Today's Message Index:
----------------------
1. 03:48 AM - Re: SB 14-08-29 and life of nose shock disks (Greg McFarlane)
2. 06:15 AM - F-10108A Support Bracket Fracture (Kelly McMullen)
3. 06:38 AM - Re: F-10108A Support Bracket Fracture (Jesse Saint)
4. 06:48 AM - Re: F-10108A Support Bracket Fracture (Tim Olson)
5. 06:49 AM - Re: Re: SB 14-08-29 and life of nose shock disks (Tim Olson)
6. 07:17 AM - Re: F-10108A Support Bracket Fracture (Phillip Perry)
7. 07:55 AM - Re: F-10108A Support Bracket Fracture (Don McDonald)
8. 08:36 AM - Re: F-10108A Support Bracket Fracture (Carl Froehlich)
9. 08:58 AM - Re: F-10108A Support Bracket Fracture (Lenny Iszak)
10. 11:33 AM - Re: F-10108A Support Bracket Fracture (Bill Watson)
11. 07:14 PM - Matronics Internet Connectivity Upgrades April 17-18 2017 (Matt Dralle)
Message 1
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| Subject: | Re: SB 14-08-29 and life of nose shock disks |
Not directly related to the Mooney/RV10 shock discs compression question, but related
to SB 14-08-29....... Has anyone considered replacing at least one of the
washers under the top hat collar assembly retainer with a more forgiving material
? The compression/suspension of loads from the front wheel are taken care
of by the compressing of the rubber shock discs (elastomers) but when that
compression is unloaded the whole movement back down is metal to metal hammering
between the isolator washers and the engine mount dyna cup. I haven't tried
it, but maybe a washer made from some sort of tyre rubber would stand the load
and soften the hammer blows. Any ideas/comments from the brains trust?
Cheers from Western Australia
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=468409#468409
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| Subject: | F-10108A Support Bracket Fracture |
As I thought I was closing up from my condition inspection, I discovered
that the rear cowl support, F-10108A (page 47-11&12) had fractured at the
bend where it attaches to the firewall. I'm thinking about using some
angle aluminum to replace that bend, at least for now. I'm guessing that
the bend when the part was made weakened the aluminum, and the
vibration/fiberglass flexing and stress from removal and reinstall of
cowling made the failure inevitable. Perhaps the fact that I used quick
release fasteners instead of piano hinges may focus more stress on the
part. Just wondering if anyone else has had a failure there
Kelly
-sent from the I-droid implanted in my forearm
Message 3
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| Subject: | Re: F-10108A Support Bracket Fracture |
This is very common and your proposed fix is exactly what I do.
Jesse Saint
Saint Aviation, Inc.
jesse@saintaviation.com
C: 352-427-0285
F: 815-377-3694
Sent from my iPhone
> On Apr 15, 2017, at 9:15 AM, Kelly McMullen <apilot2@gmail.com> wrote:
>
> As I thought I was closing up from my condition inspection, I discovered that
the rear cowl support, F-10108A (page 47-11&12) had fractured at the bend where
it attaches to the firewall. I'm thinking about using some angle aluminum
to replace that bend, at least for now. I'm guessing that the bend when the part
was made weakened the aluminum, and the vibration/fiberglass flexing and stress
from removal and reinstall of cowling made the failure inevitable. Perhaps
the fact that I used quick release fasteners instead of piano hinges may focus
more stress on the part. Just wondering if anyone else has had a failure
there
> Kelly
> -sent from the I-droid implanted in my forearm
Message 4
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| Subject: | Re: F-10108A Support Bracket Fracture |
I used screws and plates and mine has never fractured that part. Frankly I surprised
of that. Just a data point.
Tim
> On Apr 15, 2017, at 8:15 AM, Kelly McMullen <apilot2@gmail.com> wrote:
>
> As I thought I was closing up from my condition inspection, I discovered that
the rear cowl support, F-10108A (page 47-11&12) had fractured at the bend where
it attaches to the firewall. I'm thinking about using some angle aluminum
to replace that bend, at least for now. I'm guessing that the bend when the part
was made weakened the aluminum, and the vibration/fiberglass flexing and stress
from removal and reinstall of cowling made the failure inevitable. Perhaps
the fact that I used quick release fasteners instead of piano hinges may focus
more stress on the part. Just wondering if anyone else has had a failure
there
> Kelly
> -sent from the I-droid implanted in my forearm
Message 5
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| Subject: | Re: SB 14-08-29 and life of nose shock disks |
I don't know that the impact is all that hard. I agree in concept though. If
there was a huge gap maybe but as long as you have the gap mostly taken up when
compressed the drop isn't that far so the shock can't be that bad.
