Lynda,
The three position switch does not control the amount of 'power' available. This was my understanding at first, but this proved to be wrong (kindly confirmed by
NRG).
The three position switch controls the road speed to which the motor assists, something like:
Position one, assistance dies away at around 14 mph.
Position two, assists to around 17 mph.
Position three, approximately 18 mph.
The amount of torque, or pulling power, is exactly the same in all three positions. This is the way the system was designed to work, but as long as the wheel magnet is in place to satisfy our regulations, you will never get to experience how smoothly the assistance works in the way originally intended.
The controller measures the time-lapse between magnet passes of the sensor. When the time lapsed is equal 15 mph, the inhibitor circuit (also used by the brake switches) is activated. This is why the assistance ceases so abruptly.
The only occasion when the full potential of the Tonaro is realised, is when that magnet comes loose and moves away from the sensor (wheel magnets are well known for coming loose)
The motor assistance has a 'soft start', this is sometimes mistaken for a delay after using the brakes, or when pedalling off from a standstill. This will also be noticed after using the throttle.
Delighted to hear you're pleased with the machine.
Regards
Bob