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cowl heat

 
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dlm34077(at)gmail.com
Guest
PostPosted: Wed May 03, 2017 5:58 pm    Post subject: cowl heat Reply with quote
just recently discovered (1200TT) that the lower cowl has three areas of delaminated
fiberglass. Preparing for the repair I found a thin honeycomb and reportedly 5 layers of glass.
 The areas of delamination seemed to be directly below the three in one connection to the heat muff and the exhaust tube of #6. Has anyone else experienced this problem? possibly the higher temperatures of the Southwestern USA are to blame. I have been opening the oil door after each landing to keep the under cowl temperatures under control. 

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jesse(at)saintaviation.co
Guest
PostPosted: Wed May 03, 2017 6:13 pm    Post subject: cowl heat Reply with quote
I have seen this on a number of planes that do not have heat shield in those areas. The inside of the cowl turns brown, then black, then starts to delaminate on the inside, then starts to delaminate on the outside. I have seen all stages of this. Remove the delaminates part, lay up new glass to cover that area with an overlap of the surrounding areas, then add heat shield after it cures.

Jesse Saint
Saint Aviation, Inc.
352-427-0285
jesse(at)saintaviation.com

Sent from my iPad

Quote:
On May 3, 2017, at 9:57 PM, dlm <dlm34077(at)gmail.com> wrote:

just recently discovered (1200TT) that the lower cowl has three areas of delaminated
fiberglass. Preparing for the repair I found a thin honeycomb and reportedly 5 layers of glass.
The areas of delamination seemed to be directly below the three in one connection to the heat muff and the exhaust tube of #6. Has anyone else experienced this problem? possibly the higher temperatures of the Southwestern USA are to blame. I have been opening the oil door after each landing to keep the under cowl temperatures under control.



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sportav8r(at)gmail.com
Guest
PostPosted: Thu May 04, 2017 5:35 am    Post subject: cowl heat Reply with quote
Jesse, should this be stick-on reflective foil or does it need some backing layer or a stand-off air gap to be effective?

-Bill
On Wed, May 3, 2017 at 10:13 PM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
Quote:
--> RV10-List message posted by: Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)>

I have seen this on a number of planes that do not have heat shield in those areas. The inside of the cowl turns brown, then black, then starts to delaminate on the inside, then starts to delaminate on the outside. I have seen all stages of this. Remove the delaminates part, lay up new glass to cover that area with an overlap of the surrounding areas, then add heat shield after it cures.

Jesse Saint
Saint Aviation, Inc.
[url=tel:352-427-0285]352-427-0285[/url]
jesse(at)saintaviation.com (jesse(at)saintaviation.com)

Sent from my iPad

> On May 3, 2017, at 9:57 PM, dlm <dlm34077(at)gmail.com (dlm34077(at)gmail.com)> wrote:
>
> just recently discovered (1200TT) that the lower cowl has three areas of delaminated
> fiberglass. Preparing for the repair I found a thin honeycomb and reportedly 5 layers of glass.
>  The areas of delamination seemed to be directly below the three in one connection to the heat muff and the exhaust tube of #6. Has anyone else experienced this problem? possibly the higher temperatures of the Southwestern USA are to blame. I have been opening the oil door after each landing to keep the under cowl temperatures under control.
>


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Mauledriver(at)nc.rr.com
Guest
PostPosted: Thu May 04, 2017 8:23 am    Post subject: cowl heat Reply with quote
I experienced the burn problem.  Once repaired, I used Thermo-Guard FR  
There is a reflective layer and some kind of insulating padding (air gap).  There have been no signs of further damage several hundred hours later.

In my unqualified opinion, I beleive that a reflective only shield would work fine.  But I have no experience to bear that out.

Bill
On 5/4/2017 9:34 AM, Bill Boyd wrote:

Quote:
Jesse, should this be stick-on reflective foil or does it need some backing layer or a stand-off air gap to be effective?

-Bill


On Wed, May 3, 2017 at 10:13 PM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
Quote:
--> RV10-List message posted by: Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)>

I have seen this on a number of planes that do not have heat shield in those areas. The inside of the cowl turns brown, then black, then starts to delaminate on the inside, then starts to delaminate on the outside. I have seen all stages of this. Remove the delaminates part, lay up new glass to cover that area with an overlap of the surrounding areas, then add heat shield after it cures.

