Today's Message Index:
----------------------
1. 12:42 AM - Wing walk area delamination? (Richard Lamprey)
2. 01:14 AM - Re: Dynon Pitot/AOA (John Wighton)
3. 01:16 AM - Re: Wing walk area delamination? (Tim Ward)
4. 01:22 AM - Re: Wing walk area delamination? (John Wighton)
5. 01:40 AM - Re: Wing walk area delamination? (David Watts)
6. 01:48 AM - Re: Wing walk area delamination? (jonathanmilbank)
7. 04:14 AM - Re: Dynon Pitot/AOA (graeme bird)
8. 12:32 PM - Cowling (Airmaster) spinner gap (William Daniell)
9. 01:02 PM - Re: Cowling (Airmaster) spinner gap (davidjoyce@doctors.org.uk)
10. 01:04 PM - Re: Cowling (Airmaster) spinner gap (david park)
11. 01:22 PM - Re: Cowling (Airmaster) spinner gap (William Daniell)
Message 1
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| Subject: | Wing walk area delamination? |
Hi, my wing-walk area , pilots side, especially spar-forward, is softer and springier
than it used to be. It used to be hard as a rock. Maybe with all the
getting in and out, especially moving forward to the leading edge, has caused
some delamination. Has anyone else had this problem, and how did they solve
it?
Thanks, best, Richard
Kenya Europa Classic Mono Reg 5Y-LRY
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=463794#463794
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| Subject: | Re: Dynon Pitot/AOA |
I was about to post a similar post myself. The Dynon AoA/pitot is already fitted
to many aircraft but there is no Europa specific Mod which has been accepted
by the LAA. I realise this is not required outside the UK but the acceptance
process considers all of the aerodynamic, structural and performance issues
and therefore is a good place for others to start.
I have already advised an owner that the Dynon recommendation for the position
of the AoA probe/pitot may not be best for the Europa. The existing pitot/static
is >50% aft chord and has around 7in offset from the lower aerofoil surface.
As there is an existing facility to attach the standard pitot/probe and access
the static lines l figure this may be a good place to install the Dynon.
The function/calibration as an AoA needs to be assessed. It is not intended to
be the primary means of stall warning, it being a backup to the stall strip or
buzzer already mandated by the LAA.
If there are any Europa owners/operators on the forum who currently have the Dynon
AoA/pitot system installed can they please send me an email (to john.wighton
(at) ecoflight.co.uk). This is especially the case for UK based operators
(or other nations who use LAA Engineering approvals as a baseline) as they are
most likely operating with unapproved equipment. All communications will be treated
as confidential)
Another challenge is to get the required power out to the heated pitot. This is
relevant for Europa owners who are considering adapting their aircraft for UK
IFR operation under the LAA scheme.
The static port locations could be as standard (as Martin is proposing) - l understand
that Andy Draper has recommended twin fuselage mounted ports on another
Europa which will use the Dynon pitot/AoA. The location of these is not yet
proven, although Andy has significant experience with Europas and may have seen
a similar installation that worked successfully.
Depending on the response to this request l should be able to share relevant technical
data with Martin in the USA.
--------
John Wighton
Europa XS trigear G-IPOD
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=463795#463795
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| Subject: | Re: Wing walk area delamination? |
Hi Richard,
I know one builder who had a similar problem by simply seating in that area while
working on the aircraft. His body heat, along with a hot day, caused the softening.
Not sure what he did, if anything. He didn't have any delaminating.
Cheers,
Tim
Tim Ward
12 Waiwetu Street,
Fendalton,
Christchurch, 8052
New Zealand
ward.t@xtra.co.nz
Mob +64 210640221
> On 9/12/2016, at 4:41 PM, Richard Lamprey <lamprey.richard@gmail.com> wrote:
>
>
> Hi, my wing-walk area , pilots side, especially spar-forward, is softer and
springier than it used to be. It used to be hard as a rock. Maybe with all the
getting in and out, especially moving forward to the leading edge, has caused
some delamination. Has anyone else had this problem, and how did they solve
it?
> Thanks, best, Richard
> Kenya Europa Classic Mono Reg 5Y-LRY
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=463794#463794
>
>
>
>
>
>
>
>
>
Message 4
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| Subject: | Re: Wing walk area delamination? |
Richard,
I would make an immediate inspection of the are using a boroscope, if the skin
is compromised in this area there may be a significant reduction in strength.
The delaminated skin will only transfer loads in tension (top skin = negative
G), therefore you may have a reduction in ability to transfer positive G loads
to the fwd pickup. Luckily the spar does much of the work, but the skins work
for torsion and to transfer drag/antidrag loads via shear into the fwd/aft pickups.
If it is delaminated the repair may need to be more than localised.
