scotty Posted January 8, 2020 Posted January 8, 2020 Topped up sealant, pumped tyres , washed bike and left in sun to dry, go inside and while later I thought a bomb had gone off, mine and neighborhood dogs went ballistic. Spent next few hours removing sticky sealant from bike and paving.
solty Posted January 8, 2020 Posted January 8, 2020 the small 12/16 and 25 g ones ? obviously the bigger ones would be crazy regulated , but the smaller ones im doubtfulSelf inflating life jackets use similar, if not same, ones.
IceCreamMan Posted January 8, 2020 Posted January 8, 2020 Self inflating life jackets use similar, if not same, ones. Yip, aeroplanes are full of the things
The Ouzo Posted January 8, 2020 Posted January 8, 2020 Okay then I'm fairly certain they'd be regulated, so maybe bad luck since that little cap at the top must be thinner than the wall of the thing, no?my uneducated guess would that the aircraft grade ones are manufactured under tighter controls
Jehosefat Posted January 8, 2020 Posted January 8, 2020 5.1 bar = 75psi roughly What is your issue? Is the thought of liquid co2 so terrifying? His point is that you seem to be reading the graphs incorrectly. At 32c the pressure has to be above 74 bar (1023psi) for CO2 to be liquid. At 5.1 bar the temperature has to be less than -56c for the CO2 to be liquid. So there will never be liquid CO2 in your tyres ever. Although there is very likely to be some liquid in the CO2 bombs.
Mokgaga Posted January 8, 2020 Posted January 8, 2020 sjoe, that is flipping. they are called bombs for a reason
Fat Boab Posted January 8, 2020 Posted January 8, 2020 Just trying to offer a view of thermodynamics is all. 5.1 bar = 75psi roughly What is your issue? Is the thought of liquid co2 so terrifying?
Fat Boab Posted January 8, 2020 Posted January 8, 2020 Pretty much! Although some basic ideal gas law calcs suggests bombs contain only compressed gas. His point is that you seem to be reading the graphs incorrectly. At 32c the pressure has to be above 74 bar (1023psi) for CO2 to be liquid. At 5.1 bar the temperature has to be less than -56c for the CO2 to be liquid. So there will never be liquid CO2 in your tyres ever. Although there is very likely to be some liquid in the CO2 bombs.
Brakepad Posted January 8, 2020 Posted January 8, 2020 A couple of months ago I was pumping up my my tubeless tire in my garage. I'm pretty certain I wasn't pumping to any higher a pressure than normal, so think maybe it wasn't seated correctly, but... The bang when it unseated itself completely was pretty terrifying, and the amount of sealant spread all over the garage... Please make sure you use blue sealant then the kids can at least play with a smurf afterwards
DieselnDust Posted January 8, 2020 Posted January 8, 2020 The end cap is under tension and its steel. The hoop stress is always going to be the limiting stress in a thin walled cylinder such as these
Alistair Cookie Posted January 8, 2020 Posted January 8, 2020 So am I the only one wondering if the contents of the Spar Tops bag had anything to do with it?
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