Jesse Saint
Saint Aviation, Inc.
[url=tel:352-427-0285]352-427-0285[/url]
jesse(at)saintaviation.com (jesse(at)saintaviation.com)

Sent from my iPad

> On May 3, 2017, at 9:57 PM, dlm <dlm34077(at)gmail.com (dlm34077(at)gmail.com)> wrote:
>
> just recently discovered (1200TT) that the lower cowl has three areas of delaminated
> fiberglass. Preparing for the repair I found a thin honeycomb and reportedly 5 layers of glass.
>  The areas of delamination seemed to be directly below the three in one connection to the heat muff and the exhaust tube of #6. Has anyone else experienced this problem? possibly the higher temperatures of the Southwestern USA are to blame. I have been opening the oil door after each landing to keep the under cowl temperatures under control.
>


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jesse(at)saintaviation.co
Guest
PostPosted: Thu May 04, 2017 8:43 am    Post subject: cowl heat Reply with quote
The stick-on reflective foil is sufficient to prevent the delamination. Other types of material may protect the fiberglass better, but I can’t speak to that. Jesse SaintSaint Aviation, Inc.jesse(at)saintaviation.com (jesse(at)saintaviation.com)C: 352-427-0285F: 815-377-3694
Quote:
On May 4, 2017, at 9:34 AM, Bill Boyd <sportav8r(at)gmail.com (sportav8r(at)gmail.com)> wrote:
Jesse, should this be stick-on reflective foil or does it need some backing layer or a stand-off air gap to be effective?
-Bill

On Wed, May 3, 2017 at 10:13 PM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
Quote:
--> RV10-List message posted by: Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)>I have seen this on a number of planes that do not have heat shield in those areas. The inside of the cowl turns brown, then black, then starts to delaminate on the inside, then starts to delaminate on the outside. I have seen all stages of this. Remove the delaminates part, lay up new glass to cover that area with an overlap of the surrounding areas, then add heat shield after it cures.Jesse SaintSaint Aviation, Inc.jesse(at)saintaviation.com (jesse(at)saintaviation.com)Sent from my iPad> On May 3, 2017, at 9:57 PM, dlm <dlm34077(at)gmail.com (dlm34077(at)gmail.com)> wrote:>> just recently discovered (1200TT) that the lower cowl has three areas of delaminated> fiberglass. Preparing for the repair I found a thin honeycomb and reportedly 5 layers of glass.> The areas of delamination seemed to be directly below the three in one connection to the heat muff and the exhaust tube of #6. Has anyone else experienced this problem? possibly the higher temperatures of the Southwestern USA are to blame. I have been opening the oil door after each landing to keep the under cowl temperatures under control.>====================================-List" rel="noreferrer" target="_blank">http://www.matronics.com/Navigator?RV10-List====================================FORUMS -eferrer" target="_blank">http://forums.matronics.com====================================WIKI -errer" target="_blank">http://wiki.matronics.com====================================b Site - -Matt Dralle, List Admin.rel="noreferrer" target="_blank">http://www.matronics.com/contribution====================================



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Tim Olson



Joined: 25 Jan 2007
Posts: 2872
PostPosted: Thu May 04, 2017 9:13 am    Post subject: cowl heat Reply with quote
I've had no issues with just reflective stick-on foil.
If you can do that all over and add a patch with the
insulated backing near the very closest areas, you would
maybe even be better off, but I have no complaints
with what I have.
Tim

On 5/4/2017 11:23 AM, Bill Watson wrote:
Quote:
I experienced the burn problem. Once repaired, I used Thermo-Guard FR
<https://www.aircraftspruce.com/catalog/eppages/thermoguard.php?clickkey=25931>
There is a reflective layer and some kind of insulating padding (air
gap). There have been no signs of further damage several hundred hours
later.

In my unqualified opinion, I beleive that a reflective only shield would
work fine. But I have no experience to bear that out.

Bill
On 5/4/2017 9:34 AM, Bill Boyd wrote:
> Jesse, should this be stick-on reflective foil or does it need some
> backing layer or a stand-off air gap to be effective?
>
> -Bill
>


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rnewman(at)tcwtech.com
Guest
PostPosted: Thu May 04, 2017 9:19 am    Post subject: cowl heat Reply with quote
I have the adhesive backed aluminum foil on the lower cowl. 400 hrs and no trouble with delamination or any other heat related defects. It was easy and effective.

