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#31
09-30-2013, 07:09 AM
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I am trying to avoid epoxy when I can. It is a sensitizer, and I have used too much of it already. I can still work with it, but I can see the day when I won't be able to.
Plus polyester doesn't stick to it well, if at all, in case I want to laminate structure in there in the future. Although I suppose in either case I would be abrading away the surface. Strick had mentioned a duratec high gloss gel coat additive- I might try that. I have a gallon of white to use up. 
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#32
10-01-2013, 12:28 AM
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And it holds up fine. Gel coat is cheap. The duratec is a little pricey but you will have a two gallons of material and it goes a long ways. People been using gel coat in bilges forever.....dont know why we have to re invent the wheel all the time.
 Strick
__________________
"I always wanted to piss in the Rhine" (General George Patton upon entering Germany)
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#33
10-01-2013, 05:37 AM
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Quote:
-Me-
__________________
Blue Heron Boat Works Reinventing the wheel, one spoke at a time.
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#35
10-04-2013, 07:56 AM
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new tank support idea
Quote:
Yes, there was no tank deck. Just some strips of rubber under aluminum tanks. For a plastic tank, I would make a support/tank deck. I want to try some of the Santor Loric SF core material I just saw at that composites show. I hope to get the tank deeper in the hull with a deeper V bottom on the tank. And support it with sandwich core off the inner stringers, with a pultruded fiberglass box section to stand it off the keelson, with a pile of 3M 5200 in the joint to allow that joint to flex. The joints from the stringers to the tank deck/support would also flex with 3M 5200, but with less gap. Any flexion needed from stringer to stringer could be accommodated by the narrow sandwich core and longer span and the plastic tank should be fine with any deformation that happened to the hull in that area. I would think.
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#36
11-29-2013, 10:19 AM
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So I ordered a a Moeller FT-5606-R1. A Christmas gift to myself.
I got it sort of local. http://www.oceanlinkinc.com is the 2nd closest place to me that carries it, and the first didn't have a retail store. These people do. I hope I measured correctly. marine liquidators in FLA had one that was close, and might have fit in the aft half of the compartment but it was too close to tell. Hatch cover flex might have compromised a fitting, and that would have been really bad. I have a plan for molding that conforming tank support so that I can let it rest on the stringers and fully support the tank bottom and sides, allowing for some expansion.
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#37
12-07-2013, 09:45 PM
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FT-5606 fuel tank fits. just. I will place the fuel fill aft, with the tank forward, against the aft wall of the cockpit sole. Then move the deck stiffening rib forward 6 ". The tabbing has ruptured on the forward side of the stiffening rib anyways.
The last 2 pics I flipped the tank around from the way I will install it to show how the 2x4 stiffener interferes. My 2x4 deck stiffener had ruptured the tabbing and flexed. I suspect others have the same issue with cloth. I think 2 layers of biax would have been better than one 0/90
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#38
12-07-2013, 09:51 PM
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Ugly notching of the (ruptured) deck stiffening rib, not extended to outer stingers? It is being retired and replaced with a stiffener 6" forward that ties the deck to the outboard stringers. Looking to see if a boatbuildercentral.com stiffening hat channel will do what I need.
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#39
12-08-2013, 09:55 PM
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By the way, Ocean Link in Portsmouth RI was great to deal with and they worked with me on shipping. I think 3 or 4 calls were involved, but I had peace of mind, and the tank showed 2 weeks early.
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#40
02-02-2014, 10:16 PM
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I killed some brain cells and liver cells scrubbing the fuel tank hold with acetone to get rid of something that seemed half organic mildew, half oily. Plus I have scuff sanded some of the forward bulkhead that is at the aft end of the cockpit sole.
Today I cut out that 2x4 deck stiffener. It wasn't well bonded, and half the glass was ruptured. But it is gone now, and boy am I sore from running a belt sander overhead while lying on my back in a fuel tank hold. But it looks better. It was pretty warm today: 44 degrees. And as a plus, the block didn't freeze last month, it seems. It hit about -10F around here for a night or two.
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