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craigtxtx(at)yahoo.com
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 Posted: Mon May 11, 2009 3:34 pm Post subject: Air Ramp Cracking |
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After a mere 60 hours TT I have noticed cracks around rivets on the F867 air ramp on my RV8A. The cracks are at the outboard rivets that attach the air ramp to the center F867D stiffener. I suspect there is a lot of vibration from the engine exhaust pipes that end just about in that area. I have the standard Vetterman exhaust bought through Vans and after about 20 hours or so I added a set of 20 degree turndown exhaust extensions from Vetterman. The extensions seemed to help overall noise and vibration in the cockpit, but obviously there is still a significant amount of vibration causing the ramp to crack. It looks like I'll have to replace the ramp, but that is not addressing the root cause of the problem.
Has anyone else seen and solved this problem? Additional stiffeners on the air ramp? Longer exhaust extensions? Any help would be appreciated
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rv8a2001(at)yahoo.com
Guest
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| Posted: Mon May 11, 2009 3:52 pm Post subject: Air Ramp Cracking |
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I just sheered a piece of stainless and popped it in place. Oh I also bonded it with Pro-seal to hopefulle stop any vibration. It runs the full length and width of the exhaust ramp Its a simple fix that actually looks good with no paint.
Scott
--- On Mon, 5/11/09, Craig Gallenbach <craigtxtx(at)yahoo.com> wrote:
| Quote: | From: Craig Gallenbach <craigtxtx(at)yahoo.com>
Subject: Air Ramp Cracking
To: rv8-list(at)matronics.com
Date: Monday, May 11, 2009, 4:33 PM
After a mere 60 hours TT I have
noticed cracks around rivets on the F867 air ramp on my
RV8A. The cracks are at the outboard rivets that
attach the air ramp to the center F867D stiffener. I
suspect there is a lot of vibration from the engine exhaust
pipes that end just about in that area. I have the
standard Vetterman exhaust bought through Vans and after
about 20 hours or so I added a set of 20 degree turndown
exhaust extensions from Vetterman. The
extensions seemed to help overall noise and vibration
in the cockpit, but obviously there is still a significant
amount of vibration causing the ramp to crack. It
looks like I'll have to replace the ramp, but that is
not addressing the root cause of the problem.
Has anyone else seen and solved this problem?
Additional stiffeners on the air ramp? Longer exhaust
extensions? Any help would be appreciated.
Thanks in advance.
Craig Gallenbach
Eastover, NC
RV8A N184CG 60 hrs.
|
| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV8-List |
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Larry Bowen
Joined: 09 Jan 2006
Posts: 802
Location: NC, USA
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| Posted: Mon May 11, 2009 4:11 pm Post subject: Air Ramp Cracking |
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I had the piccolo type extensions on mine. Good sound and no cracks in
365 hours. Otherwise ramps were stock.
On 5/11/09, scott bilinski <rv8a2001(at)yahoo.com> wrote:
| Quote: |
I just sheered a piece of stainless and popped it in place. Oh I also bonded
it with Pro-seal to hopefulle stop any vibration. It runs the full length
and width of the exhaust ramp Its a simple fix that actually looks good with
no paint.
Scott
--- On Mon, 5/11/09, Craig Gallenbach <craigtxtx(at)yahoo.com> wrote:
> From: Craig Gallenbach <craigtxtx(at)yahoo.com>
> Subject: Air Ramp Cracking
> To: rv8-list(at)matronics.com
> Date: Monday, May 11, 2009, 4:33 PM
> After a mere 60 hours TT I have
> noticed cracks around rivets on the F867 air ramp on my
> RV8A. The cracks are at the outboard rivets that
> attach the air ramp to the center F867D stiffener. I
> suspect there is a lot of vibration from the engine exhaust
> pipes that end just about in that area. I have the
> standard Vetterman exhaust bought through Vans and after
> about 20 hours or so I added a set of 20 degree turndown
> exhaust extensions from Vetterman. The
> extensions seemed to help overall noise and vibration
> in the cockpit, but obviously there is still a significant
> amount of vibration causing the ramp to crack. It
> looks like I'll have to replace the ramp, but that is
> not addressing the root cause of the problem.
>
> Has anyone else seen and solved this problem?
> Additional stiffeners on the air ramp? Longer exhaust
> extensions? Any help would be appreciated.
>
> Thanks in advance.
>
> Craig Gallenbach
> Eastover, NC
> RV8A N184CG 60 hrs.
>
>
|
--
--
Larry Bowen
Larry(at)BowenAero.com
http://BowenAero.com
| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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_________________
Larry Bowen
RV-8 SOLD,
RV-7QB in progress... |
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craigtxtx(at)yahoo.com
Guest
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| Posted: Mon May 11, 2009 4:31 pm Post subject: Air Ramp Cracking |
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Larry,
Where did you get the piccolo extensions?
Craig
Sent from my iPhone
On May 11, 2009, at 8:10 PM, Larry Bowen <larry(at)bowenaero.com> wrote:
I had the piccolo type extensions on mine. Good sound and no cracks in
365 hours. Otherwise ramps were stock.
