Hi
Thanks for the replies. This is the model
I can ride it too easy in 7th, I can pull away and apart from an occasional incline it stays in 7th all the time. When on power assist if I peddle to keep up with max assist I am peddling so fast I am bouncing on my seat which makes me unstable so I end up not bothering or going down to 2nd stage power assist.
The sensor for the peddle assist is on a separate part of the crank shaft and not connected to the chain wheel.
Also does the length of the peddle arm make much difference.
I don;t know the size of the cogs on the 7 speed, but anything lower than 4th is a waste of time. Its a road bike so such low gears are not required. It won't be going up mountains or doing tricks.
The wheel is 20".