fuzzybabybunny Posted October 16, 2016 Share Posted October 16, 2016 What are the pros and cons to a fuel bag that you can just roll up? Obviously one of them is space savings, but might there be any issues I'm not thinking about? Say you land, take the soft tank off, and fill it at a petrol station. Since it's a soft tank, will the fuel squirt out really easily as you're carrying it back to your motor? Does the plastic crease and leak over time? Quote Link to comment Share on other sites More sharing options...
admin (Simon W) Posted October 17, 2016 Share Posted October 17, 2016 I am fairly sure that they are designed as a bladder which is supposed to be inside a supporting tank? SW Quote Link to comment Share on other sites More sharing options...
Dariuszk24 Posted October 17, 2016 Share Posted October 17, 2016 This what I know petrol always pressurise a tank,just enough shake or vibrate petrol tank and you can observ swelling tank, .if theoretically this happen what space you save??? Insted of hard square tank you have huge balloon ? Quote Link to comment Share on other sites More sharing options...
ptwizz Posted October 17, 2016 Share Posted October 17, 2016 A rigid tank should be vented to allow vapour to escape and to allow air to enter as fuel is consumed by the engine. If your tank swells, the vent is blocked. As Simon says, fuel bags are not intended to be used alone. They are part of a fuel cell system, which has a bag inside a rigid structure. In the event of a crash, the bag can deform as the structure collapses, reducing the chance of fuel leakage. Quote Link to comment Share on other sites More sharing options...
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