If the speed sensor and brake cutouts are functioning I bet on a bad controler. It is very easy to configure. Have tryed to google the Problem etc but cant find any Info. The first area to grease is that of the Bafang BBS02 secondary gearbox. It is not budging and I dont really want to start attacking it with a drill just yet. It is capable of reaching speeds of up to 28 mph (45 km/h) and can travel up to 100 miles on a single charge. Version B is shit! Of course, if you want it to last over time, you have to take it easy (dont drive at speed 9 all the time) and grease it from time to time. If the threads on the case have stripped out your only option is to convert that BBS02 drive unit back to 68mm with a 68mm axle and move the existing 100mm axle and axle extension to anew drive unit and re-tap it. What were they thinking, releasing it without another name? I never am. Some users report a very faint click when they hit the throttle which is thepower cut out as the battery shorts to ground from the blown mosfets. Switching to Volt it still shows 52V or so. I would just buy a $60 replacement controller and pop it in. Bafang BBSO2 not turning on - Electric Bike Forums Assembled the ebike, which went well. Is dielectric grease somehow screwing everything up inside the controller or is just heavy rainfall enough to destroy the controller? Aliexpress.com. Thanks for any help you can provide! Troubleshooting the BBSHD / BBS02 - Electricbike.com Ebike Forum 3. Bafang 8Fun Programming Software & Guide (BBS02, BBSHD) - Ebikes Forum But Im between BBS01B and BBS02B. I have managed taking the controller out of its ver b casing and into my ver a casing but the unit will only run at PAS 3 and intermittently any suggestions ? Good luck with your project. Said and done ordered a Bafang BBS02B 750w 48v kit with a 850c display and a matching 17.5Ah battery for a wopping 840Wh capacity! While the BBSHD is rated for a max current of 30A which in turn can develop peak power up to 1,764 Watts of power when paired with a 52V . Is there a setting which can possibly cancel out my pedal assist besides the Stop Delay which is set to 250ms? Karl If you are not going to change the controller, have fun fitting the reduction gear parts manually. I tried gently tapping the shaft but seen no movement. A or B version? I have changed out my wire harness. Im thinking only regrease the secondary side with mobilgreas 28 and check after a while for any leaking drama to the primary side, if its any better than the old model. Bafang BBS02/BBSHD Mid-Drive Motor Kit Installation - BafangUSAdirect JavaScript is disabled. thanks both. If the plastic connector has started to melt or the contact is black and damaged then replacing the connector is recommended. If you research endless sphere theres always a solution to these fails. Who told you its different casting? Follow the instructions in the user manual to prevent accidents and serious injury. In the future you may want to buy from a dealer that knows what they are actually talking about. Note that the Bafang tightening key will also be very useful for you to tighten the motor retaining ring afterwards. im from austria and have experience with 500W and 750W bbso2. Yes, its definitely worth the 3 hour tinkering! BBSHD and BBS02 Configuration (Programming) Resources Here is a list of everything you need to successfully configure/program your BBSHD/BBS02. I rode it the next day as well, all good. the reason some of the new BBS02B units fail after a few kilometers of driving for some of the commentators here is pretty simple: the controller is as usual filled with a breakable putty-like mass. If so, clean the entire compartment and re-grease, especially the 2 sides of the big wheel. Bafang seem to say the upgrade to version B has improved waterproof, stability, power, energy the waterproofing upgrade catches my eye, has anyone had problems with this on the A version? The BBS02 will not disappoint. The only thing working for me is a needle. Bafang Completely Redesigns The BBS02 And Tells No One be sure the needle is inserted the farthest you can before prying or youll just destroy the rubber. Is the assembly complicated? In this same marketing vein, all of the 750W BBS02 motors we sell are the latest and greatest BBS02B motor with the "upgraded controller" and or "upgraded programming" (what other sellers are referring to with regards to all of this additional marketing lingo is absolutely unclear). Can this be programming setup? If I had to guess, you need a new controller. The 500c display only has up to 5 PAS levels. I prefer the Speeed program that works on my Android cell phone. Salt is especially bad for electrical