Bob NewmanTCW Technologies, LLC
610-928-3420
On May 4, 2017, at 12:40 PM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
Quote:
The stick-on reflective foil is sufficient to prevent the delamination. Other types of material may protect the fiberglass better, but I can’t speak to that. Jesse SaintSaint Aviation, Inc.jesse(at)saintaviation.com (jesse(at)saintaviation.com)C: 352-427-0285F: 815-377-3694
Quote:
On May 4, 2017, at 9:34 AM, Bill Boyd <sportav8r(at)gmail.com (sportav8r(at)gmail.com)> wrote:
Jesse, should this be stick-on reflective foil or does it need some backing layer or a stand-off air gap to be effective?
-Bill

On Wed, May 3, 2017 at 10:13 PM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
Quote:
--> RV10-List message posted by: Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)>I have seen this on a number of planes that do not have heat shield in those areas. The inside of the cowl turns brown, then black, then starts to delaminate on the inside, then starts to delaminate on the outside. I have seen all stages of this. Remove the delaminates part, lay up new glass to cover that area with an overlap of the surrounding areas, then add heat shield after it cures.Jesse SaintSaint Aviation, Inc.jesse(at)saintaviation.com (jesse(at)saintaviation.com)Sent from my iPad> On May 3, 2017, at 9:57 PM, dlm <dlm34077(at)gmail.com (dlm34077(at)gmail.com)> wrote:>> just recently discovered (1200TT) that the lower cowl has three areas of delaminated> fiberglass. Preparing for the repair I found a thin honeycomb and reportedly 5 layers of glass.> The areas of delamination seemed to be directly below the three in one connection to the heat muff and the exhaust tube of #6. Has anyone else experienced this problem? possibly the higher temperatures of the Southwestern USA are to blame. I have been opening the oil door after each landing to keep the under cowl temperatures under control.>====================================-List" rel="noreferrer" target="_blank">http://www.matronics.com/Navigator?RV10-List====================================FORUMS -eferrer" target="_blank">http://forums.matronics.com====================================WIKI -errer" target="_blank">http://wiki.matronics.com====================================b Site -   -Matt Dralle, List Admin.rel="noreferrer" target="_blank">http://www.matronics.com/contribution====================================




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wgreenley



Joined: 09 Jan 2010
Posts: 100
Location: Dowagiac, MI
PostPosted: Thu May 04, 2017 9:29 am    Post subject: cowl heat Reply with quote
How did you finish the interior of your cowl before applying foil?

On Thu, May 4, 2017 at 1:19 PM, Tcwtech <rnewman(at)tcwtech.com (rnewman(at)tcwtech.com)> wrote:
Quote:
I have the adhesive backed aluminum foil on the lower cowl.  400 hrs and no trouble with delamination  or any other heat related defects.   It was easy and effective. 

Bob NewmanTCW Technologies, LLC
[url=tel:(610)%20928-3420]610-928-3420[/url]
On May 4, 2017, at 12:40 PM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
Quote:
The stick-on reflective foil is sufficient to prevent the delamination. Other types of material may protect the fiberglass better, but I can’t speak to that.
Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com (jesse(at)saintaviation.com)
C: [url=tel:(352)%20427-0285]352-427-0285[/url]
F: [url=tel:(815)%20377-3694]815-377-3694[/url]

Quote:
On May 4, 2017, at 9:34 AM, Bill Boyd <sportav8r(at)gmail.com (sportav8r(at)gmail.com)> wrote:
Jesse, should this be stick-on reflective foil or does it need some backing layer or a stand-off air gap to be effective?

-Bill
On Wed, May 3, 2017 at 10:13 PM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
Quote:
--> RV10-List message posted by: Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)>

I have seen this on a number of planes that do not have heat shield in those areas. The inside of the cowl turns brown, then black, then starts to delaminate on the inside, then starts to delaminate on the outside. I have seen all stages of this. Remove the delaminates part, lay up new glass to cover that area with an overlap of the surrounding areas, then add heat shield after it cures.

