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Old 29 August 2009, 04:46   #31
mdt
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My 2 pence's worth .............

Wrong place - you will have a heavy bow when full, then getting lighter as you use fuel - Always place fuel tanks as near to the centre of gravity as possible, they are useful for trying out changing the balance of a boat though!.
so you recon would be better to build it in below the seats then?


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We only fit GRP tanks to diesel boats - our suppliers will not approve any material for making fuel tanks for petrol, and as our boats have to be CE marked we could not fit them, there are also other rules that don't apply here.
good job I am not going for CE ticket then eh there is lots of old yank boats with glassfiber tanks they only suffer now due to the "new" fuel additives




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Hope that helps!
eh no, more a spanner into my cunning plan....
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Old 29 August 2009, 05:23   #32
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so you recon would be better to build it in below the seats then?


good job I am not going for CE ticket then eh there is lots of old yank boats with glassfiber tanks they only suffer now due to the "new" fuel additives




eh no, more a spanner into my cunning plan....
Yes

If you want a future proof fuel tank I don't believe fibreglass is the way to go!

Sorry!
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When a boat looks that good who needs tubes!!!
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Old 29 August 2009, 05:46   #33
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Wherever it fits!

The idea would be to keep it as low as possible as well, so to get the volume and keep it low fitting it lengthways with baffles would be the best solution so long as it is positioned around the C of G.
What about a long tank with no baffles ? Just need to tap into your experience mate.

MDT, sorry about the hijack.
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Old 29 August 2009, 10:21   #34
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What about the free surface effect on your stability when the tank becomes slack?
The tank wont be very deep but it will have a significant free surface area when slack unless it is baffled effectively both longitudinally & athwartships.
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Old 01 September 2009, 08:48   #35
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What about a long tank with no baffles ? Just need to tap into your experience mate.

MDT, sorry about the hijack.
They need baffles, especially if it's a long tank!
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Old 01 September 2009, 08:53   #36
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They need baffles, especially if it's a long tank!
You'd think for the price they sell plastimo and tek tanks for they would have baffles wouldn't you! And with only a small deck plate for access, adding them later is impossible.
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Old 04 September 2009, 17:34   #37
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well the boys at CFS say that vinylester resin is resist chemical attack, and shall be fine for a fuel tank.

so looks like I will bash on and build a tank under the deck, just a bit more towards the middel and see how it goes.
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Old 04 September 2009, 17:39   #38
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well the boys at CFS say that vinylester resin is resist chemical attack, and shall be fine for a fuel tank.

so looks like I will bash on and build a tank under the deck, just a bit more towards the middel and see how it goes.
Niceone, keep us updated
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