Did you know Dr Joyce has some spare wings from kit #506?
I hope it turns out to be more benign than it at first appears.
Regards
JW
--------
John Wighton
Europa XS trigear G-IPOD
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=463797#463797
Message 5
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| Subject: | Re: Wing walk area delamination? |
Hi Richard,
Yes I have had it a couple of times and dealt with it on 3 others. Seen in the
right light you will usually see what looks like a high area (like a big low bubble).
Mark the outer limits of this bubble with a marker or tape.
Now the way to sort it out is to drill a series of 1/8 inch or so holes around
towards the outer limits of the area and then leave it for a while to settle (maybe
overnight or a day or so).
I usually tape and cover over the rest of the wing outside of the area with plastic
sheet. Now get a syringe and mix up some resin and inject it in to one of
the holes and keep injecting until it comes out of each of the other holes.
You will have to tape over each hole after the first bit of resin comes out of
that hole to stop all of it coming out of that one.
Once you have got resin out of all of the holes you know it has spread throughout
the area and you are done.
I usually cover the area with plastic sheet and lay something flexible and soft
and a little weighty over the area like a small bag of sand.
After it has all set you just need to make the area good again, which is the worst
part of the job.
Dave Watts
G-BXDY Classic Monowheel 2,300 hours.
> On 9 Dec 2016, at 08:41, Richard Lamprey <lamprey.richard@gmail.com> wrote:
>
>
> Hi, my wing-walk area , pilots side, especially spar-forward, is softer and
springier than it used to be. It used to be hard as a rock. Maybe with all the
getting in and out, especially moving forward to the leading edge, has caused
some delamination. Has anyone else had this problem, and how did they solve
it?
> Thanks, best, Richard
> Kenya Europa Classic Mono Reg 5Y-LRY
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=463794#463794
>
>
>
>
>
>
>
>
>
Message 6
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| Subject: | Re: Wing walk area delamination? |
If memory serves me, a very long time ago Peter Kember had the same thing and effected
a repair in the same way as Doug describes above. I think that the reason
I haven't suffered in the same way (yet) might be because I added a couple
of extra layers of glass cloth to my walkways 20 years ago.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=463799#463799
Message 7
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| Subject: | Re: Dynon Pitot/AOA |
I am looking at adding heating to the end of a standard europa pitot pipe from
aircraft spruce. Either using the positive temperature coeffient PTC resistors
as proposed/built by Eric M Jones for his glastar or using power resistors around
the tube end and a thermistor/silicon sensor based drive to heat when its
around zero. This way could make pitot heating viable on a standard 912S alternator.
It could be sufficiently light as to make no difference to the mounting
method.
--------
Graeme Bird
G-UMPY - Mono Classic/XS FFW 912S, Woodcomp 3000/3W CS, trutrak Gemini 2 axis
ap, pflarm, ads-b out, 8.33khz, mode S, FP 5, Aera500 & SD on Nexus,
250 hours & 4 years on the Mono, 880 total
g(at)gdbmk.co.uk
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=463800#463800
Message 8
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| Subject: | Cowling (Airmaster) spinner gap |
What is the recommended gap between the cowling and the spinner
I see 1" in the manual but think that I have seen different on the forum.
thanks
Will
William Daniell
LONGPORT
+57 310 295 0744
Message 9
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| Subject: | Re: Cowling (Airmaster) spinner gap |
Will, When I was building I spoke to Andy Draper atthe company and he
said 2-3 mm is fine and enough to allow for engine movement. No point in
having large gaps, which do nothing for aerodynamics or appearance.
Regards, David Joyce, GXSDJ
On 2016-12-09 20:31, William Daniell wrote:
> What is the recommended gap between the cowling and the spinner
>
> I see 1" in the manual but think that I have seen different on the forum.
>
> thanks
>
> Will
>
> William Daniell LONGPORT
>
> +57 310 295 0744
Message 10
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| Subject: | Re: Cowling (Airmaster) spinner gap |
Dave Park
Mine is no more than 3/8inch
Regards Dave Park
On 9 Dec 2016, at 20:31, William Daniell <wdaniell.longport@gmail.com> wrote:
>
> What is the recommended gap between the cowling and the spinner
>
> I see 1" in the manual but think that I have seen different on the forum.
>
> thanks
>
> Will
> William Daniell
> LONGPORT
> +57 310 295 0744
Message 11
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| Subject: | Re: Cowling (Airmaster) spinner gap |
Ok excellent thanks
On Dec 9, 2016 15:35, "William Daniell" <wdaniell.longport@gmail.com> wrote:
> What is the recommended gap between the cowling and the spinner
>
> I see 1" in the manual but think that I have seen different on the forum.
>
> thanks
>
> Will
> William Daniell
> LONGPORT
> +57 310 295 0744
>
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