I agree, Al. More than likely it was
the plugs telling me they were in need of change.
I used auto gas exclusively in the
fist year of flying with no problem and it was not until I had a fire incident
pouring in auto fuel from a container that I decided to primarily use 100LL -
for safety reasons. Well, that plus the fact there was very seldom auto
fuel available at an airport away from home. The only two down sides I
have found using 100LL is the cost and the lead fouling of spark plugs.
Ed
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Al Gietzen
Sent: Tuesday, October 21, 2008
1:43 AM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Water in
Fuel?? (or another adventure in the aviation events of Ed Anderson)
John, I think your
analysis makes lots of sense for a gravity fed fuel system (i.e. no
pumps). However, I would think that the EFI pumps would churn the water
and fuel together pretty thoroughly.
Yes the pump will mix it up pretty well;
but it will separate out again in the line..
In any case, I did use
some auto gas back a couple of flights ago and did not like it. The
engine had a bit of a miss – nothing bad, but just noticeable –
could have been the plugs needing a change to be fair
It seems to me this is unlikely an
effect of using mogas. Running my engine on the dyno showed a very slight
improvement in performance with 87 octane mogas over 100LL. I think the
theory was faster propagation of the flame front in the odd-shaped combustion
chamber. And as you know, the lead is no friend to the spark plugs.
Al
__________ Information from ESET NOD32 Antivirus, version of virus signature
database 3267 (20080714) __________
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com