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The King has no Clothes
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millstees(at)ameritech.ne
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PostPosted: Wed Apr 09, 2008 2:41 pm    Post subject: The King has no Clothes Reply with quote

Scott:

You just cut off the pointed end of the rod, and tap it with a 5/16-24 tap, screw the point in, and set it with some lok-tite. Works like a charm.


Steve Mills N750SM (reserved)
RV-10 40486 Slow-build Eggenfellner E-6TI
Naperville, Illinois
Finishing kit, engine install


From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Scott Schmidt
Sent: Wednesday, April 09, 2008 4:56 PM
To: rv10-list(at)matronics.com
Subject: Re: Re: The King has no Clothes

I have ordered the Rivethead door pins and I'm looking forward to installing them.
Is anyone concerned about cutting the door rod and having a weak point where it threads in?
Does anyone have any concerns about the system being less robust than the standard rods?

Scott Schmidt
scottmschmidt(at)yahoo.com


----- Original Message ----
From: AirMike <Mikeabel(at)Pacbell.net>
To: rv10-list(at)matronics.com
Sent: Tuesday, April 8, 2008 10:58:54 PM
Subject: Re: The King has no Clothes

[quote]

href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
[b]


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Deems Davis



Joined: 09 Jan 2006
Posts: 925

PostPosted: Wed Apr 09, 2008 2:54 pm    Post subject: The King has no Clothes Reply with quote

The one thing about the Rivethead receiver/pins arrangement that I'm not
comfortable with is that they are designed so that the machined pins are
captured by the receiver itself and do not project through the door
frame and the intercostal. IF (Big IF!!!) the fit of the doors is such
that there is some room for them to shift fore and aft, AND IF (another
BIG IF!!!) the pressure inside the cabin is enough to cause some
deformation and 'bowing' of the door itself, there MIGHT be a case for
the pins pulling out of the receiver and opening.
HOWEVER, if the pins are inserted so that they pass all of the way
through the receivers and the doorframes / intercostals, this is a MUCH
less likely scenario. I think the down side is that with the longer
pins, it raises the risk of the pins being exposed and damaging the
paint in that region. I fit mine so they are longer and project through
the door and frame, BUT I definitely have the likelihood for paint damage.

Deems Davis # 406
'Its all done....Its just not put together'
http://deemsrv10.com/

Scott Schmidt wrote:
Quote:
I have ordered the Rivethead door pins and I'm looking forward to
installing them.
Is anyone concerned about cutting the door rod and having a weak point
where it threads in?
Does anyone have any concerns about the system being less robust than
the standard rods?

Scott Schmidt
scottmschmidt(at)yahoo.com

*
*


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rv(at)thelefflers.com
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PostPosted: Wed Apr 09, 2008 3:07 pm    Post subject: The King has no Clothes Reply with quote

I’m a little naive here since I’m just building wings. Couldn’t somebody like Rivethead-Aero or Steven DiNieri make new longer rods? I’m assuming that the short pins they send are screwed into existing rods.



From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Scott Schmidt
Sent: Wednesday, April 09, 2008 5:56 PM
To: rv10-list(at)matronics.com
Subject: Re: Re: The King has no Clothes



I have ordered the Rivethead door pins and I'm looking forward to installing them.
Is anyone concerned about cutting the door rod and having a weak point where it threads in?
Does anyone have any concerns about the system being less robust than the standard rods?


Scott Schmidt
scottmschmidt(at)yahoo.com

---


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capsteve



Joined: 09 Jan 2006
Posts: 111
Location: NIAGARA FALLS NY

PostPosted: Wed Apr 09, 2008 3:51 pm    Post subject: The King has no Clothes Reply with quote

I can make pins as long as needed, but consider the loads on the door pins are in shear. The likelihood that the rods or end pins break would be very low given that the doors (uhmw blocks) are touching the blocks in the door jamb. There is very little space. It would take a lot of force to shear a steel line with a stainless fastener threaded within. More likely would be the door flexing as deems pointed out or the blocks themselves tearing out somehow.
Once installed and operating it’s quite apparent that the guides and pins door fastener system is much more secure than the factory setup. With the factory setup you can get some fore aft movement out of the door even after its been latched.

