thanks to D8veh,Flecc and others for advice education and support.
I have two velomobile snow and get 18 mph averages without electric assist.
So I will not need to frequent these pages.
It's been interesting and enjoyable, only one person on my ignore list.
Trex is missed too for his...
Test ride every bike with the power off.
It shows two things, what it would be like with falt battery, as above
And just how good a bike it is, if it's a dog then the battery has to fight that before it gets to help you, so short range etc.
The wattage is controller dependant.
The basic idea is voltage it runs at times max rated current equals max power.
The second is manufacturers also have a rated power. For a 250watt motor or legal classification they often run at max of 6-800 watts.
Motors rated at 500 watts tend to be...