I would not to quick in going to a metal tank. There would be a weight penalty.
I've replace two tanks on two different aircraft this last year. It's not
a hard job if you follow Bub's instructions to the letter. Here is the States
the hard part was paying the shipping from England. I checked around for a
metal
tank and they wants twice what the Europa manufactured tank was going to
cost plus shipping. The new tank is about 0.5 gallons larger. If you follow
Bud's replacement instruction then the tank is floating in the frame and is
wedged in place instead of fiber-glassed.
One thing I did was to enlarge the two inspection holes on the bottom of the
fuselage.
With my big hands it was a great help. I used three layers of bid across
both holes. Then cut out a five half inch circle.
Have fun! I hope you don't have a lot of upholstery around the seat back!
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