I’ve done a fair bit of research into getting an electric bike.
I realised that the only viable and reliable solution is to build one with standard motor and controller and home made battery.
If purchased from UK or Europe - prices are prohibitive and easily go beyond £300-500 for the very basic heavy 24V kit.
If purchased from China - postage costs for motor alone are about 100$ which makes it not viable as well.
I’ve found this motor company that seems to be the cheapest so far:
I’m particularly planning to use the cheapest option for test:
250W rear hub motor - 60$ per motor + controller and bits - 21$
We could contact this company and ask combined postage for say 5 of us.
If postage combined and is in the range of 100$ the final price per set delivered would be about 60£.
In terms of battery I was looking at the battery power management:
http://www.ebay.co.uk/itm/321108395524 - £28
65 of these 18650 ultrafire batteries :
www.ebay.co.uk/itm/261456294997 - £45 I assume we will be able to agree discount if buy in bulk
From technical spec I would expect 2Ah off these batteries that would still make 5p 13S = 10Ah * 48V battery, so it would make all bike conversion kit being in the range of £130-£150 + tinkering instead of £300+ lead acid rubbish.
Please don’t hesitate to correct me if I’m wrong.