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Cowl Louvers

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n184da(at)volcano.net
Guest

Posted: Thu Jun 22, 2006 3:51 pm Post subject: Cowl Louvers

Greetings Listers,,



Anyone know of a good source for stamped, aluminum cowl louvers?

I am looking to increase the airflow though the cowl and was thinking  

of two louvers, placed on the bottom of the cowl, on either side of  

the inlet air scoop.



Thanks,,





Derrick L. Aubuchon

RV-4: N184DA

Jackson/Westover -Amador County (O70)

n184da(at)volcano.net

walter(at)tondu.com
Guest

Posted: Thu Jun 22, 2006 4:23 pm Post subject: Cowl Louvers

On 06/22  4:45, Derrick Aubuchon wrote:

 > Anyone know of a good source for stamped, aluminum cowl louvers?

 > I am looking to increase the airflow though the cowl and was thinking  

 > of two louvers, placed on the bottom of the cowl, on either side of  

 > the inlet air scoop.

Vans sells some for the RV-10.  Search for louver on their storefront.

I have a pair, not the most elaborate but I guess the do the job.  I 

don't plan on installing them after making the cowl inlet ramp glass

job which cooled temps 20-30 degrees.

-- 

Walter Tondu

http://www.rv7-a.com

Flying!

alexpeterson(at)earthlink
Guest

Posted: Thu Jun 22, 2006 4:27 pm Post subject: Cowl Louvers

Van's has them.  See LOUVER F-10109, I believe.



Alex Peterson

RV6-A N66AP 761 hours

Maple Grove, MN

 

 

 	  Quote: 	
		   

 

 Greetings Listers,,

 

 Anyone know of a good source for stamped, aluminum cowl louvers?

 I am looking to increase the airflow though the cowl and was 

 thinking of two louvers, placed on the bottom of the cowl, on 

 either side of the inlet air scoop.

 

 Thanks,,

 

 

 

 

 Derrick L. Aubuchon

 RV-4: N184DA

 Jackson/Westover -Amador County (O70)

 n184da(at)volcano.net

bjust(at)cox.net
Guest

Posted: Thu Jun 22, 2006 7:17 pm Post subject: Cowl Louvers

Derrick,



The aluminum side louver set ( black powder coated) I used on my -9A came 

from Race Ace.



http://www.raceace.com/productsside.html?x=33&y=7



I will directly email you a picture showing them mounted on the bottom of 

the cowling. .



Bayne Just

RV 9A N910BJ

SEE Gillespie Field

San Diego CA



---

n184da(at)volcano.net
Guest

Posted: Thu Jun 22, 2006 8:07 pm Post subject: Cowl Louvers

Excellent,,



Just what I was looking for.



Thanks Bayne, much appreciated!

Derrick Aubuchon

n184da(at)volcano.net

http://www.deltalpha.org

On Jun 23, 2006, at 3:15 AM, Bayne wrote:



[quote] 



 Derrick,



 The aluminum side louver set ( black powder coated) I used on my  

 -9A came from Race Ace.



 http://www.raceace.com/productsside.html?x=33&y=7



 I will directly email you a picture showing them mounted on the  

 bottom of the cowling. .



 Bayne Just

 RV 9A N910BJ

 SEE Gillespie Field

 San Diego CA



 ---

ronlee(at)pcisys.net
Guest

Posted: Thu Jun 22, 2006 8:21 pm Post subject: Cowl Louvers

Here are the louvers on my plane:



http://tinyurl.com/kykdr



Ron

n184da(at)volcano.net
Guest

Posted: Thu Jun 22, 2006 8:24 pm Post subject: Cowl Louvers

Thanks,,

I'll check these out.

Derrick L. Aubuchon

RV-4: N184DA

Jackson/Westover -Amador County (O70)

n184da(at)volcano.net



On Jun 22, 2006, at 5:23 PM, Alex Peterson wrote:



 	  Quote: 	
		   

 <alexpeterson(at)earthlink.net>



 Van's has them.  See LOUVER F-10109, I believe.



