Dan Pritchard wrote: > Why vinyl ester resin?
I did some research back when I built my first N56ML tanks, and found that vinylester was specifically designed to be impervious to the"gasohol" of the time, which was up to 20% ethanol. I've seen no evidence to the contrary since then, although I'm sure there are variations of the stuff. I've run over 1000 gallons through my tanks over a several year period with no loss of integrity at all. I have the chunk of N891JF's fuel tank that I cut out for the fuel sending unit soaking in a jar with it, and it's as hard as the day I cut it out, several months ago. I used the same Derakane 411-350 that Aircraft Spruce still sells. It works. The only leak I had in one of my first tanks was at the top of the header tank where I wimped out and just ran the aluminum inlet tube through the wall and floxed it in place. That was asking for trouble. The correct way to have done it was though the tapped aluminum plate and a "proper" fitting, and that would have never happened. I know of no other epoxies that the manufacturer claims to be ethanol fuel proof, although I'm sure somebody will come up with one. As Larry would say, "your mileage may vary"... Mark Langford ML at N56ML.com website at http://www.N56ML.com --------------------------------------------------------
