Thanks to ALL. But thanks also Scott. I have flown many a Cherokee and never knew their wingtip tanks were Polyester. I simply asked because the Vinylester seems to be very caustic stuff, I knew epoxy wouldn't work with alcohol and thought polyester seemed to be a middle ground. plus my THOUGHT was polyester would be lighter over epoxy. Epoxy is so dam heavy if you don't do it right.
Thanks. Fred Johnson Reno, NV Scott wrote: Wow! That's a lot of exclaimation points and question marks. The question posed seemed to be simple enough. Later, a second question was posed about the tolerance of Polyester tanks to Alcohol fuels. My answer was that I don't know. Piper didn't test alcohol in their tanks as Alcohol contaminated fuels are not recommended (or allowed) by either Piper or the FAA. Consequently, I have no knowledge of specific long term testing data. I've only heard third and fourth hand anecdotal information on the internet, which I don't consider to be particularly reliable data. Would I really want to take the same chances with my tanks as a Piper Cherokee? Simple answer. "Yes." However, I would not use alcohol contaminated fuels in my aircraft, whether the tanks were up to it or not.
