The reference was for slosh compound from KBS Coatings. Based on that recommendation, I am using it in the glass tanks in my SuperCub Clone. We'll see how it does. My KR has the Bill Hirsch compound in it. Still good after 22 years and 1200+ hours with no flaking or peeling.
I had a discussion this weekend with an RV builder that had sloshed his tanks just prior to the RV "Service Bulletin" reversing their recommendation and saying not to slosh the tanks. He said that after 10 years use, he removed the tanks and went in and scraped all the slosh compound out of the tanks. Per his experience, he said it stuck really well at the seams where it had something to bite into, but peeled quite easily where it was covering slick smooth surfaced, i.e. flat aluminum. I would conclude that if your tanks have some texture to them, the compound is likely to stick much better. Additionally, acid etching opens the surface a bit and will help the slosh compound to stick better, including in fiberglass tanks. That is per the recommendation from KBS Coatings.
<https://www.kbs-coatings.com/>
-Jeff Scott
Cherokee Village, AR
Sent: Monday, November 05, 2018 at 2:08 PM
From: "svd via KRnet" <krnet@list.krnet.org>
To: "krnet@list.krnet.org" <krnet@list.krnet.org>
Cc: svd <osprey...@yahoo.com>
Subject: KR> Tank sloshing
From: "svd via KRnet" <krnet@list.krnet.org>
To: "krnet@list.krnet.org" <krnet@list.krnet.org>
Cc: svd <osprey...@yahoo.com>
Subject: KR> Tank sloshing
Ha ha ha. Great stories and yes, an aluminum tank is very much the way to go. Sadly the project Im working on has fiberglass wing tanks and I’d like to get her done and flying. Cutting out and replacing the wing tanks would be a massive time sink.
Im looking for tank sloshing recommendations (product, procedure, tips). I know the RV folks had a serious issues with tank sloshing material pealing and clogging fuel intake.
I am hoping there is better adhesion to fiberglass than aluminum, and perhaps a sealant product that won’t peal. The tanks I want to seal haven’t had fuel in them yet, perhaps that will help.
There was mention of a sealant product a few months ago - I think during the mogass blues thread. I thought it would be easy to find it in the archives, but I havent found it yet.
I can also imagine that no, there is no such thing as a sealant that won’t peel, that sealants are half assed and its just not the right thing to do.
Any experience with tank sealants?
RHINO FUEL TANK SEALER:
https://www.aircraftspruce.com/catalog/appages/jeffcotank.php?clickkey=11739 <https://www.aircraftspruce.com/catalog/appages/jeffcotank.php?clickkey=11739>
Bill Hirsch Sealer:
https://www.aircraftspruce.com/catalog/appages/gastanksealer.php?recfer=13793 <https://www.aircraftspruce.com/catalog/appages/gastanksealer.php?recfer=13793>
BUNA-N-SLOSH COATING:
https://www.aircraftspruce.com/catalog/appages/bunan.php?recfer=20373 <https://www.aircraftspruce.com/catalog/appages/bunan.php?recfer=20373>
I am guess I will and pour it in as I rock/rotate the wing - maybe even pressurize the tank to push the resin into any pin holes.
Cheers,
Owen
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