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First Production Cowling

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GrummanDude

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

Posted: Wed Jun 20, 2007 11:23 am Post subject: First Production Cowling

I've got the first production cowling.  I'm going to start taking 

pictures of it today.  The DER will be here Monday for the conformity 

inspection.  Now it gets fun.  The offer still stands.  I need to sell 

3 more cowlings at $6000/ea.  The hinge for the center upper cowling is 

$385.  Baffles, before they are trimmed to fit, run about $300 (that's 

a guess, the first ones will be the hardest.)  Painting will run a few 

hundred dollars.  I recommend the short stack powerflow.  I mean, why 

cut up the cowling to put the stock exhaust in if you don't have to?

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AuCountry Aviation
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mattd(at)drahz.com
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Posted: Wed Jun 20, 2007 2:24 pm Post subject: First Production Cowling

OK - I really want your cowling. If I were in CA this would be a slam dunk.

Is it yet good enough to have another good A&P install?



matt drahzal

teamgrumman(at)aol.com wrote:

 	  Quote: 	
		   



 I've got the first production cowling.  I'm going to start taking 

 pictures of it today.  The DER will be here Monday for the conformity 

 inspection.  Now it gets fun.  The offer still stands.  I need to sell 

 3 more cowlings at $6000/ea.  The hinge for the center upper cowling 

 is $385.  Baffles, before they are trimmed to fit, run about $300 

 (that's a guess, the first ones will be the hardest.)  Painting will 

 run a few hundred dollars.  I recommend the short stack powerflow.  I 

 mean, why cut up the cowling to put the stock exhaust in if you don't 

 have to?

 ________________________________________________________________________

 from AOL at AOL.com.

- The Matronics TeamGrumman-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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GrummanDude

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

Posted: Wed Jun 20, 2007 8:43 pm Post subject: First Production Cowling

Sounds to me like you need an excuse for a vacation.



I'll know more about how much expertise it needs to install the cowling 

after I have installed a couple.  The reality is, based on the 

workmanship I see on pretty much every plane I work on for the first 

time, I'd say there are very few A&Ps with whom I'd trust the 

installation.  The primary area of concern for me is the close 

tolerances.  For example: there is less than 3/16 inch gap between the 

prop and the cowling.  And, the gap between the metal baffles and the 

cowling are different from side to side because the engine moves 

asymmetrically in its mount.



Agina, like I said, I'll know more as I build the installation 

instructions.



Gary

PS, I weighed the cowling.  17.5 pounds without the hardware.



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AuCountry Aviation
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