connections. My bike's controller burnt out while the bike was left with the battery in situ. The pinion gear is also different between the different versions, On the B version the motor case is printed with BBS02B, with the original A version it just says BBS02. it is a washer, originally with 1 or 2mm or rubber coating which i have scraped off trying to get further. TSDZ2 vs BBS02 - Bafang or Tongsheng (Which is Better?) - eBike Choices Since I have been touting Karls Special Sauce as being the best thing since sliced bread, and those programming settings had a Time of stop setting of 5, pretty much anyone whoset their version B controller to my programming settings was sure to have a flakey PAS that would pretty much not function properly. If you buy a drive unit with a battery pack most reputable vendors will set the LVC on the BBS02 to match the pack it is mated to. I removed the grey potting from the controller and eventually found what I think is a burnt out circuit board. This leaves most BBS02 owners with the difficult task of troubleshooting and fixing their own technical problems. Lithium is today the top level of lifespan and this battery allows me to do 25 miles without problem. https://lunacycle.com/bbs02-mid-axle-assembly/ If you have a shark pack make sure you read this : 2.1) My display works but no motor movement. Go Eric. Best way to not fry or overheat your controller is with a temp probe. You could try to check from a vendor if PAS disk is different between A and B models, and eventually buy and replace your A with B, hoping that sizes are identical. I admit that having assembled this kit myself is a real satisfaction. He is most likely an alien from another planet sent to Earth to shame all other ebike builders for their messy work areas. Evaluate whether there is any moisture present, and especially if any salt or saltwater is present on anything electrical. The Bafang BBS02B 750W is considered one of the best today and theres a reason for that. Chat Replay. If there is any problem with the inventory, we will send you . This page was generated at 1 minute ago. My favorite throttle, a right hand thumb mounted on the left side. it was built end of november last year. If you are carrying heavy loads or just want to get the maximum torque for steep terrain or even in sand, snow, or grass terrains, you might be inclined to go with the BBSHD motor. Problem with Bafang BBSHD being hard to pedal with motor turned off. If your connector looks like this it might be time for a replacement. I guess I didn't have my thinking cap on when I said check the sensor . Most of my BBS02 units have a temp probe installed on them, the instructions for doing that arehere. Smarter Shopping, Better Living! I reassure you right away, Im not a great handyman. Are the brake cutouts functioning? If you have more than one battery you can also try that on your bike which will work if you dont have a watt meter. As the sun was out, I decided to take the bike for a New Year's Day ride and the bike didn't get off to a great start to the year.. After a great summer of riding without any problems and clocking up around 1k with the motor, it was a little unexpected. I have a BBS02 Version B 750W and was looking to remove the drive wheel to clean out and re-grease. If you dont, heres what you risk : abnormal motor noise (a properly greased BBS02 motor should not be noisier than an electric drill), premature wear or worse: breakage! Often if your primary gear peanut butters the bike will not roll backwards without ahugeamount of resistance. If you are having continual chain problems where the chain keeps slipping off the chainwheel no matter how you adjust the tension then you should swap the chainring out to aRaceface Narrow\Wideor aLekkie Bling-Ring. I still build them because i give my customers warranty on parts.Which i have in stock. If you mean the reseller you mentioned you bought from in another thread, they are not bafang, just a reseller that snagged a rather misleading website domain name. 2/The motor runs erratically. You can pry it out with a needle but youll end up with a bended needle. does it switch off if it gets too hot? No, just buy a new BBS02, its much easier and probably cheaper. Update - New controller installed and all working perfectly. I just bought one and wondering if I should regrease 2ndary gears first? The connector can be broken but still look fine from a cursory inspection. its not a rubber plug 1cm deep, 2 mm thick max. As any one got pictures of the default settings please because I dont think my original saved tidy. A million dollars, thats just crazy talk. Hi! The Bafang BBS02 is one of the most advanced kits and