I've been interested in e-bikes off and on for years,off and on because just a few years ago battery tech was mostly lead acid and there still wasn't a lot of info for better (lighter)chemistries around yet. Enter Endless Sphere and an explosion of knowledge,eagerly shared by everyone. The point is,it took me a LONG time to finally realize my e-bike and I must say I really Love this thing. It's a simple machine ,I bought the 200.00 geared motor kit from e-bike kit advertised a while ago (Outstanding kit),got some Makita packs (for Konions)from Dr Bass (great guy excellent cells),From which I built my own pack - 48v-15ah 10p 14s - 58 hot off charger-charged with a meanwell ,this pack turned out really great. I think the best decision I made was to spend some money and get a decent bike,it's a Raleigh mountain/comfort hybrid with a front suspension,this is what makes the ride a pleasure. This baby sticks to the road and corners like a dream,it's responsive comfortable and stops on a dime even at 30-35mph. The top speed on the flat is 22mph and at that speed i feel like i'm flying. There's only one thing that feels better than silently speeding down the an empty road on a warm summer night. My bike takes most hills with ease and even on the steepest a few well placed pedals will take you right up.Rarely any heat motor or controller,iv'e gone 24 miles on a charge and the pack has never been below 55volts. I went for stealth with my build and i'm proud to say that nobody ever guesses that my bike is an ev.,and they are always surprised when i tell them,they ask where the motor is and then "can you charge while riding?" There's also the added bonus of "Stickin it to the Man",my daughter told me that her and her sisters recently came to the conclusion that ,Dad hates the man ha ha. For the first time yesterday I rode my bike to my job 9 miles away and i don't think I ever enjoyed my commute so much,I made it in 26 minutes vs 35-40 mins in a car not to mention gas savings. All of these thing gives me great pleasure especially when i don't have to drag that extra 2000 pounds around.