The Bafang BBS02 conversion kit is a really popular kit among DIY ebike builders. Installing the BBS02 controller. Below I have listed some of the common faults experienced with the Bafang BBS02 over the last few years. The only way to know for sure is to remove the drive unit and check. I am all for a simple replacing, i do not have the time and resources to work on this as if i am some e-bike mechanic and i am not interested in trouble shooting anymore. hi, does anyone advice me what is the problem with my bbs02 750w 14ah battery? Read our affiliate disclosure. Electric Bike Throttle and Pedal Assist not working, Display reporting inaccurate speed, gradually decreases. Should i just by a new motor? Read our affiliate disclosure. If you grab the rear wheel and spin it backwards, if theres significant resistance, this can indicate a blown controller. Got home on Saturday, parked the bike. The throttle also still works. This continual sparking when connecting the pack can eventually destroyalmost any electrical connector, even ones like the Anderson power-pole connectors which are designed with a sacrificial tongue. The chainring looks warped when the drive unit spins around & chain falls off. I bought a second hand Bafang BBS02, 750w kit. Whne usually it was more than 1000w and more than 20 amps. You can also set pedal assist speed and current for each possible assist level (up to nine). Local time 10:35 PM Joined Feb 24, 2022 Messages 12 Points 3. I often get asked the question, is the Swytch electric bike conversion kit any good? My bottom bracket is a weird size (not 68,73,100 or 120) BBSHD\BBS02 Installation Problems & Fixes For Non Standard BB & Intrusive Chainstays Ton says: November 19, 2015 at 12:59 pm As always, nice article Karl! The latest Bafang BBS02B is available in three different configurations: 36v 500w / 48v 500w and 48v 750w. Ive finally found how this motor works. Recently something broke. The thumb throttle works without problem and I never loose power to the display. You can buy a 150Amp watt meter from lunacycle.com for $30 with XT90 connectors herewhich also works as a super accurate fuel gauge for your battery. M. Bafanf bbso2b To date, this feature is only available on their M models which require a special frame for fitment. This can be fine-tuned using the software, but out of the box, it can have a very on/off feel to it. Thanks for reading my Bafang BBS02 review. A visual inspection of the connector should show if arcing has damaged the contact points. Holding down the "+" button does not turn on the headlight. The problem with this is the steep angle of the chainstay can prevent the motor axle from fitting in the bottom bracket shell. I purchased a 20 amp hour 48v. Often if your primary gear peanut butters the bike will not roll backwards without a huge amount of resistance. Best way to not fry or overheat your controller is with a temp probe. Ultimately Luna told me my controller was fried and I should replace it. This can happen because the tapped threads are just aluminum and the axle extension is steel. J. Bike is doing this.. please help. Without pedal assist, I can hit 30 mph on straight land and no wind. Instructions for programming your controller are here and the programming guide is here. Fixed. Bafang says the problem is in the bms module thatis not communicating with motor because of In this comprehensive review, I take an in-depth look at the installation, motor performance and potential problems that may arise with this popular option. tomjasz Bafang BBS02 PAS/Throttle Problem. Almost anyone with very little technical know how can order a drive kit and 48v-52v battery pack and have it installed and running on almost any bike with 2-3 hours of work. After frustration, notice the brake hozzle on rear brake sitting outside so tucked it back in. 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. the wire connecting the display to the Eb-Bus cable ripped in half, this was the only damage of note (slipped on ice). If you would still prefer to fit a 52v battery, then I would lower the peak current to 22A. I checked the connections when I removed the motor everything was tight and there was no sign of pinched wires. After Menu. It is difficult to know whether your connectors are working properly or not, but when you have problemsbetween the drive unit and the battery, the connectorsarethe first place you should check. There is a13 minutevideo located here of a BBS02 breakdown that shows all the steps for complete disassembly byGuillaume Devot who somehow manages to keep his workbench impossibly clean the entire time. Bafang BBS02 Common Problems. It depends on what youre looking for in an e-bike motor. Ref the video I washed my bbs02 and it will try to go even took me a whole block today then quits its a month old can anybody suggest what I should do, Hi, Together with other friends we