The fact that you persist in referring to ebike and e-mountain bike shows that that you, like almost all in this forum, simply do not understand the relevant legality or its purpose. Here once again for the umpteenth time is the correct position:When you go in a bike shop and a pisspoor 20" wheeled ebike with a 140Wh battery is called 250W and £10k state of the art e-mountain bike with 110Nm of torque is also 250W you know the certification process is utterly incompetent or corrupt.
1) All e-bikes are motor vehicles which have to be type approved and registered in the UK.
2) Our compliant EAPCs are never e-bikes and should never be called that, they are simply assisted bicycles subject only to bicycle law. As such they are excused compliance with motor vehicle law, provided they fully comply with the relevant exemption conditions. Therefore they do not have need of any certification of actual power.
3) Since an assisted bicycle can range from a small wheeled light folder to a circa 150 kg pedicab or van capable of carrying three adults or 250 kgs of goods over any normal roads, the actual power permitted has to vary to suit the purpose. Therefore the power limit indicated in the exemption conditions has to be nominal, leaving the actual power and torque provided entrusted to the designer suiting it to the designed purpose.
So why do we have this vague situation?
The authorities almost worldwide have realised what a terrible mistake it was to permit near universal car ownership, so they are trying hard to get the public to accept less environmentally and legally damaging forms of transport. The ideal primary means is the bicycle, but with widely variable terrains and personal physical abilities, some assistance is necessary, without all the complexities of motor vehicle law to make that acceptance possible.
Hence our EAPC permission, which has now become the only world standard for such vehicles.
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