Originally Posted by
DrkAngel
There are differing expectations and uses of eBikes.
I tend to group them into 3 major classifications - based on degree of pedal assist.
I, personally, would like to sub-categorize "eBikes", into 3 categorizes.
2. eBikes - electric bikes
>750 watt output motor ?
Where healthy man is capable of reasonable contribution - but, essentially, only during limited throttle use.
Due to wind resistance, a tucked position increases range, better than a "proper" pedaling position.
Somewhere near 30 mph, the cyclist, (<10-15% contribution), is detrimental, to speed and range, compared to a more aerodynamically positioned, (non-pedaling), rider.
Typically the motor is the driving force.
Pedal assist is possible and recommended to increase acceleration or to extend range.
But pedaling is not required.
In fact ... at higher speeds, seating in a proper pedaling position and providing substantial pedal power is less effective than motor only in a lowered tucked position.
A high power front hub motor is not recommended!
Spinning the rear tire is called "fun"!
Spinning the front tire produces a nearly immediate ouch situation.
Most popular type is the
rear hub motor.
Limited by a single gear range but ideal for sustained output at cruising speed.
The up and comers are the
mid-drive systems. This allows high speed assist with substantial starting torque.
For the
eBike ...
The cyclist becomes a secondary force.