2016-04-12, 06:45
Yesterday evening I managed to shift a NuVinci hub electronically whilst riding the bicycle. I very quickly taped and cable tied everything to the road bike and wired it all up.
![[Image: WP_20160411_008_zpsfaeexlbb.jpg]](http://i1301.photobucket.com/albums/ag114/Ed_N_R/Mobile%20Uploads/WP_20160411_008_zpsfaeexlbb.jpg)
Although I was able to shift the lack of feedback and inability of the servo to shift under load meant the ratio I got was random and hard to control. However I've located the problem to excessive shift resistance on the N360 I'm using. Its a second hand one off ebay that had a destroyed freewheel and happens to have a road bike size rim. The next thing to do is move everything onto the other bike and try with the N380 as it has a much lower shift resistance. The servo is rated ultra high torque, 7.7kg.cm at 4.8Volt so I'm hopeful it will be capable. If it can at least shift a little between pedal strokes it will be fine.
Although I was able to shift the lack of feedback and inability of the servo to shift under load meant the ratio I got was random and hard to control. However I've located the problem to excessive shift resistance on the N360 I'm using. Its a second hand one off ebay that had a destroyed freewheel and happens to have a road bike size rim. The next thing to do is move everything onto the other bike and try with the N380 as it has a much lower shift resistance. The servo is rated ultra high torque, 7.7kg.cm at 4.8Volt so I'm hopeful it will be capable. If it can at least shift a little between pedal strokes it will be fine.
- Oran