Today's Message Index:
----------------------
1. 04:21 AM - Re: The Obsidian File (Area-51)
2. 05:14 AM - Re: Anti Door Warping (SHERIDAN Roger)
3. 06:12 AM - Re: Anti Door Warping (Alan Burrill)
4. 10:36 AM - Re: Anti Door Warping (D McFadyean)
5. 11:00 PM - Re: Anti Door Warping (Area-51)
Message 1
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| Subject: | Re: The Obsidian File |
The aero model is now complete, with individual split control surfaces... Today
saw a bit more final detail added to the aero model to prepare for another round
of tests in the digital wind tunnel... no idea what may happen with what is
now such a feature rich model. Computer may not be able to handle the crunching
of so many components this close to christmas...
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=509456#509456
Message 2
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| Subject: | Re: Anti Door Warping |
x-mailer: Apple Mail (2.3731.200.110.1.12)
That passive pin is a tricky problem to solve, to offload the gas strut but not
obstruct door closing fully.
My practical efforts were unsuccessful & I would love to see a CAD solution Santa...
> On 6 Dec 2022, at 00:44, rparigoris <rparigor@hotmail.com> wrote:
>
> CAUTION: This email originated from outside your organization. Exercise caution
when opening attachments or on clicking links from unknown senders.
>
>
> Hi Area 51
> Seems you kinda like uncovering Europa secrets using your computer. Perhaps you
want to give a try and uncover the secret geometry of passive pin that will
actually pull down the top aft edge of door. In addition, install of a passive
mid door sill pin and striker that keeps door nicely in place and will prevent
bulge. These two tips came from Neville. He preferred leaving the gas cylinder
mount original location (compared to factory mod), reinforce corner with
some CF and install passive pin. It took a number of E-Mails to get it straight
in my mind precise details. After making a perfect model, got it figured.
> Here's a link to build: pages 19 to 26:
> http://www.europaowners.org/gallery2/v/Begin-06-2003/Cockpit+above+door+sills/album246/?g2_page=19
> Ron P.
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=509454#509454
>
>
Roger Sheridan
Line Pilot
+44 (0) 1737 822 885
www.specialist-aviation.com
Specialist Aviation Services Limited Registered in England and Wales No:1848773
Registered office: Gloucestershire Airport, Staverton, Cheltenham, Gloucestershire
GL51 6SS
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Message 3
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| Subject: | Re: Anti Door Warping |
I wonder sometime why the gas strut.
There are some bonnets/boots/trunk and other doors that have a simple slide and
latch open solution. This has the advantage of holding door open and you the
push a release to allow door to drop, while holding it to stop sudden descent,
but no pressure on any part of door frame.
I dont have any off-shelf mechanisms in mind for this that Ive tried.
Thoughts, problems?
Alan
Sent from my iPad
> On 7 Dec 2022, at 13:15, SHERIDAN Roger <RSheridan@specialist-aviation.com> wrote:
>
>
> That passive pin is a tricky problem to solve, to offload the gas strut but not
obstruct door closing fully.
> My practical efforts were unsuccessful & I would love to see a CAD solution Santa...
>
>> On 6 Dec 2022, at 00:44, rparigoris <rparigor@hotmail.com> wrote:
>>
>> CAUTION: This email originated from outside your organization. Exercise caution
when opening attachments or on clicking links from unknown senders.
>>
>>
>> Hi Area 51
>> Seems you kinda like uncovering Europa secrets using your computer. Perhaps
you want to give a try and uncover the secret geometry of passive pin that will
actually pull down the top aft edge of door. In addition, install of a passive
mid door sill pin and striker that keeps door nicely in place and will prevent
bulge. These two tips came from Neville. He preferred leaving the gas cylinder
mount original location (compared to factory mod), reinforce corner with
some CF and install passive pin. It took a number of E-Mails to get it straight
in my mind precise details. After making a perfect model, got it figured.
>> Here's a link to build: pages 19 to 26:
>> http://www.europaowners.org/gallery2/v/Begin-06-2003/Cockpit+above+door+sills/album246/?g2_page=19
>> Ron P.
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=509454#509454
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
> Roger Sheridan
>
> Line Pilot
>
> +44 (0) 1737 822 885
>
>
> www.specialist-aviation.com
>
> Specialist Aviation Services Limited Registered in England and Wales No:1848773
> Registered office: Gloucestershire Airport, Staverton, Cheltenham, Gloucestershire
GL51 6SS
>
> This message and any attachments are confidential and intended only for the use
of the person to whom they are addressed. If you are not the intended recipient,
you must not use, copy or distribute this message or any attachments. Any
such action may be unlawful. If you have received this message in error, please
notify us immediately by replying to the message and delete it from your computer.
Messages sent to and from us may be monitored.
> Internet communications may be intercepted, corrupted, lost, arrive late or incomplete,
or contain viruses. Therefore, we do not accept responsibility for
any errors or omissions that have arisen as a result of email transmission or
for viruses. It is your responsibility to conduct your own virus checking. If
verification is required, please request a hard-copy version. Any opinions expressed
are those of the author and do not necessarily represent those of the company.
