Today's Message Index:
----------------------
1. 05:22 AM - Re: Re: Kolb air airworthiness directive (John Hauck)
2. 07:45 AM - Re: Re: Kolb air airworthiness directive (George Helton)
3. 08:17 AM - Re: Re: Kolb air airworthiness directive (John Hauck)
4. 06:41 PM - Fly-in (Larry Cottrell)
5. 06:47 PM - Re: Fly-in (John Hauck)
6. 06:53 PM - Re: Fly-in (Larry Cottrell)
Message 1
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Subject: | Re: Kolb air airworthiness directive |
I was concerned when I got my FS kit, late 1985 or early 86, to discover the butt
welded pivot bolt on the aileron bell crank with no bracing. I designed a
strap brace to stabilize that pivot bolt. Looked a lot like what Kolb came up
with at a later date. Never had a problem with it.
john h
mkIII
Titus, Alabama
-----Original Message-----
From: owner-kolb-list-server@matronics.com [mailto:owner-kolb-list-server@matronics.com] On Behalf Of wakataka
Sent: Monday, August 12, 2019 7:24 PM
Subject: Kolb-List: Re: Kolb air airworthiness directive
I just received the parts and am in the process of installing them. The parts do
the same job as that welded brace on your plane, so you should be good, assuming
that both bellcranks have a similar brace as in the photo. Your brace is
at least as strong as the the ones provided in the kit from Kolb.
My plane has no braces attached to the end of the bellcrank pivot bolts. I can
see how the bolt or the weld could be weakened over time due to the repeated bending
loads from the bellcrank.
The kit from Kolb includes two braces and the pop rivets needed to attach them
to the root tube. The rivet holes are not drilled in the braces. One of the braces
needed to be modified with a rotary file in order to fit on my 1985 Firestar.
On my airframe, there's a little piece of tubing that secures the fuel tank
welded about 3/4" away from the aileron bell crank. The new bracket needs to
be filed down by at least 1/4" in order to clear the fuel tank brace tube. I
think I can make the Kolb bracket work. If not, I guess I'll weld on a bracket
like yours.
I applaud Kolb for taking the initiative to identify and engineer a fix for this
problem.
--------
There is something fascinating about science. One gets such wholesale returns of
conjecture out of such a trifling investment of fact.
Mark Twain
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=490817#490817
Message 2
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Subject: | Re: Kolb air airworthiness directive |
I did this modification about four years ago on my original Firestar. The on
ly thing you might have change is the castle nuts. I had to go to half castl
es because the welded studs( bolts ) were just a bit short. This is a must d
o mod. for anyone who hasn=99t done it yet.
Are you back home, John?
George H.
Firestar 1986, Hirth 2702
14GDH
Mesick, Michigan
gdhelton@gmail.com
Sent from my iPhone
> On Aug 13, 2019, at 8:21 AM, John Hauck <jhauck36@outlook.com> wrote:
>
>
> I was concerned when I got my FS kit, late 1985 or early 86, to discover t
he butt welded pivot bolt on the aileron bell crank with no bracing. I desi
gned a strap brace to stabilize that pivot bolt. Looked a lot like what Kol
b came up with at a later date. Never had a problem with it.
>
> john h
> mkIII
> Titus, Alabama
>
>
>
>
> -----Original Message-----
> From: owner-kolb-list-server@matronics.com [mailto:owner-kolb-list-server@
matronics.com] On Behalf Of wakataka
> Sent: Monday, August 12, 2019 7:24 PM
> To: kolb-list@matronics.com
> Subject: Kolb-List: Re: Kolb air airworthiness directive
>
>
> I just received the parts and am in the process of installing them. The pa
rts do the same job as that welded brace on your plane, so you should be goo
d, assuming that both bellcranks have a similar brace as in the photo. Your b
race is at least as strong as the the ones provided in the kit from Kolb.
>
> My plane has no braces attached to the end of the bellcrank pivot bolts. I
can see how the bolt or the weld could be weakened over time due to the rep
eated bending loads from the bellcrank.
>
> The kit from Kolb includes two braces and the pop rivets needed to attach t
hem to the root tube. The rivet holes are not drilled in the braces. One of t
he braces needed to be modified with a rotary file in order to fit on my 198
5 Firestar. On my airframe, there's a little piece of tubing that secures th
e fuel tank welded about 3/4" away from the aileron bell crank. The new brac
ket needs to be filed down by at least 1/4" in order to clear the fuel tank b
race tube. I think I can make the Kolb bracket work. If not, I guess I'll we
ld on a bracket like yours.
>
> I applaud Kolb for taking the initiative to identify and engineer a fix fo
r this problem.
>
> --------
> There is something fascinating about science. One gets such wholesale retu
rns of conjecture out of such a trifling investment of fact.
>
> Mark Twain
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=490817#490817
>
>
>
>
>
>
>
>
>
>
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>
>
>
Message 3
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Subject: | Re: Kolb air airworthiness directive |
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Message 4
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I want to remind every one of our annual Rock House Fly-in again, Sept 7th
till we drop. all on this list are welcome regardless of what you fly. 42
40.419 N-- 117 51.198 W
Larry
--
*The older I get, the less tolerant I am of those who are intolerant of
others.*
*If you forward this email, or any part of it, please remove my email
address before sending.*
Message 5
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Message 6
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eagerly waiting for one and all.
Larry
On Tue, Aug 13, 2019 at 7:49 PM John Hauck <jhauck36@outlook.com> wrote:
> How about a 2012 RAM SLT Crew Cab Long Bed 4WD with 5th wheel and RZR?
>
>
> I can almost get it to fly, but not quite.
>
>
> I'll be there Lord willing and the creek don't rise.
>
>
> john h
>
> mkIII
>
> Titus, Alabama
>
>
> *From:* owner-kolb-list-server@matronics.com [mailto:
> owner-kolb-list-server@matronics.com] *On Behalf Of *Larry Cottrell
> *Sent:* Tuesday, August 13, 2019 8:40 PM
> *To:* kolb-list@matronics.com
> *Subject:* Kolb-List: Fly-in
>
>
> I want to remind every one of our annual Rock House Fly-in again, Sept 7th
> till we drop. all on this list are welcome regardless of what you fly. 42
> 40.419 N-- 117 51.198 W
>
>
> Larry
>
>
> --
>
> *The older I get, the less tolerant I am of those who are intolerant of
> others.*
>
>
> *If you forward this email, or any part of it, please remove my email
> address before sending.*
>
--
*The older I get, the less tolerant I am of those who are intolerant of
others.*
*If you forward this email, or any part of it, please remove my email
address before sending.*
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