paul.Sweeting@ntl.com>
Wasnt it mentioned latex gloves are permeable to the irritant or is this
just the case for pvc based disposible gloves??
Cheers
Paul.
Paul Sweeting
Europa XS Monowheel 558
-----Original Message-----
From: Jeremy Davey [mailto:jeremycrdavey@btinternet.com]
Subject: RE: Europa-List: Sticky pre-skinned surfaces
--> Europa-List message posted by: "Jeremy Davey"
<jeremycrdavey@btinternet.com>
John,
All my Stage 1 components have this to one extent or other. Indeed, at the
time we went into it in great depth with the factory and SP Systems (who
make the resin). Apparently it is a result of contaminants emerging from the
resin and reacting with water out of the atmosphere (which is exacerbated by
slow hardener being used and tallies with your weather report) and will need
to be cleaned up prior to finishing. It is not of structural significance.
Having said it is not structurally significant, it is worth taking
precautions for the sake of your health when handling these (and all)
layups. I generally wear latex gloves when handling cured layups, or wash my
hands promptly afterwards. I do not want to acquire an allergy for the sake
of a few hundred disposable gloves and a little care.
Regards,
Jeremy
Jeremy Davey
Europa XS Monowheel 537M G-EZZA
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Message 2
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| Subject: | Sticky pre-skinned surfaces |
--> Europa-List message posted by: "Tony S. Krzyzewski" <tonyk@kaon.co.nz>
>> Here at SP Systems we use only disposable nitrile gloves when
handling epoxies
... and just what does SP Systems know about handling resins huh?
Sorry, just couldn't resist that one.
David, thanks. It's great to have a definitive answer on latex gloves
and to know that the 500+ latex gloves I've used so far do provide
protection from Ampreg. I started off using rubber gloves but decided
that life was too short to spend time cleaning them and switched to
latex gloves which just get thrown out at the end.
For really big layups I always wore two pairs as I inevitably ended up
tearing through a layer at an inopportune moment and it's nice having a
backup.
Tony
Message 3
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| Subject: | Re: Static Charges and how to avoid them |
--> Europa-List message posted by: "J R \(Bob\) Gowing" <gowingjr@acr.net.au>
Dale
I have an aluminium surround that fits into an XS plastic filler tube but
have not put in the extended bay and filler etc just yet. I have done no
checking, too busy getting the UC and engine mount into the fuse and then
the rudder pedals.
J R (Bob) Gowing, Kit 324
do not archive
----- Original Message -----
From: "Dale Hetrick" <gdale2@juno.com>
Subject: Re: Europa-List: Static Charges and how to avoid them
> --> Europa-List message posted by: Dale Hetrick <gdale2@juno.com>
>
> Bob,
> You must have gotten one of aluminum filler caps and neck. Mine is
> plastic but looks like aluminum. Did you check for continuity across
> portions of the neck?
> Dale
> Dale
> On Mon, 26 May 2003 22:18:43 +0100 "R.C.Harrison"
> <ptag.dev@ukonline.co.uk> writes:
> > --> Europa-List message posted by: "R.C.Harrison"
> > <ptag.dev@ukonline.co.uk>
> >
> > Hi! Dale,
> > I've presumed they mean the aliminium neck to the filler. My system
> > has
> > always to have the fuel supply pump grounded at the exhaust , I make
> > sure I
> > touch the neck with a damp finger whilst removing the cap and I
> > touch the
> > fuel nozzle on to the neck whilst filling.
> > No problems yet but can't say I've ever found really dry conditions
> > in
> > Europe yet.
> > Regards
> > Bob Harrison G-PTAG
> >
> > -----Original Message-----
> > From: owner-europa-list-server@matronics.com
> > [mailto:owner-europa-list-server@matronics.com]On Behalf Of Dale
> > Hetrick
> > To: europa-list@matronics.com
> > Subject: Re: Europa-List: Static Charges and how to avoid them
> >
> >
> > --> Europa-List message posted by: Dale Hetrick <gdale2@juno.com>
> >
> > All,
> > There seems to be a lot of reliance on grounding the "filler cap"
> > plus
> > other components to create a grounding path. If other "filler caps"
> > are
> > like mine, it's not possible because its plastic, not aluminum as
> > it
> > appears to be.
