Today's Message Index:
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1. 04:59 AM - Re: Re: replacing a strut fitting (Flydog1966@aol.com)
2. 05:21 AM - Re: Re: Zenith701801-List Digest: 7 Msgs - 08/05/10 (mksoucy@yahoo.com)
3. 08:58 AM - Re: Re: replacing a strut fitting (Curt Thompson)
4. 09:06 AM - Re: Re: replacing a strut fitting (Steve Dixon)
5. 09:37 AM - Re: replacing a strut fitting (bryanekholm)
Message 1
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| Subject: | Re: replacing a strut fitting |
No, not me. that was dix39. I was asking what is the difference between a
standard concave riveter head, and the Zenith modified concave rivet head.
In a message dated 8/6/2010 9:32:03 P.M. Eastern Daylight Time,
bobkat@btinet.net writes:
Holy Smokers, Flydog! Unbelievable! What a job! Are you removing
EVERY rivet and replacing them? Just curious.....
From: _Flydog1966@aol.com_ (mailto:Flydog1966@aol.com)
Sent: Friday, August 06, 2010 7:23 PM
(mailto:zenith701801-list@matronics.com)
Subject: Re: Zenith701801-List: Re: replacing a strut fitting
I did not know that. Exactly how is it different?
No worries, I've got the Zenith one. Just curious.
In a message dated 8/6/2010 4:45:30 P.M. Eastern Daylight Time,
_dix39@charter.net_ (mailto:dix39@charter.net) writes:
You probably already know this, but just in case, the concave head riveter
is not a standard concave head but a modified one. I'm replacing all the
rivets in a 701 because the previous builder didn't use the correct head.
href="http://www.matronics.com/Navigat
or?Zenith701801-List">http://www.matronics.com/Navigator?Zenith701801-List
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Message 2
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| Subject: | Re: RE: Zenith701801-List Digest: 7 Msgs - 08/05/10 |
Steve you are wrong unless the rules have changed recently. Anyone from a six
year old to the bag lady on the corner can repair or maintain an experimental
amatuer built aircraft without a repairmans certificate. That is just how the
eaa said it when I called to confirm after being threated by local FAA who called
two days later to apologize this was back in 99 when I bought my pietenpol
which was complete and flying. The only thing you cannot do is perform the annual
condition inspection.
Sent from my iPod
On Aug 6, 2010, at 6:22 PM, "Steve Kurash" <stevekurash@gmail.com> wrote:
Earnest wrote:
Time: 07:20:34 AM PST US
Subject: Zenith701801-List: replacing a strut fitting
From: "ejessee" <eejessee@us.ibm.com>
Hello,
Per my incident with the worn-out rubber spacers, I have to replace the
strut fitting
on the right side of my 701. I ordered one from Zenith, had it shipped
next day air, and will have it painted tonight for installation on Saturday
morning
at KJFZ.
I am not the builder, so I am not intimately familiar with the attachment of
the
piece. I have a few questions I would appreciate help with.
My name is Steve Kurash, I have built from plans a 701, and have replaced
the wing strut fittings in order to re-paint them when they began to rust.
For a builder of the aircraft, this is definitely a doable project, but is
not an easy one; remembering that this fitting actually holds the wing onto
the airframe, it is also a very important part! As builders of experimental
aircraft, we have/have the ability to apply for, a repairman's certificate
that allows us to repair or maintain the airframe and engine, while buyers
of used or professionally assembled experimental aircraft are not allowed
that privilege.
It has been my observation that the member's of this list are always eager
to assist a builder with anything at all they are struggling with, and this
is what the list is all about. But, we as a group need to be mindful of the
FAA regulations that require a repairman's certificate in order for any
owner of an experimental aircraft to perform repairs and maintenance.
Earnest, please seek the services of an A&P to accomplish your repairs. It's
the law, and it is designed to protect you.
Respectfully,
Steve Kurash
Plans built 701
Planning underway for the plans building of a 750 with Corvair power.
Message 3
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| Subject: | Re: replacing a strut fitting |
In the ZAC Construction Manual, 4th ed, page 9, it talks about the modified
rivet head. I've made my own and also bought some from Zenith (with the
pneumatic squeezer). I think there was some instructions on how to make
them in one of the videos (maybe Mark Townsend knows which one). My results
look pretty close to what I get with the zenith head.
Several years ago, in the Zenair Newsletter #147 (March/April 2005) there is
a method describing how to test the Avex rivets. This is how I tested a
batch of my rivets:
For A4's, I cut two .032' AL pieces 20mm by about 80mm. For A5's, I used
.040" AL. Rivet the two together with 10mm overlap. Make sure you pull the
rivets with the cupped puller head as Zenith describes/sells. Now pull the
pieces apart lengthwise until they break. I used a fish scale with a 10:1
lever arm I made. Then I multiplied my readings by 10. I calibrated my
scale with a bucket of water but it was pretty close anyway.
The ZAC spec says that A4's should be 110lbs and the A5's should be 175 lbs.
