The tank in my 38 had similar pitting and a small leak. It was sitting on a plywood platform aft of the engine and transmission (and pretty much over the stuffing box).
When I replaced the tank, I put (5) 4"x4"x1/4" pads made from neoprene seal bought at my local Lowes. The tank is held in place by two wooden battens over the top of the tank in an athwartship orientation. The battens are held down by stainless rods attached to the support platform with washers and wing nuts on top of the battens to tension the tank down on the rubber pads. I suspect the idea of battens glassed in under that tank would work - after all the idea is to allow air circulation so you don't get corrosion - so long as you can keep the tank from shifting around as the boat moves. Rick Brass From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Nauset Beach via CnC-List Sent: Friday, September 14, 2018 12:10 PM To: cnc-list@cnc-list.com Cc: Nauset Beach <nausetbe...@optonline.net> Subject: Stus-List Fuel Tank Support and Tie Down / Straps A few weeks ago I discovered a diesel leak from the bottom of the tank - the tank had 2 areas of pitting and one was sufficiently deep to start leaking and warrant replacing the tank. I now have the new AL tank and have a couple of questions about installing it: The old tank was not strapped down and was resting directly on the ends of 2 stringers and the hull, surrounded on the sides [fairly tightly] by plywood. This allowed the tank to shift slightly, more or less in place, which wore on the two end points of the stringers, and that is where corrosion developed and the leak occurred. A while back someone (Rick Brass (?) who is probably a little busy with Florence at the moment) recommended glassing in old battens under the tank to reduce the opportunity for moisture to collect and corrosion to occur. Last week Joe mentioned he used Dri-Dek. Is there a consensus on how to best support a fuel tank? The constant shifting of the tank was a contributing factor for the leak. How do people tie down / strap AL diesel tanks? There is not much that looks overly solid to which I can screw in hold downs, like those that come with this from Defender: https://www.defender.com/product3.jsp?name=scepter-expandable-tank-hold-down -kit <https://www.defender.com/product3.jsp?name=scepter-expandable-tank-hold-dow n-kit&path=-1|311|2349059|2349070&id=4201879> &path=-1|311|2349059|2349070&id=4201879 And what to people use for straps? Would this Sceptre product be an acceptable way to restrain the tank? Any suggestions? TIA, Brian
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