REFLECTOR: Jeffco spec sheet

Peter Braswell peter.braswell at gmail.com
Wed Mar 21 09:40:49 CDT 2012


Chris,
I've got a lot of time and money invested in Jeffco and I'm just about
ready to close out the strakes.  Is the flaking / failure of your Jeffco
the result of exposing to mogas or ????

Best,
Peter

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On Wed, Mar 21, 2012 at 10:35 AM, Chris Barber <cbarber at texasattorney.net>wrote:

>  I originally used Jeffco and had complete failure in both strakes. It
> chipped off in small sheets. I had to almost completely rebuild my strakes.
> I was not flying yet (still not but may be very close). This was a few
> years ago. I rebuilt with just EZ-84 (I have a five gallon kit of Jeffco if
> anyone is interested). I put in several test strips of the EZ-84 with the
> mogas I have been using back then and as of two weeks ago the test strips
> appeared perfect. Just some data points.
>
>  Chris Barber
> Houston
>
> Sent from my iPhone 4
>
> On Mar 20, 2012, at 6:00 PM, "John Dibble" <aminetech at bluefrog.com> wrote:
>
>   There's a very thin light grey coat.  Kinda looks like primer
> overspray.  There's numerous scratches in it and quarter sized bare spots
> at the bottom.  Underneath it is a light olive color, similar to other
> unpainted areas.
>
> John
>
> On 3/20/2012 1:44 PM, Laurence Coen wrote:
>
> John,
>
> Jeffco is light grey and EZpoxy is dark tan or light brown.
>
> Larry Coen
> N136LC
>
>  *From:* John Dibble <aminetech at bluefrog.com>
> *Sent:* Tuesday, March 20, 2012 12:55 PM
> *To:* Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> *Subject:* Re: REFLECTOR: Jeffco spec sheet
>
>  I was thinking a better product was needed.  Sounds like we already had
> one.  Is there a way I can tell what was used in my tank?
>
> John
>
> On 3/20/2012 11:01 AM, Laurence Coen wrote:
>
> I find it interesting that the spec sheet, under surface preparation, says
> not to apply over epoxy coatings.... like the inside of a Velocity fuel
> tank.  I built my tanks prior to Jeffco becoming the thing to do.  I used 4
> coats of EZpoxy and no problems 7 years of 100 LL later.  I did not check
> EZpoxy with mogas but I did test it with denatured alcohol which is ethyl
> and methyl alcohol plus acetone.  A scrap in a two month soak test showed
> no physical changes in it's properties that I could detect.
>
> Larry Coen
> N136LC
>
>  *From:* Tom Falls <tomfalls6 at gmail.com>
> *Sent:* Sunday, March 18, 2012 8:28 PM
> *To:* 'Velocity Aircraft Owners and Builders list' <reflector at tvbf.org>
> *Subject:* REFLECTOR: Jeffco spec sheet
>
>  Attached is the spec sheet for the coating I received from A/S when I
> ordered “Jeffco” about a year ago.
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