Today's Message Index:
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1. 01:36 PM - Re:Harbor Freight Riveter problems ()
2. 01:50 PM - Re: Re:Harbor Freight Riveter problems (George Swinford)
3. 02:12 PM - Re: Re:Harbor Freight Riveter problems (Larry McFarland)
4. 02:17 PM - Re: Re:Harbor Freight Riveter problems (Jim Belcher)
5. 02:43 PM - Email addresses compromised (Jim Belcher)
6. 04:12 PM - Re: Re:Harbor Freight Riveter problems ()
7. 04:24 PM - Re: Re:Harbor Freight Riveter problems (FLYaDIVE)
8. 05:22 PM - Re: Re:Harbor Freight Riveter problems (Jeff)
Message 1
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| Subject: | Re:Harbor Freight Riveter problems |
Folks;
If someone understands why Zenith uses flush blind rivits and reforms them
in the riviting process to a 'domed head' rivit, please elaborate on the
reasons.It just seems to me (yes, it's true, I'm a noobe and haven't started
a plane yet) that it would be much simpler to just use domed head pull
rivits - or maybe that's a dumb assumption.
Thanks in advance.
-- Keith
Message 2
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| Subject: | Re:Harbor Freight Riveter problems |
Hello, Keith:
I remember reading Chris Heintz' explanation of his use of modified Avex
rivets, some years back. He had a good reason for doing so. I'm sure a
call to the factory would get you the information. Perhaps it's in an old
issue of Zenith News.
George Swinford
\
----- Original Message -----
From: <klburris@frontiernet.net>
Sent: Saturday, October 16, 2010 1:28 PM
Subject: Zenith-List: Re:Harbor Freight Riveter problems
>
> Folks;
> If someone understands why Zenith uses flush blind rivits and reforms them
> in the riviting process to a 'domed head' rivit, please elaborate on the
> reasons.It just seems to me (yes, it's true, I'm a noobe and haven't
> started a plane yet) that it would be much simpler to just use domed head
> pull rivits - or maybe that's a dumb assumption.
> Thanks in advance.
>
> -- Keith
>
>
>
Message 3
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| Subject: | Re:Harbor Freight Riveter problems |
Hi Keith,
The domed heads have advantage as the head is drawn from a recess head to
the domed condition. The rivet grips aluminum better long term as the
strength is increased during the draw. The aircraft is not
a fast destination plane in general terms. The domed heads don't add drag to
any extent for the speeds we require, at least 150 mph or less. The thin
materials that are used in Zenith aircraft would also look
excessively bumpy between flush rivets. I used .020 and .025 to get around
the issue and improved surfaces in the sheet aluminum. This is not uncommon
even in flush riveted standard aircraft either if you look closely.
Repair of pulled rivets is considerably easier. Poorly set pulled rivets
can easily be drilled out where dimpled flush rivets as solid types present
more serious issues for repair. Once you get into it, you realize the
rivets don't really subtract from the plane. If you feel flush rivets are a
better solution, you should really consider building a RV or other type
designed for them. Do expect to spend a lot more time in the build process.
Best regards,
Larry McFarland 601HDS at www.macsmachine.com
-----Original Message-----
From: owner-zenith-list-server@matronics.com
[mailto:owner-zenith-list-server@matronics.com] On Behalf Of
klburris@frontiernet.net
Sent: Saturday, October 16, 2010 3:28 PM
Subject: Zenith-List: Re:Harbor Freight Riveter problems
Folks;
If someone understands why Zenith uses flush blind rivits and reforms them
in the riviting process to a 'domed head' rivit, please elaborate on the
reasons.It just seems to me (yes, it's true, I'm a noobe and haven't started
a plane yet) that it would be much simpler to just use domed head pull
rivits - or maybe that's a dumb assumption.
Thanks in advance.
-- Keith
Message 4
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| Subject: | Re:Harbor Freight Riveter problems |
On Saturday 16 October 2010 15:28:13 you wrote:
>
> Folks;
> If someone understands why Zenith uses flush blind rivits and reforms them
> in the riviting process to a 'domed head' rivit, please elaborate on the
> reasons.It just seems to me (yes, it's true, I'm a noobe and haven't
> started a plane yet) that it would be much simpler to just use domed head
> pull rivits - or maybe that's a dumb assumption.
> Thanks in advance.