> > Dale
> > A#140
> > On Sun, 25 May 2003 21:32:40 -0400 Fred Fillinger
> > <fillinger@ameritech.net> writes:
> > > --> Europa-List message posted by: Fred Fillinger
> > > <fillinger@ameritech.net>
> > >
> > > DuaneFamly@aol.com wrote:
> > > > So am I to conclude that there should be two separate
> > electrical
> > > bonds
> > > > in the plane? One for all the regular things that need
> > electrons
> > > to
> > > > operate (lights, engine, instruments, etc.) and a separate one
> > > that
> > > > bonds the various nonoperating parts of the fueling systems to
> > a
> > > > single point that one can attach a ramp ground wire to and the
> > > > container that the fuel is presently in when refueling.
> > >
> > > There is no need for the A/C's electrical system ground be
> > involved,
> > > but
> > > a practical consideration is that airport fueling personnel will
> > > attach
> > > the bonding wire to the exhaust pipe. One need minimally only bond
> > > the
> > > metal filler opening, so I suppose one could placard the filler
> > to
> > > that
> > > effect and provide a means of attaching the clip.
> > >
> > > If by "bonding the various nonoperating parts of the fueling
> > system"
> > >
> > > means other than the filler cap, then I believe that's more
> > > hazardous.
> > > What will happen is that any static accumulating in the vicinity
> > of
> > >
> > > those metal parts will be sent to the filler cap, unnecessarily
> > > raising
> > > its voltage potential. If the filler cap is also earthed in some
> > > way,
> > > then there's no hazard. Even one's body can drain off the charge
> > if
> > > the
> > > conditions are right. However, it's best to leave any static
> > deep
> > > inside the system, and this is the reason that filling an
> > ungrounded
> > >
> > > metal can is more hazardous than a plastic container, where
> > static
> > > charges tend to remain where they accumulate.
> > >
> > > Regards,
> > > Fred F.
> > >
> > >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
>
Message 4
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| Subject: | Re: Mods needed for glider wings? |
--> Europa-List message posted by: "J R \(Bob\) Gowing" <gowingjr@acr.net.au>
I have thought that it would be abit of ajob to get the lift pins in exactly
the same position on the second pair of wings. Anyone done this easily yet?
J R (Bob) Gowing, Classic Kit 327 in Oz
----- Original Message -----
From: <irampil@notes.cc.sunysb.edu>
Subject: Re: Europa-List: Mods needed for glider wings?
> --> Europa-List message posted by: irampil@notes.cc.sunysb.edu
>
>
> Hi Ron,
>
> The main thing I know of is to do the dive brake control install while the
> cockpit module out of the fuse. If you wait til you are done, you will be
> squeezed for space and have to rip up uphostery.
>
> Ira
snipped
do not archive
Message 5
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--> Europa-List message posted by: "Fergus Kyle" <VE3LVO@rac.ca>
Drill a hole into the fuselage at the center, half way between the shoot
bolts that hold the door closed and centered on the fuselage lip. The width
of the hole is determined by how far you want the egg to drop into the hole.
I used ~ 1"circumference so the hole squeezes the egg about a third of the
way up it.
Hello
My impression of previous emails and articles in the Club
magazine says "it better be a tiny hole" because some considerable
structural integrity is dependent upon a secure doorsill. The PFA warns
against decreasing the sill strength in all but a small way - and even then
suggests careful scrutiny ever after.
Previous emails and articles refer.
Ferg
Europa A064
Message 6
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--> Europa-List message posted by: "Nigel Charles" <nigelcharles@tiscali.co.uk>
>Drill a hole into the fuselage at the center, half way between the shoot
bolts that hold the door closed and centered on the fuselage lip. The width
of the hole is determined by how far you want the egg to drop into the hole.
I used ~ 1"circumference so the hole squeezes the egg about a third of the
way up it.<
If I understand this correctly the hole is drilled in the horizontal part of
the door frame. If this is the case I would strongly advise against this
mod. The PFA have warned us that this frame rebate is a strength critical
area of the airframe particularly in the event of an accident. As the amount
of material removed across the width of the rebate greatly exceeds the
remaining material it would be very difficult to regain the strength lost by
reinforcing around the hole.
Nigel Charles
Message 7
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| Subject: | Re: Static Charges and how to avoid them |
--> Europa-List message posted by: Fred Fillinger <fillinger@ameritech.net>
> Fred,
>
> I agree with you that bonding other metal parts in the fuel
> system to the filler cap is probably less safe rather than
> more so. However if fuel drains are fitted, I think it's a
> good idea to ground them independently. Although it's a fairly
> remote possibility the last thing you need is a spark when you
> are lying on the ground draining fuel!
