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gas engine , fuel proofing tank area

Old 03-19-2012, 04:09 PM
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WhiteRook
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Default gas engine , fuel proofing tank area

is epoxy the thing to use when fuel proofing the tank area on a gas airplane?
Old 03-19-2012, 05:46 PM
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a1pcfixer
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Default RE: gas engine , fuel proofing tank area

Thinned out with a tiny bit of rubbing alcohol, yes.
Old 03-20-2012, 04:29 AM
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STUKA BARRY
 
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Default RE: gas engine , fuel proofing tank area

Just spray it with rustoleum primer and be done with it.
Old 03-20-2012, 07:14 AM
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Zeeb
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Default RE: gas engine , fuel proofing tank area

ORIGINAL: a1pcfixer

Thinned out with a tiny bit of rubbing alcohol, yes.
I like to use the thinned epoxy myself but had problems with it drying when using rubbing alcohol.

Rubbing alcohol contains 30% water, Isopropyl alcohol contains 9% water.

Denatured alcohol available from most any hardware store contains no water and I've had better luck using the denatured alcohol for thinning epoxy. IMHO it's a well spent effort because all it takes is one inadvertent leak in the fuel system and you've got a mess with the oil in the fuel soaking the wood. Some rear carb engines will spit fuel back through the hole in the firewall (on some models) so it's worthwhile from that aspect. I've also started coating the inside of the cowls on the bottom since most carbs will drip some in the process of choking the engine and having that epoxy coating in there makes clean up a snap and it doesn't get into the fiber glass fibers.
Old 03-20-2012, 04:17 PM
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WhiteRook
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Default RE: gas engine , fuel proofing tank area

yea zeeb , i been thinning it with denatured alk , works well,but i thought gas might eat through it. rustolium sounds like a good
alternative . i guess epoxy is the best for gas and glow

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