have buyed 4 motors BBS02b 750w 48v $30 for a fuel gauge that will take 150Amps and is an amazing must-have troubleshooting device. I put it on my bike and everything works except for the pedal assist. You are using an out of date browser. Theres no easy way around this, and I would stick with 135 mm-142 mm rear hub bikes. The company's 1st suggestion was to unplug the electric break sensors. I use a small piece of gorilla tape wrapped around the spoke and then locktite the magnet sensor down to the spoke as hard as I can. 04-09-2016, 09:04 PM. But, like any mass-produced electrical item, problems do occur from time to time. A messed up pack or a pack with poor electrical connections can often read full voltage with a normal voltage meter but as soon as there is any load on it the voltage can drop precipitously. J. Bike is doing this.. please help. I recommend putting the axle in a bench vise and getting a very large Phillips screwdriver and then attaching vise grips to the screwdriver handle and turning them with all your weight on top of the screwdriver. The USB port is not putting out power for my phone. https://lunacycle.com/parts/?sort=featured&page=2. Mat995; Feb 3, 2023; Replies 0 Views 294. Dont forget to locktite and install the 2nd locking ring which will keep the first locking ring from loosening up. I have to occasionally tighten the crank arms on the bikes with BBS02 750W motors. In this extensive BBS02 review, you will get to know everything about it. Last I heard from the company was it's probably the hall sensor and I will need a new motor. (LogOut/ The former version of the same motor the BBS02 was working fine. C. Why? Most of the controller failures I experienced were on bikes fitted with a 52v battery. The sensor itself is about 25 dollars. Want to figure out all your problems? Replacement Bafang wiring harness available from Amazon. Since gates carbon belt drives pasta long time, this would seem to be Now I only get it on when connected to the charger. tomjasz Bafang BBS02 PAS/Throttle Problem. The sensor itself is about 25 dollars. Holding down the "+" button does not turn on the headlight. You could also create a commuter bike and a trail riding bike. All depends on your pedalling speed and in then end on the gear. 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. After learning that the problem would more than likely be caused by a controller failure, I sent for and replaced the Many of these steps will have you swapping out components that you probably just wonthave lying around. For the price, theres nothing to touch it. Please read my article on UK/EU electric bike law.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'ebikechoices_com-netboard-2','ezslot_17',179,'0','0'])};__ez_fad_position('div-gpt-ad-ebikechoices_com-netboard-2-0'); When the Bafang BBS02 was first released back in 2015, there were only a couple of displays to choose from. If they arebent youll see it. I have performed many diagnostic tests on everything from the pas board to the Hal sensors which all seem to be outputting normally. The flip side to that, is Ive also had a fair share of issues. Very new Bafang 750W BBS02 with 48v battery. Recently purchased my first ebike. After learning that the problem would more than likely be caused by a controller failure, I sent for and replaced the https://drive.google.com/drive/folders/1gqvb_eDRITrOKZJxmWF5GKFAhUGFl8xP?usp=sharing Most people have a favored foot that they feel most comfortable being forward when you are not pedaling, just swap it with the other foot and keep ridinglike a hooligan. Good luck, and btw i have spare controller if anyone needs one! 08-21-2021, 03:56 AM. Like I have done Bafang conversions which are still going strong after 4 years and over 5000 miles. Yes, you can use a 52v battery with the Bafang BBS02B. I would personally advise sticking with a 48v battery which is 54.4v fully charged. In this extensive BBS02 review, you will get to know everything about it. Are you lucky enough to have thrown a code? removed controller and checked wiring (and gearbox hardware). Hello, all the best. The motor itself is physically the same as the lower-powered BBS01 250w / 350w, the only difference being the internals and controller.Bafang ModelBatteryPeak Power (Watts)BBS02 500w 36v36v (42.2v x 25A)1055wBBS02 500w 48v48v (54.4v x 18A)864wBBS02 500w 52v52v (58.8v x 18A)1058wBBS02 750w 48v48v (54.4v x 25A)1200wBBS02 750w 52v52v (58.8v x 25A)1470wThe voltage figures in brackets are for a fully-charged battery. Ive just been made aware of another relatively new brand of budget e-bike available in the EU. Hi my bike got soaked , what is the best thing to do its stopped completely. Sounds like the clutch. It may not display this or other websites correctly. Any thoughts? Below, Ive listed some of the causes of issues with the speed sensor. Did my controller overheat and shut