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  1. C

    BBS02 750W Bafang throttle stopped working

    Thanks Fetcher! It's been a long time! Hope the e-bike world has been kind to you! I stumbled onto the old lesson that assumption is the mother of all %#$@ ups.... lol The velomobile had an unusually long throttle cable that was spliced 3 times along its length between the throttle and the...
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    BBS02 750W Bafang throttle stopped working

    I connected to my laptop computer and read back the parameters stored in the controller using the Bafang software. The throttle settings were not corrupted. This is actually a good thing! But... The mystery continues as to why the throttle won't work....
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    BBS02 750W Bafang throttle stopped working

    At the Bafang harness side of the throttle input going to the motor, I still read +5V between the two lower pins adjacent to the notch on the female connector. This tells me the +5V bias supply from the controller to the hall effect throttle isn't blown. When I disconnect the throttle cable and...
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    Programming the Bafang Middrive BBS01+BBS02

    Thanks tomjasz! Charlie
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    Programming the Bafang Middrive BBS01+BBS02

    I have a Tripod velomobile from Columbia Cycle Works in Portland Oregon. It uses a Bafang 750W BBS02 drive. I'd like to get into customizing some of the programming. Primarily, I'm interested in making my throttle work on PAS 0 so that I don't have any power assist except for the throttle. I'm...
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    Bafang Error 21

    I had a chance this past weekend to thoroughly test out the reed-switch type speedometer sensor. It works fine. :mrgreen: Charlie
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    Bafang Error 21

    Nope! No need for a new controller! I got to thinking and it occurred to me that a lot of the bicycle speedometers on the market use reed-type sensors instead of hall effect sensors. The advantage to this is that the reed-type sensor doesn't require a bias supply to switch on/off when a magnet...
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    Bafang Error 21

    Ha... I was just in one of those threads! :) The cables including the speedometer cable goes inside the motor housing and directly into the potting, so there's no way to get at the board itself to effect a repair. It does, however, look like the potted controller itself may be replaceable...
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    Bafang Error 21

    How do I get at the controller? Charlie
  10. C

    Bafang Error 21

    Thanks astmacca! I think your readings are accurate. I had to do the same thing to measure mine. This is exactly what I was looking for, but hoping wasn't the case... :( This means that my Bafang motor controller has a failed speedometer hall sensor drive supply output... :( Charlie
  11. C

    Bafang Error 21

    Can anyone please make the voltage measurements I'm asking for in the enclosed drawing on their working Bafang 350w/500w/750w mid-drive? It's the only way I can be 100% certain that I have a real issue with my Bafang motor controller. Thanks! Charlie
  12. C

    Bafang Error 21

    Thanks for your reply astmacca. I tested the speedometer hall sensor by itself on a bench with a scope and a magnet. When I apply 5V to the red wire, ground to the black wire, and look at the white wire with a meter, I get 0V on the meter when the magnet passes over the sensor along with the...
  13. C

    Bafang Error 21

    You are correct. The motor will still run with the display only displaying "ERROR 21". Power to the display unit would have to be cycled without pedaling in order to see information like battery level and to adjust the assist level. This is real bad programming on the part of Bafang! Imagine...
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    Bafang Error 21

    I posted this on the general ebike discussion by mistake. (moderator please remove from there) I recently received my Tripod velomobile from Columbia Cycle Works. Something has gone wrong in that I get an error 21 when I try to ride it. This is a speedometer error. Sure enough, my speedometer...
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    Bafang Error 21

    I recently received my Tripod velomobile from Columbia Cycle Works. Something has gone wrong in that I get an error 21 when I try to ride it. This is a speedometer error. Sure enough, my speedometer stays at 0 mph now all of a sudden. The Bafang controller won't run with any error messages, so...
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    Nexcell 48V 2a nimh battery charger

    Thanks guys! I wound up going with a Tenergy 48V 2A nimh charger. I liked this one because it does temperature as well as minus delta V cutoff. The cheaper Tenergy 48V 1A nimh charger I first saw only does minus delta V which wasn't an option for me as this is a hard charge that minimizes cycle...
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    Nexcell 48V 2a nimh battery charger

    Hey guys, It's been quite awhile since I've been around.... Many changes in who's using what! I'm still riding my e-EZSport CX recumbent and am going on 7 years with the same old 48V 20ah nimh battery pack! I just purchased a Tripod velomobile from Columbia Cycleworks in Oregon. There were a...
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    LiFePO4 Battery Showdown!

    Nice data Bob! This is looking really good! Charlie
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    Idiotic Car Drivers !!!

    I just knew it was going to be THAT video. I ran across this awhile back and was quite impressed with the madness. Charlie
  20. C

    * * * The 1000 Mile Club * * *

    3568 miles on my now modified Currie e-ride mtn bike and 3600 miles on my e-EZ Sport CX recumbent. Both are still USPD powered. Charlie
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    Idiotic Car Drivers !!!

    Didn't the original Tidalforce bike have a gun rack? :-) Charlie
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    Idiotic Car Drivers !!!

    The second ammendment is useless if citizens can't own current weaponry. The second ammendment is the reason we have the first. Charlie
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    A letter to Currie Tech

    The original Currie USPD drives were upgradeable with a lot of various motors. Plug&play was the buzz at the time. Scott MacGregor was (and still is!) the Currie guru. Currie made their changes on these later bikes for price point only, and has been explained, don't care. For what it's worth, I...
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    First ride a bit of a disaster

    How were you riding? Were you using the motor all the time with the throttle wide open? The idea is to ride the bike like a bicycle and only use the motor when your power alone won't get you through a headwind or up a steeper hill. Charlie
  25. C

    REvo Power Letter to Early Adopters.

    If I were even going to consider that route, why not go all the way and make a 'Whizzer'? There are probably better, more reliable gas engine kits out there too? Then again, why not just fork over a grand and buy a gas scooter that right out of the box would probably blow the socks off of...
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