Today's Message Index:
----------------------
1. 07:15 AM - Microfasteners Torx Screws (LarryRobertHelming)
2. 08:18 PM - Back up to Dynon (Darwin N. Barrie)
3. 09:31 PM - SEC: UNCLASSIFIED E: Back up to Dynon (Francis, David CMDR)
Message 1
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| Subject: | Microfasteners Torx Screws |
--> RV7-List message posted by: "LarryRobertHelming" <lhelming@sigecom.net>
Torx Screw Torx Screws
----- Original Message -----
From: John Fleisher
Subject: Re: Please comment on this discussion found below
1. The 8-32 screws before the change had a T20 recess, after have T15. Much
simpler way to be sure which ones you have than a torque test.
2. The threads are rolled, not cut.
3. Inserting stainless steel screws into the carbon steel locknuts used on
nutplates is difficult. Galling occurs. This is almost surely the reason
that you need Torx type drive in the first place; without the seizing up
that happens between stainless and carbon steel, phillips drive would be
more than adequate. Nutplates with anti-seizing compound installed by the
manufacturer are available, as is the compound itself; using it might help
reduce problems.
4. Torx is a registered trademark of Camcar Division of Textron. The basic
patent on the original torx design has expired. Many manufacturers,
including the manufacturer of our screws, make equivalent screws, calling
them 6-lobe or star drive.
It looks as if the email chain we're responding to here started earlier; if
there are other issues, we would be glad to try to respond. Thanks for
passing this to us for comment.
John Fleisher
Micro Fasteners Inc
24 Cokesbury Rd Ste 2
Lebanon, NJ 08833
800-892-6917
----- Original Message -----
From: LarryRobertHelming
To: info@microfasteners.com
Sent: Wednesday, February 25, 2004 7:00 AM
Subject: Please comment on this discussion
Interesting. I bought some about 18 months ago. How would anyone who
bought these before the change over know if they got screws with the bad
design that the heads twist off of or the new improved ones. Is there a
torque range for testing their strength? I understand these screws are not
structural. And the threads are not rolled but cut in. Someone with
knowledge please correct any of this that is wrong.
Indiana Larry
----- Original Message -----
From: "Ron Calhoun" <roncal@earthlink.net>
To: <rv-list@matronics.com>
Sent: Tuesday, February 24, 2004 6:44 PM
Subject: RE: RV-List: Screws
> --> RV-List message posted by: "Ron Calhoun" <roncal@earthlink.net>
>
> Mickey, these were made especially for the rv list. The first batch
> heads twisted off, but they replaced all orders with new ones with
> smaller torx. And will probably use then everywhere else
> when I paint.
> You can go direct to them at
> http://www.microfasteners.com/catalog/products/SSCFCMXS.cfm
>
> They are listed as 6 lobe drive screws, but are Torx. I suspect it has
> something to do with avoiding royalty payments for using the trademarked
> name "Torx".
>
> Ron Calhoun
> RV-4
> -----Original Message-----
> From: owner-rv-list-server@matronics.com
> [mailto:owner-rv-list-server@matronics.com] On Behalf Of Mickey Coggins
> To: rv-list@matronics.com
> Subject: RV-List: Screws
>
>
> --> RV-List message posted by: Mickey Coggins <mick-matronics@rv8.ch>
>
> Hi,
>
> While installing the phillips screws into the various nutplates, I got
> to asking myself if there are aviation quality Torx screws that could be
> used instead. Does anyone know of a supplier for Torx or at a minimum
> some other type of hex head screw that won't slip off?
>
> I even used Torx on my workbenches - they are great.
>
> Thanks,
> Mickey
>
> PS: In case you don't know what the heck I'm talking
> about, here is a photo:
>
> http://rv8.ch/gallery/view_photo.php?set_albumName=workshop&id=DSCN7925
>
> or in case that wraps on your screen:
>
> http://www.rv8.ch/albums/workshop/DSCN7925.jpg
>
>
> --
> Mickey Coggins
> http://www.rv8.ch/
> #82007 QB Wings/Fuselage
Message 2
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<RV7and7A@yahoogroups.com>
| Subject: | Back up to Dynon |
--> RV7-List message posted by: "Darwin N. Barrie" <ktlkrn@cox.net>
Hi All,
Trying to finalize the panel. I have spec'd in the Dynon and would like to know
what others are using or planning on using for backups.
At this point I have penciled in a 2.25" Alt, AS, T&B, and VSI. Sound reasonable?
Darwin N. Barrie
Chandler AZ
Message 3
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| Subject: | Back up to Dynon |
--> RV7-List message posted by: "Francis, David CMDR" <David.Francis@defence.gov.au>
Darwin, add in a compass and your selection will comply with the FAA regs
for IFR "standby" limited panel. If you keep up a high level of skill in
flying on a limited panel (that is no artificial horizon) then you will
live. You might consider adding in a second AH, in which case you can delete
the T&B, live longer and be just a little poorer.
Now if you add up the total bill, it might look very close to the cost of a
second Dynon. If you have a second electrical power source now you have a
very economical and very safe IFR package.
If you are intending VFR ops only, then you need no standby instruments at
all, you will never be without a horizon and have a bigger bank account.
Regards, David Francis, Canberra, Australia.
-----Original Message-----
From: Darwin N. Barrie [mailto:ktlkrn@cox.net]
RV7and7A@yahoogroups.com
Subject: RV7-List: Back up to Dynon
--> RV7-List message posted by: "Darwin N. Barrie" <ktlkrn@cox.net>
Hi All,
Trying to finalize the panel. I have spec'd in the Dynon and would like to
know what others are using or planning on using for backups.
At this point I have penciled in a 2.25" Alt, AS, T&B, and VSI. Sound
reasonable?
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