Today's Message Index:
----------------------
1. 01:23 AM - Re: Wing skins (davidjoyce@doctors.org.uk)
2. 02:26 AM - Re: Wing skins (GRAHAM SINGLETON)
3. 04:13 AM - Re: Wing skins (William Daniell)
4. 05:28 AM - Re: Fw: Matt Dralle (list admin) (h&jeuropa)
5. 07:18 AM - Re: Re: Fw: Matt Dralle (list admin) (Robert Borger)
Message 1
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William, It is central to the laminar flow aerofoil that you end up with
a smooth upper wing, so fill & sand. The only critical rule so far as
the sanding goes is that you must not sand into the cloth as this
reduces the structural strength of the wing. So you can sand through the
gel coat until you can just see the cloth, but no further - the rest of
the profiling should be through filling the front side of the join. Best
of luck, David Joyce, GXSDJ
On 2016-01-03 22:33, William Daniell wrote:
> I have just stuck my wing skins (XS trigear) on and there seems to be a slight
mismatch...the rear wing skins being a smidgen (1/16 - 1/32) higher.
>
> What is the the approved process for correcting this...sand and fill?
>
> And if so how fast from the join should one go?
>
> thanks
>
> Will
>
> William Daniell LONGPORT
>
> +57 310 295 0744
Message 2
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Willthere is a rule of thumb about this, using a 6"steel rule, press it ont
o the surface with thumband finger 2" apart, then try and slip a .002" feel
er gauge under the rule. There should be no
gaps greater than this anywhere. In other words, its the waviness of the su
rface in a chordwise direction
that's important. Spanwise waviness is cosmetic. Be very careful at the ext
reme leading edge not tosand off the sharp radius at the front. That will s
poil the stall behaviour.
Graham
On Monday, 4 January 2016, 9:22, "davidjoyce@doctors.org.uk" <davidjoyc
e@doctors.org.uk> wrote:
William, It is central to the laminar flow aerofoil that you end up with a
smooth upper wing, so fill & sand. The only critical rule so far as the sa
nding goes is that you must not sand into the cloth as this reduces the str
uctural strength of the wing. So you can sand through the gel coat until yo
u can just see the cloth, but no further - the rest of the profiling should
be through filling the front side of the join. Best of luck, David Joyce,
GXSDJ=C2-=C2-On 2016-01-03 22:33, William Daniell wrote:
I have just stuck my wing skins (XS trigear) =C2-on and there seems to be
a slight mismatch...the rear wing skins being a smidgen (1/16 - 1/32) high
er.=C2-What is the the approved process for correcting this...sand and fi
ll?=C2-And if so how fast from the join should one go?=C2-thanks=C2-W
ill=C2-=C2-William DaniellLONGPORT
+57 310 295 0744
Message 3
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Graham & David thanks
Fortunately I wont even come close to the leading edge and the difference
is very small...so I am thinking of sanding forward of the join maybe 2"
and taking off the gel coat rear of the join.
By the way has anyone inspected the bonding? I was thinking of using one
of those endoscope/inspection cameras through a 10mm hole in the rear skin
(forward of the flap) . Peace of mind I suppose. The close out forward of
the flap is a very light weight affair and can not be that critical to the
wing strength.
Happy New Year to all
Will
William Daniell
LONGPORT
+57 310 295 0744
On Mon, Jan 4, 2016 at 5:20 AM, GRAHAM SINGLETON <
grahamsingleton@btinternet.com> wrote:
> Will
> there is a rule of thumb about this, using a 6"steel rule, press it onto
> the surface with thumb
> and finger 2" apart, then try and slip a .002" feeler gauge under the
> rule. There should be no
> gaps greater than this anywhere. In other words, its the waviness of the
> surface in a chordwise direction
> that's important. Spanwise waviness is cosmetic. Be very careful at the
> extreme leading edge not to
> sand off the sharp radius at the front. That will spoil the stall
> behaviour.
> Graham
>
>
> On Monday, 4 January 2016, 9:22, "davidjoyce@doctors.org.uk" <
> davidjoyce@doctors.org.uk> wrote:
>
>
> William, It is central to the laminar flow aerofoil that you end up with a
> smooth upper wing, so fill & sand. The only critical rule so far as the
> sanding goes is that you must not sand into the cloth as this reduces the
> structural strength of the wing. So you can sand through the gel coat until
> you can just see the cloth, but no further - the rest of the profiling
> should be through filling the front side of the join. Best of luck, David
> Joyce, GXSDJ
>
>
> On 2016-01-03 22:33, William Daniell wrote:
>
> I have just stuck my wing skins (XS trigear) on and there seems to be a
> slight mismatch...the rear wing skins being a smidgen (1/16 - 1/32) higher.
>
> What is the the approved process for correcting this...sand and fill?
>
> And if so how fast from the join should one go?
>
> thanks
>
> Will
>
>
> William Daniell
> LONGPORT
> +57 310 295 0744
>
>
Message 4
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| Subject: | Re: Fwd: Matt Dralle (list admin) |
Update from the VAF forum on Sunday, Jan 2,
"Multiple updates on FB today. all good news.
They took Matt off the vent. Later in the day he got out of bed and sat in a chair."
Jim & Heather
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=451714#451714
Message 5
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| Subject: | Re: Fwd: Matt Dralle (list admin) |
So glad to hear that Matt continues to improve. Matt and his family
continue to be in our prayers.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop (75 hrs).
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com <mailto:rlborger@mac.com>
> On Jan 4, 2016, at 7:22 AM, h&jeuropa <butcher43@att.net> wrote:
>
>
> Update from the VAF forum on Sunday, Jan 2,
>
> "Multiple updates on FB today. all good news.
>
> They took Matt off the vent. Later in the day he got out of bed and
sat in a chair."
>
> Jim & Heather
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