Today's Message Index:
----------------------
1. 05:04 AM - Re: Re: Riveting question? (Herb)
2. 05:16 AM - Re: Re: Riveting question? (mojavjoe@comcast.net)
3. 06:08 AM - Re: Re: Riveting question? (Herb)
4. 06:55 AM - Re: Re: Riveting question? (B Young)
5. 07:10 AM - Re: Re: Riveting question? (B Young)
6. 07:13 AM - Re: Re: Riveting question? (Herb)
7. 07:16 AM - Re: Re: Riveting question? (Herb)
8. 08:39 AM - Auto Pilot for less than 100 bucks... (Herb)
9. 10:32 AM - Re: Re: Riveting question? (Charlie England)
10. 01:02 PM - Re: Auto Pilot for less than 100 bucks... (t41pilot)
Message 1
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Subject: | Re: Riveting question? |
Thanks...but guess I did not make it clear...it is the drag strut
fitting plates, which attach the strut to the Spar tube and into the H
section..at the lift strut attach area... There are two gussets; the
thick one on the bottom of the wing and the curved thin one on the
side.. Herb
On 03/22/2015 09:57 PM, west1m wrote:
>
> here is another pic
>
> --------
> West1m
> Hastings, MN
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=439751#439751
>
>
> Attachments:
>
> http://forums.matronics.com//files/dragstrut2_134.jpg
>
>
Message 2
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Subject: | Re: Riveting question? |
hurb
my plans call for 1/8 1/8 steel rivets on the side gusset and 1/8 1/4=C2-
steel rivets on the bottom, these should be steel and not stainless
mojavjoe=C2-
----- Original Message -----
From: "Herb" <Herbgh@nctc.com>
Sent: Monday, March 23, 2015 8:03:56 AM
Subject: Re: Kolb-List: Re: Riveting question?
Thanks...but guess I did not make it clear...it is the drag strut
fitting plates, which =C2-attach the strut =C2-to the Spar tube and int
o the H
section..at the lift strut attach area... There are two gussets; the
thick one on the bottom of the wing and the curved thin one on the
side.. Herb
On 03/22/2015 09:57 PM, west1m wrote:
>
> here is another pic
>
> --------
> West1m
> Hastings, MN
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=439751#439751
>
>
>
>
> Attachments:
>
> http://forums.matronics.com//files/dragstrut2_134.jpg
>
>
>
>
>
>
>
===========
===========
MS -
===========
e -
=C2- =C2- =C2- =C2- =C2--Matt Dralle, List Admin.
===========
Message 3
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Subject: | Re: Riveting question? |
Thanks...
Wondering if the steel rivets are stronger in shear? Herb
On 03/23/2015 07:15 AM, mojavjoe@comcast.net wrote:
> hurb
> my plans call for 1/8 1/8 steel rivets on the side gusset and 1/8
> 1/4 steel rivets on the bottom, these should be steel and not stainless
> mojavjoe
>
> ------------------------------------------------------------------------
> *From: *"Herb" <Herbgh@nctc.com>
> *To: *"kolb-list" <kolb-list@matronics.com>
> *Sent: *Monday, March 23, 2015 8:03:56 AM
> *Subject: *Re: Kolb-List: Re: Riveting question?
>
>
> Thanks...but guess I did not make it clear...it is the drag strut
> fitting plates, which attach the strut to the Spar tube and into the H
> section..at the lift strut attach area... There are two gussets; the
> thick one on the bottom of the wing and the curved thin one on the
> side.. Herb
>
> On 03/22/2015 09:57 PM, west1m wrote:
> >
> > here is another pic
> >
> > --------
> > West1m
> > Hastings, MN
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=439751#439751
> >
> >
> >
> >
> > Attachments:
> >
> > http://forums.matronics.com//files/dragstrut2_134.jpg
> >
> >
> >
> >
> >
> >
> >
> &nbs================
>
>
> *
>
>
> *
Message 4
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Subject: | Re: Riveting question? |
My mk 3 plans show. 1/8 x1/4 rivets on 1/2 in spacing. Where drag strut
gusset attaches to Wing spar into H section my H section is uninstall
chrome Molly steel. If you have thick wall aluminium H section you will
probably need longer.
