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AA-5B Cowling

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mark.t.mueller(at)comcast
Guest

Posted: Thu May 13, 2010 5:30 am Post subject: AA-5B Cowling

I still have my old AA-5B cowling with the "split nosebowl".  Paint

isn't great but in good condition overall, just missing a couple

screws on the split hardware.



I have been saving it to build a nice little wall decoration for my

office and/or garage, but the Household Commander vetoed that idea....



It was removed a few years back for my LoPresti nose install (long

before Gary was working on his...)



LMK if anyone is interested.  I can snap digi photos if needed.  Best

offer + shipping.



Mark

Tiger N1533R



From: teamgrumman(at)AOL.COM



Scott has bought the cowling.

Thanks for your interest.

Gary

JHOSLER(at)epri.com
Guest

Posted: Thu May 13, 2010 5:36 am Post subject: AA-5B Cowling

Mark:



Are you talking full cowling or just the nose bowl?



Cowlings are in high demand.  You have one in good condition (top and bottom)?



John

704-252-0780



--

andy747(at)charter.net
Guest

Posted: Thu May 13, 2010 5:48 am Post subject: AA-5B Cowling

Mark,



put me on the list as interested and I would like a picture when available. 

Where are you located (thinking of shipping cost).  Thanks...



Andy Thomas



---

GrummanDude

Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA

Posted: Thu May 13, 2010 1:54 pm Post subject: AA-5B Cowling

I've offered cowlings for sale before and no one responded. I just  

sold 3 to Fletcher for real cheap so, if there is a demand, call  

Fletcher. They have some at bargain basement prices.



Sent from my iPhone



On May 13, 2010, at 6:46 AM, "Andy Thomas" <andy747(at)charter.net> wrote:



[quote] 

 >



 Mark,



 put me on the list as interested and I would like a picture when  

 available. Where are you located (thinking of shipping cost).   

 Thanks...



 Andy Thomas



 ---

_________________
Gary
AuCountry Aviation
Home of Team Grumman

JHOSLER(at)epri.com
Guest

Posted: Thu May 13, 2010 4:20 pm Post subject: AA-5B Cowling

Full cowlings are in extremely high demand for AA-5b and on.  Fatigue

has done bad things over the last 30 years.



The fact that you are developing a replacement cowling is seen as a god

send even if there is no performance improvement.



John

704-252-0780



--

Discover

Joined: 26 Feb 2007
Posts: 429

Posted: Thu May 13, 2010 6:22 pm Post subject: AA-5B Cowling

Hey John,

  

 Gary is not developing a replacement cowling.  He has already produced an FAA approved STC for a complete cowling. How do I  know? I have one on my Tiger. AND it is much improved over the stock cowl even a  new stock cowl. Much less drag design and easier to remove for  maintenance.

  

 Spread the news John.

  

 Regards,

 Ned

  

  

 [quote]   ---

JHOSLER(at)epri.com
Guest

Posted: Fri May 14, 2010 2:49 am Post subject: AA-5B Cowling

Ned:  

   

I have been following Gary’s progress closely over the past few years.  Hope to get a Jaguar for my tiger someday.  

   

How’s the cooling?  A lot has been said about the AG5B carbon fiber cowling not dissipating heat well.  

   

John  

         

  

From: owner-teamgrumman-list-server(at)matronics.com [mailto:owner-teamgrumman-list-server(at)matronics.com] On Behalf Of 923te

 Sent: Thursday, May 13, 2010 10:18 PM

 To: teamgrumman-list(at)matronics.com

 Subject: Re: TeamGrumman-List: AA-5B Cowling  

  

     

Hey John,  

    

   

    

Gary is not developing a replacement cowling. He has already produced an FAA approved STC for a complete cowling. How do I know? I have one on my Tiger. AND it is much improved over the stock cowl even a new stock cowl. Much less drag design and easier to remove for maintenance.  

    

   

    

Spread the news John.  

    

   

    

Regards,  

    

Ned  

    

   

    

   

  [quote]    

---

flyv35b(at)minetfiber.com
Guest

Posted: Fri May 14, 2010 5:44 am Post subject: AA-5B Cowling

 

How’s the  cooling?  A lot has been said about the AG5B carbon fiber cowling not  dissipating heat well. 

