"Dave Platt" wrote in message
...
In article ,
Jon Elson wrote:

I have seen a fat spark produced when firing off a CO2 fire extinguisher,
which seemed like a pretty big design defect.

The one I fished out of a skip is now fitted with a tyre adaptor and used
for blowing tubeless tyre onto the rim.

You have to hold it upside down - if the syphon tube puts liquid CO2 into
the tyre, the rim starts creaking ominously.