bladder tank preservation

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ruddersup?
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bladder tank preservation

#1 Post by ruddersup? » Fri Oct 16, 2015 6:25 am

Has anyone come up with a way to prevent bladder fuel tanks from deteriorating during long winter storage without having to keep the fuel tanks full?
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Heliian
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Re: bladder tank preservation

#2 Post by Heliian » Fri Oct 16, 2015 7:04 am

There should be a preservation method and preservative listed with the tank instructions. If there's not then you'll have to come up with a way/product that does it without damaging or contaminating the tank. I have used WD-40 on some bladders and then sealed them.
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SuperchargedRS
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Re: bladder tank preservation

#3 Post by SuperchargedRS » Fri Oct 16, 2015 7:31 am

Don't leave them dry, keep fuel in them, always worked for me.
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ruddersup?
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Re: bladder tank preservation

#4 Post by ruddersup? » Sat Oct 17, 2015 2:06 pm

I understand the theory to keep the tanks full to lessen the deterioration of the bladders but with amphibians such as 180, 185, 206, Beaver too, it's rare that you fill the tanks - no weight left for passengers, so full tanks come spring is not ideal. A tank manufacturer told me to put in a 1/2 ounce of Avblend in the tanks and slosh it around (taxi). Anyone heard of this? Might be an easy solution for a real problem.
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SuperchargedRS
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Re: bladder tank preservation

#5 Post by SuperchargedRS » Sat Oct 17, 2015 9:20 pm

Don't think you need to keep the tanks topped off, I don't let my 185 amphib drop below 10G a side which works.

Knew a DZ with a U206, more or less same deal, they never had problems.
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PilotDAR
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Re: bladder tank preservation

#6 Post by PilotDAR » Sun Oct 18, 2015 7:17 pm

A friend did not store 182 tanks properly while they were out of the wings during a rebuild of the plane. The tanks were sent to Hartwig, who brought them back to life, but just, as I understand. I like the idea of full tanks during storage periods, for several reasons. Among those reasons, the weight of the fuel holds the tank in the desired position and shape.
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