My swytchbike tourer works really well a d I'm enjoying riding it. I've only given 4 stars, however, because my Brompton kit gives intermittent judder on the front wheel. I've tried swapping controllers, disconnected the hall sensor, checked that the pedal sensor disc is set up correctly, all to no avail. To get smooth operation, I have to, momentarily stop pedalling, then slowly start pedalling, sometimes several times, then it's smooth again. I suspect it's a motor problem, as the controller works perfectly on my tourer. Another possibility is the mount, but I've cleaned and checked the connectors, which seem ok