JB Weld: IT IS NOT ETHANOL PROOF. The ethanol melts it. I had the issue when I used it to seal some "pin hole leaks" in an aluminum tank. Worked for a while and then leaked. I called the company the makes it and the nice lady I talked to said it was good to use with everything EXCEPT ETHANOL..
I had used it on what was "ethanol free gas". Apparently it had some "minor amount" of ethanol in it. So, don't use it around anything that can even splash it on the JB.. Ron On Sun, Oct 30, 2022 at 10:19 PM Jeff Scott via KRnet <krnet@list.krnet.org> wrote: > JB Weld is simply an epoxy product with loaded with some fillers to give > it a more viscous wet consistency and a relatively hard finish. I wouldn't > use it anywhere you wouldn't consider using any other epoxy resins. If you > prep an aluminum (or composite) surface for bonding, you'll find JB Weld, > as well as most other epoxies such as West or T-88, will work well to stop > a pinhole leak. > > If you want to read some read fuel tank horror stories and how I rebuilt > them, I suggest reading a a couple of pages on my web site < > http://jeffsplanes.com>. > > Under the SuperCub files. There is a page labeled "Mogas vs Composite > Tanks". Lots of good info there about additional chemicals added to mogas > that literally melted the composite fuel tanks in my SuperCub clone. > Additionally, I have a number of photos and descriptions as I cleaned up > the ruined tanks and quite literally built new tanks inside the old tanks. > > Under the RV-6 files, about half way down page 5 labeled "Flight Prep and > Test Flying" you'll see the process I used to overhaul a leaky aluminum > tank on my RV-6. I currently have the other tank out for overhaul and am > using the exact same process. > > -Jeff Scott > Arkansas Ozarks > > -- > Sent from my Android phone with GMX Mail. Please excuse my brevity. > -- > KRnet mailing list > KRnet@list.krnet.org > https://list.krnet.org/mailman/listinfo/krnet >
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