On 5/11/09, scott bilinski <rv8a2001(at)yahoo.com> wrote:
I just sheered a piece of stainless and popped it in place. Oh I also bonded
it with Pro-seal to hopefulle stop any vibration. It runs the full length
and width of the exhaust ramp Its a simple fix that actually looks good with
no paint.
Scott
--- On Mon, 5/11/09, Craig Gallenbach <craigtxtx(at)yahoo.com> wrote:
From: Craig Gallenbach <craigtxtx(at)yahoo.com>
Subject: Air Ramp Cracking
To: rv8-list(at)matronics.com
Date: Monday, May 11, 2009, 4:33 PM
After a mere 60 hours TT I have
noticed cracks around rivets on the F867 air ramp on my
RV8A. The cracks are at the outboard rivets that
attach the air ramp to the center F867D stiffener. I
suspect there is a lot of vibration from the engine exhaust
pipes that end just about in that area. I have the
standard Vetterman exhaust bought through Vans and after
about 20 hours or so I added a set of 20 degree turndown
exhaust extensions from Vetterman. The
extensions seemed to help overall noise and vibration
in the cockpit, but obviously there is still a significant
amount of vibration causing the ramp to crack. It
looks like I'll have to replace the ramp, but that is
not addressing the root cause of the problem.
Has anyone else seen and solved this problem?
Additional stiffeners on the air ramp? Longer exhaust
extensions? Any help would be appreciated.
Thanks in advance.
Craig Gallenbach
Eastover, NC
RV8A N184CG 60 hrs.
--
--
Larry Bowen
Larry(at)BowenAero.com
http://BowenAero.com
| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV8-List |
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carl.froehlich(at)verizon
Guest
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| Posted: Mon May 11, 2009 4:33 pm Post subject: Air Ramp Cracking |
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Strongly agree on using pro-seal around the edges of the ramp. It reduces
vibration and seals oil and such from inside of the double floor.
Carl Froehlich
RV-8A (475 hrs)
RV-10 (fuselage)
--
| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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Larry Bowen
Joined: 09 Jan 2006
Posts: 802
Location: NC, USA
|
| Posted: Mon May 11, 2009 4:38 pm Post subject: Air Ramp Cracking |
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|
They were the straight ones from Wicks:
http://wicksaircraft.com/catalog/product_search_results.php/search=cGljY29sbw==
I also had the edges prosealed, per the plans I think.
--
Larry Bowen
Larry(at)BowenAero.com
http://BowenAero.com
Sent from Welcome, NC, United States
On Mon, May 11, 2009 at 8:28 PM, Craig Gallenbach <craigtxtx(at)yahoo.com (craigtxtx(at)yahoo.com)> wrote:
[quote] --> RV8-List message posted by: Craig Gallenbach <craigtxtx(at)yahoo.com (craigtxtx(at)yahoo.com)>
Larry,
Where did you get the piccolo extensions?
Craig
Sent from my iPhone
On May 11, 2009, at 8:10 PM, Larry Bowen <larry(at)bowenaero.com (larry(at)bowenaero.com)> wrote:
--> RV8-List message posted by: Larry Bowen <larry(at)bowenaero.com (larry(at)bowenaero.com)>
I had the piccolo type extensions on mine. Good sound and no cracks in
365 hours. Otherwise ramps were stock.
On 5/11/09, scott bilinski <rv8a2001(at)yahoo.com (rv8a2001(at)yahoo.com)> wrote:
--> RV8-List message posted by: scott bilinski <rv8a2001(at)yahoo.com (rv8a2001(at)yahoo.com)>
I just sheered a piece of stainless and popped it in place. Oh I also bonded
it with Pro-seal to hopefulle stop any vibration. It runs the full length
and width of the exhaust ramp Its a simple fix that actually looks good with
no paint.
Scott
--- On Mon, 5/11/09, Craig Gallenbach <craigtxtx(at)yahoo.com (craigtxtx(at)yahoo.com)> wrote:
From: Craig Gallenbach <craigtxtx(at)yahoo.com (craigtxtx(at)yahoo.com)>
Subject: Air Ramp Cracking
To: rv8-list(at)matronics.com (rv8-list(at)matronics.com)
Date: Monday, May 11, 2009, 4:33 PM
After a mere 60 hours TT I have
noticed cracks around rivets on the F867 air ramp on my
RV8A. The cracks are at the outboard rivets that
attach the air ramp to the center F867D stiffener. I
suspect there is a lot of vibration from the engine exhaust
pipes that end just about in that area. I have the
standard Vetterman exhaust bought through Vans and after
about 20 hours or so I added a set of 20 degree turndown
exhaust extensions from Vetterman. The
extensions seemed to help overall noise and vibration
in the cockpit, but obviously there is still a significant
amount of vibration causing the ramp to crack. It
looks like I'll have to replace the ramp, but that is
not addressing the root cause of the problem.
Has anyone else seen and solved this problem?
Additional stiffeners on the air ramp? Longer exhaust
extensions? Any help would be appreciated.
Thanks in advance.
Craig Gallenbach
Eastover, NC
RV8A N184CG 60 hrs.
--
--
Larry Bowen
Larry(at)BowenAero.com
http://BowenAero.com
===========
rget="_blank">http://www.matronics.com/Navigator?RV8-List
===========
http://forums.matronics.com
===========
le, List Admin.