I did several and they averaged out to 150 lbs and 295 lbs (respectively).
As far as replacing all of the rivets in a plane because the wrong rivet
head was used, I don't know if I would do that. The rivets are designed to
hold in shear. I wonder if the head makes all that much difference. Maybe
if the head was not folded over tight then there would be more corrosion
("smoked" rivets) but you should be inspecting for that. It seems to me
that drilling a rivet out and replacing it might make the connection weaker
due to the stretched hole the rivet is going back into.
It would be great if someone posted a closeup picture of a rivet pulled with
the wrong rivet head.
Curt
_____
From: owner-zenith701801-list-server@matronics.com
[mailto:owner-zenith701801-list-server@matronics.com] On Behalf Of
Flydog1966@aol.com
Sent: Saturday, August 07, 2010 4:59 AM
Subject: Re: Zenith701801-List: Re: replacing a strut fitting
No, not me. that was dix39. I was asking what is the difference between a
standard concave riveter head, and the Zenith modified concave rivet head.
In a message dated 8/6/2010 9:32:03 P.M. Eastern Daylight Time,
bobkat@btinet.net writes:
Holy Smokers, Flydog! Unbelievable! What a job! Are you removing EVERY
rivet and replacing them? Just curious.....
From: Flydog1966@aol.com
Sent: Friday, August 06, 2010 7:23 PM
Subject: Re: Zenith701801-List: Re: replacing a strut fitting
I did not know that. Exactly how is it different?
No worries, I've got the Zenith one. Just curious.
In a message dated 8/6/2010 4:45:30 P.M. Eastern Daylight Time,
dix39@charter.net writes:
You probably already know this, but just in case, the concave head riveter
is not a standard concave head but a modified one. I'm replacing all the
rivets in a 701 because the previous builder didn't use the correct head.
href="http://www.matronics.com/Navigator?Zenith701801-List">http://www.matro
nics.com/Navigator?Zenith701801-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
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href="http://www.matronics.com/Navigator?Zenith701801-List">http://www.matro
nics.com/Navigator?Zenith701801-List
===================================
ms.matronics.com/">http://forums.matronics.com
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tp://www.matronics.com/contribution">http://www.matronics.com/contribution
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Message 4
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| Subject: | Re: replacing a strut fitting |
In a message dated 8/6/2010 4:45:30 P.M. Eastern Daylight Time,
_dix39@charter.net_ (mailto:dix39@charter.net) writes:
I bought my 701 with the wings, fuse, etc assembled thinking all I had to do was
put the pieces together. When I got it home and started reading the manuals
and looking at the plans I realized things were not good, the rivets had been
installed using a flush head. I talked to Chris at Oshkosh after I learned this,
and his advise was to replace them. Mine is an older 701, so I am planning
to build it to the new higher gross while replacing rivets.
The older manual describes how to modify a full dome head to form the rivets correctly,
but I bought mine from Zenith. After I got it I pulled a few rivets using
a full dome, flush, and Zenith heads for comparison. The Zenith head looked
like a somewhat flattened and wider full dome, but much closer to a full dome
than a flush. That's the way I remember it, but that was several years ago
before other priorities interferred with airplane building.
At that point I was going to sell the 701 and everything that went with it. All
I sold was the mid time O-200 with a new ignition system, and a new Warp Drive
prop. I'm going to try a 1915 GP VW with the Valley Fngineering 1.6 : 1 redrive
simply because I found it for a price I could afford. I will miss the reliability
and power of the O-200, but the VW should be more economical and a little
lighter.
That's my story .........
Steve
---- Flydog1966@aol.com wrote:
No, not me. that was dix39. I was asking what is the difference between a
standard concave riveter head, and the Zenith modified concave rivet head.
In a message dated 8/6/2010 9:32:03 P.M. Eastern Daylight Time,
bobkat@btinet.net writes:
Holy Smokers, Flydog! Unbelievable! What a job! Are you removing
EVERY rivet and replacing them? Just curious.....
From: _Flydog1966@aol.com_ (mailto:Flydog1966@aol.com)
Sent: Friday, August 06, 2010 7:23 PM
(mailto:zenith701801-list@matronics.com)
Subject: Re: Zenith701801-List: Re: replacing a strut fitting
I did not know that. Exactly how is it different?
No worries, I've got the Zenith one. Just curious.
You probably already know this, but just in case, the concave head riveter
is not a standard concave head but a modified one. I'm replacing all the
rivets in a 701 because the previous builder didn't use the correct head.
href="http://www.matronics.com/Navigat
or?Zenith701801-List">http://www.matronics.com/Navigator?Zenith701801-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
(http://www.matronics.com/Navigator?Zenith701801-List)
(http://www.matronics.com/contribution)
Message 5
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| Subject: | Re: replacing a strut fitting |
I hope this picture helps. There are 12 3/16' bolts plus the four A5 rivets.
Bryan
--------
Bryan Ekholm
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=307866#307866
Attachments:
http://forums.matronics.com//files/gear_fitting_119.jpg
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