down or is the battery dead? If the plastic connector has started to melt or the contact is black and damaged then replacing the connector is recommended. The issue that I am having is with the battery though, which I believe is an 48 Volt LG 16 amp hour lithium ion battery. Thread starter maxitwist; Start date Feb 24, 2022; Tags bafang bbs02 M. maxitwist New member. I'm not sure if this is one problem or two. Local time 10:35 PM Joined Feb 24, 2022 Messages 12 Points 3. The only solution to this problem is replacing the controller, preferably with one that has the newer mosfets on it which are a little more expensive at $100 but worth it. I never am. Hello, two days ago i built my first ebike with a Bafang bbs02 750w mid drive motor and a custom 13s5p battery with 50A cont BMS. A: I would personally stick with a 48v although there are benefits to using a 52v battery. Read our affiliate disclosure. Still waiting on the Hyper Fat from Juiced Bikes because I think that will be a beast! If you are in the UK and planning on using this on private land, that is fine, but if you are going to use it on public roads then you should be aware of the potential legal implications first. As you know, erratic stuff like this can be really tough to locate, because you can only trouble shoot when it's not working! Although, in some cases, this may be possible with a bit of ingenuity. The flip side to that, is Ive also had a fair share of issues. Having more than one drive unit is a great way to swap parts around and find out exactly what is wrong. Bafang motors are generally reliable. More than half the time when a controller goes bad its because these connectors have just come loose. Local time 10:35 PM Joined Feb 24, 2022 Messages 12 Points 3. That Is The Question, https://drive.google.com/drive/folders/1gqvb_eDRITrOKZJxmWF5GKFAhUGFl8xP?usp=sharing, https://drive.google.com/file/d/14dPRp7cNPxrz1yxDhNpF7BdkexE2Wre9/view?usp=sharing, https://electricbike.com/forum/forum/main-forum/diy-discussion/109869-bbs02-mid-drive-kit-basic-issues-fixed-on-rockhopper, https://lunacycle.com/parts/bafang-parts/bbshd-parts/bbshd-clutch/, A Hacker's Guide To Programming The BBS02 & BBSHD, Programming The BBS02 & BBSHD Without Frying Your Controller And Losing Your Sanity, I Void Warranties : Hacking The Bafang Ultra Max Mid-Drive Ebike Drive, Take A Wild Guess : Selecting The Best Front Chainring Size For A Mid-drive Ebike On The First Try, Kill Yourself 50% Faster With 2x The Power: E.R.T. This occurswhen your axle has twisted or bent. J. Bike is doing this.. please help. Nice thanks! Below are some key facts to consider. In this overview of, Read More Rubee X E-Bike Conversion Kit: Fricton-Drive ReinventedContinue, When you purchase through links in our articles we may earn a small commission. Lithium is today the top level of lifespan and this battery allows me to do 25 miles without problem. I'm at my wit's end with this problem that I'm having and hoping that somebody here can help me troubleshoot. Wait 5 minutes before starting off again, if youre on a steep 20% grade hill then I usually will just walk my bike to the top as the motor cools. BAFANG 750W Mid Drive Kit, BBS03 BBS02 1000W 750W 500W Ebike Conversion Motor Kits with LCD Display Electric Bike Conversion Kit . With a watt meter in line between the drive unit and the battery it becomes immediately obvious if the problem is with the drive unit or with the battery. With most decent electric road bikes starting at nearly 2000, you may be wondering if its possible to convert a road bike, Read More Convert a Road Bike to Electric: Flatten Those Hills!Continue, When you purchase through links in our articles we may earn a small commission. In so many ways Bafangs BBS02 750W drive unit is a dream come true. After several hundred hours of beating on the BBS02 with temp probes hooked up you will have a much better idea of what the drive units like and what they dont like. This leaves most BBS02 owners with the difficult task of troubleshooting and fixing their own technical problems. In so many ways Bafangs BBS02 750W drive unit is a dream come true. It's the 4 harness in this (awful) video at 1:09. I have a BBS02 that failed to start up a few weeks ago. Put the 18amp smooth thaottle program in it. Completely dead now. Sometimes that means a DIY fix and other times it can mean a recall, software update or part replacement by a dealer. With pedal assist I have seen 36 mph. The throttle works fine, the walk assist works fine, but when I pedal, there's nothing. We use cookies to ensure that we give you the best experience on our website. You would need to machine an eccentric shim for this to be possible. A: Yes, the BBS02 is suitable for off-road use but you will need to watch out for rocks and other potential hazards that could damage the exposed motor. I took the motor apart and checked the magnet and