="_blank">http://www.matronics.com/contribution
===========
[b]
| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV8-List |
|
_________________
Larry Bowen
RV-8 SOLD,
RV-7QB in progress... |
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Matt Dralle
Site Admin
Joined: 08 Nov 2005
Posts: 25203
Location: Livermore CA USA
|
| Posted: Mon May 11, 2009 5:11 pm Post subject: Air Ramp Cracking |
|
|
ACS says "3db" noise reduction, but I wonder what HP reduction? Those look pretty restrictive...?
Matt Dralle
At 05:37 PM 5/11/2009 Monday, you wrote:
| Quote: | They were the straight ones from Wicks:
<http://wicksaircraft.com/catalog/product_search_results.php/search=cGljY29sbw==>http://wicksaircraft.com/catalog/product_search_results.php/search=cGljY29sbw==
I also had the edges prosealed, per the plans I think.
--
Larry Bowen
Larry(at)BowenAero.com
<http://BowenAero.com>http://BowenAero.com
Sent from Welcome, NC, United States
On Mon, May 11, 2009 at 8:28 PM, Craig Gallenbach <<mailto:craigtxtx(at)yahoo.com>craigtxtx(at)yahoo.com> wrote:
Larry,
Where did you get the piccolo extensions?
Craig
Sent from my iPhone
On May 11, 2009, at 8:10 PM, Larry Bowen <<mailto:larry(at)bowenaero.com>larry(at)bowenaero.com> wrote:
I had the piccolo type extensions on mine. Good sound and no cracks in
365 hours. Otherwise ramps were stock.
On 5/11/09, scott bilinski <<mailto:rv8a2001(at)yahoo.com>rv8a2001(at)yahoo.com> wrote:
|
| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV8-List |
|
_________________
Matt Dralle
Matronics Email List Administrator |
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| Back to top |
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Matt Dralle
Site Admin
Joined: 08 Nov 2005
Posts: 25203
Location: Livermore CA USA
|
| Posted: Mon May 11, 2009 5:24 pm Post subject: Air Ramp Cracking |
|
|
Duh, I meant "Wicks".
At 06:06 PM 5/11/2009 Monday, you wrote:
| Quote: |
ACS says "3db" noise reduction, but I wonder what HP reduction? Those look pretty restrictive...?
Matt Dralle
At 05:37 PM 5/11/2009 Monday, you wrote:
>They were the straight ones from Wicks:
>
><http://wicksaircraft.com/catalog/product_search_results.php/search=cGljY29sbw==>http://wicksaircraft.com/catalog/product_search_results.php/search=cGljY29sbw==
>
>I also had the edges prosealed, per the plans I think.
>
>--
>Larry Bowen
>Larry(at)BowenAero.com
><http://BowenAero.com>http://BowenAero.com
>Sent from Welcome, NC, United States
>
>On Mon, May 11, 2009 at 8:28 PM, Craig Gallenbach <<mailto:craigtxtx(at)yahoo.com>craigtxtx(at)yahoo.com> wrote:
>
>Larry,
>
>Where did you get the piccolo extensions?
>
>Craig
>
>Sent from my iPhone
>
>On May 11, 2009, at 8:10 PM, Larry Bowen <<mailto:larry(at)bowenaero.com>larry(at)bowenaero.com> wrote:
>
>
>
>I had the piccolo type extensions on mine. Good sound and no cracks in
>365 hours. Otherwise ramps were stock.
>
>On 5/11/09, scott bilinski <<mailto:rv8a2001(at)yahoo.com>rv8a2001(at)yahoo.com> wrote:
>
>
|
Matt G Dralle | Matronics | PO Box 347 | Livermore | CA | 94551
925-606-1001 V | 925-606-6281 F | dralle(at)matronics.com Email
http://www.matronics.com/ WWW | Featuring Products For Aircraft
| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV8-List |
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_________________
Matt Dralle
Matronics Email List Administrator |
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Larry Bowen
Joined: 09 Jan 2006
Posts: 802
Location: NC, USA
|
| Posted: Mon May 11, 2009 5:41 pm Post subject: Air Ramp Cracking |
|
|
I gained 10 knots and fuel burn decreased 1.5 ghp. Just kidding. I put them on early, and never got around to testing. I had typical RV-8 speed numbers and had no problem keeping up with the others, so if there was a HP loss it was negligible, IMO.
--
Larry Bowen
Larry(at)BowenAero.com
http://BowenAero.com
On Mon, May 11, 2009 at 9:06 PM, Matt Dralle <dralle(at)matronics.com (dralle(at)matronics.com)> wrote:
[quote] --> RV8-List message posted by: Matt Dralle <dralle(at)matronics.com (dralle(at)matronics.com)>
ACS says "3db" noise reduction, but I wonder what HP reduction? Those look pretty restrictive...?
Matt Dralle
At 05:37 PM 5/11/2009 Monday, you wrote:
>They were the straight ones from Wicks:
>
>I also had the edges prosealed, per the plans I think.
>
>--
>Larry Bowen
>Larry(at)BowenAero.com
>
>
>
>Larry,
>
>Where did you get the piccolo extensions?