Your mileage may vary….
Steven dinieri
Iflyrv10.com


From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Bob Leffler
Sent: Wednesday, April 09, 2008 7:04 PM
To: rv10-list(at)matronics.com
Subject: RE: Re: The King has no Clothes


I’m a little naive here since I’m just building wings. Couldn’t somebody like Rivethead-Aero or Steven DiNieri make new longer rods? I’m assuming that the short pins they send are screwed into existing rods.



From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Scott Schmidt
Sent: Wednesday, April 09, 2008 5:56 PM
To: rv10-list(at)matronics.com
Subject: Re: Re: The King has no Clothes



I have ordered the Rivethead door pins and I'm looking forward to installing them.
Is anyone concerned about cutting the door rod and having a weak point where it threads in?
Does anyone have any concerns about the system being less robust than the standard rods?


Scott Schmidt
scottmschmidt(at)yahoo.com

----- Original Message ----
From: AirMike <Mikeabel(at)Pacbell.net>
To: rv10-list(at)matronics.com
Sent: Tuesday, April 8, 2008 10:58:54 PM
Subject: Re: The King has no Clothes
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AV8ORJWC



Joined: 13 Jul 2006
Posts: 1149
Location: Aurora, Oregon "Home of VANS"

PostPosted: Wed Apr 09, 2008 4:15 pm    Post subject: The King has no Clothes Reply with quote

My impression is that N416EC was a Saint Aviation, VANS directive, Factory approved “Standard Install”. Hence the header “The King has no clothes”. All of those followers in the crowd to the “As Written Instructions” might reflect careful on this particular style of installation.

Every improvement is worth the pursuit. I have enjoyed the discussion and the enlightenment….. So Thank You all.

Four good people and three fine aircraft lost in six months is simply too many.

JC


From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Steven DiNieri
Sent: Wednesday, April 09, 2008 4:49 PM
To: rv10-list(at)matronics.com
Subject: RE: Re: The King has no Clothes


I can make pins as long as needed, but consider the loads on the door pins are in shear. The likelihood that the rods or end pins break would be very low given that the doors (uhmw blocks) are touching the blocks in the door jamb. There is very little space. It would take a lot of force to shear a steel line with a stainless fastener threaded within. More likely would be the door flexing as deems pointed out or the blocks themselves tearing out somehow.
Once installed and operating it’s quite apparent that the guides and pins door fastener system is much more secure than the factory setup. With the factory setup you can get some fore aft movement out of the door even after its been latched.

Your mileage may vary….
Steven dinieri
Iflyrv10.com


From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Bob Leffler
Sent: Wednesday, April 09, 2008 7:04 PM
To: rv10-list(at)matronics.com
Subject: RE: Re: The King has no Clothes


I’m a little naive here since I’m just building wings. Couldn’t somebody like Rivethead-Aero or Steven DiNieri make new longer rods? I’m assuming that the short pins they send are screwed into existing rods.



From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Scott Schmidt
Sent: Wednesday, April 09, 2008 5:56 PM
To: rv10-list(at)matronics.com
Subject: Re: Re: The King has no Clothes



I have ordered the Rivethead door pins and I'm looking forward to installing them.
Is anyone concerned about cutting the door rod and having a weak point where it threads in?
Does anyone have any concerns about the system being less robust than the standard rods?


Scott Schmidt
scottmschmidt(at)yahoo.com

----- Original Message ----
From: AirMike <Mikeabel(at)Pacbell.net>
To: rv10-list(at)matronics.com
Sent: Tuesday, April 8, 2008 10:58:54 PM
Subject: Re: The King has no Clothes
Quote:
http://www.matronics.com/Navigator?RV10-List
Quote:
Quote:
http://forums.matronics.com
Quote:
Quote:
http://www.matronics.com/contribution
Quote:
Quote:
[/b]http://www.matronics.com/Navigator?RV10-List
Quote:
[b]
http://forums.matronics.com[/b]
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[quote][b]


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dlm46007(at)cox.net
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PostPosted: Wed Apr 09, 2008 5:30 pm    Post subject: The King has no Clothes Reply with quote

After the 416EC thing surfaced I called the consulting engineer for my project (actually the neighbor lady with a PhD in ME from Caltech). After discussion she suggested several things. The flexing of the door could be stiffened by additional glass ion the inner side, preferably in the shape of an angle running fore to aft. Secondly she made the point that the fatigue ratio of stainless to aluminum is a factor of 10. If one is concerned about the working cycle of bending and scraping these pins to close the door, a thousand cycles could be of concern. As for me, mine is ready to fly with the standard closure but down the road I will seriously consider the replacement of the pins and the door bulkhead bushings with stainless.

