Today's Message Index:
----------------------
1. 12:42 AM - Bad wing rib to spar rivets (Warren W Hurd)
2. 06:45 AM - IFR in RV-9A (ivo welch)
3. 06:52 AM - Re: Bad wing rib to spar rivets (Jerry Calvert)
4. 07:09 AM - Re: Bad wing rib to spar rivets (fcs@jlc.net)
5. 08:33 AM - Riveting (Boyd Butler)
6. 01:08 PM - Re: RV9 (Gkb5577@aol.com)
7. 01:35 PM - Virii (Rob W M Shipley)
8. 08:49 PM - [ Henry Hore ] : New Email List Photo Share Available! (Email List Photo Shares)
9. 09:19 PM - New Dimpling Tool (DRDT-1) shipping soon (Merems)
Message 1
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Matronics RV9 List <rv9-list@matronics.com>
| Subject: | Bad wing rib to spar rivets |
--> RV9-List message posted by: Warren W Hurd <warren@ahyup.com>
I have been happy with most of my rivets until now. During the riveting
of the wing ribs to the main wing spar I badly deformed some of the
factory rivet heads. See them at http://www.ahyup.com/Rivet/ To make the
rivets I used a 2X gun at about 60 psi. It would take 3 to 4 seconds to
make the shop head to my satisfaction. I was paying much to much
attention to the shop head and ignoring the factory head.
I also made some smileys in the ribs. What should I do to make this
better?
Warren Hurd
90454 Wings
http://www.ahyup.com
Mushroomed Rivets
Message 2
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--> RV9-List message posted by: ivo welch <ivo.welch@yale.edu>
I think I would be fairly reluctant to do IFR in an aerobatic RV (1-8).
However, the RV9 is "almost" ideal for IFR. It is a beautifully stable
and easy to control airplane. I am currently getting IFR instructions
from a master CFI here in CT, and he is very impressed with the
airplane. I can affirmatively state that the RV-9A is very suitable.
There is only one drawback to an RV-9, compared to other small piston
planes, such as a cherokee: it is very easy to gain 50-100' of
altitude. Remember: the 9A has "almost bad glider" characteristics. It
really wants to fly. This is a minor drawback.
Now, another question is how safe is hard IFR for a single pilot in any
small airplane. The answer must be "not very." I would not fly IFR
unless I had three conditions met. First, independent main instrument
systems (gyro, alt, etc.). The partial panel on the IFR test forgets
recognizing that a gyro has failed. My guess is by the time you do
recognize this in real busy IFR flight, you would be in deep dodo. This
is easily avoided if you have an EFIS that affirmatively recognizes
trouble (e.g., against magnetic+GPS input), or if you have an EFIS+AI
that you use in your scan. The Dynon, IMHO, is the ideal instrument to
provide this safety margin. Second, I would insist on an autopilot and
alt-hold. The ideal system has the plane fly itself, and you as the
pilot watching over what the plane is flying, so that you are the
cross-check. This gives you the time to pay attention to everything
necessary and reduce mistakes. Finally, anyone flying IFR without a
good GPS nowadays should have his/her head examined.
What I find interesting is how far my ideas of safety diverge from the
FAA's idea of safety. So, while I would make a Dynon-type $2,200
instrument an additional requirement, the FAA not only is neutral, but
outright discourages it (this is in certificated airplanes). The
ability to buy reasonably priced avionics is my biggest reason for
preferring homebuilts to certificated airplanes. You put a lot of
reasonable people with the best intent into one big organization (called
the FAA), and what comes out is an often counterproductive mess. The
only saving grace is that some individuals inside the FAA spend their
personal time and effort to help.
Regards,
/iaw
Message 3
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| Subject: | Re: Bad wing rib to spar rivets |
--> RV9-List message posted by: "Jerry Calvert" <rv6@cox.net>
Check the rivet set to make sure it is correct size cup for the rivet.
Looks like the cup size may be too small. If the set is correct size, use
more hand pressure on gun to keep it from bouncing. Make sure the set is
not at an angle to the centerline of the rivet.
Jerry Calvert
Edmond Ok
RV6 N296JC res
----- Original Message -----
From: "Warren W Hurd" <warren@ahyup.com>
Subject: RV9-List: Bad wing rib to spar rivets
> --> RV9-List message posted by: Warren W Hurd <warren@ahyup.com>
>
> I have been happy with most of my rivets until now. During the riveting
> of the wing ribs to the main wing spar I badly deformed some of the
> factory rivet heads. See them at http://www.ahyup.com/Rivet/ To make the
> rivets I used a 2X gun at about 60 psi. It would take 3 to 4 seconds to
> make the shop head to my satisfaction. I was paying much to much
> attention to the shop head and ignoring the factory head.