>
>Craig
>
>Sent from my iPhone
>
>--> RV8-List message posted by: Larry Bowen <<mailto:larry(at)bowenaero.com (larry(at)bowenaero.com)>larry(at)bowenaero.com (larry(at)bowenaero.com)>
>
>I had the piccolo type extensions on mine. Good sound and no cracks in
>365 hours. Otherwise ramps were stock.
>
===========
rget="_blank">http://www.matronics.com/Navigator?RV8-List
===========
http://forums.matronics.com
===========
le, List Admin.
="_blank">http://www.matronics.com/contribution
===========
[b]
| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV8-List |
|
_________________
Larry Bowen
RV-8 SOLD,
RV-7QB in progress... |
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| Back to top |
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craigtxtx(at)yahoo.com
Guest
|
| Posted: Tue May 12, 2009 1:51 am Post subject: Air Ramp Cracking |
|
|
Thanks Scott. How long has that fix been working?
Craig
Sent from my iPhone
On May 11, 2009, at 7:52 PM, scott bilinski <rv8a2001(at)yahoo.com> wrote:
I just sheered a piece of stainless and popped it in place. Oh I also bonded it with Pro-seal to hopefulle stop any vibration. It runs the full length and width of the exhaust ramp Its a simple fix that actually looks good with no paint.
Scott
--- On Mon, 5/11/09, Craig Gallenbach <craigtxtx(at)yahoo.com> wrote:
From: Craig Gallenbach <craigtxtx(at)yahoo.com>
Subject: Air Ramp Cracking
To: rv8-list(at)matronics.com
Date: Monday, May 11, 2009, 4:33 PM
After a mere 60 hours TT I have
noticed cracks around rivets on the F867 air ramp on my
RV8A. The cracks are at the outboard rivets that
attach the air ramp to the center F867D stiffener. I
suspect there is a lot of vibration from the engine exhaust
pipes that end just about in that area. I have the
standard Vetterman exhaust bought through Vans and after
about 20 hours or so I added a set of 20 degree turndown
exhaust extensions from Vetterman. The
extensions seemed to help overall noise and vibration
in the cockpit, but obviously there is still a significant
amount of vibration causing the ramp to crack. It
looks like I'll have to replace the ramp, but that is
not addressing the root cause of the problem.
Has anyone else seen and solved this problem?
Additional stiffeners on the air ramp? Longer exhaust
extensions? Any help would be appreciated.
Thanks in advance.
Craig Gallenbach
Eastover, NC
RV8A N184CG 60 hrs.
| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV8-List |
|
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| Back to top |
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rv8a2001(at)yahoo.com
Guest
|
| Posted: Tue May 12, 2009 5:14 am Post subject: Air Ramp Cracking |
|
|
| Quote: | From day one I heard about this problem and "fixed" it before first flight. So that would be almost 700hrs now.
|
Scott
RV-8a
--- On Tue, 5/12/09, Craig Gallenbach <craigtxtx(at)yahoo.com> wrote:
| Quote: | From: Craig Gallenbach <craigtxtx(at)yahoo.com>
Subject: Re: Air Ramp Cracking
To: "rv8-list(at)matronics.com" <rv8-list(at)matronics.com>
Date: Tuesday, May 12, 2009, 2:50 AM
Craig Gallenbach <craigtxtx(at)yahoo.com>
Thanks Scott. How long has that fix been working?
Craig
Sent from my iPhone
On May 11, 2009, at 7:52 PM, scott bilinski <rv8a2001(at)yahoo.com>
wrote:
I just sheered a piece of stainless and popped it in place.
Oh I also bonded it with Pro-seal to hopefulle stop any
vibration. It runs the full length and width of the exhaust
ramp Its a simple fix that actually looks good with no
paint.
Scott
--- On Mon, 5/11/09, Craig Gallenbach <craigtxtx(at)yahoo.com>
wrote:
From: Craig Gallenbach <craigtxtx(at)yahoo.com>
Subject: Air Ramp Cracking
To: rv8-list(at)matronics.com
Date: Monday, May 11, 2009, 4:33 PM
After a mere 60 hours TT I have
noticed cracks around rivets on the F867 air ramp on my
RV8A. The cracks are at the outboard rivets that
attach the air ramp to the center F867D stiffener. I
suspect there is a lot of vibration from the engine
exhaust
pipes that end just about in that area. I have the
standard Vetterman exhaust bought through Vans and after
about 20 hours or so I added a set of 20 degree turndown
exhaust extensions from Vetterman. The
extensions seemed to help overall noise and vibration
in the cockpit, but obviously there is still a significant
amount of vibration causing the ramp to crack. It
looks like I'll have to replace the ramp, but that is
not addressing the root cause of the problem.
Has anyone else seen and solved this problem?
Additional stiffeners on the air ramp? Longer
exhaust
extensions? Any help would be appreciated.
Thanks in advance.
Craig Gallenbach
Eastover, NC
RV8A N184CG 60 hrs.
Forum -
FAQ,
- MATRONICS WEB FORUMS -
List Contribution Web Site -
-Matt
Dralle, List Admin.
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| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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breece28117(at)yahoo.com
Guest
|
| Posted: Tue May 12, 2009 1:52 pm Post subject: Air Ramp Cracking |
|
|
This is the first time I've heard of this problem. Where can I find more info? I have just installed a 200hp Lycoming, Vetterman crossover exhaust system and CS prop on my nearly-finished RV-8.
