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Thanks Bob
I was unsure how to interpret the results
----- Original Message ----- From: "Bob White" <bob@bob-white.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Monday, March 09, 2009 12:06 PM
Subject: [FlyRotary] Re: 87 OCTANE MOGAS TEST (SOREL-TRACY, PROVINCE DE QUÉBEC, CANADA)
Hi Yvon,
My interpretation would be the 25 to 40 ml increase represents 15 ml of
alcohol. That would represent
15 ml alcohol / 200 ml fuel + alcohol = 7.5 %
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:
Yesterday I went to the Sorel airport and tested the fuel in my
Zenith 90 liters tank.
This fuel already contains two stroke oil in the ratio of 1:130 per
volume.
In a cylindrical ungraduated container I poured 25 ml of tap water and
added 200 ml of fuel
After 1 hour and several vigourous shakings I observed an increase in
the volume of water to 40 ml
The increase is about 4% (?)
All quantities are approximate.
Since I began running and flying my 1986 Mazda 13B engine, I have tested
in flight all grades of mogas and also 100LL avgas. I would wait until
my fuel level was very low and would fill my tank with the différent
grade. Never detected a change in the performance of my engine. The only
times I drew water from my fuel tank was when it was filled with 100LL
avgas.
Yvon Cournoyer.
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