@Galena All I did really was join some of the eBike forums and ask questions or lurk reading other peoples experiences. Then after some consideration, I decided on a 48v 1000W rear hub motor, which I looked on eBay and Amazon for the best priced eBike conversion kits (that included much of the peripheral bits as well, such as controller, brakes, throttle, etc), and then also a battery that will run the motor kit. The battery is the most costly thing and there are lots of ways of spending a lot of money (branded cells and large Ah will double or treble the cost), but I just went for an 48v 15Ah battery (unbranded cells in a Hailong case), that mounts on the bike frame at the bottle cage bolts (other options are available), which is about the lowest spec I'd recommend for a 1kW motor. I have found it copes surprisingly well and gives me a range of about 40-45 miles with average usage (but give it stick and you'll have it down to 35, or really limit the amount of motor use and stretch it out to 50). The motor is great up climbs, most moderate hills you easily have the capacity to go up with little effort holding about 20mph, I've done some really quite steep climbs (for me) a few 7%-8% ones and it will still easily go up them but a fair bit slower, and a 10% that I do occasionally where I'll have the motor flat out and still have to put a fair bit of effort into pedalling too, but will still make it up this long climb, something that would be impossible for me on leg power alone. I typically do 20/25 miles on a ride out with between 1300ft to 1800ft elevation gain and will average about 17/18mph. Top speed doesn't really interest me too much, I've have done 30mph on the flat, but then I've done 35mph rolling downhill, so what, I've not really fully explored that. for me it's really for the help on climbs and for when I'm knackered, so I end up doing much longer rides, which is most excellent. If you've got any specific questions, I'll try and answer them for you based on my experience, if that would help.