>
> --------------------------------------------------------------------------------
>
>
>
>
> Scanned by SystemForce I.T. PRMX Security System
>
>
>
>
Message 4
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| Subject: | Re: Anti Door Warping |
Lots of ideas in this thread:
https://www.homebuiltairplanes.com/forums/threads/keeping-a-swing-over-canopy-open.39598/#post-690498
Personally I like Justin's "scissor" mechanism best (which contains the gas strut
loads when the door is shut). Anyone got any dimensioned drawings for that?
Duncan McF.
> On 07 December 2022 at 14:11 Alan Burrill <alanb@dpy01.co.uk> wrote:
>
>
>
> I wonder sometime why the gas strut.
>
> There are some bonnets/boots/trunk and other doors that have a simple slide and
latch open solution. This has the advantage of holding door open and you the
push a release to allow door to drop, while holding it to stop sudden descent,
but no pressure on any part of door frame.
>
> I dont have any off-shelf mechanisms in mind for this that Ive tried.
>
> Thoughts, problems?
>
> Alan
>
> Sent from my iPad
>
> > On 7 Dec 2022, at 13:15, SHERIDAN Roger <RSheridan@specialist-aviation.com>
wrote:
> >
> >
> > That passive pin is a tricky problem to solve, to offload the gas strut but
not obstruct door closing fully.
> > My practical efforts were unsuccessful & I would love to see a CAD solution
Santa...
> >
> >> On 6 Dec 2022, at 00:44, rparigoris <rparigor@hotmail.com> wrote:
> >>
> >> CAUTION: This email originated from outside your organization. Exercise caution
when opening attachments or on clicking links from unknown senders.
> >>
> >>
> >> Hi Area 51
> >> Seems you kinda like uncovering Europa secrets using your computer. Perhaps
you want to give a try and uncover the secret geometry of passive pin that
will actually pull down the top aft edge of door. In addition, install of a passive
mid door sill pin and striker that keeps door nicely in place and will prevent
bulge. These two tips came from Neville. He preferred leaving the gas cylinder
mount original location (compared to factory mod), reinforce corner with
some CF and install passive pin. It took a number of E-Mails to get it straight
in my mind precise details. After making a perfect model, got it figured.
> >> Here's a link to build: pages 19 to 26:
> >> http://www.europaowners.org/gallery2/v/Begin-06-2003/Cockpit+above+door+sills/album246/?g2_page=19
> >> Ron P.
> >>
> >>
> >>
> >>
> >> Read this topic online here:
> >>
> >> http://forums.matronics.com/viewtopic.php?p=509454#509454
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
> > Roger Sheridan
> >
> > Line Pilot
> >
> > +44 (0) 1737 822 885
> >
> >
> > www.specialist-aviation.com
> >
> > Specialist Aviation Services Limited Registered in England and Wales No:1848773
> > Registered office: Gloucestershire Airport, Staverton, Cheltenham, Gloucestershire
GL51 6SS
> >
> > This message and any attachments are confidential and intended only for the
use of the person to whom they are addressed. If you are not the intended recipient,
you must not use, copy or distribute this message or any attachments.
Any such action may be unlawful. If you have received this message in error, please
notify us immediately by replying to the message and delete it from your
computer. Messages sent to and from us may be monitored.
> > Internet communications may be intercepted, corrupted, lost, arrive late or
incomplete, or contain viruses. Therefore, we do not accept responsibility for
any errors or omissions that have arisen as a result of email transmission or
for viruses. It is your responsibility to conduct your own virus checking. If
verification is required, please request a hard-copy version. Any opinions expressed
are those of the author and do not necessarily represent those of the
company.
> >
> > --------------------------------------------------------------------------------
> >
> >
> >
> >
> > Scanned by SystemForce I.T. PRMX Security System
> >
> >
> >
> >
>
>
>
>
>
Message 5
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| Subject: | Re: Anti Door Warping |
Hi Ron, thanks for your request regarding door warping... to be straight up its
not an issue i have time to sit and examine; my time is constantly truly limited.
The CAD testing calls for a non dynamic testing algorithm which will not be accurate
enough to be useful to anybody due to so many variables; and that is the
b&w of what you are asking.
Cardboard is your best friend (and a pencil and some basic map charting tools)
; draw your solution and proof it on paper first using a pencil and circles; i
think thats how your passive pin system works? (See attached basic sketch)...
its going to be a solution of two arcs; the swing of the door frame and shape
of the pin and its parking gate. If you can get it to work with paper stencils
then it will work in situ. CAD will not provide you any better result or magic
solution. All CAD will provide you is the ability to record and replicate;
that's the only magic CAD will ever provide anybody. Personally from my quick
sketch i don't think it is a practical solution but more of a band aid for a greater
upstream affect; i could be totally wrong and often am.
The issue is not really safety related, which is my focus. It does hold some aerodynamic
qualities there, and the simple solution "is" strengthen the door frame
sufficiently at the time of production.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=509463#509463
Attachments:
http://forums.matronics.com//files/eec4e83c_aec3_460b_9585_589875a3317f_205.jpeg
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