Mailing List lml@lancaironline.net Message #27052
From: <Newlan2dl@aol.com>
Sender: Marvin Kaye <marv@lancaironline.net>
Subject: larry zeliadt question, Epoxy on wingtips
Date: Wed, 15 Dec 2004 01:22:44 -0500
To: <lml@lancaironline.net>
In a message dated 12/13/2004 12:49:20 PM Pacific Standard Time, lorn@dynacomm.ws writes:
 
Hi Larry
 
I just happened to see this so I don't know why I didn't get your posting (although I travel a lot and sometimes can't read all of the postings).  Anyway, you asked about the DR-5 resin used as a bonding dhesive.  Yes, it's very good stuff.  The peel strength is very high compared to single phase resins like West System and Jeffco.  A higher strength epoxy designed for bonding is the DRXTHX (I think that's right).  I use it for all critical applications of adhesive and the "THX" designation means it has been thickened to make it thixotropic.  Itis still a bit prone to sag but hangs well for medium thick bond lines.  Extra thixotrope like "cab-O-Sil will make it truly thixotropic and hang on anything as a paste.  It has a higher bond strength than the DR-5 and DR-7 resins.  The Hysol though is the highest.
 
As to whether it will work, I would say it should.  It will distribute the loads better than the screws called out and basically anything that the Jeffco can do, the DR-5 and -7 can do better.  I don't know about the "poly Epoxy" from Aircraft Spruce but if I remember correctly, isn't that a toughened (2 phase) epoxy?  Note that all 2 phase epoxies are toughened but not all toughened epoxies are two phase.
 
Dan
Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster