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Old 28 January 2005, 15:03   #1
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Fiberglass Petrol Tanks

Anyone know anything about using fiberglass fuel tanks? I know pro sport use them. Any one know what resin etc must be used? Anyone got any experiance of one that is say five years old and has it lasted?
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Old 28 January 2005, 15:11   #2
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Dunno about the technical stuff but I think Jeff (jwalker) has posted details in the past so worth a search!

Blue Ice's fuel tank is GRP (afaik all Scorps are) and is still going strong (fingers crossed) 8 years later.

HTH
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Old 29 January 2005, 08:39   #3
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VECTOR marine used to use them in all of their XR24 boats that they sold in spain & gibralter without any problems to my knowledge ,try talking to scot bader the grp people for technical help . regards paul
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Old 30 January 2005, 05:23   #4
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Just an account of an experience we had a while back...

We had twin 1000 Litre tanks incorporated into the hull of a 10 metre twin diesel offshore RIB a good few years back.

We had one major problem mixing fibre glass and fuel !

Large tanks such as this obviously required internal baffles to prevent a half tonne of diesel sloshing around ( not great for directional stability!)

The only problem was that the baffles were also glassed into the inside of the tank. With heavy use a baffle sheared slightly away from its mount and the two broken ends began cheese grating very fine fibres into the fuel which invisibly clogged the Racor filter for that tank and engine.

All we knew was that the affected engine would run fine for an hour before chugging to a halt when the fuel filter was clogged invisibly as the very fine fibres were almost invisible when soaked in fuel... It took us a very frustrating week to finally figure out what was happening !!!

Probably an unusual problem as only larger tanks would require baffles ! I suppose the only point worth noting is to be careful with any fittings in the tank such as sender units etc. which could work loose and cause the cheese grater effect.
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Old 30 January 2005, 06:18   #5
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You need to use Neo Pentyl Glycol,
there is a thread on this found here:

http://rib.net/forum/showthread.php?...cule#post34286

and here:

Fiberglass Fuel Tanks

Nick.
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Old 30 January 2005, 07:12   #6
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Quote:
Originally Posted by Louise
Blue Ice's fuel tank is GRP (afaik all Scorps are)
Not correct ....
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Old 30 January 2005, 07:37   #7
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Quote:
Originally Posted by Powerboat
Just an account of an experience we had a while back...
With heavy use a baffle sheared slightly away from its mount and the two broken ends began cheese grating very fine fibres into the fuel ...
Get them built right in the first pace, eh?

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Old 30 January 2005, 10:01   #8
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http://www.envirotank.com.au/index.htm

These people make underground petrol storage tanks - from fibreglass!!!

They claim to have supplied 300,000 worldwide without any problems.

Biggest they do is 110,000 litres - bit too big for a RIB!!!!
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Old 30 January 2005, 11:50   #9
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Quote:
Originally Posted by ct01
Not correct ....
Ooh sorry! The first part was correct though, and I did say afaik about the second part!
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Old 01 February 2005, 19:33   #10
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How would you go about building a GRP fuel tank? Would you do it in two halves and then stick it together? If so, how?

I've just realised the plastic fuel tank I was going to buy will not fit in the size of console that will go in my new hull

Tim
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