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Discussion Starter #1
Anyone fabricated a "dummy" petrol tank for their race bike?
I have seen examples of small metal tanks with a dummy fibreglass "cover" the shape of the std tank over that. I have seen a few examples on the web here and there but not much explanation or info to go along with it...
 

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Catalyst composites makes nice fiberglass tank shells, then u just need to TIG up a tank with probably two ports one for the return line, external fuel pump/filter/regulator and done deal. Works great for drag racing, seems like for circuits you would want a fiberglass/carbon fiber or aluminum full tank with foam instead of just the shell. That way u save weight and don't lose fuel capacity, and u can keep the stock pump.
 

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Bearded Viking Admin...
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Kinda pointless. You aren't going to save a whole lot of weight except in your wallet and if it's for the SRAD, you're better off putting that money towards a newer, more competitive bike. I had a 600 SRAD race bike with full Öhlins suspension and a 750 engine - I upgraded to a K7 600 and even bone stock I cut my lap times by a couple of seconds over the SRAD immediately.

What does make sense is a fiberglass shell that goes over the stock tank to protect it in a crash along with safety foam in the tank itself.
 

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Discussion Starter #4
txs SVS, valuable info.... good idea about the tank cover! can you please explain the safety foam in tank? I'm new to road racing(from mx background)
 

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The safety foam keeps the fuel from sloshing around in the tank.
 

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Discussion Starter #6
txs Anthony, I had that idea, thought the foam was in some way adding to "safety"...
So its more for handling...
 

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Mesonychoteuthis hamitoni
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No. Sloshing around is also safety. Also keeps it from gushing out of any tiny little hole from a crash. I've looked at some race series rules (I don't even recall if MX/Enduro/SM/Road race/etc) that required safety foam so all the gas can't dump out in a rupture. The foam slowly releases fuel like water dripping from a sponge, so the engine gets what it needs but it will not dump out even if the cap is ripped off and the tank turned upside down.
 
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