[NSRCA-discussion] Bad fuel

Mon Jan 15 14:00:50 AKST 2007

Hi Jim,

I have never had a problem in my many years of flying when I sourced and
kept my own fuel mixing ingredients from reputable suppliers. On this
occasion I purchased some methanol from a club member who sold me some of
his own methanol because I was out and needed some in a hurry. Somehow his
batch was contaminated but I never bothered to find out why. Lesson learned
- never buy when you don't know were it has been. A couple of dollars of bad
methanol has ruined $120.00 of good oil and nitro (Grrrrr).

Peter 

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From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of
jivey61 at bellsouth.net
Sent: Tuesday, 16 January 2007 04:56 AM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] Bad fuel

Peter

I had fuel trouble 1.5 years ago and my problem was the can I was pouring
fuel into to pump it into the fuel tank.

Something in the tank was growing and contaminating the fuel.I lost most of
the flying season twiddling and tweaking.I found my problem when I tried
flying both my planes in the same day. I realized both had the same trouble
and the only common thing was the fuel out of the fill can.

>From now own I pump fuel out of the plastic jug and have not had problem
since.

Do you pump out of the jugs? Hope this idea helps.

Jim Ivey

----- Original Message ----- 

From: Peter <mailto:pentagon.systems at bigpond.com>  Pennisi 

To: 'NSRCA Mailing List' <mailto:nsrca-discussion at lists.nsrca.org>  

Sent: Monday, January 15, 2007 1:06 PM

Subject: Re: [NSRCA-discussion] Bad fuel

Hi Matt,

I did try the run the suspect fuel in my DZ 160 as well as my heli and I had
problems with both. As suggested the engine at WOT seemed to run fine but
neither engine would idle or transition reliably. I replaced plugs and
stuffed around with tuning and even swapped an engine out until I worked out
the fuel was the problem.

It looks as if the fuel will be destined for the garden shed. 30% glow fuel
is an excellent igniter for weed eaters which are stubborn to start. Throw a
little down the throttle barrel and the unit roars to life on the first pull
start every time guaranteed. I even tried to run it on this stuff some time
ago but that is a different story.

Thank you all for your help.

Regards,

Peter

  _____  

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of
rcmaster199 at aol.com
Sent: Tuesday, 16 January 2007 03:43 AM
To: nsrca-discussion at lists.nsrca.org
Subject: Re: [NSRCA-discussion] Bad fuel

No it does not. Water is totally miscible in the methanol and will not come
out of solution. Methanol could be dried using silica gel, an industrial
desiccant, by passing the fuel through a filtering bed containing the
desiccant.

There was a study done a few years ago by Joe Wagner

 or Peter Chinn I believe (noted engine men) who added a considerable
percentage to regular model fuel and got surprising results....the engine
produced more power. The theory was that oxygen available from the
decomposition of water was available for more complete combustion of the
fuel. Of course, that's at full throttle.....I would question the transition
qualities of any water containing fuel, and transition is what we drive for
most. 

Pete, if you haven't done it yet, it would be worthwhile to actually run the
stuff before making any decisions as to what to do next

MattK

-----Original Message-----
From: patterndude at tx.rr.com
To: nsrca-discussion at lists.nsrca.org
Sent: Mon, 15 Jan 2007 1:23 AM
Subject: Re: [NSRCA-discussion] Bad fuel

Does this really work?  The water that is in solution will separate and
freeze?  

--Lance

----- Original Message ----- 

From:  <javascript:parent.ComposeTo('Tom.Koenig at actewagl.com.au',%20'');>
Koenig, Tom 

To:
<javascript:parent.ComposeTo('nsrca-discussion at lists.nsrca.org',%20'');>
NSRCA Mailing List 

Sent: Sunday, January 14, 2007 4:23 PM

Subject: Re: [NSRCA-discussion] Bad fuel

Peter,

Stick it in the freezer. The water will freeze, just skim it off. 

Tom

-----Original Message-----
From:
<javascript:parent.ComposeTo('nsrca-discussion-bounces at lists.nsrca.org',%20'
');> nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Peter Pennisi
Sent: Monday, 15 January 2007 9:11 AM
To: 'NSRCA Mailing List'
Subject: [NSRCA-discussion] Bad fuel

I have 4 gallons of 30% nitro fuel which was mixed with bad Methanol
(unknown at the time) the rest of the ingredients were fine.

I am assuming that moisture may have got the drum of methanol but I am not
sure.

Is there anything I can do to recover this fuel for at least sport plane use
or do I count my losses and throw it out?  

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