Jesse Saint
Saint Aviation, Inc.
[url=tel:352-427-0285]352-427-0285[/url]
jesse(at)saintaviation.com (jesse(at)saintaviation.com)

Sent from my iPad

Quote:
On May 3, 2017, at 9:57 PM, dlm <dlm34077(at)gmail.com (dlm34077(at)gmail.com)> wrote:

just recently discovered (1200TT) that the lower cowl has three areas of delaminated
fiberglass. Preparing for the repair I found a thin honeycomb and reportedly 5 layers of glass.
  The areas of delamination seemed to be directly below the three in one connection to the heat muff and the exhaust tube of #6. Has anyone else experienced this problem? possibly the higher temperatures of the Southwestern USA are to blame. I have been opening the oil door after each landing to keep the under cowl temperatures under control.



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rene(at)felker.com
Guest
PostPosted: Thu May 04, 2017 9:32 am    Post subject: cowl heat Reply with quote
Same here.  >650 hrs.

Rene'
801-721-6080


From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Tcwtech
Sent: Thursday, May 04, 2017 11:19 AM
To: rv10-list(at)matronics.com
Subject: Re: cowl heat

I have the adhesive backed aluminum foil on the lower cowl. 400 hrs and no trouble with delamination or any other heat related defects. It was easy and effective.

Bob Newman
TCW Technologies, LLC

610-928-3420

On May 4, 2017, at 12:40 PM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
Quote:

The stick-on reflective foil is sufficient to prevent the delamination. Other types of material may protect the fiberglass better, but I can’t speak to that.

Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com (jesse(at)saintaviation.com)
C: 352-427-0285
F: 815-377-3694

Quote:

On May 4, 2017, at 9:34 AM, Bill Boyd <sportav8r(at)gmail.com (sportav8r(at)gmail.com)> wrote:


Jesse, should this be stick-on reflective foil or does it need some backing layer or a stand-off air gap to be effective?


-Bill

On Wed, May 3, 2017 at 10:13 PM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
Quote:

--> RV10-List message posted by: Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)>

I have seen this on a number of planes that do not have heat shield in those areas. The inside of the cowl turns brown, then black, then starts to delaminate on the inside, then starts to delaminate on the outside. I have seen all stages of this. Remove the delaminates part, lay up new glass to cover that area with an overlap of the surrounding areas, then add heat shield after it cures.

Jesse Saint
Saint Aviation, Inc.
[url=tel:352-427-0285]352-427-0285[/url]
jesse(at)saintaviation.com (jesse(at)saintaviation.com)

Sent from my iPad

Quote:
On May 3, 2017, at 9:57 PM, dlm <dlm34077(at)gmail.com (dlm34077(at)gmail.com)> wrote:

just recently discovered (1200TT) that the lower cowl has three areas of delaminated
fiberglass. Preparing for the repair I found a thin honeycomb and reportedly 5 layers of glass.
The areas of delamination seemed to be directly below the three in one connection to the heat muff and the exhaust tube of #6. Has anyone else experienced this problem? possibly the higher temperatures of the Southwestern USA are to blame. I have been opening the oil door after each landing to keep the under cowl temperatures under control.



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rene(at)felker.com
Guest
PostPosted: Thu May 04, 2017 9:42 am    Post subject: cowl heat Reply with quote
Several coats of thinned epoxy.  Degreaser at the end.

Rene'
801-721-6080

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of William Greenley
Sent: Thursday, May 04, 2017 11:29 AM
To: rv10-list(at)matronics.com
Subject: Re: cowl heat

How did you finish the interior of your cowl before applying foil?


On Thu, May 4, 2017 at 1:19 PM, Tcwtech <rnewman(at)tcwtech.com (rnewman(at)tcwtech.com)> wrote:
Quote:

I have the adhesive backed aluminum foil on the lower cowl. 400 hrs and no trouble with delamination or any other heat related defects. It was easy and effective.

Bob Newman
TCW Technologies, LLC

[url=tel:(610)%20928-3420]610-928-3420[/url]

On May 4, 2017, at 12:40 PM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
Quote:

The stick-on reflective foil is sufficient to prevent the delamination. Other types of material may protect the fiberglass better, but I can’t speak to that.

Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com (jesse(at)saintaviation.com)
C: [url=tel:(352)%20427-0285]352-427-0285[/url]
F: [url=tel:(815)%20377-3694]815-377-3694[/url]

Quote:

On May 4, 2017, at 9:34 AM, Bill Boyd <sportav8r(at)gmail.com (sportav8r(at)gmail.com)> wrote:


Jesse, should this be stick-on reflective foil or does it need some backing layer or a stand-off air gap to be effective?