  

John 

  

That's the first I have  heard about that.  Do you really think that the heat transfer through an  aluminum cowling versus a carbon fiber or fiberglass one makes a difference,  even a minor one, on the overall cooling?  There are other more  significant differences between the AA-5B and AG-5B that could contribute  to any cooling differences. 

  

Cliff

 [quote] [b]

Discover

Joined: 26 Feb 2007
Posts: 429

Posted: Fri May 14, 2010 5:45 am Post subject: AA-5B Cowling

John

Having owned Tigers with aluminum, carbon fiber and fiberglass cowlings I can say that the "much has been said" is simply that. There is no appreciable difference in heat dissipation between the three cowls. The major player is how the heat is moved quickly out the air exits and NOT how well the heat moves across the material of the cowl. That's just plain physics

Comparing the Jag cowl to the AG5B cowl in my particular instance is still on going with more flight tests forth coming to accurately make the comparisons. I would not be surprised to find the Jag cowl to have a little higher temps than the AG cowl but still adequate cooling.

Your Fellow Grumman Enthusiast

Ned



Sent from my iPhone



On May 14, 2010, at 5:46 AM, "Hosler, John" <JHOSLER(at)epri.com (JHOSLER(at)epri.com)> wrote:



[quote]     st1\:*{behavior:url(#default#ieooui) }  <![endif]-->       <![endif]-->       <![endif]-->       

Ned:  

   

I have been following Garyâ€™s progress closely over the past few years.  Hope to get a Jaguar for my tiger someday.  

   

Howâ€™s the cooling?  A lot has been said about the AG5B carbon fiber cowling not dissipating heat well.  

   

John  

         

  

From: owner-teamgrumman-list-server(at)matronics.com (owner-teamgrumman-list-server(at)matronics.com) [mailto:owner-teamgrumman-list-server(at)matronics.com] On Behalf Of 923te

 Sent: Thursday, May 13, 2010 10:18 PM

 To: teamgrumman-list(at)matronics.com (teamgrumman-list(at)matronics.com)

 Subject: Re: TeamGrumman-List: AA-5B Cowling  

  

     

Hey John,  

    

   

    

Gary is not developing a replacement cowling. He has already produced an FAA approved STC for a complete cowling. How do I know? I have one on my Tiger. AND it is much improved over the stock cowl even a new stock cowl. Much less drag design and easier to remove for maintenance.  

    

   

    

Spread the news John.  

    

   

    

Regards,  

    

Ned  

    

   

    

   

  [quote]    

---

JHOSLER(at)epri.com
Guest

Posted: Fri May 14, 2010 5:49 am Post subject: AA-5B Cowling

The question was more related to cool down after landing or heat up while taxiing.  That’s what cowl flaps are for on larger aircraft.  

         

  

From: owner-teamgrumman-list-server(at)matronics.com [mailto:owner-teamgrumman-list-server(at)matronics.com] On Behalf Of flyv35b

 Sent: Friday, May 14, 2010 9:31 AM

 To: teamgrumman-list(at)matronics.com

 Subject: Re: TeamGrumman-List: AA-5B Cowling  

  

     

How’s the cooling?  A lot has been said about the AG5B carbon fiber cowling not dissipating heat well.  

   

John  

   

That's the first I have heard about that.  Do you really think that the heat transfer through an aluminum cowling versus a carbon fiber or fiberglass one makes a difference, even a minor one, on the overall cooling?  There are other more significant differences between the AA-5B and AG-5B that could contribute to any cooling differences.  

   

Cliff  

  [quote]  

   [b]

Discover

Joined: 26 Feb 2007
Posts: 429

Posted: Fri May 14, 2010 6:04 am Post subject: AA-5B Cowling

One thing I don't care for is how emails that  appear to be from and replied to an individual go straight to this list. It is  especially hard to tell on my iPhone that this occurs.

  

 I've never heard of cowl flaps having been  designed primarily for "after landing cool down and heat up during taxiing." I  don't think so. In the planes I've owned that had cowl flaps the primary purpose  was to reduce the FAA required cooling design for climb to a more  effiecient cooling design for cruise. Less air required in cruise so the idea is  to reduce drag in cruise with the cowl flaps.

