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                           TeamGrumman-List Digest Archive
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                     Total Messages Posted Mon 07/23/07: 1
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Today's Message Index:
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     1. 11:26 PM - Cowling Update  (teamgrumman@aol.com)
 
 
 
________________________________  Message 1  _____________________________________


Time: 11:26:58 PM PST US
Subject: TeamGrumman-List: Cowling Update
From: teamgrumman@aol.com


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.


 

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