>
> Best regards,
> Nick
If a remote possibility, it's because static inside the tank dissipates
by itself shortly after refueling, and pre-flight fuel samples aren't
static producers. Nevertheless, note that merely tying it to A/C ground
does not remove any charge. The A/C ground has to be earthed also to be
effective.
Regarding anything metal exposed to the fuel tank innards which is tied
via a run of wire to A/C ground, there may be no good statistical answer
comparing the lightning hazard vs. that of static charges. I have only
one such item, the fuel sender, and it has a 2-pin connector accessible
inside the headrest. Theory is if caught near a storm, pull the thing
to at least feel better.
Recently a Lancair IV "exploded" in cruise, deviating around
thunderstorms, in apparent VMC on top. The preliminary report suggests
either G-load induced separation of both wings simultaneously - a rare
event...or a lightning strike. At least worrisome until NTSB says what
happened:
www.ntsb.gov/NTSB/brief.asp?ev_id=20030520X00696&key=1
Regards,
Fred F.
Message 8
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| Subject: | Static Charges and how to avoid them |
--> Europa-List message posted by: "Peter Zutrauen" <peterz@zutrasoft.com>
Not to be argumentative, and altho I agree with Fred that internal
grounding of the tank may be a bad idea in the case of a
lightning-strike, plastic planes (without any embedded
charge-distributing protective mesh) can and do indeed 'explode' when
hit by lightning anyway - the UK glider as an example. Hmmmm.... I
wonder how they would have faired if it were a Motorglider with fuel on
board ;-)
If the lancair accident was indeed a lightning strike, they should
easily identify all those melted/burned pieces. I wonder if the new
Lancairs have mesh.
Cheers,
Pete
A239
-----Original Message-----
From: Fred Fillinger [mailto:fillinger@ameritech.net]
Subject: Re: Europa-List: Static Charges and how to avoid them
--> Europa-List message posted by: Fred Fillinger
<fillinger@ameritech.net>
> Fred,
>
> I agree with you that bonding other metal parts in the fuel
> system to the filler cap is probably less safe rather than
> more so. However if fuel drains are fitted, I think it's a
> good idea to ground them independently. Although it's a fairly
> remote possibility the last thing you need is a spark when you
> are lying on the ground draining fuel!
>
> Best regards,
> Nick
If a remote possibility, it's because static inside the tank dissipates
by itself shortly after refueling, and pre-flight fuel samples aren't
static producers. Nevertheless, note that merely tying it to A/C ground
does not remove any charge. The A/C ground has to be earthed also to be
effective.
Regarding anything metal exposed to the fuel tank innards which is tied
via a run of wire to A/C ground, there may be no good statistical answer
comparing the lightning hazard vs. that of static charges. I have only
one such item, the fuel sender, and it has a 2-pin connector accessible
inside the headrest. Theory is if caught near a storm, pull the thing
to at least feel better.
Recently a Lancair IV "exploded" in cruise, deviating around
thunderstorms, in apparent VMC on top. The preliminary report suggests
either G-load induced separation of both wings simultaneously - a rare
event...or a lightning strike. At least worrisome until NTSB says what
happened:
www.ntsb.gov/NTSB/brief.asp?ev_id=20030520X00696&key=1
Regards,
Fred F.
Message 9
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| Subject: | Mods needed for glider wings? |
--> Europa-List message posted by: "Tony S. Krzyzewski" <tonyk@kaon.co.nz>
>>> I have thought that it would be abit of ajob to get the lift pins in
exactly
the same position on the second pair of wings. Anyone done this easily
yet?
I think that was one of the drivers behind the factory predrilling and
tapping the lift pin holes in the XS short wings and glider wings.
Tony
Message 10
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--> Europa-List message posted by: "Frank Mycroft" <frankm@clara.net>
For the last two years I have been having intermittent trouble with my Terra transceiver.
Two local radio shops have found no fault and Free Flight Systems
in USA had it for repair but although it worked when first returned it soon went
on the blink again. I have now stumbled on a chap in the UK who seems to have
found the root cause of the problem, which in my case was unreadable transmission,
but not all the time. He was able to experience the condition where
the radio worked perfectly and then for no apparent reason didn't, and then found
a solution. Certainly my radio has worked perfectly since I got it back from
him, although I have to say that I have not done a lot of flying since. If
you are in the UK and having similar problems you might like to contact him.
