Must sit on the bike before you turn it on?

admccrea

Member
It states it on page 25 of my manual:


How to ride


Before you turn the bike on and start riding, you should

understand the way the pedal torque sensor works. Mounted

in the drive-side rear dropout, the torque sensor measures the

very slight deflection in the dropout plate that occurs when

you pedal. Based on this measurement, the sensor outputs a

signal to the controller which is processed further and ultimately

translated into motor output.

In order to properly measure relative deflection of the sensor,

the controller first needs to recognize a “zero point”. This zero

point is calculated each and every time the bike is turned on,

immediately after you push the power button.

Because the sensor zero point is the basis for all measurement in

the system, it’s important that it be very accurate, considering

the conditions the bike is being used under; most importantly,

the weight of the rider.

Because of this, we recommend you follow this procedure every

time you turn the bike on:

1. Sit on the bike, putting as much of your weight on

the saddle as possible. Put your feet on the floor

for balance, but try not to rest too much weight on

them.

2. Press the SET button on the display to turn the bike


on.

3. Wait a second or two, then begin riding.

For the best ride, do not put your feet on the pedals, and do

not begin moving the bike until after powering up the system as

recommended above. Although the software is fairly forgiving,

it’s possible that the bike could be too sensitive, or not sensitive

enough to ride ideally if the procedure isn’t followed.
 

opimax

Well-Known Member
i thought the Stromer and eflow were very similar and used the same torque sensor, why doesnt Stromer say this then? are they similar enough to do this ???
 

J.R.

Well-Known Member
i thought the Stromer and eflow were very similar and used the same torque sensor, why doesnt Stromer say this then? are they similar enough to do this ???
It could just be a matter of weight distribution and frame flex. With the eflow the battery and rider weight are on the seat-tube, that may cause more flexing at the sensor mount. Stromer is a very beefy, rigid build and the battery is on the down-tube. More flex can be good for some and more rigid for others, there's good and bad in most designs. The good in both bikes far outweighs any bad you could find.