REFLECTOR: Oil in Fiberglass

Wed Feb 23 11:57:15 CST 2011

Thanks Brian. My ducts are installed so no way to seal under them. I guess
I'll have to settle on just sealing the nose around the oil cooler and the
floor around the retract gear.

From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Brian Michalk
Sent: Wednesday, February 23, 2011 11:35 AM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Oil in Fiberglass

For me, I had a leaking fitting after putting oil in the engine for the
first time.  Overnight, the oil ran down the lines and into the duct.  The
oil in duct scenario is very common.

So, I would seal the duct areas, and about the rear third of the fuselage.
However, I think the nose wheel size determines where stuff wants to puddle.
Sealing the ducts will probably be the best.
If you can't seal the ducts, I wouldn't bother.  

Probably epoxy with cabosil to thicken it up a little.

On 2/23/2011 10:06 AM, Tom Falls wrote: 

This situation concerns me. I assume the best way to prevent it is to coat
the interior surface around the oil cooler. Is straight epoxy sufficient or
should it be mixed with something . . like flox? How many coats? I thought I
remember a while back that we should coat the floor inside the keel for a
retract velo. Any other areas? I want to get this done before proceeding any
further and have started removing any equipment that will be in the way.

Thanks,

Tom

From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Hiroo Umeno
Sent: Tuesday, February 22, 2011 5:57 PM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Oil in Fiberglass

I heard that trick and I am yet to try it.  Do you go "top down" or "bottom
up"?

Meaning, from the side where oil entered in the first place or from where it
started seeping out?  I am thinking bottom up but wanted to check.

From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Alex Balic
Sent: Tuesday, February 22, 2011 12:42 PM
To: 'Velocity Aircraft Owners and Builders list'
Subject: Re: REFLECTOR: Oil in Fiberglass

Yea- the Freon has almost no surface tension, so it will penetrate right in
there, then it will boil its' way back out and takes the oil with it- just
shoot it on, and sort of wipe it up at the same time (using gloves) it will
completely degrease the surface.

  _____  

From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of 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.

  _____  

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  <mailto:humeno at microsoft.com> <humeno at microsoft.com>
To: Velocity Aircraft Owners and Builders list  <mailto:reflector at tvbf.org>
<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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