Breece Nesbitt
Mooresville, NC
From: scott bilinski <rv8a2001(at)yahoo.com>
To: rv8-list(at)matronics.com
Sent: Tuesday, May 12, 2009 8:54:06 AM
Subject: Re: Air Ramp Cracking
--> RV8-List message posted by: scott bilinski <rv8a2001(at)yahoo.com (rv8a2001(at)yahoo.com)>
| Quote: | From day one I heard about this problem and "fixed" it before first flight. So that would be almost 700hrs now.
|
Scott
RV-8a
--- On Tue, 5/12/09, Craig Gallenbach <craigtxtx(at)yahoo.com (craigtxtx(at)yahoo.com)> wrote:
| Quote: | From: Craig Gallenbach <craigtxtx(at)yahoo.com (craigtxtx(at)yahoo.com)>
Subject: Re: Air Ramp Cracking
To: "rv8-list(at)matronics.com (rv8-list(at)matronics.com)" <rv8-list(at)matronics.com (rv8-list(at)matronics.com)>
Date: Tuesday, May 12, 2009, 2:50 AM
--> RV8-List message posted by:
Craig Gallenbach <craigtxtx(at)yahoo.com (craigtxtx(at)yahoo.com)>
>
Thanks Scott. How long has that fix been working?
Craig
Sent from my iPhone
On May 11, 2009, at 7:52 PM, scott bilinski <rv8a2001(at)yahoo.com (rv8a2001(at)yahoo.com)>
wrote:
--> RV8-List message posted by: scott bilinski <rv8a2001(at)yahoo.com (rv8a2001(at)yahoo.com)>
I just sheered a piece of stainless and popped it in place.
Oh I also bonded it with Pro-seal to hopefulle stop any
vibration. It runs the full length and width of the exhaust
ramp Its a simple fix that actually looks good with no
paint.
Scott
--- On Mon, 5/11/09, Craig Gallenbach <craigtxtx(at)yahoo.com (craigtxtx(at)yahoo.com)>
wrote:
From: Craig Gallenbach <craigtxtx(at)yahoo.com (craigtxtx(at)yahoo.com)>
Subject: Air Ramp Cracking
To: rv8-list(at)matronics.com (rv8-list(at)matronics.com)
Date: Monday, May 11, 2009, 4:33 PM
After a mere 60 hours TT I have
noticed cracks around rivets on the F867 air ramp on my
RV8A. The cracks are at the outboard rivets that
attach the air ramp to the center F867D stiffener. I
suspect there is a lot of vibration from the engine
exhaust
pipes that end just about in that area. I have the
standard Vetterman exhaust bought through Vans and after
about 20 hours or so I added a set of 20 degree turndown
exhaust extensions from Vetterman. The
extensions seemed to help overall noise and vibration
in the cockpit, but obviously there is still a significant
amount of vibration causing the ramp to crack. It
looks like I'll have to replace the ramp, but that is
not addressing the root cause of the problem.
Has anyone else seen and solved this problem?
Additional stiffeners on the air ramp? Longer
exhaust
extensions? Any help would be appreciated.
Thanks in advance.
Craig Gallenbach
Eastover, NC
RV8A N184CG 60 hrs.
Forum -
FAQ,
- MATRONICS WEB FORUMS -
List Contribution Web Site -
-Matt
Dralle, List Admin.
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[quote][b]
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rv8a2001(at)yahoo.com
Guest
|
| Posted: Tue May 12, 2009 3:45 pm Post subject: Air Ramp Cracking |
|
|
Probably not on this E-mail list but if you do a search on the larger lists I am sure it will come up.
Adding a doubler, in my case stainless, is so easy to do especially when building why not just do it. At least that's my thinking.
Scott
RV-8a
--- On Tue, 5/12/09, Breece Nesbitt <breece28117(at)yahoo.com> wrote:
| Quote: | From: Breece Nesbitt <breece28117(at)yahoo.com>
Subject: Re: Air Ramp Cracking
To: rv8-list(at)matronics.com
Date: Tuesday, May 12, 2009, 2:46 PM
This is the first time
I've heard of this problem. Where can I find more
info? I have just installed a 200hp
Lycoming, Vetterman crossover exhaust system and CS prop on
my nearly-finished RV-8.
Breece Nesbitt
Mooresville, NC
From: scott
bilinski <rv8a2001(at)yahoo.com>
To:
rv8-list(at)matronics.com
Sent:
Tuesday, May 12, 2009 8:54:06 AM
Subject: Re:
Air Ramp Cracking
>From day one I heard about this problem and
"fixed" it before first flight. So that would be
almost 700hrs now.
Scott
RV-8a
--- On Tue, 5/12/09, Craig Gallenbach <craigtxtx(at)yahoo.com>
wrote:
> From: Craig Gallenbach <craigtxtx(at)yahoo.com>
> Subject: Re: Air Ramp Cracking
> To: "rv8-list(at)matronics.com"
<rv8-list(at)matronics.com>
> Date: Tuesday, May 12, 2009, 2:50 AM
>
> Craig Gallenbach <craigtxtx(at)yahoo.com>
> >
> Thanks Scott. How long has that fix been working?
