Aerovision

The "controller" is within the BBS01B itself, not the display unit. You use the cable to connect to the BBS01 (motor) and the display is then disconnected. I had a few issues similar to what you describe with the pre-set weak settings. Using the software and cable, I experimented for a few weeks and settled on 5 power settings giving 20, 40, 60, 80 and 100% current, with all five giving 100% speed (which is limited to 16mph). Keep Current is set to 80%. Since September, I have done 1,700 miles on my e-bike and am very satisfied with these settings to suit my personal requirements (we also have lots of hills). I also installed a Lekkie Blingring (46T) and Lekkie offset cranks. An extra investment, but very worthwhile. So far, not a single chain derailment. Hope of help.

And from the Bafang Configuration Tool, v2.2b - which seems (to me) to be correct.

I set 2, 4, 6 & 8 to 0% on both A and speed. 1, 3, 5, 7 & 9 set as normal. Tested in 9-mode. Changed to 5-mode and only level 5 worked. Then, set 1, 3, 5 & 7 to 0%, 2, 4, 6, 8 & 9 to normal, tested in 9-mode again, then into 5-mode and all worked. So, I am quite convinced that this is the case for the 850C (although I know is not for some other models). As you say, rather strange.

Answering my own question, following some experimenting – for the DPC-14 / 850C used in 5-level mode, not 9-level mode – 1=2; 2=4; 3=6; 4=8 and of course 5=9. Yep, I was surprised!

Hi, I am a newbie to pedelecs, having just converted a Giant Roam using a Bafang BBS01B. My display is the 850C. So far, so good - but I have a question relating to the PAS settings in so far as I am preferring to have 5 levels in use, rather than 9m levels: The Bafang PDC-14 manual states that using 5 level: 1=1; 2=3; 3=5; 4=7 and of course 5=9. But, the Stefan Penov Bafang Control Tool (v2.2b) suggests in the "Infos" section that: 1=2; 2=4; 3=6; 4=8 and of course 5=9 for the DPC-14 / 850C. So, which one is actually correct please. Thank you, Ian

I am in Surrey, not too far...... As a newbie with a Bafang BBS01B on a Giant Roam hybrid bike, I would be interested in more info as to exactly where (and how) you grease? Already knocking 150 miles and only fitted a week ago, so 1,200 miles will soon be achieved!