:29 PM
To: Discussion of issues relating to Soaring in Australia.
Subject: Re: [Aus-soaring] Shell 98 and fibreglass
I must admit I used epoxy resin Ciba/G 3600 and not vinyl ester. I am going
to try again using vinyl ester.
I am doing another trial with shell/liberty 98 and BP 98 with smell
I believe the smell could be Toluene, used as an octane booster. (Maybe)
Dennis
On 5/02/2015 2:29 pm, Ian Mc Phee wrote:
I must admit I used epoxy resin Ciba/G 3600 and not vinyl ester. I
am going to try again using vinyl ester.
I am doing another trial with shell/liberty 98 and BP 98
Ian,
Consult the resin chemist as to which vinylester
to use. There are many types with optimum
properties for different uses. Vinylester is used
for making below ground fuel storage tanks so
there will be one for various types of mogas.
-
I used to run Super in the TOP when
Nasty stuff.
I guess they have to do something to boost the octane of the refinery tailings
we seem to get here for mogas.
Mike
On 5 Feb 2015, at 4:40 pm, dennis hipperson dennishipper...@gmail.com wrote:
I believe the smell could be Toluene, used as an octane booster. (Maybe)
I must admit I used epoxy resin Ciba/G 3600 and not vinyl ester. I am
going to try again using vinyl ester.
I am doing another trial with shell/liberty 98 and BP 98 with smell. In
every case the shell smells like turps is added where as BP smells normal
like you expect fuel to smell like.
I'll stick to Avgas in the BD-4 even though the 7:1 compression ratio engine
(same as Super Cub) can handle unleaded from an octane rating basis.
Unless things have changed, with some two strokes used in SLGs like
the Solo engines, the manufacturer recommends using 95, not Avgas. The
claim is
tell you is the effect on resin of the fuel which
happened to be in the service station tanks 3 months ago.
...John
From: Future Aviation Pty. Ltd.
Sent: Tuesday, February 03, 2015 3:16 PM
To: Discussion of issues relating to Soaring in Australia.
Subject: Re: [Aus-soaring] Shell 98
At 01:44 PM 3/02/2015, you wrote:
This is sample of I think 3 layers of 125 glass
which was left in shell 98 for about 2 months.Â
 The glass is now soft and can be easily
twisted like say clear packaging.  It is a
bit sticky on surface. It seems it will never harden up again.
Thus
Hi Ian
Many thanks for sharing that with us.
It confirms what Gerhard Waibel told me about 15 years ago. He said that fuel
bladders are
preferable to wing tanks because you never know what additives get added to
the fuel in
future and what they do to the resins used in those wing tanks”.
: Tuesday, 3 February 2015, 17:05
Subject: Re: [Aus-soaring] Shell 98 and fibreglass
Most (all?) oil companies will tell you that mogas is not approved for aviation
use. There are a number of reasons for this but one is the much greater
compositional variability of mogas compared with avgas
.
Subject: Re: [Aus-soaring] Shell 98 and fibreglass
The last point by John is something that I have been thinking about lately.
With almost all (all?) PULP now being imported I would expect greater time lags
between production and supply at the pump.
We have posted before about our fascinating
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