paradoxically, one of the cheapest. I have on of these BBS02B that I bought from Paul in august. Can anyone advise if the controller for the 36v 500w BBS02b can also fit on the BBS01b motor? Then you put on the rubber washer and tighten down the 2nd lock nut against the first lock nut. Hi according to a BaFun distributor in China the new B model has improved waterproofing. there is no way you can get round the outside of this washer. They have small female spade connector. After weeks of research, I decided to choose the Bafang BBS02 B kit (44T sprocket.) Check the easy stuff first like ebrake connectors. When we refer to the BBS02 throughout this article and on our site, we are referring to the latest & greatest BBS02B motor with an "upgraded controller". The MosFETs in BBS02B are already much higher quality and more efficient than the ones in BBS02(A), the model type used in BBS02B was formerly used to mod BBS02A models. If you have a 100mm drive unit and the unit is loose then the axle extension may have loosened up or stripped the tapped threads and pulled out. The battery is housed in a custom built aluminium case and not so easily removed or unplugged day to day. Ho[e that helps. Thanks for responding to an old thread. Hi Midmatt, Change), You are commenting using your Facebook account. the outer ring, which still has rubber on it, is a flange, its not rubber, i cant get anything past that. The Bafang BBS02 motor having a power of 750W, it is considered as a moped motor. The BBS02 750W version B was introduced without notifying US-based dealers that the changes were coming. If your BBS02 has a Low voltage cutoff that is too high for your particular pack the only way to raise the LVC is to follow the instructions in the programming guide or send it back to your vendor for reprogramming. It oftenly does not fit in a term which would connect its outer rounded edge on the middlewith the case cover. This was less than ideal. What is your price ? If the nylon gear is fine when you take it apart then you should check the secondary reduction gears (both are metal so unlikely to fail) and also check the freewheel which is located on the main axle inside the large metal secondary reduction gear. This has the big advantage of avoiding jolts. When I tried using the walk assist mode (holing down the "-"-button) at the start of my ride the bike suddenly accelerated pretty quickly. The problem is this. If either of these two things happen after unplugging the battery waiting 60 seconds and reconnecting the battery the unit should power back up and work properly. Im a big fan of testing the easy stuff first and the BBS02 runs fine without the ebrake connectors. I couldn't find any posts, FAQs, guidance on how to test if a controller is blown so after checking everything and replacing XT90 connectors once more I tried again. Throttles rarely fail. The BBSHD is more powerful than BBS02 due to its massive torque (up 160 N.M) and a higher rotation speed (RPM). I have a BBS02. The latter has technical characteristics similar to the BBS02 but does not require insurance and wearing a helmet because its power is limited to 250W and its speed at 15.5 mph. It may seem like a detail to you, but I assure you that when you drive in a field or in the city at dawn, its really very pleasant! Ive also bent the actual alloy chainrings several times too. It was manufactured in april 2016. You are using an out of date browser. Being able to reprogram this motor is a real bonus. For more information on shark contact maintenance and practices for keeping it in good working order please see this page. Concretely, I use it to commute (mainly from the city with some climbs) but also to go hiking in the fields and the forest. The reason this has happened is because yourlock rings at the end of the axle have loosened. Please enlighten me and unboggle my mind! As with any technical problem the first thing you have to do is break the problem down into a series of steps. I live in Lyon and even if the weather is fairly mild most of the year, it sometimes rains. The design of my battery and install is in a very tight spot within a full suspension bike's triangle so I can't have an off the shelf clip in and out battery pack. The only other difference I found was that the Version B does not have the rubber plug above the circular plate that houses the nylon gear. please let me know what to do 2. If the ebrake sensor is busted or accidentally active then the drive unit will not do anything when it is on and the display is active and you will think it is a dead controller. But none of he BBSXX have torque sensing. I have one of the new BBS02B 500w Bafang mid drives which has done 