 Alex Peterson

 RV6-A N66AP 761 hours

 Maple Grove, MN

> 

>

> Greetings Listers,,

>

> Anyone know of a good source for stamped, aluminum cowl louvers?

> I am looking to increase the airflow though the cowl and was

> thinking of two louvers, placed on the bottom of the cowl, on

> either side of the inlet air scoop.

>

> Thanks,,

>

>

> Derrick L. Aubuchon

> RV-4: N184DA

> Jackson/Westover -Amador County (O70)

> n184da(at)volcano.net

Larry Bowen

Joined: 09 Jan 2006
Posts: 802
Location: NC, USA

Posted: Fri Jun 23, 2006 3:36 am Post subject: Cowl Louvers

Ron -



What sort of temp differences did you see after the louver installation? 

Your exit area at the exhaust already looks pretty big.....



-- 

Larry Bowen, RV-8.  105`F in the hanger yesterday...

Larry(at)BowenAero.com

http://BowenAero.com



Ron Lee wrote:

 	  Quote: 	
		   



 Here are the louvers on my plane:



 http://tinyurl.com/kykdr



 Ron

_________________
Larry Bowen
RV-8 SOLD,
RV-7QB in progress...

ronlee(at)pcisys.net
Guest

Posted: Fri Jun 23, 2006 2:21 pm Post subject: Cowl Louvers

 	  Quote: 	
		  What sort of temp differences did you see after the louver installation?

Your exit area at the exhaust already looks pretty big.....


	




Larry, I did this last year so my recollection of actual temp drops

is to be considered suspect until I can find the actual data or post

that I made at that time.



I did three things.  First I removed the three or four cabin heat hoses

that ran across the back area.  That helped reduce oil temps 10-15

deg F.



Second I opened up the bottom cowl exit area that you saw in the pic.

Similar oil temp decrease.



Finally I added the louvers for another similar drop in oil temp.



Ron Lee

Larry Bowen

Joined: 09 Jan 2006
Posts: 802
Location: NC, USA

Posted: Fri Jun 23, 2006 2:28 pm Post subject: Cowl Louvers

OK, I thought you were fighting high CHT's.  Glad it worked for you.

-- 

Larry Bowen

Larry(at)BowenAero.com

http://BowenAero.com

Ron Lee wrote:

 	  Quote: 	

>What sort of temp differences did you see after the louver installation?

>Your exit area at the exhaust already looks pretty big.....

 Larry, I did this last year so my recollection of actual temp drops

 is to be considered suspect until I can find the actual data or post

 that I made at that time.

 I did three things.  First I removed the three or four cabin heat hoses

 that ran across the back area.  That helped reduce oil temps 10-15

 deg F.

 Second I opened up the bottom cowl exit area that you saw in the pic.

 Similar oil temp decrease.

 Finally I added the louvers for another similar drop in oil temp.

 Ron Lee

_________________
Larry Bowen
RV-8 SOLD,
RV-7QB in progress...

Rick Galati

Joined: 10 Jan 2006
Posts: 91
Location: Lake St. Louis MO.

Posted: Thu Jul 06, 2006 7:30 am Post subject: Re: Cowl Louvers

Would anyone care to post a picture and the overall dimensions of the F10109 louver Van's carries? I purchased a pair of the side louvers from Race Ace

http://www.raceace.com/productsside.html?x=33&y=7 

and upon inspection, am having second thoughts about installing 'em before I become a little more familiar with Van's version.  



Thanks,



Rick Galati  RV-6A  "Darla"  149 hours

 	  alexpeterson(at)earthlink wrote: 	
		  Van's has them.  See LOUVER F-10109, I believe.



Alex Peterson

RV6-A N66AP 761 hours

Maple Grove, MN

 

 

 	  Quote: 	
		   

 

 Greetings Listers,,

 

 Anyone know of a good source for stamped, aluminum cowl louvers?

 I am looking to increase the airflow though the cowl and was 

 thinking of two louvers, placed on the bottom of the cowl, on 

 either side of the inlet air scoop.

 

 Thanks,,

 

 

 

 

 Derrick L. Aubuchon

 RV-4: N184DA

 Jackson/Westover -Amador County (O70)

 n184da(at)volcano.net

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