REFLECTOR: Oil in Fiberglass

[Laurence Coen]

Brian,

Good question.  R134a which is the replacement for R12 has a very low boiling point and can cause frostbite if you get it on your skin or worse if it gets in your eye.  R113 is a Freon with a boiling point of 48C (118F) and remains a liquid instead of vaporizing.  It is now a banned substance and the replacement is called S-316.  Hexane or Pentane would also work but so will soap and water together with a shop-vac to suck it up.  Your mileage may vary. 

Larry Coen
N136LC


From: Brian Michalk 
Sent: Tuesday, February 22, 2011 9:48 AM
To: Velocity Aircraft Owners and Builders list 
Subject: Re: REFLECTOR: Oil in Fiberglass


How does this work?

Spray the freon in, and it penetrates the material, then pushes the oil out?

On 2/22/2011 8:19 AM, Alex Balic wrote: 
  USE Freon- but make sure you get the can that does not have oil added to it -, and make sure you keep your hands away from the liquid it is very cold. It will take the oil out.

   


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  From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of Al Gietzen
  Sent: Monday, February 21, 2011 7:42 PM
  To: 'Velocity Aircraft Owners and Builders list'
  Subject: Re: REFLECTOR: Oil in Fiberglass

   

   

  Use a heat gun and see if oil bubbles out.

   

  John

  Be careful.  You could easily damage the foam core, and/or cause some distortion of the fiberglass by heating above 160-170F.  And the oil doesn't boil off; it will only come out due to expansion of air in the pores.  Perhaps better off flushing with a solvent. 

  Al


  --- humeno at microsoft.com wrote:

  From: Hiroo Umeno <humeno at microsoft.com>
  To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
  Subject: Re: REFLECTOR: Oil in Fiberglass
  Date: Tue, 22 Feb 2011 01:10:59 +0000

  I have the same issue in my nose compartment.  The oil cooler pipe had a slow leak at the fitting and has saturated the un-sealed floor of the nose compartment with oil.  I noticed it when I saw that the cockpit floor was rather slippery.  Is there  way to get that out?  Or is that a permanent "feature" of my plane?

   

  Hiroo 

    

  From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of aminetech at bluefrog.com
  Sent: Saturday, February 19, 2011 5:49 PM
  To: Velocity Aircraft Owners and Builders list
  Subject: REFLECTOR: Oil in Fiberglass 

    

  I didn't realize how porous fiberglass is.  The oil line connection to the cooler was leaking.  I cleaned up the oil and was using a heat gun on heat shrink tubing.  In the process the fiberglass under the cooler got heated up and oil began bubbling out of the fiberglass, a LOT of oil.  So I used the heat gun on all areas that had oil and more oil came out.  When I have time, I'll check other areas to see what bubbles out. 

    

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