>
> Craig
>
> Sent from my iPhone
>
> On May 11, 2009, at 7:52 PM, scott bilinski <rv8a2001(at)yahoo.com>
> wrote:
>
>
<rv8a2001(at)yahoo.com>
>
>
> I just sheered a piece of stainless and popped it in
place.
> Oh I also bonded it with Pro-seal to hopefulle stop
any
> vibration. It runs the full length and width of the
exhaust
> ramp Its a simple fix that actually looks good with
no
> paint.
>
>
> Scott
>
>
> --- On Mon, 5/11/09, Craig Gallenbach <craigtxtx(at)yahoo.com>
> wrote:
>
> From: Craig Gallenbach <craigtxtx(at)yahoo.com>
> Subject: Air Ramp Cracking
> To: rv8-list(at)matronics.com
> Date: Monday, May 11, 2009, 4:33
PM
> After a mere 60 hours TT I have
> noticed cracks around rivets on the F867 air ramp on
my
> RV8A. The cracks are at the outboard rivets
that
> attach the air ramp to the center F867D
stiffener. I
> suspect there is a lot of vibration from the engine
> exhaust
> pipes that end just about in that area. I have
the
> standard Vetterman exhaust bought through Vans and
after
> about 20 hours or so I added a set of 20 degree
turndown
> exhaust extensions from Vetterman. The
> extensions seemed to help overall noise and vibration
> in the cockpit, but obviously there is still a
significant
> amount of vibration causing the ramp to crack.
It
> looks like I'll have to replace the ramp, but that
is
> not addressing the root cause of the problem.
>
> Has anyone else seen and solved this problem?
> Additional
stiffeners on the air ramp? Longer
> exhaust
> extensions? Any help would be appreciated.
>
> Thanks in advance.
>
> Craig Gallenbach
> Eastover, NC
> RV8A N184CG 60 hrs.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Forum -
> FAQ,
> - MATRONICS WEB FORUMS -
> List Contribution Web Site -
>
-Matt
> Dralle, List Admin.
>
>
|
| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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breece28117(at)yahoo.com
Guest
|
| Posted: Tue May 12, 2009 5:36 pm Post subject: Air Ramp Cracking |
|
|
Thanks, Scott. I'll do some research.
Breece
RV-8
From: scott bilinski <rv8a2001(at)yahoo.com>
To: rv8-list(at)matronics.com
Sent: Tuesday, May 12, 2009 7:43:13 PM
Subject: Re: Air Ramp Cracking
--> RV8-List message posted by: scott bilinski <rv8a2001(at)yahoo.com (rv8a2001(at)yahoo.com)>
Probably not on this E-mail list but if you do a search on the larger lists I am sure it will come up.
Adding a doubler, in my case stainless, is so easy to do especially when building why not just do it. At least that's my thinking.
Scott
RV-8a
--- On Tue, 5/12/09, Breece Nesbitt <breece28117(at)yahoo.com (breece28117(at)yahoo.com)> wrote:
| Quote: | From: Breece Nesbitt <breece28117(at)yahoo.com (breece28117(at)yahoo.com)>
Subject: Re: Air Ramp Cracking
To: rv8-list(at)matronics.com (rv8-list(at)matronics.com)
Date: Tuesday, May 12, 2009, 2:46 PM
This is the first time
I've heard of this problem. Where can I find more
info? I have just installed a 200hp
Lycoming, Vetterman crossover exhaust system and CS prop on
my nearly-finished RV-8.
Breece Nesbitt
Mooresville, NC
From: scott
bilinski <rv8a2001(at)yahoo.com (rv8a2001(at)yahoo.com)>
To:
rv8-list(at)matronics.com (rv8-list(at)matronics.com)
Sent:
Tuesday, May 12, 2009 8:54:06 AM
Subject: Re:
Air Ramp Cracking
--> RV8-List message posted by: scott bilinski <rv8a2001(at)yahoo.com (rv8a2001(at)yahoo.com)>
>From day one I heard about this problem and
"fixed" it before first flight. So that would be
almost 700hrs now.
Scott
RV-8a
--- On Tue, 5/12/09, Craig Gallenbach <craigtxtx(at)yahoo.com (craigtxtx(at)yahoo.com)>
wrote:
> From: Craig Gallenbach <craigtxtx(at)yahoo.com (craigtxtx(at)yahoo.com)>
> Subject: Re: Air Ramp Cracking
> To: "rv8-list(at)matronics.com (rv8-list(at)matronics.com)"
<rv8-list(at)matronics.com (rv8-list(at)matronics.com)>
> Date: Tuesday, May 12, 2009, 2:50 AM
> --> RV8-List message posted by:
> Craig Gallenbach <craigtxtx(at)yahoo.com (craigtxtx(at)yahoo.com)>
> >
> Thanks Scott. How long has that fix been working?
>
> Craig
>
> Sent from my iPhone
>
> On May 11, 2009, at 7:52 PM, scott bilinski <rv8a2001(at)yahoo.com (rv8a2001(at)yahoo.com)>
> wrote:
>
> --> RV8-List message posted by: scott bilinski
<rv8a2001(at)yahoo.com (rv8a2001(at)yahoo.com)>
>
>
> I just sheered a piece of stainless and popped it in
place.
