[NSRCA-discussion] Bad fuel

Mon Jan 15 09:50:53 AKST 2007

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 Pennisi 
  To: 'NSRCA Mailing List' 
  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

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  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: Koenig, Tom 

    To: 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: 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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