hmm..
in my eyes it would be enough when they could increase the 100Watt output to maybe 200Watt
as said: its a "Assistant" and not a motor-cycle
with 1000Watt motor a 1000g light battery would be maybe too small
for me there are 3 concepts of e-bikes:
1.) the once with 1000Watt power and more
(why should i add 200watt pedaling, when the motor allone does 5times more ?!?)
they have often BIG batteries (48V - 84V, 10Ah, ... heavy)
(but: 1000Watt input-power of a hub-motor... in praxis this are maybe only 300Watt on a steep hill output-power to the wheel, just to considere !)
these bikes are so heavy, that you don´t wana drive them without motor at all -> motor has to run always -> even bigger battery is needed
2.) the once with hub-motor and ~500Watt power
they are more like bikes...
nevertheless - with hub-motors and batteries - mostly over 20kg of weight
often you don´t wana drive that kind of bike offroad or without motorassistance
(any bike without motor would drive a lot better on human-power than these still heavy bikes with motor turned off)
some of them even have no freewheel (they call that recuparation-break... haha)
--> motor running most time -> big batteries needed
3.) is the design of the gruber bike... only 200Watt inputpower (that are ~100Watt on the wheel)
this is a true assistance..
a hill were i have to pedal with 200Watt on my one would no get a lot easier at same speed with motor assistance, i have only to pedal with 100Watt...
the bike still remains very light because motor+batteries together do not weight more than 2kg !!!
this bike is light as possible -> you can drive it like a bike, not feeling bad influence because of missing freewheel or heavy weight
nevertheless: on steep section or for a further boost in flat when accelerating you can have some extra power
1000Watt would be far too much in my eyes, would destroy the concept of having a light bike with an electric motor you don´t see...even dangerouse (paddels turn when motor is running)
too sum it up:
1* bike for going to work all day, long distance, relativly flat -> and you want to be fast and pedal nearly nothing --> 1000Watt-hubmotor-categorie
2* bike for going shoping, not that fast, flat --> 250-500Watt hub-motor categorie
3* bike for having fun offroad, for enjoying BIKING as it self, light weight, agil feeling, driven most time without motor, motor only for difficult (steep) sections --> a assistance with not more than 250Watt to the wheel that is as light as possible
for me Nr. 3 would be the nicest..
downside of the Gruber assistance:
1.) price (freaking expensive !!!)
2.) to load (noise) in my opinion
with the 40AH worth of batteries if they were SLA.