> Oh I also bonded it with Pro-seal to hopefulle stop
any
> vibration. It runs the full length and width of the
exhaust
> ramp Its a simple fix that actually looks good with
no
> paint.
>
>
> Scott
>
>
> --- On Mon, 5/11/09, Craig Gallenbach <craigtxtx(at)yahoo.com (craigtxtx(at)yahoo.com)>
> wrote:
>
> From: Craig Gallenbach <craigtxtx(at)yahoo.com (craigtxtx(at)yahoo.com)>
> Subject: Air Ramp Cracking
> To: rv8-list(at)matronics.com (rv8-list(at)matronics.com)
> Date: Monday, May 11, 2009, 4:33
PM
> After a mere 60 hours TT I have
> noticed cracks around rivets on the F867 air ramp on
my
> RV8A. The cracks are at the outboard rivets
that
> attach the air ramp to the center F867D
stiffener. I
> suspect there is a lot of vibration from the engine
> exhaust
> pipes that end just about in that area. I have
the
> standard Vetterman exhaust bought through Vans and
after
> about 20 hours or so I added a set of 20 degree
turndown
> exhaust extensions from Vetterman. The
> extensions seemed to help overall noise and vibration
> in the cockpit, but obviously there is still a
significant
> amount of vibration causing the ramp to crack.
It
> looks like I'll have to replace the ramp, but that
is
> not addressing the root cause of the problem.
>
> Has anyone else seen and solved this problem?
> Additional
stiffeners on the air ramp? Longer
> exhaust
> extensions? Any help would be appreciated.
>
> Thanks in advance.
>
> Craig Gallenbach
> Eastover, NC
> RV8A N184CG 60 hrs.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Forum -
> FAQ,
> - MATRONICS WEB FORUMS -
> List Contribution Web Site -
>
-Matt
> Dralle, List Admin.
>
>
nbsp; =======================
|
[quote][b]
| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV8-List |
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| Back to top |
|
|
craigtxtx(at)yahoo.com
Guest
|
| Posted: Tue May 12, 2009 7:12 pm Post subject: Air Ramp Cracking |
|
|
Scott,
Did you modify your exhaust outlet in any way as well? Thanks,
Craig
Sent from my iPhone
On May 12, 2009, at 7:43 PM, scott bilinski <rv8a2001(at)yahoo.com> wrote:
Probably not on this E-mail list but if you do a search on the larger lists I am sure it will come up.
Adding a doubler, in my case stainless, is so easy to do especially when building why not just do it. At least that's my thinking.
Scott
RV-8a
--- On Tue, 5/12/09, Breece Nesbitt <breece28117(at)yahoo.com> wrote:
From: Breece Nesbitt <breece28117(at)yahoo.com>
Subject: Re: Air Ramp Cracking
To: rv8-list(at)matronics.com
Date: Tuesday, May 12, 2009, 2:46 PM
This is the first time
I've heard of this problem. Where can I find more
info? I have just installed a 200hp
Lycoming, Vetterman crossover exhaust system and CS prop on
my nearly-finished RV-8.
Breece Nesbitt
Mooresville, NC
From: scott
bilinski <rv8a2001(at)yahoo.com>
To:
rv8-list(at)matronics.com
Sent:
Tuesday, May 12, 2009 8:54:06 AM
Subject: Re:
Air Ramp Cracking
| Quote: | From day one I heard about this problem and
"fixed" it before first flight. So that would be
|
almost 700hrs now.
Scott
RV-8a
--- On Tue, 5/12/09, Craig Gallenbach <craigtxtx(at)yahoo.com>
wrote:
From: Craig Gallenbach <craigtxtx(at)yahoo.com>
Subject: Re: Air Ramp Cracking
To: "rv8-list(at)matronics.com"
<rv8-list(at)matronics.com>
Date: Tuesday, May 12, 2009, 2:50 AM
Craig Gallenbach <craigtxtx(at)yahoo.com>
Thanks Scott. How long has that fix been working?
Craig
Sent from my iPhone
On May 11, 2009, at 7:52 PM, scott bilinski <rv8a2001(at)yahoo.com>
wrote:
<rv8a2001(at)yahoo.com>
I just sheered a piece of stainless and popped it in
place.
Oh I also bonded it with Pro-seal to hopefulle stop
any
vibration. It runs the full length and width of the
exhaust
ramp Its a simple fix that actually looks good with
no
paint.
Scott
--- On Mon, 5/11/09, Craig Gallenbach <craigtxtx(at)yahoo.com>
wrote:
From: Craig Gallenbach <craigtxtx(at)yahoo.com>
Subject: Air Ramp Cracking
To: rv8-list(at)matronics.com
Date: Monday, May 11, 2009, 4:33
PM
After a mere 60 hours TT I have
noticed cracks around rivets on the F867 air ramp on
my
RV8A. The cracks are at the outboard rivets
that
attach the air ramp to the center F867D
stiffener. I
suspect there is a lot of vibration from the engine
exhaust
pipes that end just about in that area. I have
the
standard Vetterman exhaust bought through Vans and
after
about 20 hours or so I added a set of 20 degree
turndown
exhaust extensions from Vetterman. The
extensions seemed to help overall noise and vibration
in the cockpit, but obviously there is still a
significant
amount of vibration causing the ramp to crack.
