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    Bafang BBSxx - fault finding and fixes

    BIKE FIXED For those who may have similar issues... I was suffering cutting out and low voltage warning issues. I thought I had ruled out bad power connections as I had run the bike on the stand with the throttle wired open so I could manipulate all the problem areas with both hands to make it...
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    Bafang BBSxx - fault finding and fixes

    To the guy who has the noisy drive keep building it up and don't worry just yet. Mine has really taken some punishment and been taken fully apart and reassembled twice now and done thousands of km. The first time it did chew a bearing up that cost less than a tenner to replace, the second time...
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    Bafang BBSxx - fault finding and fixes

    Hello all, its playing 'silly beggars' again For a while I have had coggy / notchy sensation through the pedals its kind of like the motor is pulsing rapidly instead of running smoothly. This was most apparent in PAS mode and seemed to clear using throttle and at higher motor speeds. Today...
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    Bafang BBSxx - fault finding and fixes

    :D DRIVE WITH MASHED UP BEARING FIXED AND DONE 120 MILES WITH NO ISSUES! :D I wanted to wait until the rebuilt drive had got a few miles under its belt before reporting a final closure post. I got the drive rebuilt with a new bearing. I had a few issues... I had to sand with very...
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    Bafang BBSxx - fault finding and fixes

    How I removed the outer bearing shell from what was effectively a blind hole. I am sure there is an easier way... but I couldn't think of one so I did this! ZJsySWVZSKY Details of the bearing and more for the benefit of other users. gfoI29lsSbQ
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    Bafang BBSxx - fault finding and fixes

    Thanks for being the only one to address this annoying issue. To be honest as I am sure you can see I have 'bigger fish to fry' at the minute as the unit is reduced to its component parts! I did try to explain this annoyance about a year ago without anyone else having the problem. From what...
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    Bafang BBSxx - fault finding and fixes

    OOps sorry still learning, Should work now.
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    Bafang BBSxx - fault finding and fixes

    Yah I cant believe a metal gear has worn so much when it runs on a nylon one. If you look at he video above the pictures I show the condition of the nylon cog. Its not too bad, doesn't look chewed up like this one? What I dont show is them meshed together. I tried this and they fit together...
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    Bafang BBSxx - fault finding and fixes

    LET THIS BE A LESSON TO YOU ALL, DONT IGNORE NOISES! You have to see this video! Little help?? Dw2wNuyzOgI
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    Bafang BBSxx - fault finding and fixes

    Okay so here is the final (I hope) tear down video. I would like to know if what I have found is normal or not please. Also hopefully you should see below the photo's of the helical part I think has some unusual wear on it. I think it shows it quite well. If you look at the mid shot although...
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    Bafang BBSxx - fault finding and fixes

    I would never have thought of jacking screws! Didn't even notice any extra holes! I had a night off to go watch the first nocturne cycle race meeting in my town. I just spent all evening wondering, "could I win if I was on my EB!". It was really cool lots of sprint finishes, crashes and a...
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    Bafang BBSxx - fault finding and fixes

    Thanks for your detailed answer Kepler. I took apart the motor as you suggested and saw what was inside. That's about all so far. I did just go back and read the start of the thread. It didn't make sense before as I had to break open the motor and see the parts my self to see what was meant...
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    Bafang BBSxx - fault finding and fixes

    Not good news. Looks like I may have to make good on my earlier "I'd buy another tomorrow" comment. Back to the hub motor for a while and if that breaks god forbid pedal power or the car! :shock: Observe... http://youtu.be/WoU9L6M2JwM
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    Bafang BBSxx - fault finding and fixes

    Okay so hopefully the following videos explain the issue. I assembled the bike over a year ago and I obviously forgot how it went together so my previous posts didnt make much sense. Only the chainguard can be removed with a screwdriver obviously! Sorry if they are too long, its the first...
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    Programming the Bafang Middrive BBS01+BBS02

    Sorry to be the dumbazz of this thread but if anyone can tell me about the power off feature of the controller I may be able to figure out why my bike turns itself off when you stop moving? If you keep moving i.e. the display is showing kph readout its fine, if you stop it turns off. You have...
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    Bafang BBSxx - fault finding and fixes

    Anyway enough guessing... I'll take it to bits!
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    Bafang BBSxx - fault finding and fixes

    I am reading fast as I am at work but I think you must be talking about another part than just the chainring. I will disassemble and I am sure it will make sense. Hope you are right!, easy fix is what I like!
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    Bafang BBSxx - fault finding and fixes

    thanks for the fast respone, I am at work but took my lunch half hour to take a look. If you mean the front cog being loose on the mounting flange it doesn't seem to be, when you move it the whole assembly moves a little on the bearing. I have 2 issues. 1. the whole motor unit is loose in the...
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    Bafang BBSxx - fault finding and fixes

    Hello everyone. I have a bafang crank drive which has has about 2000 miles on it. I think its a bbs02 from memory. It chewed through a chain and a 13t rear sprocket within 1900 miles so much that the chain would skip teeth even using moderate throttle. I thought the motor had broken and was...
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    New Bafang Crank-Drives

    Has anyone had problems with the pedal crank kind of slipping when applying torque (pedalling) whilst the motor is running! I have done about 1000 miles on a 250W version paired with a road bike but I think the one way ratchet system or whatever is inside is beginning to fail! Seems a bit...
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    New Bafang Crank-Drives

    2 questions for those of you familiar with the bafang crank drive kits if I may... 1...Does anyone know where I can get the style of connectors that are used on the kit? Specifically for the throttle. I want to modify the throttle but cant seem to buy a bafang replacement part in the uk with...
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    New Bafang Crank-Drives

    The previous reply is right only that (on my BBSO1 anyway) 2... is the speed limit on pedal assist only. Using the throttle over-rides this limiter making speed governed only by gearing, all other factors being ignored. On mine throttle crank speed on the highest power mode is circa 100 rpm...
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    Critique my commute bike plan, if you please.

    Although in the UK I am in a similar position and ride a winterised road race bike equipped with BBS01 having previously used a hub motor bike bought from a local dealer. Both did the 6.5 mile each way trip fine but the Bafang is streets ahead in both performance and ride satisfaction. My hub...
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