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                           TeamGrumman-List Digest Archive
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                     Total Messages Posted Fri 10/16/09: 1
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Today's Message Index:
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     1. 10:34 AM - Bonding  (teamgrumman@AOL.com)
 
 
 
________________________________  Message 1  _____________________________________


Time: 10:34:38 AM PST US
Subject: TeamGrumman-List: Bonding
From: teamgrumman@AOL.com

The temp yesterday was 150 degrees.  I was going to wait the full 7 days,
 but, I've been able to keep the temp above 120 degrees since installation
 and over 150 for the last 2 days.  If I extrapolate the data Hysol has,
 it isn't linear.  So, the best curve fit I can get shows that I need 120
 degrees for 5 days.  


>From the initial 'pulling the ELT covers off' to today, I have about 30 ho
urs in the project.  That includes stripping and sandblasting all of the
 pulley brackets, horizontal stub spar, etc for powder coating, trial fitt
ing, match drilling, and bonding.  About the only place I can see where ti
me can be saved is sealing up the aft end for alodining.  I'd do the next
 one a little differently to save cleanup time.


I still have to repair the tail tie-down area.  Whoever patched it did a
 real hack job.  BUT, they did use .040 rivets in .032 sheet metal (airfra
me) to attach a piece of .025 doubler.  


Then, I need to prime, paint, and put it all back together.  


Test samples:  I made 6 sets of test samples to try various surface roughn
ess configurations.  We'll see what the results are.  

 

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