Boyd Young
On Mar 23, 2015 6:19 AM, <mojavjoe@comcast.net> wrote:
> hurb
> my plans call for 1/8 1/8 steel rivets on the side gusset and 1/8
> 1/4 steel rivets on the bottom, these should be steel and not stainless
> mojavjoe
>
> ------------------------------
> *From: *"Herb" <Herbgh@nctc.com>
> *To: *"kolb-list" <kolb-list@matronics.com>
> *Sent: *Monday, March 23, 2015 8:03:56 AM
> *Subject: *Re: Kolb-List: Re: Riveting question?
>
>
> Thanks...but guess I did not make it clear...it is the drag strut
> fitting plates, which attach the strut to the Spar tube and into the H
> section..at the lift strut attach area... There are two gussets; the
> thick one on the bottom of the wing and the curved thin one on the
> side.. Herb
>
> On 03/22/2015 09:57 PM, west1m wrote:
> >
> > here is another pic
> >
> > --------
> > West1m
> > Hastings, MN
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=439751#439751
> >
> >
> >
> >
> > Attachments:
> >
> > http://forums.matronics.com//files/dragstrut2_134.jpg
> >
> >
> >
> >
> >
> >
> >
> &nbs================
>
>
> *
>
>
> *
>
>
Message 5
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Subject: | Re: Riveting question? |
Steel would be stronger than aluminum. But I don't know between steel and
stainless steel. The stainless steel won't rust. All the pulled rivets
in my kit were stainless
Boyd
On Mar 23, 2015 7:10 AM, "Herb" <Herbgh@nctc.com> wrote:
> Thanks...
>
> Wondering if the steel rivets are stronger in shear? Herb
>
> On 03/23/2015 07:15 AM, mojavjoe@comcast.net wrote:
>
> hurb
> my plans call for 1/8 1/8 steel rivets on the side gusset and 1/8
> 1/4 steel rivets on the bottom, these should be steel and not stainless
> mojavjoe
>
> ------------------------------
> *From: *"Herb" <Herbgh@nctc.com> <Herbgh@nctc.com>
> *To: *"kolb-list" <kolb-list@matronics.com> <kolb-list@matronics.com>
> *Sent: *Monday, March 23, 2015 8:03:56 AM
> *Subject: *Re: Kolb-List: Re: Riveting question?
>
>
> Thanks...but guess I did not make it clear...it is the drag strut
> fitting plates, which attach the strut to the Spar tube and into the H
> section..at the lift strut attach area... There are two gussets; the
> thick one on the bottom of the wing and the curved thin one on the
> side.. Herb
>
> On 03/22/2015 09:57 PM, west1m wrote:
> <west1m@hotmail.com>
> >
> > here is another pic
> >
> > --------
> > West1m
> > Hastings, MN
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=439751#439751
> >
> >
> >
> >
> > Attachments:
> >
> > http://forums.matronics.com//files/dragstrut2_134.jpg
> >
> >
> >
> >
> >
> >
> >
> &nbs================
>
>
> *
>
>
> *
>
>
Message 6
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Subject: | Re: Riveting question? |
These H sections are cro molly...
I am rebuilding a set of wings...In the case of one wing the drag
strut gussets were torn out and the root rib sustained damage and I
replaced most of the ribs..... just a matter of match hole drilling a
new set of gussets...I have the match hole strap "tool"...and it should
work well..
Should be ready to cover in a day or so.. 7 rib Firestar wings.. They
will be covered and in silver , ready to paint,,and will probably be
for sale at a later date......Lift struts included..
I may try them on my "new to me" Firefly first......when and if I
make it to Conn. to retrieve it... Any ideas as to how these wings
might work on the Fly?
Herb (heading to Fastenal )
On 03/23/2015 08:54 AM, B Young wrote:
>
> My mk 3 plans show. 1/8 x1/4 rivets on 1/2 in spacing. Where drag
> strut gusset attaches to Wing spar into H section my H section is
> uninstall chrome Molly steel. If you have thick wall aluminium H
> section you will probably need longer.
> Boyd Young
>
> On Mar 23, 2015 6:19 AM, <mojavjoe@comcast.net
> <mailto:mojavjoe@comcast.net>> wrote:
>
> hurb
> my plans call for 1/8 1/8 steel rivets on the side gusset and 1/8
> 1/4 steel rivets on the bottom, these should be steel and not
> stainless
> mojavjoe
>
> ------------------------------------------------------------------------
> *From: *"Herb" <Herbgh@nctc.com <mailto:Herbgh@nctc.com>>
> *To: *"kolb-list" <kolb-list@matronics.com
> <mailto:kolb-list@matronics.com>>
> *Sent: *Monday, March 23, 2015 8:03:56 AM
> *Subject: *Re: Kolb-List: Re: Riveting question?
