I have a GreenEdge Blackstar 2, and also used to live in Ladbroke Square, so I know what you mean on both counts!
At 19kg with battery, I doubt that you'll find many lighter bikes; they are heavy by nature. It depends if you need a folder. I haven't found one I like better, although it is a bit pricey these days.
If you can get up Ladbroke Grove on the GreenEdge, you should not have any trouble doing so with any hub-motored bike (although the smaller wheels of the folder do give some gearing advantage), and probably wouldn't need a crank drive. If you are used to a hub, you might find a crank drive a bit strange, at first, anyway.
I haven't been up Ladbroke Grove since getting the bike, but I have done all the hills of Bath, which are worse!
At 19kg with battery, I doubt that you'll find many lighter bikes; they are heavy by nature. It depends if you need a folder. I haven't found one I like better, although it is a bit pricey these days.
If you can get up Ladbroke Grove on the GreenEdge, you should not have any trouble doing so with any hub-motored bike (although the smaller wheels of the folder do give some gearing advantage), and probably wouldn't need a crank drive. If you are used to a hub, you might find a crank drive a bit strange, at first, anyway.
I haven't been up Ladbroke Grove since getting the bike, but I have done all the hills of Bath, which are worse!