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GrummanDude
Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA
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 Posted: Sun Sep 30, 2007 9:42 am Post subject: Cowling Update |
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It looks like the lightning strike issue has been resolved. I'll know
more in a week or two. The FAA flight tests on the stock plane are
completed and approved. The Power Flow didn't heat the carb heat the
required 90 degreed rise at 10,000 feet. (we got 86) so, I need to
investigate the locating of the probe. Next step is to get my new
cowling on the plane and redo all of the tests.
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Gary
AuCountry Aviation
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az_gila
Joined: 17 Jun 2006
Posts: 99
Location: Tucson, AZ
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| Posted: Sun Sep 30, 2007 9:55 am Post subject: Cowling Update |
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Gary... how about a little stainless steel wool around the tubes in the PowerFlow "box" to improve the heat transfer?
The ins and outs on my PowerFlow are also not very well sealed in the "box"...
gil A
At 10:41 AM 9/30/2007, you wrote:
[quote]--> TeamGrumman-List message posted by: teamgrumman(at)aol.com
It looks like the lightning strike issue has been resolved. I'll know more in a week or two. The FAA flight tests on the stock plane are completed and approved. The Power Flow didn't heat the carb heat the required 90 degreed rise at 10,000 feet. (we got 86) so, I need to investigate the locating of the probe. Next step is to get my new cowling on the plane and redo all of the tests.[b]
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flyv35b(at)minetfiber.com
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| Posted: Sun Sep 30, 2007 10:04 am Post subject: Cowling Update |
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What do you mean "resolved"? Did the FAA or the DER decide it wasn't
necessary and if so, why?
Cliff
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GrummanDude
Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA
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| Posted: Mon Oct 01, 2007 12:26 am Post subject: Cowling Update |
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I'll let you know after the testing is completed and that particular
FAR is eliminated as a requirement.
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Gary
AuCountry Aviation
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GrummanDude
Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA
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| Posted: Sat Oct 13, 2007 12:26 am Post subject: Cowling update |
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The cowling is installed on 1976T. It didn't fit exactly the same as
the original installation. I think I know now why the clearances on
the stock cowling and baffles are so sloppy. The next step is to get
the cam locks installed and finish the painting of the cowling.
Once the cowling is approved, the first 5 installations will be $9500,
installed, painted to match. The DER wants me to install the first 5
for verification of the installation instructions. The DER will be
monitoring the instllation and comparing what I do to the actual
installtion.
--------
On a similar note . . . . is there any interest in a fiberglass copy of
the AA1 cowling?
Is there a difference in the cowlings based on year/model?
How about a hinged upper cowling?
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Gary
AuCountry Aviation
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vk6xre(at)waus.net
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| Posted: Sat Oct 13, 2007 6:52 am Post subject: Cowling update |
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I think there would be some interest in a cowling for the pre 75 Traveler,
if others are like mine they are getting tatty with previous repairs and
riveted doublers etc.
Robyn
VH-ETT 1973 Traveler
YPJT Western Australia
Soon to be in NZ
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GrummanDude
Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA
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| Posted: Sat Oct 13, 2007 11:05 am Post subject: Cowling update |
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Hi Robyn,
Are you talking about a copy of the Traveler cowling or converting my
cowling to a Traveler. I would love to put my cowling on a Traveler.
Problem is, I don't have one, I'm not going to buy one (although I have
considered buying a Cheetah), and so far, no one has given me one for
an unspecified length of time to work out the installation differences
and get it certified. Maybe after I've sold 20 or 30 cowlings and
recouped some of my money I'll consider buying a Traveler just for that
purpose. The pre '75 Traveler would be easier than the 75 and up
AA5/AA5A.
Gary
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Gary
AuCountry Aviation
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n32romeo(at)aol.com
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| Posted: Sat Oct 13, 2007 8:25 pm Post subject: Cowling update |
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Yes, I think there is a lot of interest in replacement AA-1 cowls. Of most interest is replacement top cowls, but I assume that you could not make a replacement fiberglass top cowl that would mate with the original metal bottom cowl. But I think (depending on price of coarse) there would be interest in a complete replacement top and bottom cowls. The only change I am aware of from the original AA-1 cowl to the last AA-1C is the nose bowl change to the square inlets starting with the '76 B model and the C model.
Rich Harrison
AA-1B N1632Romeo
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