>
> <mailto:Herbgh@nctc.com>>
>
> Thanks...but guess I did not make it clear...it is the drag strut
> fitting plates, which attach the strut to the Spar tube and into
> the H
> section..at the lift strut attach area... There are two gussets; the
> thick one on the bottom of the wing and the curved thin one on the
> side.. Herb
>
> On 03/22/2015 09:57 PM, west1m wrote:
> <mailto:west1m@hotmail.com>>
> >
> > here is another pic
> >
> > --------
> > West1m
> > Hastings, MN
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=439751#439751
> >
> >
> >
> >
> > Attachments:
> >
> > http://forums.matronics.com//files/dragstrut2_134.jpg
> >
> >
> >
> >
> >
> >
> >
> &nbs================
>
>
> *
>
> get="_blank">http://www.matronics.com/Navigator?Kolb-List
> tp://forums.matronics.com
> _blank">http://www.matronics.com/contribution
>
> *
>
> *
>
>
> *
Message 7
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Subject: | Re: Riveting question? |
As I recall...the early Kolbs used steel rivets...and they worked very
well..and the galvanic corrosion was not a problem as some thought...I
rebuilt a MkIII and Ultrastar and both used steel rivets..Herb
On 03/23/2015 09:09 AM, B Young wrote:
>
> Steel would be stronger than aluminum. But I don't know between
> steel and stainless steel. The stainless steel won't rust. All
> the pulled rivets in my kit were stainless
> Boyd
>
> On Mar 23, 2015 7:10 AM, "Herb" <Herbgh@nctc.com
> <mailto:Herbgh@nctc.com>> wrote:
>
> Thanks...
>
> Wondering if the steel rivets are stronger in shear? Herb
>
> On 03/23/2015 07:15 AM, mojavjoe@comcast.net
> <mailto:mojavjoe@comcast.net> wrote:
>> hurb
>> my plans call for 1/8 1/8 steel rivets on the side gusset and 1/8
>> 1/4 steel rivets on the bottom, these should be steel and not
>> stainless
>> mojavjoe
>>
>> ------------------------------------------------------------------------
>> *From: *"Herb" <Herbgh@nctc.com> <mailto:Herbgh@nctc.com>
>> *To: *"kolb-list" <kolb-list@matronics.com>
>> <mailto:kolb-list@matronics.com>
>> *Sent: *Monday, March 23, 2015 8:03:56 AM
>> *Subject: *Re: Kolb-List: Re: Riveting question?
>>
>> <mailto:Herbgh@nctc.com>
>>
>> Thanks...but guess I did not make it clear...it is the drag strut
>> fitting plates, which attach the strut to the Spar tube and
>> into the H
>> section..at the lift strut attach area... There are two gussets; the
>> thick one on the bottom of the wing and the curved thin one on the
>> side.. Herb
>>
>> On 03/22/2015 09:57 PM, west1m wrote:
>> <mailto:west1m@hotmail.com>
>> >
>> > here is another pic
>> >
>> > --------
>> > West1m
>> > Hastings, MN
>> >
>> >
>> >
>> >
>> > Read this topic online here:
>> >
>> > http://forums.matronics.com/viewtopic.php?p=439751#439751
>> >
>> >
>> >
>> >
>> > Attachments:
>> >
>> > http://forums.matronics.com//files/dragstrut2_134.jpg
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> &nbs================
>>
>>
>>
>>
>> *
>>
>>
>> *
>
> *
>
> get="_blank">http://www.matronics.com/Navigator?Kolb-List
> tp://forums.matronics.com
> _blank">http://www.matronics.com/contribution
>
> *
>
> *
>
>
> *
Message 8
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|
Subject: | Auto Pilot for less than 100 bucks... |
On another subject....
spent my career in the computer business...Hardware and little
software...too little software...for computer hardware is sold like
candy bars...and the real emphasis is in programming..
always interested in computers...built my first one in the
1970's...Motorolla 6800 chip..running at a blazing 1 mhz...:-) 1 k of
memory...hot stuff!!!
that said....I bought two credit card sized computers...one called
Ardunio and the other is a Raspberry Pi... The Ardunio has had many
additional plug "on" logic boards built for it...One of interest is
called the 10DOF...It encompasses a three axis accelerometer.. three
axis gyroscope.. a compass(magnetometer) and a barometer that can serve
as an altimeter... GPs boards are also available.