He is Graham Laucht at grahamlaucht@blueyonder.co.uk His charges, for an intractable
problem, were reasonable.
Frank Mycroft G-BWYD
Message 11
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| Subject: | Re: Static Charges and how to avoid them |
--> Europa-List message posted by: Gerry Holland <gnholland@onetel.com>
Hi! to all.
After much deliberation about Engines I have fitted a Rotax 912 with Arplast
PV50 Prop. and CS Controller. Tri-gear now stands on it's three legs!
I had not taken account or thought about Water Temperature or maybe a Water
Pressure Gauge too but it would seem sensible to monitor. I would like some
advice or experiences on fitting 'steam Gauge' type indicators and where the
sensor should or could be positioned. Should a mechanical Water Temperature
Gauge considered.
Regards
Gerry
Gerry Holland
Europa 384
G-FIZY
+44 7808 402404
gnholland@onetel.com
Message 12
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| Subject: | Water Temperature |
--> Europa-List message posted by: Gerry Holland <gnholland@onetel.com>
Sorry about Subject field being wrong on earlier e-mail. I need information
on Water Temperature Monitoring.
Message 13
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--> Europa-List message posted by: "Ami McFadyean" <ami@mcfadyean.freeserve.co.uk>
"....The shape of the egg draws the door to an exact fit with the fuselage
and holds it there securely....."
Or the matching big hole in the door sill allows the (now weakened) fuselage
to conform to the shape of the door!!
To avoid the Big Hole, why couldn't this mod. be turned on its head?
i.e. use a much smaller egg (or eggs) attached to the door sill with the
corresponding holes drilled (and reinforced) in the door frame? The buckling
or bending strength of the door frame would not be affected ( now that it is
additionally braced by the egg/s attached to the structurally much-stronger
and unmolested sill).
Duncan McF.
----- Original Message -----
From: "Rob Neils" <RobNeils@aimcomm.com>
Subject: Europa-List: Door latch
> --> Europa-List message posted by: RobNeils@aimcomm.com (Rob Neils)
>
> Europa "egg" door latch.
>
> I've installed a wooden egg to prevent the cabin doors from bulging in
flight. A wooden egg is trimmed and affixed to each door so that as the door
closes the pointy end of the egg inserts into a circular hole in the
fuselage. The shape of the egg draws the door to an exact fit with the
fuselage and holds it there securely.
>
Message 14
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| Subject: | Re: Static Charges and how to avoid them |
--> Europa-List message posted by: "KARL HEINDL" <kheindl@msn.com>
Hi Gerry,
Take a look at Skydrive kit for water temperature. It is very cheap, passive
VDO probe (same as
is used by Rotax for CH), goes directly into one of the water hoses on top
of the engine and
is easy to install. I use an EIS, but other instruments should be fine also.
Regards, Karl
>From: Gerry Holland <gnholland@onetel.com>
>Reply-To: europa-list@matronics.com
>To: <europa-list@matronics.com>
>Subject: Re: Europa-List: Static Charges and how to avoid them
>Date: Tue, 27 May 2003 19:13:36 +0100
>
>--> Europa-List message posted by: Gerry Holland <gnholland@onetel.com>
>
>Hi! to all.
>
>After much deliberation about Engines I have fitted a Rotax 912 with
>Arplast
>PV50 Prop. and CS Controller. Tri-gear now stands on it's three legs!
>
>I had not taken account or thought about Water Temperature or maybe a Water
>Pressure Gauge too but it would seem sensible to monitor. I would like some
>advice or experiences on fitting 'steam Gauge' type indicators and where
>the
>sensor should or could be positioned. Should a mechanical Water Temperature
>Gauge considered.
>
>Regards
>
>Gerry
>
>Gerry Holland
>Europa 384
>G-FIZY
>+44 7808 402404
>gnholland@onetel.com
>
>
http://www.msn.co.uk/messenger
Message 15
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| Subject: | Re: Water Temperature |
--> Europa-List message posted by: "KARL HEINDL" <kheindl@msn.com>
do not archive
Gerry, I also used your wrong heading for return answer on water
temperature.
