Having cycled for over 70 years, but now suffering from chronic lung problems, I was anxious to find a way to carry on using a bike, especially in windy weather. The Swytch kit fits the bill and, fitted to a Ridgeback Avenida with a 3 speed hub gear, makes for an enjoyable ride. The fit looks a a bit "Heath Robinson" but that is inevitable when looking for a solution to retro fit so many types of bike. The only down side is that the lights on the controller have already stopped working, although the on switch and motor still function. i had already found the switch a bit "spongy" and slow to react. I'm hoping that after service is not as bad as many of the online comments suggest! Disappointing that this fault has developed to mar an otherwise positive experience.