Sinclair A-Bike
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I once owned this thing [1]. It was around 2008, I think. It was the
second, updated model with larger (inflatable to 90 psi) wheels.
If I remember correctly I was very unsatisfied with it - it wasn't as
small as I expected and it was rather uncomfortable when carried in its
dedicated backpack. But as a bike it was quite a disaster. It rode well
only on ideally flat surfaces (like corridors in buildings). And I
wasn't able to climb anything (there are no ideally level surfaces in
the real world). The final problem was that one of plastic parts broke
after a few weeks of use. So I sold it.
I wasn't the only one who was unsatisfied with it. I was told that the
bike was a sort of disaster.
And now I have bought another one. The first model with ever smaller
wheels. And I am rather satisfied with it. It really does not ride any
better that the later model but now I know about its limits and I don't
expect too much.
References:
[1]
gopher://gopherpedia.com/0/A-bike