Karl
>From: Gerry Holland <gnholland@onetel.com>
>Reply-To: europa-list@matronics.com
>To: <europa-list@matronics.com>
>Subject: Europa-List: Water Temperature
>Date: Tue, 27 May 2003 19:48:38 +0100
>
>--> Europa-List message posted by: Gerry Holland <gnholland@onetel.com>
>
>Sorry about Subject field being wrong on earlier e-mail. I need information
>on Water Temperature Monitoring.
>
>
http://www.msn.co.uk/messenger
Message 16
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| Subject: | Re: Water Temperature |
--> Europa-List message posted by: Gerry Holland <gnholland@onetel.com>
> --> Europa-List message posted by: "KARL HEINDL" <kheindl@msn.com>
>
> do not archive
>
> Gerry, I also used your wrong heading for return answer on water
> temperature.
>
I started that with a senior moment earlier!
Regards
Gerry
Gerry Holland
Europa 384
G-FIZY
+44 7808 402404
gnholland@onetel.com
do not archive
Message 17
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| Subject: | Re: Water Temperature |
--> Europa-List message posted by: James Nelson <europajim@juno.com>
Gerry,
If you are using the EIS system, they have provisions for water
temp. monitoring. I have it on mine. The sender is in an aluminum tube
inserted in the return line going back to the radiator. Just be sure to
include a ground wire for the sensor. It just gives you one more sensor
to detect a failure. You have the CHT, EGT and water temp. to sense a
coolant failure. What more could you want? :-)) I like my EIS..
Jim Nelson
N15JN
On Tue, 27 May 2003 19:48:38 +0100 Gerry Holland <gnholland@onetel.com>
writes:
> --> Europa-List message posted by: Gerry Holland
> <gnholland@onetel.com>
>
> Sorry about Subject field being wrong on earlier e-mail. I need
> information
> on Water Temperature Monitoring.
>
>
>
>
>
>
>
>
>
>
Message 18
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| Subject: | Re: Static Charges and how to avoid them |
--> Europa-List message posted by: "J R \(Bob\) Gowing" <gowingjr@acr.net.au>
It was my understanding that the exploding glider in the UK had water in the
wings and the lightning used it as a right-of-way converting the water to a
sort of steam explosive-like charge which disintegrated the ship.
J R (Bob) Gowing, Kit 327 in Oz
do not archive
----- Original Message -----
From: "Peter Zutrauen" <peterz@zutrasoft.com>
Subject: RE: Europa-List: Static Charges and how to avoid them
> --> Europa-List message posted by: "Peter Zutrauen" <peterz@zutrasoft.com>
>
> Not to be argumentative, and altho I agree with Fred that internal
> grounding of the tank may be a bad idea in the case of a
> lightning-strike, plastic planes (without any embedded
> charge-distributing protective mesh) can and do indeed 'explode' when
> hit by lightning anyway - the UK glider as an example. Hmmmm.... I
> wonder how they would have faired if it were a Motorglider with fuel on
> board ;-)
>
>
> If the lancair accident was indeed a lightning strike, they should
> easily identify all those melted/burned pieces. I wonder if the new
> Lancairs have mesh.
>
> Cheers,
> Pete
> A239
>
> -----Original Message-----
> From: Fred Fillinger [mailto:fillinger@ameritech.net]
> To: europa-list@matronics.com
> Subject: Re: Europa-List: Static Charges and how to avoid them
>
> --> Europa-List message posted by: Fred Fillinger
> <fillinger@ameritech.net>
>
> > Fred,
> >
> > I agree with you that bonding other metal parts in the fuel
> > system to the filler cap is probably less safe rather than
> > more so. However if fuel drains are fitted, I think it's a
> > good idea to ground them independently. Although it's a fairly
> > remote possibility the last thing you need is a spark when you
> > are lying on the ground draining fuel!
> >
> > Best regards,
> > Nick
>
> If a remote possibility, it's because static inside the tank dissipates
> by itself shortly after refueling, and pre-flight fuel samples aren't
> static producers. Nevertheless, note that merely tying it to A/C ground
>
> does not remove any charge. The A/C ground has to be earthed also to be
>
> effective.
>
> Regarding anything metal exposed to the fuel tank innards which is tied
> via a run of wire to A/C ground, there may be no good statistical answer
>
> comparing the lightning hazard vs. that of static charges. I have only
> one such item, the fuel sender, and it has a 2-pin connector accessible
> inside the headrest. Theory is if caught near a storm, pull the thing
> to at least feel better.
