Ambrose, I usually keep my ride around 10-12 miles and stay pretty close to home on flat concrete pavement. As you probably know, the sla batteries dont last long. I estimate only between 7-9 miles each battery. . Last year, I rode the bike to my work and didnt make it with both batteries (20 miles). As you know, pedalling this thing its a beast. My goal would be to get 15 more miles of power. I did consider to buy another currie battery and strap it to the carrier someway and if I run down, do a swap from the carriers and keep going. I charge the battery after each day, not ride. Lastly, because im looking for more that one extra battery mileage may allow, thats why I was thinking of a front hub motor. I understand the cost difference ($129 from currie vs buying a 26" front hub ekit which is ..???) and speed isnt really a concern. I like the low speed. I probably have like 1000 miles on this thing. Thanks...Tom