So, I just had my first problem with foss tubes.
A few nights ago I was woken by a sudden “wham” sound and hissing noise. The 36" foss tube had suddenly blown.
At first I thought it was the valve, because the that’s where the air was coming out from. But taking it apart I found this:
The extra layer of the rimtape ends have created a tension point. I really like the foss tubes; they may be puncture resistant, but they are not durable, it seems.
Today I fitted a 29" rubber tube on my 36’er; and a pain it was! But it rides well. I got 24 km/t on a short stretch, so it’s not holding me back. I’m looking forward to see how it holds up, as it only weights a little more than my foss tube.