Issues in October 2017

The October statistics are based on over 1.8 Mio. kilometers or 1.1 Mio. miles experiences from 336 ebike systems or users.


As usual no month without a motor issue! The last days I registered 23 new motor issues, some of them were in the past but 20 of them were from the Impulse system of 2015 till 2017. Continue reading


Differences between Derby Cycles Impulse2.0 and Impulse2.2

The durable Impulse1.0 motor that was developed in coorperation with Daum Inc. in 2011 was developed further and installed as Impulse2.0 in several bikes model year 2014, 2015 and 2016.

Continue reading