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From: "George Lendich" <lendich@optusnet.com.au>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-1782143@logan.com>
Subject: Re: [FlyRotary] Re: alcohol in fuel
Date: Mon, 22 Jan 2007 18:23:35 +1000
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Marv,
Spoke to an Industrial Chemist with a long history in resin manufacture. He 
tells me that only about 4 companies in the world manufacture resin and 
distribute it - the complex part is the catalyst. The better the catalyst 
the better the total product.
George ( down under)

> Just another data point for you to add to your list.  Jeffco 1307 resin 
> with 3102 or 3156 hardener is a 100:25 system by volume, or 100:22 by 
> weight.  The differences in the hardeners are time to cure... the 3102 is 
> a fast cure, with a 15 minute pot life, the 3156 is a slower cure, with 30 
> minute pot life.  I also use their 3179 hardener down here in FL where the 
> temps get outrageous in the summertime, for a 45-50 minute pot life.  The 
> 3179 also has a much lower viscosity than the other hardeners so it makes 
> a thinner mixture... makes wetting out much easier, even with temps down 
> into the 60s.  Once again, this is the resin system used in the Lancairs.
>
>    <marv>
>
>
> Dale Rogers <dale.r@cox.net> wrote:
>
>         To put a bit of perspective on this, one will be hard pressed to 
> find
> a laminating epoxy that is in the 100:25 range, such as Al W wrote.
>  E-Z Poxy  100:45 by weight
>  MGS 285/287 (and 335)  100:45 by weight
>  Pro-Set 100:30 by weight
>  AEROPOXY is 100:27 by weight
>  ACSpruce's data on the West System 105/205 spec was "5:1"
>  which suggests it is a volume measurement, but it doesn't have
>  the Rutan Blessing, last I knew.
>  IIRC, Perry Mick used MGS 335 and runs auto fuel in his EZ.
>
> --
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