To me the part of the design that concerns me is that the metal strut tube that
goes thru the elastomers rubs on the metal plate in the engine mount, at least
on mine, and could eventually wear thru that strut tube. Maybe just enlarging
that hole would work....but that could also result in the stack of elastomers
being able to move more. I don't know.
Tim
> On Apr 15, 2017, at 5:47 AM, Greg McFarlane <grbcmcfarlane@gmail.com> wrote:
>
>
> Not directly related to the Mooney/RV10 shock discs compression question, but
related to SB 14-08-29....... Has anyone considered replacing at least one of
the washers under the top hat collar assembly retainer with a more forgiving
material ? The compression/suspension of loads from the front wheel are taken
care of by the compressing of the rubber shock discs (elastomers) but when that
compression is unloaded the whole movement back down is metal to metal hammering
between the isolator washers and the engine mount dyna cup. I haven't tried
it, but maybe a washer made from some sort of tyre rubber would stand the load
and soften the hammer blows. Any ideas/comments from the brains trust?
Cheers from Western Australia
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=468409#468409
>
>
>
>
>
>
>
>
>
Message 6
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| Subject: | Re: F-10108A Support Bracket Fracture |
I've noticed that mine will fold up under the cowling if I'm not careful when sliding
the lower cowl on. Then it takes some effort to get into out of a bind
and into the right position.
It's certainly a bracket prone to eventually failing on my plane at least. If
I'm careful it will be fine, but it's hard to be careful when you're wrestling
that lower cowling around 3 blades and a nose gear. Practice makes closer to
perfect anyway.
Phil
Sent from my iPhone
> On Apr 15, 2017, at 8:36 AM, Jesse Saint <jesse@saintaviation.com> wrote:
>
>
> This is very common and your proposed fix is exactly what I do.
>
> Jesse Saint
> Saint Aviation, Inc.
> jesse@saintaviation.com
> C: 352-427-0285
> F: 815-377-3694
>
> Sent from my iPhone
>
>> On Apr 15, 2017, at 9:15 AM, Kelly McMullen <apilot2@gmail.com> wrote:
>>
>> As I thought I was closing up from my condition inspection, I discovered that
the rear cowl support, F-10108A (page 47-11&12) had fractured at the bend where
it attaches to the firewall. I'm thinking about using some angle aluminum
to replace that bend, at least for now. I'm guessing that the bend when the
part was made weakened the aluminum, and the vibration/fiberglass flexing and
stress from removal and reinstall of cowling made the failure inevitable. Perhaps
the fact that I used quick release fasteners instead of piano hinges may focus
more stress on the part. Just wondering if anyone else has had a failure
there
>> Kelly
>> -sent from the I-droid implanted in my forearm
>
>
>
>
>
Message 7
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| Subject: | Re: F-10108A Support Bracket Fracture |
Never even installed it on my 10. =C2-Looked like the weak link to me.
=C2-So I made my own. =C2-A little wider at the small bend end, and sli
ghtly heavier gauge.Don McDonald
From: Phillip Perry <philperry9@gmail.com>
To: rv10-list@matronics.com
Sent: Saturday, April 15, 2017 9:29 AM
Subject: Re: RV10-List: F-10108A Support Bracket Fracture
I've noticed that mine will fold up under the cowling if I'm not careful wh
en sliding the lower cowl on.=C2- Then it takes some effort to get into o
ut of a bind and into the right position.=C2-
It's certainly a bracket prone to eventually failing on my plane at least.
=C2- If I'm careful it will be fine, but it's hard to be careful when you
're wrestling that lower cowling around 3 blades and a nose gear.=C2- Pra
ctice makes closer to perfect anyway.
Phil
Sent from my iPhone
> On Apr 15, 2017, at 8:36 AM, Jesse Saint <jesse@saintaviation.com> wrote:
>
>
> This is very common and your proposed fix is exactly what I do.
>
> Jesse Saint
> Saint Aviation, Inc.
> jesse@saintaviation.com
> C: 352-427-0285
> F: 815-377-3694
>
> Sent from my iPhone
>
>> On Apr 15, 2017, at 9:15 AM, Kelly McMullen <apilot2@gmail.com> wrote:
>>
>> As I thought I was closing up from my condition inspection, I discovered
that the rear cowl support, F-10108A (page 47-11&12) had fractured at the
bend where it attaches to the firewall.=C2- I'm thinking about using some
angle aluminum to replace that bend, at least for now.=C2- I'm guessing
that the bend when the part was made weakened the aluminum, and the vibrati
on/fiberglass flexing and stress from removal and reinstall of cowling made
the failure inevitable. Perhaps the fact that I used quick release fastene
rs instead of piano hinges may focus more stress on the part.=C2- Just wo
ndering if anyone else has had a failure there
>> Kelly
>> -sent from the I-droid implanted in my forearm
>
>
>
>
>
S -
WIKI -
-
=C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin.
