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Date: Mon, 9 Mar 2009 10:06:01 -0600
From: Bob White <bob@bob-white.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] 87 OCTANE MOGAS TEST (SOREL-TRACY, PROVINCE DE
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Hi Yvon,

My interpretation would be the 25 to 40 ml increase represents 15 ml of
alcohol.  That would represent=20
15 ml alcohol / 200 ml fuel + alcohol =3D 7.5 %=20

I've never actually done one of these tests, so if I've got it wrong
let me know. :)

Bob W.


On Mon, 09 Mar 2009 10:58:42 -0400
Yvon Cournoyer <geryvon@videotron.ca> wrote:

>=20
>     Yesterday I went to the Sorel airport and tested the fuel in my=20
> Zenith 90 liters tank.
>=20
>     This fuel already contains two stroke oil in the ratio of 1:130 per=20
> volume.
>=20
> In a cylindrical ungraduated container I poured 25 ml of tap water and=20
> added 200 ml of fuel
>=20
> After  1 hour and several vigourous shakings I observed an increase in=20
> the volume of water to 40 ml
>=20
> The increase is about 4% (?)
>=20
> All quantities are approximate.
>=20
> Since I began running and flying my 1986 Mazda 13B engine, I have tested=
=20
> in flight all grades of mogas and also 100LL avgas. I would wait until=20
> my fuel level was very low and would fill my tank with the diff=E9rent=20
> grade. Never detected a change in the performance of my engine. The only=
=20
> times I drew water from my fuel tank was when it was filled with 100LL=20
> avgas.
>=20
> Yvon Cournoyer.
>=20
>=20
> =20
>=20
>=20
> --
> Homepage:  http://www.flyrotary.com/
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t.html


--=20
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