Hi Bob:
Good idea. Use it for the chock, exclusively!
On the day of the first flight you must feel comfortable on wings
and structure built. I used most of my "old resin/hardener to fix up
my car and household items as I figured when it breaks it will be at
least on the ground.
There is not that much resin/hardener, esp with the new wings (I
built mine the hard way) so for a few 100 dollars you get fresh stuff
and you don't start sweating on day of final inspection. Consider
your epoxy the bolts holding the entire plane together and you can
see that a few 100 dollars for replacement are well worth the peace
of mind. I assume you are saving on other hardware, good quality
instruments, etc...
Christoph Both #223 Wolfville, Nova Scotia, Canada
On 30 Oct 00, at 21:48, J R (Bob) Gowing wrote:
Subject: Re: Use-By Date of Hardener/Resin
Philip
All the resin and hardener I got with my kit went out of 2 yr use by
date
before I had make anything other than the test chock.
I just recently gave two unopened containers of 1996 manufacture
and the
associated slow hardeners to a friend who has completed and
flown his
Europa. I really have just begun building with resin from a more
recent
kit. He made trial mixes from each which set in the cup at about
1/4 inch
thick. Both samples look good and give a good "ring" when struck
together.
He thinks they compare favourably with those of new material which he has.
I tried to find out about suitable tests from Standards Association of
Australia, but I only found material on fibre glass pipes. I thought there
should have been engineering tests such as breaking beams to get a tension
reading or a compression test as for concrete specimens which we could use
to assume the tension or compression measures against tests on new
materials and so rate our outdated materials as suitable or not suitable.
No useful information gleaned so far.
The only answer I have had to our question is that you can have a
laboratory test done in the UK for 250 UK pounds.
Hope we get some answers!
Best Wishes from JR (Bob) Gowing UK Kit No 324
24 High St Bega NSW 2550 Australia
----- Original Message -----
From: <philip.lincoln@ESSNET.SE>
Subject: Use-By Date of Hardener/Resin
> A bit of a break at the moment but I hope to be back building soon. In
> the
meantime a question...
>
> I understand that the shelf life of the epoxy hardener & resin is 2
> years.
I have some slow hardener left with the manufacturing date 11/98 on it.
Does this mean it should be okay until the beginning or end of 11/2000?
I'd really like to use it for my last "big" layup (top of a flap) to have
more working time, and want to avoid buying more hardener (I have a lot of
standard left that was made 02/99). > > Thanks, > > Philip (Tri-gear,
#426) >
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