JohanDiv Posted January 7, 2020 Posted January 7, 2020 I had no idea this is even possible! This guy left his 25g CO2 cartridge in his cubbyhole and it apparently got a little hot in there. Just did a quick Google search and discovered these cartridges hold around 60bar pressure! Not sure how save I feel with two of them under my saddle anymore. They are literally little bommetjies!
Long Wheel Base Posted January 7, 2020 Posted January 7, 2020 Jeez like. Must have gotten seriously hot. Any more info? Where was the car parked and for how long?Wonder what the insurance will say.
IceCreamMan Posted January 7, 2020 Posted January 7, 2020 Eeek. That reminds me, I have some real old ones I used to lug around all over Africa on my motorcycle tours that I should get rid of.
The Ouzo Posted January 7, 2020 Posted January 7, 2020 have you ever measured the heat build up in a car? Its astronomical.Leaving one of those lying round inside a car is crazy, its probably doesnt get even close to those kinds of temps under your saddle. But what surprises me is that it did not let go at what I thought would be the weak point, the cap that you pierce. Leave a full aerosol can in your car and you're looking for the same k@k.
milky4130 Posted January 7, 2020 Posted January 7, 2020 After seeing this I'll also never argue with Airport staff again about insisting on taking my co2 canisters on a plan, doesnt matter which temperatures are expected or where it will be stowed away.
Bellscycling Posted January 7, 2020 Posted January 7, 2020 We left our Topeak tool box in the sun at the Sani2C once after the 1st stage and one of the bombs in the top tray exploded. Looked just like that one and we needed a new toolbox.
etienne_jordaan Posted January 7, 2020 Posted January 7, 2020 Wow...... if that was lying on the dashboard it probably would have taken out the windscreen?
MrJacques Posted January 7, 2020 Posted January 7, 2020 Hectic A bit strange that it ruptured there - the seal where you connect the inflatior should be the weakest point? Maybe a manufacturing defect? Still, good idea not to leave them in hot places.
lechatnoir Posted January 7, 2020 Posted January 7, 2020 well, this is what happens when a scuba tank explodes in your car boot... Edit - correction - that was nitrox... but pressures are similar - 300bar in a scuba tank...
MrJacques Posted January 7, 2020 Posted January 7, 2020 well, this is what happens when a scuba tank explodes in your car boot... Those things can be very dangerous.
Fat Boab Posted January 7, 2020 Posted January 7, 2020 They're well named but the effect of even significant temperature increases of the contents of a CO2 bomb isn't that significant e.g an increase from 20 to 100 degs C will 'only' increase contents' pressure by 28%.Maybe that crosses a design pressure? More likely a defect in the bomb wall?? Still sobering...
Mamil Posted January 7, 2020 Posted January 7, 2020 If that went off under my saddle maybe I'd get the KOM ....
Stretch Posted January 7, 2020 Posted January 7, 2020 Mmmm....my bikes been in a container in a ship for the past 3 weeks....I sure as hell hope I didn't leave one in the saddle bag.... And hopefully.... The ship got up north fast enough that that it was in cooler air temps
Craai Posted January 7, 2020 Posted January 7, 2020 If that went off under my saddle maybe I'd get the KOM .... If it went off under my saddle I will have something in my pants, but it won't be KOM
Long Wheel Base Posted January 7, 2020 Posted January 7, 2020 well, this is what happens when a scuba tank explodes in your car boot... Edit - correction - that was nitrox... but pressures are similar - 300bar in a scuba tank...Nitrous. I am not sure what happened in that specific scenario but I have seen a few times when the shut-off valve doesn't close and either the nitrous leaks into the engine when you don't want it to or the reverse happens and the nitrous catches fire and the fire burns back upstream. That is also a big explosion in both scenarios but with fire.
Long Wheel Base Posted January 7, 2020 Posted January 7, 2020 If it went off under my saddle I will have something in my pants, but it won't be KOMI wonder how loud the bang would be?Many years ago before the days of tubeless I was out riding my MTB. Got a puncture near a garage so changed my tube there. I didn't notice that I actually had a slice in the sidewall. I was busy pumping my tyre with the garage air and hadn't noticed the tube bulging out. Next second there was a massive bang. The poor petrol attendants all dropped and lay on the ground. My toppie and I got such a fright, I honestly thought a bomb had gone off.
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