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bob88
Joined: 24 Feb 2013
Posts: 99
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 Posted: Wed Feb 27, 2013 9:00 pm Post subject: Obstruction behind instrument panel |
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It appears that certain large screen EFIS will not fit behind the instrument panel due to the several structural elements that are in the way. Has anyone come up with a solution or a method for cutting these down without compromising the airframe?
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Kelly McMullen
Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ
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| Posted: Wed Feb 27, 2013 9:09 pm Post subject: Obstruction behind instrument panel |
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Vans recommends rather strongly that the triangular braces not be cut. Some certainly have done it and reinforced with aluminum angle, but no idea how sound that might be.
No clearance issues with my Dynon Skyview 10" screens.
On Wed, Feb 27, 2013 at 9:57 PM, BC <marty.crooks(at)comcast.net (marty.crooks(at)comcast.net)> wrote:
[quote]
It appears that certain large screen EFIS will not fit behind the instrument panel due to the several structural elements that are in the way. Has anyone come up with a solution or a method for cutting these down without compromising the airframe?
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get="_blank">http://www.matronics.com/Navigator?RV10-List
tp://forums.matronics.com
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Kelly McMullen
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dave.saylor.aircrafters(a
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| Posted: Wed Feb 27, 2013 9:14 pm Post subject: Obstruction behind instrument panel |
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The Incredibly Magnificent One's (TIM O) website has what you're looking for:
http://www.myrv10.com/N104CD/fuselage/20050610/index.html
Did anyone notice how well the upper fuselage area held together in
the Lake Placid accident? He had big AFS screens so he almost
certainly had to modify these ribs. If I had to leave one intact, I'd
make it the center one. Look at the pictures of the center post in
the accident photos--it's pretty clearly bent.
Dave Saylor
831-750-0284 CL
On Wed, Feb 27, 2013 at 8:57 PM, BC <marty.crooks(at)comcast.net> wrote:
| Quote: | It appears that certain large screen EFIS will not fit behind the instrument
panel due to the several structural elements that are in the way. Has anyone
come up with a solution or a method for cutting these down without
compromising the airframe?
|
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http://www.matronics.com/Navigator?RV10-List |
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flying-nut(at)cfl.rr.com
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| Posted: Wed Feb 27, 2013 9:44 pm Post subject: Obstruction behind instrument panel |
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I just trimmed the small end back a little to fit MGL Odysseys.
Linn
On 2/27/2013 11:57 PM, BC wrote:
[quote] <![endif]--> <![endif]-->
It appears that certain large screen EFIS will not fit behind the instrument panel due to the several structural elements that are in the way. Has anyone come up with a solution or a method for cutting these down without compromising the airframe?
No virus found in this message.
Checked by AVG - www.avg.com
02/27/13 [b]
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jesse(at)saintaviation.co
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| Posted: Thu Feb 28, 2013 3:42 am Post subject: Obstruction behind instrument panel |
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I've done almost exactly this. I've never modified the center rib in any way, but the outboards I've modified like Tim did.
Do not archive.
Jesse Saint
I-TEC, Inc.
jesse(at)itecusa.org
www.itecusa.org
www.mavericklsa.com
C: 352-427-0285
O: 352-465-4545
F: 815-377-3694
Sent from my iPhone
On Feb 28, 2013, at 12:13 AM, Dave Saylor <dave.saylor.aircrafters(at)gmail.com> wrote:
| Quote: |
The Incredibly Magnificent One's (TIM O) website has what you're looking for:
http://www.myrv10.com/N104CD/fuselage/20050610/index.html
Did anyone notice how well the upper fuselage area held together in
the Lake Placid accident? He had big AFS screens so he almost
certainly had to modify these ribs. If I had to leave one intact, I'd
make it the center one. Look at the pictures of the center post in
the accident photos--it's pretty clearly bent.
Dave Saylor
831-750-0284 CL
On Wed, Feb 27, 2013 at 8:57 PM, BC <marty.crooks(at)comcast.net> wrote:
> It appears that certain large screen EFIS will not fit behind the instrument
> panel due to the several structural elements that are in the way. Has anyone
> come up with a solution or a method for cutting these down without
> compromising the airframe?
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stein(at)steinair.com
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| Posted: Thu Feb 28, 2013 7:06 am Post subject: Obstruction behind instrument panel |
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It’s very common to modify the structure behind the panel within reason. The ribs and sub panel are all candidates for modification, but that doesn’t mean you just “remove material” and call it good. With any aircraft structure from a cub to a 747, if you remove material you traditionally need to add back material in order to give said structure it’s load bearing capacity. If you remove in one place, you add in another. There are a number of ways to modify the ribs and still keep the structural integrity of the entire assembly in place, but it’s also not a one size fit’s all solution. The center rib from where the center brace attaches is a place that is difficult to do any reasonable modification. That said, all of the ribs between the sub panel and the main panel can be changed in differing ways (depending on your situation) to allow for avionics, efises, etc.. to be installed and still keep everything good. I’d encourage you to decide what is going in there, then decide what/where you need to modify and consult with someone before just jumping in. That doesn’t mean you have to hire a structural engineer, but have a 2nd set of eyes from someone who knows structure pretty well and you’ll be good!
Just my 2 cents as usual.
Cheers,
Stein
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of BC
Sent: Wednesday, February 27, 2013 10:57 PM
To: rv10-list(at)matronics.com
Subject: Obstruction behind instrument panel
It appears that certain large screen EFIS will not fit behind the instrument panel due to the several structural elements that are in the way. Has anyone come up with a solution or a method for cutting these down without compromising the airframe?
| Quote: | | http://www.matronics.com/Navigator?RV10-List |
01234567
[quote][b]
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johngoodman
Joined: 18 Sep 2006
Posts: 530
Location: GA
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| Posted: Fri Mar 01, 2013 7:38 am Post subject: Re: Obstruction behind instrument panel |
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I was able to avoid touching the ribs, but I used page 41-3 to the maximum. As Stein said, it takes planning and compromise.
John
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trigo(at)mail.telepac.pt
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| Posted: Fri Mar 01, 2013 7:59 am Post subject: Obstruction behind instrument panel |
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John
What do you exactly mean by using page 41-3 to the maximum?
Carlos
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johngoodman
Joined: 18 Sep 2006
Posts: 530
Location: GA
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| Posted: Fri Mar 01, 2013 9:13 am Post subject: Re: Obstruction behind instrument panel |
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| trigo(at)mail.telepac.pt wrote: | John
What do you exactly mean by using page 41-3 to the maximum?
Carlos
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My Radio Stack is immediately to the right of the center brace, and my VP-200 is just to the left. I got them as close as I could but still using Van's bracing suggestions on 41-3.
John
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