I believe that many of the "so called" drones use a similar device
that can be bought from hobby shops.. for a lot more money...the 10dof
cost about 30 bucks...and Chinese clones(9DOF) sell for 12 or so...The
Ardunio knock off's sell for 8 bucks...I bought the Fundunio...:-) All
to be found on Ebay.... Lots of canned software....and much info on You
tube..and elsewhere..
Pretty sure the C band satellite servo's , available from your
neighbors yard for free would have enough power to operate trim tabs..
Or large hobby ones..for more money..
wondering if anyone else has thought of trying one on a Kolb...with
strong servo's on the trim tabs...it should be possible to fly long
distances with minimal input...naturally, rough air would throw it
off...and cause gyrations as happens on "real planes" with auto pilots
...:-) Herb
Message 9
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Subject: | Re: Riveting question? |
Most steels are stronger than stainless. Stainless is usually 'tougher',
but has less strength than high carbon steel. If you do a little
googling, you can find charts that show both shear and tension strength
of rivets all kinds & materials.
I fly heavier (won't say 'bigger' to avoid offending John H) homebuilts,
and in that world, most of us are pretty careful about deviating from
the designer's instructions in structural areas. There can even be
situations where 'stronger' may actually increase risk of failure in the
overall structure, so following the designer's specs is the safest path,
unless we are at least as qualified at engineering as he was. :-)
Charlie
On 3/23/2015 9:09 AM, B Young wrote:
>
> Steel would be stronger than aluminum. But I don't know between
> steel and stainless steel. The stainless steel won't rust. All
> the pulled rivets in my kit were stainless
> Boyd
>
> On Mar 23, 2015 7:10 AM, "Herb" <Herbgh@nctc.com
> <mailto:Herbgh@nctc.com>> wrote:
>
> Thanks...
>
> Wondering if the steel rivets are stronger in shear? Herb
>
> On 03/23/2015 07:15 AM, mojavjoe@comcast.net
> <mailto:mojavjoe@comcast.net> wrote:
>> hurb
>> my plans call for 1/8 1/8 steel rivets on the side gusset and 1/8
>> 1/4 steel rivets on the bottom, these should be steel and not
>> stainless
>> mojavjoe
>>
>> ------------------------------------------------------------------------
>> *From: *"Herb" <Herbgh@nctc.com> <mailto:Herbgh@nctc.com>
>> *To: *"kolb-list" <kolb-list@matronics.com>
>> <mailto:kolb-list@matronics.com>
>> *Sent: *Monday, March 23, 2015 8:03:56 AM
>> *Subject: *Re: Kolb-List: Re: Riveting question?
>>
>> <mailto:Herbgh@nctc.com>
>>
>> Thanks...but guess I did not make it clear...it is the drag strut
>> fitting plates, which attach the strut to the Spar tube and
>> into the H
>> section..at the lift strut attach area... There are two gussets; the
>> thick one on the bottom of the wing and the curved thin one on the
>> side.. Herb
>>
>> On 03/22/2015 09:57 PM, west1m wrote:
>> <mailto:west1m@hotmail.com>
>> >
>> > here is another pic
>> >
>> > --------
>> > West1m
>> > Hastings, MN
>> >
>> >
>> >
>> >
>> > Read this topic online here:
>> >
>> > http://forums.matronics.com/viewtopic.php?p=439751#439751
>> >
>
Message 10
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|
Subject: | Re: Auto Pilot for less than 100 bucks... |
Back when I was building my firefly, I thought of installing electric trim for
an elevator tab. I did some research on RC servos and wind loads. I took worst
case scenarios for a trim tab at 90 degrees to the airflow and found that sail
winch servos for boats had more than enough torque to do the job. I came up
with a circuit using a 555 timer and a bargraph to show position of the trim tab
(assuming no mechanical failure of the linkage). I never installed the system
though so have no actual flight data but in theory it could work. Arduino
already has sketches for servos and 10dof sensors since robots have become so
prolific, so I'm sure if you put your mind to it, it could be done. I have used
arduino circuits in my plane in other capacities such as strobe lights and capacitive
fuel indicator with a bargraph. I'm just installing the arduino version
fuel indicator now. My analog version worked just fine but I got bored over
the winter and had to invent a new one with a larger, brighter display. My circuits
for the plane as well as links to my Youtube videos can be found on my
web page.
http://myplace.frontier.com/~t41pilot/index.html
--------
Gregg Kaat
2011 Firefly
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=439798#439798
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