CYCPLUS CUBE

That looks very convenient. Depending on reviews and price, I would be tempted.

On that topic, in the last year or so , I have seen literally hundreds of the small steel compressed air cylinders in the most unexpected places. It irked me that cyclists would just leave them strewn around the country roads and even in town car parks.

I saw the local news last night and apparently they are nitrous oxide (laughing gas) tubes and people use them as a drug and the use is huge in the UK. So the high chance is all these I see are not cyclist compressed air cyclnders.

Most of these small cylinders more likely contain carbon dioxide, not compressed air (remember when you could get "rechargeable" soda syphons that used these?), and they probably are cyclist-derived (although in my experience, most cyclists re environmentally sensitive folks who don't leave such detritus lying around). I had the opportunity to use one of these when I suffered a puncture on a group ride earlier this year, and after changing the inner tube, found that the Presta valve fitting on my frame pump had broken off. Fortunately,one of my companions had a CO2 cylinder that pumped the tyre up in about 2 seconds flat (or rather, no longer flat).

These are really easy to use, but a drawback is that CO2 diffuses out of inner tubes over a period of time. So, while these will get you home, you'll find that the tyre goes flat in a couple of days (and you'll need to reinflate and deflate the tyre a couple of times with your regular pump to flush out the CO2 from the tubes).

Maybe I should try these in soda water. I could do with a good laugh.