3500kms. Price: $$ | Speed: 31 mps | Battery: Optional. While the BBSHD is rated for a max current of 30A which in turn can develop peak power up to 1,764 Watts of power when paired with a 52V battery (58.8 V x 30 Amp). This reducer is easily accessible: it is located under the plastic cover of the motor: there are 5 screws to remove. Programming the Bafang BBS02 Bafang BBS02 Alternatives Conclusion E-Bike conversion kits remain a popular option in 2023 and the Bafang BBS02 still reigns supreme amongst DIY electric bike enthusiasts. . ? I want to know if there is anything off the old motor worth saving or should I just bin it? Bafang BBS02 Uncovered: Is It Worth The Time And Effort? - eBike Choices The problem is that often when you tighten down the 2nd lock nut the 1st lock nut that is already there gets even tighter and then ends up being much too tight. I have a Programing cable and set the assist to start after 2/24 rotation but still wont asist till u go fast enough. if you send me your number i will call you back. In France, for example, you must have moped insurance and wear a helmet. All times are GMT-8. Just like Goldilocks and her bears your bearing tension has to be just right. Buy 2 identical drive units from the get-go. First version BBS02 had controller issues. 1/the controller housing is incompatible Have anyone experienced this? Good luck. Nobody told me, I disassembled the motors myself to compare them and recognized lots of differences. It may not display this or other websites correctly. BTW, all color displays do NOT have 9 levels of PAS. The higher your voltage is the worse the problem seems to get. It is just a standard radial shaft seal just pry it out with a flat screwdriver and replace it. You are using an out of date browser. In all honesty Ive never seen any of these other codes even though Ive had plenty of low voltage packs and overheated controllers shutting down on me. This will oftenly cause a burnout of one or more FETs in the 9 FET array of the BBS02B. Hydraulic sensors / mechanical brake levers, LCD screen with Bluetooth function to be connected to your smartphone, Chainring (44T / 46T / 48T / 52T according to your choice) with plastic protector, A small bag with nuts and the cables necessary for assembly, Installation manual (I recommend the video instead). I think this is pretty much impossible, as the motor casing is different and even most of the parts are modified in the BBS02B (not neccessary in a better way, but still modified enough to not fit in the other aluminium casing). And suddenly nothing happends when I pressed the button. But just to make sure I'm not completely stupid and wasted my parent's money on a degree in electrical and computer science. You must take care when removing rear tires for service on fatbikes as the speedocomes quite far out into the tire area and can easily break when you try to force the tire past the speedo. Ive installed 3 version As with no problems! M400 36V motor not working anymore (does not turn on at all), Items and Parts for Sale or Wanted, By-Owner. [ COMPATIBILITY ] The gear shift sensor is compatible with BAFANG BBS02B BBSHD BBS01B 1000W 750W 500W 350W and 250W mid drive kit ; [ FUNCTION ] If you are ordering a 8fun mid motor , this derailleur shifter cable will be you necessary part for electric bike conversion . Older BBSxx versions are subject to a fairly high rate of controller problems. The modification of this one model is completed (at least with the BBS02B) and at the moment I am missing the time for other BBS models and their modifications. On the plus side I've learnt lots more about the BBSXX, my battery and wiring. Instead there is a clearance gap between the middle area of this aluminum piece and the case cover of about 0,5 to 1 mm which is in the process then filled with a thermally more or less isolating putty mass. When you get the BBS02 drive unit directly from Bafang, Ebay or manynon-reputableChinese vendors the PAS0 level will give you no throttle at all. This documentwill guide you down the often times confusing path of figuring out why things arent working right and hopefully get you pointed in the right direction to get it fixed. I connected it up to a relay and a fuse and used a buck converter to get a voltage from the battery that I could use for a headlight. it is a washer, originally with 1 or 2mm or rubber coating which i have scraped off trying to get further. There isn't even a hint of sparking if I test connecting the Xt90 connectors whilst the battery is life, but now I have the added security of a solid state on/off switch between the battery and controller. i could try those curly pointy pincers but it does seem quite tight.