it is not broke or cracked anywhere that I can see, but there may be a small crack in the plastic its really hard to tell. https://electricbike.com/forum/forum/main-forum/diy-discussion/109869-bbs02-mid-drive-kit-basic-issues-fixed-on-rockhopper. Its a real beast of a motor and is reliable to boot! There are two lock nuts on the axle that tighten against each other with a rubber washer in between. More reliability, robust internals and bags of torque. I was looking at m2s bikes, specifically the all terrain 750 hard tail due to the nice price for the features you get. This may be the best forum troubleshooting guide. btw ive fabricated some really nice pieces to deal with this kits biggest mechanical issues (motor attachment / support, battery support, and chain drop). Then they suggested it may be a problem with the PAS magnet. It may result in complete loss of power or the malfunction of other components like the display or speed sensor. It's a Rambo Roamer and have been having a problem with the pedal assist. Since gates carbon belt drives pasta long time, this would seem to be Youll need a laptop or desktop PC, a USB programming lead and a copy of the free Bafang config tool. It is supposed to keep water from seeping into the drive unit but it gets mangled at the factory and neverreally works right anyway. I am facing the same problem. New unit, working great. Initially, it worked perfectly, then one day it decided to provide much less power than normal, AND for that power to fluctuate wildly despite only a steady pedal input. Menu. I have to occasionally tighten the crank arms on the bikes with BBS02 750W motors. I was just wondering if there are some settings in the bike computer that I should be checking, or if there could be a fuse somewhere that needs replacing? WebBafang Motor getting loose is a common problem among BBSHD/BBS02 riders. The only difference between these variants is the controller (36v / 48v) and firmware settings. Mar 30, 2023. The 1st time it happened I thought it might be a bearing too. In this article, Im going to be looking at 4 of the lightest electric bike conversion kits currently available. Hello! You can achieve the same power as a 48v battery but with a low current (amps). Maybe the rear break pad clicking on the disk, I dunno. any ideas on the cause and solution to this issue would be good. The power button doesn't do anything - makes no difference if it's plugged into the electrical harness or not. Known Issues & Problems with Bafang Products + Help, Solutions & Fixes. Although, I live in a hilly area and my rides are generally very hilly, though staying on the bike paths. I have two batteries, and the problem occurs with both of them on full charge, so I am thinking it isn't the battery. Ive recently fell in love with the XT60 (60 Amp load limit) and XT90 (90 Amps load limit) connectors and Ive been using them as my new standard on my packs and drive units. If, however, you want a motor thats going to amplify your effort and give you a bit of a workout at the same time. Nothing came up on the display and for all intents and purposes the bike was dead. Seven years after its launch, the Bafang BBS02B continues to be one of the best e-bike conversion kits available. I am having exactly the same problem. Also, in some cases, you may need to file down any burrs where the frame tubes meet the BB shell (internally). Q: Are mid-drive motors better than hub motors? For more information on the process, I have included a Bafang BBS02 installation manual in my resources section. cleaned all connections with spray contact cleaner. The questions and answers below have been gathered from the main, 2023 eBike Choices - WordPress Theme by Kadence WP. The crank-arms that ship with the unit are crap as well and Ive had two of them strip outon the pedal ends. You may need to remove the cable guide (if you have one) underneath the BB shell, as this might interfere with motor fitment. 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. A: If you are riding off-road, regularly riding up steep hills or towing a trailer a smaller chainring the better. All in all, I still love the Bafang BBS02, and in 2022 / 2023 its still one of the best e-bike conversion options available and highly recommended! If you have Facebook you can post there and link us here or Instagram. If youre having trouble with the Andersons power-poles then try high quality XT90 connectors purchased with pigtails and soldered onto your existing wires. Hi George, this is super late but do you still have that spare controller? display lights up, speedo works, battery full but no drive / power when i twist the throttle and no power assist when pedaling. My computer and thumb throttle made sure all connections were good and i have power to my motor case. Yesterday i removed my bbs02 (which was working fine) to grind back my BB to get a better