> I also made some smileys in the ribs. What should I do to make this
> better?
>
> Warren Hurd
> 90454 Wings
> http://www.ahyup.com
> Mushroomed Rivets
>
Message 4
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| Subject: | Re: Bad wing rib to spar rivets |
--> RV9-List message posted by: "fcs@jlc.net" <fcs@jlc.net>
When squeezing the trigger, don't just squeeze it once and hold it for
the number of seconds you feel it will take. Once the gun starts to
bounce, it will rapidly bounce out of control. Instead try this. Squeeze
the trigger in short bursts. Count one, two, three, four, five, squeezing
the trigger each time you count. This doesn't take any longer and results
in far less bounce damage should you slip. The objective of course is not
to slip to begin with, but this technique will help a lot. I was taught to
use this method by the "old man" of our sheetmetal shop at the airline I
used to work for. You won't find smileys on my plane, so I can vouch for
its effectiveness. Don't just leave the smileys, drill them out and fix
them. If the damage is to the metal, at least try to gently tap it flat
again.
Message 5
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--> RV9-List message posted by: "Boyd Butler" <linbb@worldnet.att.net>
When I did my riveting,both while working for an aircraft company and on my airplane,
one was correct rivet set, two hold it tight against the rivet head,
three don't look at the bucking bar once its in place use your fingers to feel
it and keep it in proper position,concentrate on the rivet gun end of the operation,correct
angle to the head as it looks like you were tilting the gun,also
once am ready to drive try to drive it in one burst not several small ones as
that hardens the rivet and makes it harder to drive. Never use angled rivet
sets unless there is no other way to do it as they are a bad deal at the best
and only for those very few times when you need them. Do not use one of those
cheep rivet guns that are actually muffler cutters as they don't work either.
I wish you luck, look at factory rivets before you drill anything out as bad.
When drilling those out try to just drill the center of the head off, then while
supporting the back side use a punch to drive the rest out, remember support
the back side as close to the rivet as possible. I do hope our ideas help.
Boyd Butler
Boyd Butler
Message 6
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--> RV9-List message posted by: Gkb5577@aol.com
Boyd: I'm Geoff Bowman, am starting to look for another project: considering
a RV/ Cozy/ ongEZ---do you have any tips/ pointers or food for thought for me?
Appreciate it Geoff
Message 7
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--> RV9-List message posted by: "Rob W M Shipley" <rob@robsglass.com>
From: "L. Mark Thomasson" <lmthomasson@adelphia.net>
Subject: RV9-List: WORM SWEN_A
--> RV9-List message posted by: "L. Mark Thomasson" <lmthomasson@adelphia.net>
My anti-virus is catching 8 to 10 messages a day with the Worm SWEN_A attached. Will everybody please at least run the free virus checker at www.antivirus.com and remove the worm from your system if you have it.
Much better would be to download the FREE antivirus software from AVG. www.grisoft.com
This is an outstanding product and gives the lie to that old saw "There ain't no
such thing as a free lunch".
Rob
Rob W M Shipley
RV9A N919RV (res) Fuselage
Message 8
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| Subject: | [ Henry Hore ] : New Email List Photo Share Available! |
--> RV9-List message posted by: Email List Photo Shares <pictures@matronics.com>
A new Email List Photo Share is available:
Poster: Henry Hore <elsa-henry@darlor-watch.com>
Subject: Rivet-gun double off-set holder for one hand operation.
http://www.matronics.com/photoshare/elsa-henry@darlor-watch.com.09.28.2003/index.html
o Main Photo Share Index
http://www.matronics.com/photoshare
o Submitting a Photo Share
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following information along with your email message and files:
1) Email List or Lists that they are related to:
2) Your Full Name:
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4) One line Subject description:
5) Multi-line, multi-paragraph description of topic:
6) One-line Description of each photo or file:
Email the information above and your files and photos to:
pictures@matronics.com
Message 9
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<rv7-list@matronics.com>, <rv8list@yahoogroups.com>,
<RV-9A@yahoogroups.com>, <rv9-list@matronics.com>
| Subject: | New Dimpling Tool (DRDT-1) shipping soon |
--> RV9-List message posted by: "Merems" <merems@cox.net>
Fellow RV Builders,
I have developed a new dimpling tool (DRDT-1) that is easier, faster, quieter, and safer (on the skins) then any other tool offered by existing aircraft tool suppliers. I have designed it to accommodate all the skins used in a RV construction including the prebent leading and trailing edge skins. It has been designed to accommodate the larger skins used in the RV-10. Please visit ExperimentalAero at www.experimentalaero.com.
On this website you will also find innovative tools and components under development
for your experimental aircraft project.
Paul Merems
ExperimentalAero
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