Ethanol (+ humidity) makes a mess of aluminum float bowls and jets
etc...... I've rebuilt many a mower with such damage, and the bings are of
the same materials fwiw.
Here is a good paper listing many an issue from a while ago:
https://iopscience.iop.org/article/10.1088/1757-899X/370/1/012009/pdf
Cheers,
Pete
On Thu, Mar 18, 2021 at 6:01 PM Steve Ivell <SteveIvell@pestproof.co.uk>
wrote:
> Hi Jonathan
>
> The Rotax engine is fine with ethanol, as you mention in Brazil. The
> engine is designed for mogas and really doesn't like Avgas.
> My feeling is that the LAA are living in the past and if it's not Avgas
> it's no good!! Well it's time to smell the coffee and get used to the her
e
> and now. 10% ethanol is coming and I'll be using it.
> It might mean changing the rubber more often but that's still much more
> affordable than having to use Avgas.
> Obviously just my humble opinion.
>
> Cheers
> Steve
> GSTES
> XS Trigear 912s..... nearly finished!!
>
> ------------------------------
> *From:* owner-europa-list-server@matronics.com <
> owner-europa-list-server@matronics.com> on behalf of JonathanMilbank <
> jdmilbank@yahoo.co.uk>
> *Sent:* Thursday, 18 March 2021, 21:35
> *To:* europa-list@matronics.com
> *Subject:* Europa-List: Ethanol in fuel. What about Brazil?
>
> jdmilbank@yahoo.co.uk>
>
> We in the UK are faced with the prospect of ethanol content in fuel being
> raised in September from 5% to 10%. About 10 or so years ago (or was it
> longer?) this whole subject got debated to death, with the LAA Light
> Aircraft Association taking the position that we should always check each
> fuel batch for ethanol before pouring it into our fuel tanks. The test
> using a glass test tube with about 1" of water in the bottom, noting its
> level, then adding about 4 X as much fuel before shaking well and allowin
g
> to settle to see if the water level had apparently risen, was not
> particularly accurate and I never saw the water level rise.
>
> The LAA's understandable position then was "If you find evidence of
> ethanol in fuel, then don't use it!" This position is very unlikely to
> change, which will mean that Rotax engines should either use avgas or UL9
1.
> For those of us living in god-forsaken northern latitudes, neither of the
se
> fuels are available and it would be economically prohibitive to either
> import them to our remote airfields or to fly to the nearest large airpor
t
> to refuel, while simultaneously incurring landing fees and handling charg
es
> of =C3=82=C2=A3200!
>
> Obviously (at least to me) Europas should cope with 10% ethanol in fuel,
> because I believe that at least one, maybe more Europas in Brazil were
> using fuel with ethanol having well in ecxess of 20%. Seemingly our
> "plastic" fuel tanks, automotive fuel lines and carburettors are unfased
by
> ethanol.
>
> Please correct me if I'm wrong about Brazil and let me know whether
> ethanol is to blame for any fuel tank failures in Europas. Thank you.
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=501000#501000
>
>
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