Way to be thorough Wendell! I encourage the mason jar test too, just to make sure.

 

-al wick

I did put a cured sample into a jar of de-natured alcohol for a few weeks and no softness, I don't know how that would compare to fuel with alcohol but couldn't find any gasahol to expirement with.  Anyone care to guess as to comparison of results?

 

Wendell

 

On Fri, 20 Jan 2006 11:21:40 -0600 "Wendell Voto" <jwvoto@itlnet.net> writes:

I'm building with epoxy and was using West Systems because the boat people recommend it for fuel tanks. Out of curiosity, I e-mailed West Systems questioning the use of their epoxy with fuel with alcohol.  They did not e-mail back but quickly phoned to tell me that it would not hold up to alcohol and suggested using Pro-Set 145 resin with Pro-Set 226 hardener. I used this as a coating on the Cozy tanks and also to bond the top skins onto the tanks.

 

Wendell

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

From: William

To: Rotary motors in aircraft

Sent: Wednesday, January 18, 2006 10:29 AM

Subject: [FlyRotary] Re: Auto fuel

Al,

Your statement below could lead some to think that by adding more hardner to an epoxy mix that you could make it more resistant to fuel. I don't think that is what you meant, you might want to clarify it *and* provide the name/model of the epoxy that you tested.

 

Bill Schertz
KIS Cruiser # 4045

 

 

-al wick
Artificial intelligence in cockpit, Cozy IV powered by stock Subaru 2.5
N9032U 200+ hours on engine/airframe from Portland, Oregon
Prop construct, Subaru install, Risk assessment, Glass panel design info:
http://www.maddyhome.com/canardpages/pages/alwick/index.html