-Bill

On Wed, May 3, 2017 at 10:13 PM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
Quote:

--> RV10-List message posted by: Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)>

I have seen this on a number of planes that do not have heat shield in those areas. The inside of the cowl turns brown, then black, then starts to delaminate on the inside, then starts to delaminate on the outside. I have seen all stages of this. Remove the delaminates part, lay up new glass to cover that area with an overlap of the surrounding areas, then add heat shield after it cures.

Jesse Saint
Saint Aviation, Inc.
[url=tel:352-427-0285]352-427-0285[/url]
jesse(at)saintaviation.com (jesse(at)saintaviation.com)

Sent from my iPad

Quote:
On May 3, 2017, at 9:57 PM, dlm <dlm34077(at)gmail.com (dlm34077(at)gmail.com)> wrote:

just recently discovered (1200TT) that the lower cowl has three areas of delaminated
fiberglass. Preparing for the repair I found a thin honeycomb and reportedly 5 layers of glass.
The areas of delamination seemed to be directly below the three in one connection to the heat muff and the exhaust tube of #6. Has anyone else experienced this problem? possibly the higher temperatures of the Southwestern USA are to blame. I have been opening the oil door after each landing to keep the under cowl temperatures under control.



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eferrer" target="_blank">http://forums.matronics.com
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errer" target="_blank">http://wiki.matronics.com
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rel="noreferrer" target="_blank">http://www.matronics.com/contribution
====================================










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rnewman(at)tcwtech.com
Guest
PostPosted: Thu May 04, 2017 10:15 am    Post subject: cowl heat Reply with quote
A coat of thinned epoxy and then I actually just had my painter shoot a coat of white inside the whole cowl. That way any area that didn’t get foil would still look nice and clean up easily. Works as anticipated.

-Bob





From: William Greenley (wgreenley(at)gmail.com)
Sent: Thursday, May 04, 2017 1:28 PM
To: rv10-list(at)matronics.com (rv10-list(at)matronics.com)
Subject: Re: cowl heat


How did you finish the interior of your cowl before applying foil?

On Thu, May 4, 2017 at 1:19 PM, Tcwtech <rnewman(at)tcwtech.com (rnewman(at)tcwtech.com)> wrote:
Quote:
I have the adhesive backed aluminum foil on the lower cowl. 400 hrs and no trouble with delamination or any other heat related defects. It was easy and effective.

Bob Newman TCW Technologies, LLC
[url=tel:(610)%20928-3420]610-928-3420[/url]


On May 4, 2017, at 12:40 PM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
Quote:
The stick-on reflective foil is sufficient to prevent the delamination. Other types of material may protect the fiberglass better, but I can’t speak to that.
Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com (jesse(at)saintaviation.com)
C: [url=tel:(352)%20427-0285]352-427-0285[/url]
F: [url=tel:(815)%20377-3694]815-377-3694[/url]

Quote:
On May 4, 2017, at 9:34 AM, Bill Boyd <sportav8r(at)gmail.com (sportav8r(at)gmail.com)> wrote:
Jesse, should this be stick-on reflective foil or does it need some backing layer or a stand-off air gap to be effective?
-Bill


On Wed, May 3, 2017 at 10:13 PM, Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)> wrote:
Quote:
--> RV10-List message posted by: Jesse Saint <jesse(at)saintaviation.com (jesse(at)saintaviation.com)>

I have seen this on a number of planes that do not have heat shield in those areas. The inside of the cowl turns brown, then black, then starts to delaminate on the inside, then starts to delaminate on the outside. I have seen all stages of this. Remove the delaminates part, lay up new glass to cover that area with an overlap of the surrounding areas, then add heat shield after it cures.

Jesse Saint
Saint Aviation, Inc.
[url=tel:352-427-0285]352-427-0285[/url]
jesse(at)saintaviation.com (jesse(at)saintaviation.com)

Sent from my iPad

Quote:
On May 3, 2017, at 9:57 PM, dlm <dlm34077(at)gmail.com (dlm34077(at)gmail.com)> wrote:

just recently discovered (1200TT) that the lower cowl has three areas of delaminated
fiberglass. Preparing for the repair I found a thin honeycomb and reportedly 5 layers of glass.
The areas of delamination seemed to be directly below the three in one connection to the heat muff and the exhaust tube of #6. Has anyone else experienced this problem? possibly the higher temperatures of the Southwestern USA are to blame. I have been opening the oil door after each landing to keep the under cowl temperatures under control.



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