  

 Can you tell me of a particular plane that has  cowl flaps specifically designed for cool down and  taxiing? 

 [quote]   ---

flyv35b(at)minetfiber.com
Guest

Posted: Fri May 14, 2010 6:40 am Post subject: AA-5B Cowling

 I've never heard of cowl flaps having been  designed primarily for "after landing cool down and heat up during taxiing." I  don't think so. In the planes I've owned that had cowl flaps the primary purpose  was to reduce the FAA required cooling design for climb to a more  effiecient cooling design for cruise. Less air required in cruise so the idea is  to reduce drag in cruise with the cowl flaps.

  

 Absolutely, as I pointed out in my email.

  

 Cliff



 [quote] [b]

flyv35b(at)minetfiber.com
Guest

Posted: Fri May 14, 2010 6:51 am Post subject: AA-5B Cowling

Under cowl temps will invariably increase immediately  after landing before they start to decrease, no matter what the cowling is made  of.  I see this on my Bonanza and watch the oil temp increase whether or  not my cowl flaps are open or closed.  Most of the time I open both cowl  doors after shutting down to allow the heat out, especially if it's a short turn  around and I'm going to take off right away.  Cowl flaps are not for this  but for controlling temperatures (mainly cylinder head temp) during slow speed  climb out when there is much lower air flow than during cruise.  With a  fast plane that cruises at a much higher speed than it climbs you will add a lot  of drag at cruise speed because there will be a lot more airflow than needed for  this flight condition.  Having cockpit adjustable cowl flaps is very  beneficial in managing this airflow and reducing cooling drag and increasing  cruise speed.  On my Bonanza I can see about 4 kts of speed increase by  closing the cowl flaps at cruise speed condition.

  

 Cliff

 [quote]   ---

GrummanDude

Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA

Posted: Fri May 14, 2010 10:10 am Post subject: AA-5B Cowling

For the third day in a row, I've been unable to read my mail on AOL.  

This happened last year for a couple of days and it pissed me off  

then. This is the fourth time this year that they've fucked with the  

email. I've run out of patience.  I've had the same email addresses on  

AOL since 1995. But, I need access to email for business.

Please change my email to teamgrumman(at)yahoo.com

Thanks

Sent from my iPhone

On May 13, 2010, at 2:53 PM, G Vogt <teamgrumman(at)aol.com> wrote:

[quote] 

 I've offered cowlings for sale before and no one responded. I just  

 sold 3 to Fletcher for real cheap so, if there is a demand, call  

 Fletcher. They have some at bargain basement prices.

 Sent from my iPhone

 On May 13, 2010, at 6:46 AM, "Andy Thomas" <andy747(at)charter.net>  

 wrote:

> 

> >

>

> Mark,

>

> put me on the list as interested and I would like a picture when  

> available. Where are you located (thinking of shipping cost).   

> Thanks...

>

> Andy Thomas

>

> ---

_________________
Gary
AuCountry Aviation
Home of Team Grumman

GrummanDude

Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA

Posted: Fri May 14, 2010 10:30 am Post subject: AA-5B Cowling

I first heard this myth 10 years ago on a visit to Fletchair.  



Sent from my iPhone



On May 14, 2010, at 6:31 AM, "flyv35b" <flyv35b(at)minetfiber.com (flyv35b(at)minetfiber.com)> wrote:



[quote]   st1\:*{behavior:url(#default#ieooui) }  <![endif]-->       <![endif]-->       <![endif]-->   

Howâ€™s the  cooling?  A lot has been said about the AG5B carbon fiber cowling not  dissipating heat well. 

  

John 

  

That's the first I have  heard about that.  Do you really think that the heat transfer through an  aluminum cowling versus a carbon fiber or fiberglass one makes a difference,  even a minor one, on the overall cooling?  There are other more  significant differences between the AA-5B and AG-5B that could contribute  to any cooling differences. 

  

Cliff

  	  Quote: 	
		   



href="http://www.matronics.com/Navigator?TeamGrumman-List">http://www.matronics.com/Navigator?TeamGrumman-List

href="http://forums.matronics.com">http://forums.matronics.com

href="http://www.matronics.com/contribution">http://www.matronics.com/contribution



	
 

[b]

_________________
Gary
AuCountry Aviation
Home of Team Grumman

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