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Originally Posted by RogerM
Be interesting to see if these bladders can meet the performance tests required for carrying dangerous goods - look for a little circle with UN inside and some numbers under it to see if has undergone the testing. I doubt any bladder will survive the drop test - which is about 1% of the forces you'd get in 50kph accident, let alone some of the venting/expansion requirements.
There are plenty of bladders around for diesel (which is not a dangerous good) because of its higher flash point (+63C) than petrol (-24C).
The bladders that were being sold by an Aussie company I could never find any details about their approval for use as petrol bladders.
I know the UN approval process all seems to be over the top for just 7litres of petrol, but the performance tests have been developed over the years - mainly after people have sufferd at the hands of putting petrol in containers that were not designed for it.
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I'll make sure I bear that in mind next time I use a zip-lock sandwhich bag to transfer fuel between bikes.
C'mon, reality check please. We are talking about a standby way of adding some short term extra fuel capacity. As said, beats a pop bottle or three.
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