Hello! I'm new to the forum. I installed a BBS02 on my bike and my wife's bike a couple of weeks ago, and we love them! Only problem, it is hard for us to ride side-by-side, no matter what gear we choose, or what assist level. For example, if we are both in assist level 3 (I have both bikes programmed for 9 levels), and we are both in our highest gear (smallest cog), I can't keep up with her without really pushing hard (which I don't want to do). But if she shifts up one gear, then she can't keep up with me if we both pedal at a comfortable rate. We have tried all kinds of combinations but nothing seems to work. I'd really like to get the bikes synchronized so we could comfortably ride side-by-side. I'm wondering if I changed assist level settings using the programming cable and software, if I might be able to give my bike a little more boost to help me keep up with her? I was thinking of bumping up the current limit % for each assist level on my bike by a couple percentage points. Not sure if I should do anything with the speed limit %. Any suggestions on what I might try would be greatly appreciated! JO
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I have had some success and thought I'd post for anyone who had a similar issue. I reprogrammed according to the setting in this article: https://edrivenet.com/bafang-programming/ I think the lower and more granular current limit settings are what helped the most. The high default settings for the lower levels were just too much. My wife and I are able to ride side-by-side, both of us pedaling at a comfortable pace, and not having to coast to let one another catch up. Her go-to assistance level is 3 (30% current limit) and mine is 4 (40%). Much more fun to ride together now!
i wrote a guide on bbs motor programming here with the best settings : https://www.johnnynerdout.com/forum/general-ebike-forum/bafang-bbs02-bbshd-controller-programming-a-guide
also your two bikes speeds may not seem in sync due to any number of factors:
are the motors the same?
are the bbs02 profiles the same? often stock settings are different on controllers
are the rear cassette cogs and front chainring size the same?
are the bikes the same?
what weight difference is there between you and the bikes?
are the battery voltages and capacity the same?