That’s a very handy summary, confirmed here by those who know. Thanks![snip]
So essentially all you need to do to become 'legal' is have pedals, configure controller to 4mph max throttle assist, restrict top assistance speed to 15.5mph and have a hub that was 'rated' by the 'factory' stating it's 250W...?
Nuts..
Just for clarity, I also believe that it’s perfectly legal to have a throttle delivering max power above 4mph, provided the pedals are turning. After all, in this respect a throttle is no different to using the PAS buttons, or pushing harder on a torque sensor for that matter. I hope that’s true!
In which case, my own e-bike therefore complies with UK law. It’s a RadRunner-Plus with hub-motor, EU/UK spec with a 250w compliance sticker from the manufacturer. I have also fitted an EggRider that can be configured in any number of either legal or illegal ways, including what is called ‘Rad mode’ which mimics the rather well-considered power characteristics of the standard Rad bike, including throttle cut-off at 4mph but with full throttle available above that speed while the pedals are turning. I have power capped at 19A (912w) so I am not short of hill-climbing torque but speed is also limited to the legal max of 15.5mph. That’s more than enough for the footpaths and cycleways I share with other bikes, pedestrians and prams and dogs.
In practice, this is a very good set-up for me, and I suspect many others. I have all the power and speed I need, plus a throttle that is, in effect, pretty much available full-time. It is very easy to use the throttle for a safe and elegant launch (and it’s perfect for slow-speed manoeuvring) and then to be underway and on the pedals before the 4mph cut-off.
BTW, it is not possible to make any changes to the EggRider ‘on the fly’ (in order to comply with the law if you’re stopped). That can only be done by hooking up to the BlueTooth app and diving in to the menus.