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Russell Duffy wrote:
Example- I restored a 65 Corvette years ago, and had a Holley double pumper carb. I had a T fitting that split the fuel supply to go to both bowls. This fitting happened to be plastic, and worked fine for as long as I owned the car. Eventually, I sold it, and build an AC Cobra replica, also with a Holley double pumper, and the same T fitting. I drove this for a year or so, then one day smelled fuel, and opened the hood to see fuel spraying out of that fitting. The station I always bought gas from had a big sign out front advertising some new wizbang additive, which apparently attacked the plastic. Rest assured that I immediately made a frantic call to the guy who bought my Corvette. Just wanted to give everyone something else to worry about :-)
Rusty
The Delta's tank is plastic. But a few builders have opted to mod in an aluminum tank. It's this consideration that has me seriously considering doing the same. The current resins making up the tanks work just fine, and have for years. Stick with a Lycoming, using only fuel provided at the airport, and you'll continue to do good.
But stop at the wrong station just once*, followed by a hard landing, and there's a possibility that your passenger will get a dousing in whiz-bang additive enhanced gasoline**.
Again this is only a concern for planes with plastic tanks AND planning to run auto fuel, but the combination is deadly and really does cause me much concern.
*The Delta is towable on its own wheel. No reason not to stop for a fill-up on the way to the airport. At 40 odd gallons, saving $1/gal is real paper money.
**The fuel tank is locate just behind the passengers heads. A broken seam and. . .
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