Fuel tank question.

Author	Message
Stevezx7r	Stevezx7r posted 10 Years Ago HOT Topic Details
Group: Forum Members Posts: 6, Visits: 52	Hi all, I've been having a look on the site at the various kits etc but before I get any further I have a quick question. I'm thinking of making a petrol tank for my bike - what would I need to do for this? I'm assuming I'll need some sort of iner tank or can fuel mix with carbon safely? Has anyone else gone this route before? Thanks in advance!
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Rich (Staff)	Rich (Staff) posted 10 Years Ago HOT Post Details
Group: Administrators Posts: 167, Visits: 4.6K	Hi Steve, to quote Warren at Easy Composites Most epoxies have a good chemical resistance to petrol. The problem is the ethanol within the petrol that slowly softens and degrades the resins. This is especially the case with some bikes using composite tanks as the ethanol content has increased significantly in recent years meaning tanks that were fine are now causing problems on the bikes. You need an ethanol resistant tank liner to use on your tank so it can be used with modern fuels. You need to look at specific tank lining phenolnovolac epoxies which are expensive and rare. The only one I’ve hear mentionedis GTS 1750 Tank Sealer which cropped up on the forum once.
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Stevezx7r	Stevezx7r posted 10 Years Ago HOT Post Details
Group: Forum Members Posts: 6, Visits: 52	Hmm, could be a PITA to source. Maybe a small Ali inner tank with a carbon dummy tank around that....Loose out on capacity though.
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Fuel tank question.

Stevezx7r - 10 Years Ago

You need a special coating on the inside to be able to handle the fuels.

Hanaldo - 10 Years Ago

Any idea what this coating is called? I suppose it'll have to be ethanol proof due to the amount...

Stevezx7r - 10 Years Ago

Hi Steve, to quote Warren at Easy Composites [quote] Most epoxies have a good chemical resistance...

Rich (Staff) - 10 Years Ago

Hmm, could be a PITA to source. Maybe a small Ali inner tank with a carbon dummy tank around...

Stevezx7r - 10 Years Ago

Ethanol is the culprit,you can seal it with after you made the tank,using peel ply will give you a...

Shaneer22 - 10 Years Ago

You are in Europe, so the stuff you need is definitely available. Not sure what sort of quantities...

Hanaldo - 10 Years Ago

Can I ask why you want to build a tank from CF, is it for looks or to lighten the bike. Its only...

VVS - 10 Years Ago

[quote][b]VVS (12/09/2015)[/b][hr]Can I ask why you want to build a tank from CF, is it for looks...

Hanaldo - 10 Years Ago

Kreem fuel tank liner is what myself and people I know use to coat our steel tanks. Just pour it in...

kidpaint - 10 Years Ago

I would have thought a carbon tank would be stronger than the plastic one it has at the minute.

Stevezx7r - 10 Years Ago

Strength can mean multiple things. Carbon is actually quite brittle, and failure is complete. So...

Hanaldo - 10 Years Ago

I've seen (never used) rubber bladders for motorcycles. That might be an option if the...

speed_demon - 10 Years Ago

I made a carbon tank for one of our race bikes and managed to get the weight down to 550 grams...

carbonfibreworks - 10 Years Ago

https://www.aircraftspruce.ca/pages/cs/fueltanksealants/ps890.php > look in t Q&A section also...

20_rc51_00 - 10 Years Ago

I use a phenol novolac sealer which is from a UK based company and is apparently a higher Phenol...

morepower - 10 Years Ago