It
looks like I'll have to replace the ramp, but that
is
not addressing the root cause of the problem.
Has anyone else seen and solved this problem?
Additional
stiffeners on the air ramp? Longer
exhaust
extensions? Any help would be appreciated.
Thanks in advance.
Craig Gallenbach
Eastover, NC
RV8A N184CG 60 hrs.
Forum -
FAQ,
- MATRONICS WEB FORUMS -
List Contribution Web Site -
-Matt
Dralle, List Admin.
| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV8-List |
|
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rv8a2001(at)yahoo.com
Guest
|
| Posted: Wed May 13, 2009 4:14 am Post subject: Air Ramp Cracking |
|
|
No exhaust modifications, just a piece of stainless over the existing aluminum with Pro-seal, its that simple.
Scott Bilinski
RV-8a
--- On Tue, 5/12/09, Craig Gallenbach <craigtxtx(at)yahoo.com> wrote:
| Quote: | From: Craig Gallenbach <craigtxtx(at)yahoo.com>
Subject: Re: Air Ramp Cracking
To: "rv8-list(at)matronics.com" <rv8-list(at)matronics.com>
Date: Tuesday, May 12, 2009, 8:09 PM
Craig Gallenbach <craigtxtx(at)yahoo.com>
Scott,
Did you modify your exhaust outlet in any way as
well? Thanks,
Craig
Sent from my iPhone
On May 12, 2009, at 7:43 PM, scott bilinski <rv8a2001(at)yahoo.com>
wrote:
Probably not on this E-mail list but if you do a search on
the larger lists I am sure it will come up.
Adding a doubler, in my case stainless, is so easy to do
especially when building why not just do it. At least that's
my thinking.
Scott
RV-8a
--- On Tue, 5/12/09, Breece Nesbitt <breece28117(at)yahoo.com>
wrote:
From: Breece Nesbitt <breece28117(at)yahoo.com>
Subject: Re: Air Ramp Cracking
To: rv8-list(at)matronics.com
Date: Tuesday, May 12, 2009, 2:46 PM
This is the first time
I've heard of this problem. Where can I find more
info? I have just installed a 200hp
Lycoming, Vetterman crossover exhaust system and CS prop
on
my nearly-finished RV-8.
Breece Nesbitt
Mooresville, NC
From: scott
bilinski <rv8a2001(at)yahoo.com>
To:
rv8-list(at)matronics.com
Sent:
Tuesday, May 12, 2009 8:54:06 AM
Subject: Re:
Air Ramp Cracking
>From day one I heard about this problem and
"fixed" it before first flight. So that would be
almost 700hrs now.
Scott
RV-8a
--- On Tue, 5/12/09, Craig Gallenbach <craigtxtx(at)yahoo.com>
wrote:
From: Craig Gallenbach <craigtxtx(at)yahoo.com>
Subject: Re: Air Ramp Cracking
To: "rv8-list(at)matronics.com"
<rv8-list(at)matronics.com>
Date: Tuesday, May 12, 2009, 2:50 AM
Craig Gallenbach <craigtxtx(at)yahoo.com>
Thanks Scott. How long has that fix been working?
Craig
Sent from my iPhone
On May 11, 2009, at 7:52 PM, scott bilinski <rv8a2001(at)yahoo.com>
wrote:
<rv8a2001(at)yahoo.com>
I just sheered a piece of stainless and popped it in
place.
Oh I also bonded it with Pro-seal to hopefulle stop
any
vibration. It runs the full length and width of the
exhaust
ramp Its a simple fix that actually looks good with
no
paint.
Scott
--- On Mon, 5/11/09, Craig Gallenbach <craigtxtx(at)yahoo.com>
wrote:
From: Craig Gallenbach <craigtxtx(at)yahoo.com>
Subject: Air Ramp Cracking
To: rv8-list(at)matronics.com
Date: Monday, May 11, 2009, 4:33
PM
After a mere 60 hours TT I have
noticed cracks around rivets on the F867 air ramp on
my
RV8A. The cracks are at the outboard rivets
that
attach the air ramp to the center F867D
stiffener. I
suspect there is a lot of vibration from the engine
exhaust
pipes that end just about in that area. I have
the
standard Vetterman exhaust bought through Vans and
after
about 20 hours or so I added a set of 20 degree
turndown
exhaust extensions from Vetterman. The
extensions seemed to help overall noise and vibration
in the cockpit, but obviously there is still a
significant
amount of vibration causing the ramp to crack.
It
looks like I'll have to replace the ramp, but that
is
not addressing the root cause of the problem.
Has anyone else seen and solved this problem?
Additional
stiffeners on the air ramp? Longer
exhaust
extensions? Any help would be appreciated.
Thanks in advance.
Craig Gallenbach
Eastover, NC
RV8A N184CG 60 hrs.
Forum -
FAQ,
- MATRONICS WEB FORUMS -
List Contribution Web Site -
-Matt
Dralle, List Admin.
Forum -
FAQ,
- MATRONICS WEB FORUMS -
List Contribution Web Site -
-Matt
Dralle, List Admin.
|
| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV8-List |
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