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Rene Felker
Sent: Wednesday, April 09, 2008 3:29 PM
To: rv10-list(at)matronics.com
Subject: RE: Re: The King has no Clothes


My general comment would be no, I do not have any concerns. The end of the rod was already threaded per plans and all I did was fill them. ( Not exactly since I cut and threaded the rods again to shorten them.) But, they are not real tight. After 25 flight hours and the web traffic from last week, I inspected them and did not see any signs of wear. I rechecked their alignment and put some locktite on the threads. I installed mine per the video and thus they do not extend all the way into the cabin frame, only into the block itself. I am re-thinking that………..

Also, when you install the blocks there is very little room between the AL blocks and the nylon blocks in the door. I had to cut down the blocks on the door just to get the door to close. I think this closer tolerance helps to reduce the stress on the rod itself.

Rene' Felker
RV-10 N423CF Flying
801-721-6080


From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Scott Schmidt
Sent: Wednesday, April 09, 2008 3:56 PM
To: rv10-list(at)matronics.com
Subject: Re: Re: The King has no Clothes


I have ordered the Rivethead door pins and I'm looking forward to installing them.
Is anyone concerned about cutting the door rod and having a weak point where it threads in?
Does anyone have any concerns about the system being less robust than the standard rods?


Scott Schmidt
scottmschmidt(at)yahoo.com

---


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LarryRosen



Joined: 16 Jan 2006
Posts: 415
Location: Medford, NJ

PostPosted: Wed Apr 09, 2008 5:32 pm    Post subject: The King has no Clothes Reply with quote

Close to standard install. There is a metal plate between the plastic
block and the door frame, that on the outboard side is bent aft. This is
so when someone tries to close the door with the door pins out it does
not chip the paint. Minor mod, probably had not negative effect, but a
mod none the less.

Larry
do not archive

John W. Cox wrote:
[quote]
My impression is that N416EC was a Saint Aviation, VANS directive,
Factory approved “Standard Install”. Hence the header “The King has no
clothes”. All of those followers in the crowd to the “As Written
Instructions” might reflect careful on this particular style of
installation.

Every improvement is worth the pursuit. I have enjoyed the discussion
and the enlightenment….. So Thank You all.

Four good people and three fine aircraft lost in six months is simply
too many.

JC

------------------------------------------------------------------------

*From:* owner-rv10-list-server(at)matronics.com
[mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of *Steven
DiNieri
*Sent:* Wednesday, April 09, 2008 4:49 PM
*To:* rv10-list(at)matronics.com
*Subject:* RE: Re: The King has no Clothes

I can make pins as long as needed, but consider the loads on the door
pins are in shear. The likelihood that the rods or end pins break
would be very low given that the doors (uhmw blocks) are touching the
blocks in the door jamb. There is very little space. It would take a
lot of force to shear a steel line with a stainless fastener threaded
within. More likely would be the door flexing as deems pointed out or
the blocks themselves tearing out somehow.

Once installed and operating it’s quite apparent that the guides and
pins door fastener system is much more secure than the factory setup.
With the factory setup you can get some fore aft movement out of the
door even after its been latched.

Your mileage may vary….

Steven dinieri

Iflyrv10.com

------------------------------------------------------------------------

*From:* owner-rv10-list-server(at)matronics.com
[mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of *Bob Leffler
*Sent:* Wednesday, April 09, 2008 7:04 PM
*To:* rv10-list(at)matronics.com
*Subject:* RE: Re: The King has no Clothes

I’m a little naive here since I’m just building wings. Couldn’t
somebody like Rivethead-Aero or Steven DiNieri make new longer rods?
I’m assuming that the short pins they send are screwed into existing rods.