My understanding was that flush blind rivets (specifically, Avex rivets) were
used to simplify construction. The domed head was to increase the strength, by
pulling the body of the rivet tighter.
Mind you, I'm out of my area of expertise. That's just what I remember.
--
=======================================
Jim B. Belcher
BS,MS Physics, Math, Computer Science
A&P/IA
General Radio Telephone Certificate
Instrument Rated Pilot
Retired Aerospace Technical Manager
=======================================
Message 5
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| Subject: | Email addresses compromised |
I've started receiving spam at the unique address I supplied this mailing list
(again). That means someone has most likely gone through the list, and
collected all the email addresses.
As a result, I've changed the address I use to subscribe to this list, and
deleted the old address. If you email me, please make not of the new address.
=======================================
Jim B. Belcher
BS,MS Physics, Math, Computer Science
A&P/IA
General Radio Telephone Certificate
Instrument Rated Pilot
Retired Aerospace Technical Manager
=======================================
Message 6
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| Subject: | Re:Harbor Freight Riveter problems |
yes, there really is a reason. It was written somewhere in Zenith's
pages, can't remember where. They recommend using countersunk rivets
and the domed puller head so that, as the head is rounded, it
work-hardens the rivet head. Makes it tougher.
Paul R
----- Original Message -----
From: klburris@frontiernet.net<mailto:klburris@frontiernet.net>
To: zenith-list@matronics.com<mailto:zenith-list@matronics.com>
Sent: Saturday, October 16, 2010 3:28 PM
Subject: Zenith-List: Re:Harbor Freight Riveter problems
<klburris@frontiernet.net<mailto:klburris@frontiernet.net>>
Folks;
If someone understands why Zenith uses flush blind rivits and reforms
them
in the riviting process to a 'domed head' rivit, please elaborate on
the
reasons.It just seems to me (yes, it's true, I'm a noobe and haven't
started
a plane yet) that it would be much simpler to just use domed head pull
rivits - or maybe that's a dumb assumption.
Thanks in advance.
-- Keith
http://www.matronics.com/Navigator?Zenith-List<http://www.matronics.com/N
avigator?Zenith-List>
http://www.matronics.com/contribution<http://www.matronics.com/contributi
on>
Message 7
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| Subject: | Re:Harbor Freight Riveter problems |
Good Question Keith;
But WHY domed rivets at all! Dimple the skin and rib and use FLAT HEAD.
That is what I would like to do --- I will be making the cal or sending an
email to find out WHY NOT!
Barry
On Sat, Oct 16, 2010 at 4:28 PM, <klburris@frontiernet.net> wrote:
>
> Folks;
> If someone understands why Zenith uses flush blind rivits and reforms them
> in the riviting process to a 'domed head' rivit, please elaborate on the
> reasons.It just seems to me (yes, it's true, I'm a noobe and haven't started
> a plane yet) that it would be much simpler to just use domed head pull
> rivits - or maybe that's a dumb assumption.
> Thanks in advance.
>
> -- Keith
>
>
--
Barry
"Chop'd Liver"
Message 8
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| Subject: | Re:Harbor Freight Riveter problems |
At least part of it is that when the head is reshaped as it is pulled with
the modified rivet head, the metal is work hardened and becomes stronger.
Jeff Davidson
-----Original Message-----
From: owner-zenith-list-server@matronics.com
[mailto:owner-zenith-list-server@matronics.com] On Behalf Of George Swinford
Sent: Saturday, October 16, 2010 4:48 PM
Subject: Re: Zenith-List: Re:Harbor Freight Riveter problems
Hello, Keith:
I remember reading Chris Heintz' explanation of his use of modified Avex
rivets, some years back. He had a good reason for doing so. I'm sure a
call to the factory would get you the information. Perhaps it's in an old
issue of Zenith News. do not archive
George Swinford
\
----- Original Message -----
From: <klburris@frontiernet.net>
Sent: Saturday, October 16, 2010 1:28 PM
Subject: Zenith-List: Re:Harbor Freight Riveter problems
>
> Folks;
> If someone understands why Zenith uses flush blind rivits and reforms them
> in the riviting process to a 'domed head' rivit, please elaborate on the
> reasons.It just seems to me (yes, it's true, I'm a noobe and haven't
> started a plane yet) that it would be much simpler to just use domed head
> pull rivits - or maybe that's a dumb assumption.
> Thanks in advance.
>
> -- Keith
>
>
>
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