Yes i wanted to test it without my wife and see. its a bit frustrating to feel like i am working hard but not get my heart rate up. yesterday on my commute home I averaged right around 15mph and 160 watts average but on the tandem right at 15mph average it was only 90 watts. but we tend to get about the same range I get up to 40 miles on my bike and around 35 on the tandem. but I am putting out far more watts on mine. the tandems display is about the same but it shows how many watts per mile the motor is using. when we are in the 18.5 to 19mph range we are only using a few watts per mile as the motor is right at its speed cutoff range. so we are not using as much power when going our normal speed as I am on my regular bike the assist levels are the same but I am going around 22 so you would think the tandem would have more range. but maybe I am putting out ,more watts so the motor is not using as much.