alt Hacker NewsThat’s a crappy pressure vessel holding 350ml of 80psi air, for about 100J of stored energy. I’m not entirely sure I’d be comfortable with that, especially anywhere with my face in the line of fire it it fails.
Replies
It's a soda bottle - it fits in your water bottle holder, and you can replace it for a couple of bucks if it fails. 80 psi is pretty low pressure (typical narrow tires are 100-120) and the bottle itself is very low mass, so the fabric around the bottle should ensure safety if it bursts.
IIRC these came out in the early-mid 90s; a bike messenger trick at the time was to fasten the horn to your handlebars with velcro, so you could take it off and hold it near a car window when triggering it.
> That’s a crappy pressure vessel
That's a huge assumption, and likely incorrect.
Good point, but I abused it pretty well and it seemed to do OK - was also in a water bottle holder so closer to the legs than anything.
Your bike already has two crappy 80psi pressure vessels, why not three?