*From:* owner-rv10-list-server(at)matronics.com
[mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of *Scott Schmidt
*Sent:* Wednesday, April 09, 2008 5:56 PM
*To:* rv10-list(at)matronics.com
*Subject:* Re: Re: The King has no Clothes

I have ordered the Rivethead door pins and I'm looking forward to
installing them.
Is anyone concerned about cutting the door rod and having a weak point
where it threads in?
Does anyone have any concerns about the system being less robust than
the standard rods?

Scott Schmidt
scottmschmidt(at)yahoo.com

---


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_________________
Larry Rosen
#40356
N205EN (reserved)
<http>
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dlm46007(at)cox.net
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PostPosted: Wed Apr 09, 2008 5:51 pm    Post subject: The King has no Clothes Reply with quote

Are you saying that both doors were not found at each crash site? That certainly is one of my questions for the last two fatals

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of John W. Cox
Sent: Wednesday, April 09, 2008 5:13 PM
To: rv10-list(at)matronics.com
Subject: RE: Re: The King has no Clothes


My impression is that N416EC was a Saint Aviation, VANS directive, Factory approved “Standard Install”. Hence the header “The King has no clothes”. All of those followers in the crowd to the “As Written Instructions” might reflect careful on this particular style of installation.

Every improvement is worth the pursuit. I have enjoyed the discussion and the enlightenment….. So Thank You all.

Four good people and three fine aircraft lost in six months is simply too many.

JC


From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Steven DiNieri
Sent: Wednesday, April 09, 2008 4:49 PM
To: rv10-list(at)matronics.com
Subject: RE: Re: The King has no Clothes


I can make pins as long as needed, but consider the loads on the door pins are in shear. The likelihood that the rods or end pins break would be very low given that the doors (uhmw blocks) are touching the blocks in the door jamb. There is very little space. It would take a lot of force to shear a steel line with a stainless fastener threaded within. More likely would be the door flexing as deems pointed out or the blocks themselves tearing out somehow.
Once installed and operating it’s quite apparent that the guides and pins door fastener system is much more secure than the factory setup. With the factory setup you can get some fore aft movement out of the door even after its been latched.

Your mileage may vary….
Steven dinieri
Iflyrv10.com


From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Bob Leffler
Sent: Wednesday, April 09, 2008 7:04 PM
To: rv10-list(at)matronics.com
Subject: RE: Re: The King has no Clothes


I’m a little naive here since I’m just building wings. Couldn’t somebody like Rivethead-Aero or Steven DiNieri make new longer rods? I’m assuming that the short pins they send are screwed into existing rods.



From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Scott Schmidt
Sent: Wednesday, April 09, 2008 5:56 PM
To: rv10-list(at)matronics.com
Subject: Re: Re: The King has no Clothes



I have ordered the Rivethead door pins and I'm looking forward to installing them.
Is anyone concerned about cutting the door rod and having a weak point where it threads in?
Does anyone have any concerns about the system being less robust than the standard rods?


Scott Schmidt
scottmschmidt(at)yahoo.com

----- Original Message ----
From: AirMike <Mikeabel(at)Pacbell.net>
To: rv10-list(at)matronics.com
Sent: Tuesday, April 8, 2008 10:58:54 PM
Subject: Re: The King has no Clothes
Quote:
http://www.matronics.com/Navigator?RV10-List
Quote:
Quote:
http://forums.matronics.com
Quote:
Quote:
http://www.matronics.com/contribution
Quote:
Quote:
0
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1
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2[/b] [/quote]3
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ricksked(at)embarqmail.co
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PostPosted: Wed Apr 09, 2008 7:04 pm    Post subject: The King has no Clothes Reply with quote