>
> Recently a Lancair IV "exploded" in cruise, deviating around
> thunderstorms, in apparent VMC on top. The preliminary report suggests
> either G-load induced separation of both wings simultaneously - a rare
> event...or a lightning strike. At least worrisome until NTSB says what
> happened:
>
> www.ntsb.gov/NTSB/brief.asp?ev_id=20030520X00696&key=1
>
> Regards,
> Fred F.
>
>
Message 19
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| Subject: | Re: Mods needed for glider wings? |
--> Europa-List message posted by: "J R \(Bob\) Gowing" <gowingjr@acr.net.au>
Thank you Tony,
It has had me intrigued but have not seen any explanation published in
Europa Aricraft News where one would expect to see such informantion; or
anywhere else.
Now I can permanently forget glider wings!
J R (Bob) Gowing, Kit 327 in Oz
do not archive
----- Original Message -----
From: "Tony S. Krzyzewski" <tonyk@kaon.co.nz>
Subject: RE: Europa-List: Mods needed for glider wings?
> --> Europa-List message posted by: "Tony S. Krzyzewski" <tonyk@kaon.co.nz>
>
>
> >>> I have thought that it would be abit of ajob to get the lift pins in
> exactly
> the same position on the second pair of wings. Anyone done this easily
> yet?
>
> I think that was one of the drivers behind the factory predrilling and
> tapping the lift pin holes in the XS short wings and glider wings.
>
> Tony
>
>
Message 20
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| Subject: | Re: Static Charges and how to avoid them |
--> Europa-List message posted by: Fred Fillinger <fillinger@ameritech.net>
Peter Zutrauen wrote:
> Not to be argumentative, and altho I agree with Fred that internal
> grounding of the tank may be a bad idea in the case of a
> lightning-strike, plastic planes (without any embedded
> charge-distributing protective mesh) can and do indeed 'explode' when
> hit by lightning anyway - the UK glider as an example.
With one very important difference though. Even beyond the fact the UK
incident involved a monster lightning bolt that is rare:
I takes 2/10 of one thousandth of a Joule to ignite gasoline. The
average lightning bolt has 5 billion Joules! This is why FAA cautions
lightning discharges of a variety we don't consider lightning bolts can
blow up a plastic fuel tank, if it has a way of getting inside.
In the UK incident, the lightning didn't damage the fiberglass
structure, but it was the indirect effects of attachment to control
systems - EMP blast and 50,000F degrees worth of atmospheric
overpressure. In strikes of average strength to composite A/C, the
instances I can find suggests lightning commonly attaches to electrical
systems.
Regards,
Fred F.
Message 21
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| Subject: | Re: Mods needed for glider wings? |
--> Europa-List message posted by: "Paul McAllister" <paul.mcallister@qia.net>
Bob,
I did ask Neville at the factory the same question and they have a method
for doing this for the earlier Europa's that did not have pre drilled holes.
I can't recollect the exact details but the approach was pretty cunning. If
its something you want to pursue send him an email.
Cheers, Paul
----- Original Message -----
From: "J R (Bob) Gowing" <gowingjr@acr.net.au>
Subject: Re: Europa-List: Mods needed for glider wings?
> --> Europa-List message posted by: "J R \(Bob\) Gowing"
<gowingjr@acr.net.au>
>
> Thank you Tony,
> It has had me intrigued but have not seen any explanation published in
> Europa Aricraft News where one would expect to see such informantion; or
> anywhere else.
>
> Now I can permanently forget glider wings!
>
> J R (Bob) Gowing, Kit 327 in Oz
> do not archive
>
> ----- Original Message -----
> From: "Tony S. Krzyzewski" <tonyk@kaon.co.nz>
> To: <europa-list@matronics.com>
> Subject: RE: Europa-List: Mods needed for glider wings?
>
>
> > --> Europa-List message posted by: "Tony S. Krzyzewski"
<tonyk@kaon.co.nz>
> >
> >
> > >>> I have thought that it would be abit of ajob to get the lift pins in
> > exactly
> > the same position on the second pair of wings. Anyone done this easily
> > yet?
> >
> > I think that was one of the drivers behind the factory predrilling and
> > tapping the lift pin holes in the XS short wings and glider wings.
> >
> > Tony
> >
> >
>
>
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