jonny jeez
Legendary Member
- Location
- Chislehurst, Kent, UK
I would have thought it impossible to calculate an exact expectation of range as the eventual range will be effected by wind, terrain, heat, stopping and starting (traffic) and even the rain.Hi everyone.
I recently wrote a post asking for some help with a newly purchased second hand E bike.
It turned out one of the three batteries was no good so I have replaced that one like for like.
All seems ok but I am trying to wirk out the correct range of the bike.
Just wondered if someone could confirm I am doing it right or could correct me if not?
So here is what I have done.
1/ Take the power of the motor and devide that by the battery voltage to give me the current consumed by the motor.
2/ Take the Ah rating of the batteries and divide the current cosumed by it. This should give me the total running time.
3/ Take this running time and multiply it by the running speed to give me the maximum distance.
I have assumed a couple of things here.
a) the throttle is fully open to running at max speed / motor power.
b) there is no pedalling so running purly on the batteries.
I guess, if I have done this correctly then the real figure will be slighly less due to efficiency of the motor and other external influences etc..
Thanks in advance everyone.
Best regards
Jonathan
Not to mention any potential modifications to chainring or sprockets (to gain more speed)
Don't the manufacturers suggest a range that you can check by just riding.