Also Guys & Gals,
EVERY -10 I looked at here at SNF today...almost all of them I hadn't seen before, had very visible signs of scarring on the aft block. It is very apparent that door slamming and multiple locking attempts are taking their toll on the entire locking system. FWIW all I looked at had the delrin blocks, I didn't see any of the rivethead blocks, I really think the pulling of the door closed forward of the center of the door is leaving the aft section out of alignment, no new news here, we all know that from many past posts. Bottom line, with David's remarks regarding number of cycles, it seems to be very important to get the door into position and flush before trying to engage the pins to prevent this wear.It's a matter of time before there is a greater catastrophic loss waiting to happen than the one that sparked my post about it on VAF. I want everyone to also consider the fact that these doors "leave" the airplane....consider where they may fall.....playground, school, bus stop.....think about the potential person who may fall victim of a falling aircraft door.
I deal with construction safety and stats all day long, before every fatal injury in my business there is an escalation of "incidents" that stops when the fatality occur. After the catastrophe it drops sharply to a level about half of the normal incident rate, climbs to the "normal" or expected/average rate, holds there for quite awhile until the cycle starts over and begins to climb. It's at that time when I see the climb we start to focus with more vigor our efforts to communicate, remind, train, enforce what ever it takes to get every ones minds back into safe mode. This is no different, folks we are climbing, time to focus on and fix the problem before it spikes. The graphs are very sobering, almost like an EKG readout. Lets not go the way of the Lancair people, nip it in the bud lest we will  pay very much higher insurance rates and worse....our friends, family neighbors blood
Rick Sked
do not archive
---


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John Ackerman



Joined: 19 Jun 2006
Posts: 130
Location: Prescott, AZ

PostPosted: Wed Apr 09, 2008 9:59 pm    Post subject: The King has no Clothes Reply with quote

Folks, here is the Rivethead setup on our plane - Our parts were among
the first made, and came sans instructions, so we proceeded to install
them using what common sense was available... Smile

We cut the aluminum tubing latch pins, which had already been
internally threaded for the standard installation, to a length that
left the Rivethead bullet ends protruding just 1/16" or so out of the
plastic block on the door with the door latch handle in in the fully
open (pins retracted) position.

In the fully closed position, the bullet ends protrude through the
Rivethead aluminum block, through the glass doorframe, and through the
heavy aluminum vertical F1005C and F1042 Bulkhead Side Channels by
1/4" or more.
"Receiver" is the name Deems uses for the block - I like it! The
joint where the bullet end butts up against the aluminum tubing latch
pin is completely contained in the "receiver". The joint thus takes
almost no loads at all.

The aluminum tubing latch pins take all the load in shear over a very
short distance - the plastic block in the door tries to move outward
and the "receiver" stubbornly refuses to go along. I'm not sure, but I
think the threaded end of the bullet fills the interior of the
aluminum tube in the area subjected to the shear load.

I can 't see an even remotely likely structural failure mode
_provided_that_the_ doors_ are_closed _and_ latched_properly. Knock
wood! The receiver is held in place by two #10 screws that pass
through the side channels and fiberglass door frame and into the
receiver; they carry the forces on the block to the airframe structure
(Bulkhead Side Channels)

Oh yeah - the doors close very easily (provided the little pins
attaching the latch pins to the racks don't get hung up)
and the latchup seems extremely solid. I can't detect any relative
motion at all when I grab the door and shake it.

John Ackerman 40458

On Apr 9, 2008, at 3:51 PM, Deems Davis wrote:

Quote:


The one thing about the Rivethead receiver/pins arrangement that I'm
not comfortable with is that they are designed so that the machined
pins are captured by the receiver itself and do not project through
the door frame and the intercostal. IF (Big IF!!!) the fit of the
doors is such that there is some room for them to shift fore and
aft, AND IF (another BIG IF!!!) the pressure inside the cabin is
enough to cause some deformation and 'bowing' of the door itself,
there MIGHT be a case for the pins pulling out of the receiver
and opening.
HOWEVER, if the pins are inserted so that they pass all of the way
through the receivers and the doorframes / intercostals, this is a
MUCH less likely scenario. I think the down side is that with the
longer pins, it raises the risk of the pins being exposed and
damaging the paint in that region. I fit mine so they are longer and
project through the door and frame, BUT I definitely have the
likelihood for paint damage.

Deems Davis # 406
'Its all done....Its just not put together'
http://deemsrv10.com/

Scott Schmidt wrote:
> I have ordered the Rivethead door pins and I'm looking forward to
> installing them.
> Is anyone concerned about cutting the door rod and having a weak
> point where it threads in? Does anyone have any concerns about the
> system being less robust than the standard rods?
> Scott Schmidt
> scottmschmidt(at)yahoo.com
>
> *
> *



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