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Aeropoxy 6228 ~ NEV?

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EuropaXSA276(at)aol.com
Guest

Posted: Fri Apr 13, 2007 6:58 am Post subject: Aeropoxy 6228 ~ NEV?

I have been most interested in this product.  The Aeropoxy rep at Sun N Fun had told me the it was under testing by Europa as a replacement adhesive a few years back.  

 I talked with Andy a year later, at Sun n Fun inquiring about the testing. He replied that the product did not hold up to his expectations. Therefore it was never "approved".

 I most certainly would like to know more about the testing and what issues were found.  The 6228 has cost and accessibility benefits.

  

 Perhaps Nev could fill us in on the subject?

  

  

 Brian Skelly

Europa XS TriGear #A276

North Texas USA

You can see my build photos at:

http://www.europaowners.org/BrianS



See what's free at AOL.com. 

  [quote][b]

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NevEyre(at)aol.com
Guest

Posted: Fri Apr 13, 2007 7:44 am Post subject: Aeropoxy 6228 ~ NEV?

In a message dated 13/04/2007 16:00:08 GMT Standard Time,  EuropaXSA276(at)aol.com writes:

  	  Quote: 	
		     I have been most interested in this product.  The Aeropoxy rep at    Sun N Fun had told me the it was under testing by Europa as a    replacement adhesive a few years back.  

   I talked with Andy a year later, at Sun n Fun inquiring about the    testing. He replied that the product did not hold up to his    expectations. Therefore it was never "approved".

   I most certainly would like to know more about the testing and what    issues were found.  The 6228 has cost and accessibility benefits.

    

   Perhaps Nev could fill us in on the  subject?

	


 

 Hi Brian et all,

 The Aeropoxy adhesive is NOT suitable as a replacement for Redux / Araldite  420 in use on a Europa.

 Tests I carried out way back when , back to back, with Aeropoxy and 420  showed the Aeropoxy to be far too brittle.

 Lap joint test samples were made useing the pre preg laminates as in  the fuselage / wing skins, same materials / same sizes / same surface  preparation / same cure cycle / with both adhesives. Did 10 of each from  memory?

 Didn't need to get them scientifically strain tested [ by Slingsby,  which is what we had done with various lay up resins] a simple blow with a  hammer on one end of the tab , with the other end clamped in a vice showed  that the Aeropoxy bonded ones let go every time, whereas the  420 bonded ones would take one hell of a beating before eventually the pre  preg would fail.[ Same hammer ! ]

 The make up of the 420 includes rubber granules, so there is a fair amount  of '' give '' in the bond.

 This is allways a good test to check if the 420 has '' time lifed ''. [ in  spite of the very conservative expiry date set by the manufacturer ] If the  bond fails, bin it, if the glass fails, it is still good. 

 I also tested a couple of other adhesives [ at different times ] against  the 420, similar results.

 If there had been a suitable replacement to 420, it would have been used in  the U.S.A. as we had a lot of hassle getting the 420 shipped over [ Dangerous  Goods and all that !]

 Don't experiment and risk your life, just to save a few bucks ?

 Cheers,

 Nev.

     [quote][b]

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