Today's Message Index:
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1. 06:41 AM - Aileron LE Vee layup (n7188u)
2. 07:22 AM - Re: Aileron LE Vee layup (davidjoyce@doctors.org.uk)
3. 08:32 AM - Re: Aileron LE Vee layup (Rowland Carson)
4. 09:53 AM - Re: Aileron LE Vee layup (n7188u)
5. 06:08 PM - Re: Aileron LE Vee layup (n7188u)
6. 06:37 PM - Re: Re: Aileron LE Vee layup (Pete)
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Subject: | Aileron LE Vee layup |
Hello to the Europa community,
I am making good progress on my XS and have the two ailerons skinned. A little
slow due to vacation and work travel but getting there. I am in the process of
doing the layup for the leading edge vee cutout for the aileron hinges (step
5) and I have a question:
Can you do this layup with a single length of 45 biased BID or do you need to splice
two pieces? BID can be stretched (with corresponding change in fiber bias)
but its generally acceptable up to point. I starter with 6-5 inch wide strips
but at a final 4 inches wide I am just a hair short of the full aileron length.
It's possible that a wider piece may do it but I am starting to feel I am
pushing it too hard. Just trying to see what people did since the manual makes
you believe a single long piece will be enough (no mention of splicing or cutting
more than two full length pieces).
BTW, I do have a web site where I am documenting my build. Will make the address
public soon!
Thanks,
Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=470692#470692
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Subject: | Re: Aileron LE Vee layup |
Chris, You may get a definitive answer from a real expert, but I would
say that it would not matter whether you :
1. Stretch it to cover; 2. put it on at an angle slightly less than 45
degrees to cover or 3. use an extra piece and overlap the pieces. But I
would personally reject 3. as being less neat and heavier.
Regards, David Joyce, GXSDJ
On 2017-07-05 14:40, n7188u wrote:
>
> Hello to the Europa community,
>
> I am making good progress on my XS and have the two ailerons skinned. A little
slow due to vacation and work travel but getting there. I am in the process
of doing the layup for the leading edge vee cutout for the aileron hinges (step
5) and I have a question:
>
> Can you do this layup with a single length of 45 biased BID or do you need to
splice two pieces? BID can be stretched (with corresponding change in fiber bias)
but its generally acceptable up to point. I starter with 6-5 inch wide strips
but at a final 4 inches wide I am just a hair short of the full aileron length.
It's possible that a wider piece may do it but I am starting to feel I
am pushing it too hard. Just trying to see what people did since the manual makes
you believe a single long piece will be enough (no mention of splicing or
cutting more than two full length pieces).
>
> BTW, I do have a web site where I am documenting my build. Will make the address
public soon!
>
> Thanks,
> Chris
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=470692#470692 [1]
>
Links:
------
[1] http://forums.matronics.com/viewtopic.php?p=470692#470692
[2] http://www.matronics.com/Navigator?Europa-List
[3] http://forums.matronics.com
[4] http://wiki.matronics.com
[5] http://www.matronics.com/contribution
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Subject: | Re: Aileron LE Vee layup |
On 2017-07-05, at 14:40, n7188u <chmgarb@gmail.com> wrote:
> I am in the process of doing the layup for the leading edge vee cutout for the
aileron hinges (step 5) and I have a question:
>
> Can you do this layup with a single length of 45 biased BID or do you need to
splice two pieces?
Chris - I had a similar query a long time ago and went to the source (Neville)
for the answer. You can see the story on my build journal for 3 January 2003 here:
http://www.rowlandcarson.org.uk/aviation/europa_435/200301.php
Hope this helps.
in friendship
Rowland
| Rowland Carson ... that's Rowland with a 'w' ...
| <rowlandcarson@gmail.com> http://www.rowlandcarson.org.uk
| Skype, Twitter: rowland_carson Facebook: Rowland Carson
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Subject: | Re: Aileron LE Vee layup |
Thank you David and Rowland.
As to the options, I am trying to stay away from the overlap. Probably not that
bad but it seems the factory intended you to stretch the tape and it would look
better. Even Rutan mentioned it's acceptable for most applications (in the
LongEZ and Cozy plans, which is what I'm familiar with).
My problem is that even with stretch, I am a little short. I'll figure it out since
it is obvious per Rowland's log that it is possible.
I'm just surprised that they don't have you use two layers of uni at 30 degrees
and BID in the aileron hinge reinforcements. By the time you stretch the BID
you are probably close to that.
Thanks for the reference to your log Rowland. I actually searched through it and
the pictures yesterday since you do have a lot of info there. But I just didn't
find it since it's difficult to find exactly where in the logs you are building
something of particular interest. But thanks to your reference I have it
now bookmarked.
BTW, when reading your log it's obvious that laying up this vee is a bear of a
job!! It seems that doing all the layers in the poly is the way to go but the
peel-ply removal seems to be a hughe issue. Maybe I will place it not quite all
the way in (stay away from the fillet) and sand the inside a little using the
flat permagrit tool.
Best regards,
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=470695#470695
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Subject: | Re: Aileron LE Vee layup |
As promised, here is my build website:
https://sites.google.com/site/martineuropaxsa291/home
Best,
Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=470708#470708
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Subject: | Re: Aileron LE Vee layup |
Great site! Thx! (Im taking notes:)
One thing, is you tank bonded in with the epoxy layups? I hope not, and hope there
is some sort of release between the tank and the glass...otherwise it *will*
crack after it swells from the fuel and shrinks when empty (additional fluorinating
reduces this phenomena)
Cheers,
Pete
> On Jul 5, 2017, at 9:07 PM, n7188u <chmgarb@gmail.com> wrote:
>
>
> As promised, here is my build website:
>
> https://sites.google.com/site/martineuropaxsa291/home
>
> Best,
> Chris
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=470708#470708
>
>
>
>
>
>
>
>
>
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