chain line as i have a mighty mini on the way, put it back as normal, re-soldered the connections for the battery and did a quick test. Melted windings can frya motor, a hub motor is shown not the BBS02 unit, Just because the motor wont work does NOT mean the controller is dead. Very new Bafang 750W BBS02 with 48v battery. Be aware that your controller can be fried and you can still hook it up to your computer and access all the settings. Riding with a temp probe will help you learn what you can get away with, but as a rule of thumb just keep in a gear that keeps your pedaling cadence very fast when you are on a long steep hill. Visit the BAFANG Store. However they were completely out of stock with no idea on when replacements would be available. Unfortunately, as the PAS sensor is internal, it usually requires motor disassembly to fix. Just like Goldilocks and her bears your bearing tension has to be just right. I know the If the item description for the controller does not list the newer mosfets like this one from lunacycle, then you should ask the vendor what mosfets it has before you buy it. Mat995; Feb 3, 2023; Replies 0 Views 294. Make sure you replace it with the right one (R goes on the drive side, L on the non-drive side). Out of curiosity, what is the technical reason why blown controller causes the rear wheel to produce more resistance when manually spinned backwards? Starter Questions and Gear shifting problem Bafang BBS02. The sensor itself is about 25 dollars. I put it on my bike and everything works except for the pedal assist. I have been emailing the company and they have been trying to help but it is really slow emailing back and forth so I thought I would ask for suggestion here in hopes of getting the issue resolved so I can get a chance to use the bike before the snow gets too deep. Q: Is the Bafang BBS02 e-bike conversion kit waterproof? I do have a fat bike now with a Bafang 750w hub motor and Samsung. Bafang BBS02 48V 750W mid-drive PAS Problem. The power button doesn't do anything - makes no difference if it's plugged into the electrical harness or not. The higher your voltage is the worse the problem seems to get. Sure, if you can stump up an extra couple of hundred, then Id seriously consider the BBSHD. If you want to be through before you spring for a new controller than you can test your BBS02will a different display and\or throttle but in all my time reading about failures on the BBS02 Ive heard of countless controller failures and very few throttle failures (I think only one). Replacement Bafang controllers are available from Amazon. Yesterday was my first battery charging, everything went smoothly and with no heating on any parts. If you get an error 30 code you probably have a bad C965 display. M. Bafanf bbso2b Could this be an issue with the settings on the controller or the computer on the bike?? I'm not sure if this is one problem or two. I m very disappointed because he motors stops working exactly when I need it. I tighten my Bafang crank arms before every ride. 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. Then, when I charge the battery, it only charges for an hour and then shows as full. Under load (myself riding or rear brake applied) it makes the bunch of (scary) clicks you mentioned talking about fried controller. powered up unit (still disassembled) and wiggle tested all connectors with throttle applied. Thread starter Leigh_M; Start date Nov 26, 2021; L. Leigh_M New Member. But thats not where the story ends. Please watch my videos and try to understand. If your connector looks like this it might be time for a replacement. But, like any mass-produced electrical item, problems do occur from time to time. Not always lit. Out of stock at Lunacycle, try California ebikes. If your motor stops working and it has been under load the first thing you should do is put your nose right next to the unit and take a good long sniff. You will pay more, but returning a faulty motor is usually more straightforward. This is less of a problem with the newer mosfets, but it can still happen. The problem is this. Can you elaborate on what the problems would be with using a bafang mid motor with such a combination. Bafang motors are generally reliable. Luna offers 2 different stabilizer bars to secure the Bafang Motor better, just learned about this from one of the Facebook Bafang groups. Mine looses power over big bumps on the rear suspension. You must log in or register to reply here. I put it on my bike and everything works except for the pedal assist. I have listed some of the possible causes below.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'ebikechoices_com-small-square-1','ezslot_24',177,'0','0'])};__ez_fad_position('div-gpt-ad-ebikechoices_com-small-square-1-0'); A hall sensor provides rotor position feedback to the controller.
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