Message 8
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| Subject: | Re: F-10108A Support Bracket Fracture |
+1.
And slightly modified for the James Cowl.
Carl
> On Apr 15, 2017, at 10:45 AM, Don McDonald <building_partner@yahoo.com> wr
ote:
>
> Never even installed it on my 10. Looked like the weak link to me. So I m
ade my own. A little wider at the small bend end, and slightly heavier gaug
e.
> Don McDonald
>
>
> From: Phillip Perry <philperry9@gmail.com>
> To: rv10-list@matronics.com
> Sent: Saturday, April 15, 2017 9:29 AM
> Subject: Re: RV10-List: F-10108A Support Bracket Fracture
>
>
> I've noticed that mine will fold up under the cowling if I'm not careful w
hen sliding the lower cowl on. Then it takes some effort to get into out of
a bind and into the right position.
>
> It's certainly a bracket prone to eventually failing on my plane at least.
If I'm careful it will be fine, but it's hard to be careful when you're wr
estling that lower cowling around 3 blades and a nose gear. Practice makes c
loser to perfect anyway.
>
> Phil
>
>
> Sent from my iPhone
>
> > On Apr 15, 2017, at 8:36 AM, Jesse Saint <jesse@saintaviation.com> wrote
:
> >
> >
> > This is very common and your proposed fix is exactly what I do.
> >
> > Jesse Saint
> > Saint Aviation, Inc.
> > jesse@saintaviation.com
> > C: 352-427-0285
> > F: 815-377-3694
> >
> > Sent from my iPhone
> >
> >> On Apr 15, 2017, at 9:15 AM, Kelly McMullen <apilot2@gmail.com> wrote:
> >>
> >> As I thought I was closing up from my condition inspection, I discovere
d that the rear cowl support, F-10108A (page 47-11&12) had fractured at the b
end where it attaches to the firewall. I'm thinking about using some angle a
luminum to replace that bend, at least for now. I'm guessing that the bend w
hen the part was made weakened the aluminum, and the vibration/fiberglass fl
exing and stress from removal and reinstall of cowling made the failure inev
itable. Perhaps the fact that I used quick release fasteners instead of pian
o hinges may focus more stress on the part. Just wondering if anyone else h
as had a failure there
> >> Kelly
> >> -sent from the I-droid implanted in my forearm
> >
> >
> >
> >
> >
>
> " target="_blank">http://www.matronics.com/Navigator?RV10-List
> http://forums.matronics.com
> <= Add some info to the Matronics Email List Wiki!
> -Matt Dralle, List Admin.
> http://www.matronics.com/contribution
>
>
>
>
>
Message 9
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| Subject: | Re: F-10108A Support Bracket Fracture |
I had to make a new one, because my James cowl has a slightly taller exit area.
Used a bit thicker aluminum and angles on both top and bottom. Much sturdier
and so far no signs of issues in 280 hours. Here's a picture.
I also have camlocks on the bottom of the cowl, the floating ones too.
Lenny
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=468426#468426
Attachments:
http://forums.matronics.com//files/img_2028_165.jpg
Message 10
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| Subject: | Re: F-10108A Support Bracket Fracture |
I copied Tim's solution during the build. No problems at 900hrs other
than a smoking rivet.
On 4/15/2017 9:43 AM, Tim Olson wrote:
>
> I used screws and plates and mine has never fractured that part. Frankly I surprised
of that. Just a data point.
> Tim
>
>> On Apr 15, 2017, at 8:15 AM, Kelly McMullen <apilot2@gmail.com> wrote:
>>
>> As I thought I was closing up from my condition inspection, I discovered that
the rear cowl support, F-10108A (page 47-11&12) had fractured at the bend where
it attaches to the firewall. I'm thinking about using some angle aluminum
to replace that bend, at least for now. I'm guessing that the bend when the
part was made weakened the aluminum, and the vibration/fiberglass flexing and
stress from removal and reinstall of cowling made the failure inevitable. Perhaps
the fact that I used quick release fasteners instead of piano hinges may focus
more stress on the part. Just wondering if anyone else has had a failure
there
>> Kelly
>> -sent from the I-droid implanted in my forearm
>
>
---
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| Subject: | Matronics Internet Connectivity Upgrades April 17-18 2017 |
Dear Matronics Email List an/or Forum User,
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18, 2017. During the upgrade connections to the Matronics and AeroElectric web
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I will send out a follow up message when the upgrade has been completed.
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Matronics Email List and Forum Admin.
Matt G Dralle | Matronics | 581 Jeannie Way | Livermore | CA | 94550
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