 |
Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
|
| View previous topic :: View next topic |
| Author |
Message |
GrummanDude
Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA
|
 Posted: Wed Jul 11, 2007 11:39 am Post subject: Cowling Update |
 |
|
I'm in the process of installing the first production cowling.
The one I installed on my plane was actually a prototype.
Between mine (the prototype) and Brian's (the first production cowling)
we made some changes to the joggle where the upper cowling meets the
lower cowling, the lay-up schedule on both the upper and lower to make
them stiffer, and the mounting of the inlets and cooling exit ramps.
Everything worked out well except the joggle. The cowling has to go
back to Lancaster to get that fixed. Should only take a couple of
days. Still, now you know why I wanted to install the first 5
cowlings. Work out the bugs and make sure the installation
instructions make sense.
So far, I have about 25 to 30 hours invested in fitting the cowling to
the plane. This is one area where you don't want to trim off too much
material.
So, Brian, about that trip to Oshkosh . . . . . . .
________________________________________________________________________
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:
http://www.matronics.com/Navigator?TeamGrumman-List |
|
_________________
Gary
AuCountry Aviation
Home of Team Grumman |
|
| Back to top |
|
 |
GrummanDude
Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA
|
| Posted: Mon Jul 23, 2007 10:26 pm Post subject: Cowling Update |
|
|
For those following the saga, I'm installing the first production
cowling.
Fitting the cowling, initally, took about 30 hours.
Cutting and fitting the baffles has taken about 80 hours so far.
- The two biggest headaches are the left rear corn baffles. I will be
having them made int he futre instead of modifying RV-6 baffles. Van's
F*#ked up when he designed the left ear corner. It could be done a lot
easier. The baffle behind #3 needs to have s duct installed to get the
air around the back of the cylinder. Van's baffle sits right against
it and blocks the air flow around the back. No way around that without
resorting the the horribly designed Grumman baffles. At least they
have a duct to get air around the back. Then, installing a 4 inch
flanged aluminum duct from an AG5B next to it get interesting. Now
Iknow why it took a month toinstall my baffle on the first cowling.
Next step is to fine tune the heights of the baffles. I had my
fabricator add 1/8 inch foam sandwich to the underside of the upper to
make it stiffer. That worked, it just makes fitting the baffles
different from mine.
I'm making up the installation instructions as I go. It would be nice
if a couple more brave souls would buy into the first phase so I can
fine tune the installation instructions. As with the first production
cowling, I'll fit the cowling for free. I just need to get the details
on the baffles sorted out now.
Gary
________________________________________________________________________
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:
http://www.matronics.com/Navigator?TeamGrumman-List |
|
_________________
Gary
AuCountry Aviation
Home of Team Grumman |
|
| Back to top |
|
|
az_gila
Joined: 17 Jun 2006
Posts: 99
Location: Tucson, AZ
|
| Posted: Mon Jul 23, 2007 11:27 pm Post subject: Cowling Update |
|
|
| Quote: |
- The two biggest headaches are the left rear corn baffles. I will be having them made int he futre instead of modifying RV-6 baffles. Van's F*#ked up when he designed the left ear corner. It could be done a lot easier. The baffle behind #3 needs to have s duct installed to get the air around the back of the cylinder. Van's baffle sits right against it and blocks the air flow around the back. No way around that without resorting the the horribly designed Grumman baffles. At least they have a duct to get air around the back. Then, installing a 4 inch flanged aluminum duct from an AG5B next to it get interesting. Now Iknow why it took a month toinstall my baffle on the first cowling.
....
Gary |
Gary... the standard Vans builders fix is to add washers/speacers (a 1/4 inch IIRC) under the baffles by #3 cylinder. This gives the duct you refer to above...
gil in Tucson... wondering why the 180 HP RVs have less cooling problems than our Tigers.... [quote][b]
| | - 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:
http://www.matronics.com/Navigator?TeamGrumman-List |
|
|
|
| Back to top |
|
|
GrummanDude
Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA
|
| Posted: Tue Jul 24, 2007 10:06 am Post subject: Cowling Update |
|
|
Tigers don't have a cooling problem. That's a myth.
--
| | - 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:
http://www.matronics.com/Navigator?TeamGrumman-List |
|
_________________
Gary
AuCountry Aviation
Home of Team Grumman |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
