fiberglass gas tank ?

Con: if you do go down, fiberglass doesn't dent like steel or aluminum, it cracks. Which can mean spilling gas, which can mean being SOL

Thaw the only thing keeping me from buying/ making one myself.

bob.
 
Pros: lighter thank a comparable metal tank, if your making your own you can make it exactly the shape you want.


Cons: Like Bob said, fiberglass or carbon fiber don't like to bend, however, if you're making you're own you can put a layer or two of kevlar in the mix. Also, there are some concerns about fuel eating away at the resin, but it can be alleviated by using certain resins and also sealing the tank.
 
epoxy resin instead of polyester does away with the fuel doing damage, most aluminium tanks are lighter than grp ones hower. also as stated above you can add kevlar to the impact areas on the tank.

however if you look at the prices of epoxy resin and kevlar it all starts to get as expensive to make one as it is to buy a metal tank. :(
 
We used glass tanks for years back in teh day, but a badly made tank will come apart. Well made tanks are a blast because you can pretty much make it whatever shape you want.

Biggest CON is ethanol leeching the resin out which causes all sorts of problems like bent valves etc.

Line it with Caswell tank liner and you should be good to go. Air-tech are selling tanks as are others but they won't sell them for the street in case they get sued. BTW I have crashed bikes on the street and track with glass tanks and yes they can get damaged, but so far I have been lucky.

Besides, if you make a mold, you can always pull another tank to replace a damaged one.
 
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