Crossroads; Mar 30, 2023; Maintenance and Repairs; Replies 12 Views 508. I have no idea what a "hall" sensor is. Hi Karl, great post! When you purchase through links in our articles we may earn a small commission. In this article, Im going to be looking at 4 of the lightest electric bike conversion kits currently available. A: Most re-sellers offer a 12-month warranty with the Bafang BBS02, but warranty claims can often be complicated and not straightforward. Visit the BAFANG Store. Can you elaborate on what the problems would be with using a bafang mid motor with such a combination. Many good reviews on M2S site. They are always coming loose. Below are some key facts to consider. Installing the BBS02 controller. 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. 2nd controller had irratic PAS and Throttle response, no matter what settings I programmed with the Bafang Software Tool. The sensors themselves are very cheap and easy to get. My computer and thumb throttle made sure all connections were good and i have power to my motor case. To date, this feature is only available on their M models which require a special frame for fitment. 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 bafang cranks are soft ally and deform on the steel square. Its not the brake cut offs Any ideas? Although, in some cases, this may be possible with a bit of ingenuity. https://lunacycle.com/parts/?sort=featured&page=2. The brake handle does disconect power to the motor as it should. This is actually a problem Ive had more than once and it is a little tricky to fix. I checked the connections when I removed the motor everything was tight and there was no sign of pinched wires. Nov 26, 2021 #1 Recently purchased my first ebike. I have installed both the BBS02 and BBSHD on carbon fibre frames before without any long-term issues. Is it something I did or unrelated to my recent tampering? Theres no easy way around this, and I would stick with 135 mm-142 mm rear hub bikes. Hi dont know if any one can help got a new bafang mid drive cuts out straight away lift back wheel in the air seems to work OK what should I be looking at thanks. You will pay more, but returning a faulty motor is usually more straightforward. Q: Is the Bafang BBS02 e-bike conversion kit waterproof? Bafang says the problem is in the bms module thatis not communicating with motor because of WebBafang Motor getting loose is a common problem among BBSHD/BBS02 riders. I would love to see your designs. Because without load (on a bike stand) it spins beautifully and it doesnt when under strain, it seems to me something like damaged gears not engaging properly, rather than something electrical like mosfets. Bafang motors are generally reliable. I'm at my wit's end with this problem that I'm having and hoping that somebody here can help me troubleshoot. I go to change out my brake system to disc. I tighten my Bafang crank arms before every ride. Is there a way to fix this? I purchased a 20 amp hour 48v. More reliability, robust internals and bags of torque. Nov 26, 2021 #1 Recently purchased my first ebike. 36-volt or 48-volt (52v Battery Optional), 750w nominal power with 1200w peak power (48v battery), Compatible with most frames (BSA threaded bottom bracket), Can be programmed with an optional USB cable and software. The problem is this. 04-09-2016, 09:04 PM. Read our affiliate disclosure. But, like any mass-produced electrical item, problems do occur from time to time. The software may believe you have either your brakes engaged or are actively shifting(if you have unit with shift sensor). Bafang BBS02 Common Problems. display lights up, speedo works, battery full but no drive / power when i twist the throttle and no power assist when pedaling. I have done Bafang conversions which are still going strong after 4 years and over 5000 miles. This leaves most BBS02 owners with the difficult task of troubleshooting and fixing their own technical problems. i posted the mods below. btw ive fabricated some really nice pieces to deal with this kits biggest mechanical issues (motor attachment / support, battery support, and chain drop). I have to occasionally tighten the crank arms on the bikes with BBS02 750W motors. 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. Like 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. The questions and answers below have been gathered from the main, 2023 eBike Choices - WordPress Theme by Kadence WP. Read our affiliate disclosure. 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. The latest Bafang BBS02B is available in three different configurations: 36v 500w / 48v 500w and 48v 750w. Sure, if you can stump up an extra couple of hundred, then Id seriously consider the BBSHD. I put it on my bike and everything works except for the pedal assist. I bought a second hand Bafang BBS02, 750w kit. It seams totally random. Below, I have listed the 5 best Bafang displays suitable for the BBS02B. Am I wrong? It's a Rambo Roamer and have been having a problem with the pedal assist. 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. Lithium is today the top level of lifespan and this battery allows me to do 25 miles without problem. The flip side to that, is Ive also had a fair share of issues. After frustration, notice the brake hozzle on rear brake sitting outside so tucked it back in. 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. The Bafang BBS02 conversion kit is a really popular kit among DIY ebike builders. Most users report a top-assisted speed of between 28-32 mph. The company's 1st suggestion was to unplug the electric break sensors. I have done Bafang conversions which are still going strong after 4 years and over 5000 miles. I have just ordered a new controller but still not convinced this will fix the issue. Electric Bike Throttle and Pedal Assist not working, Display reporting inaccurate speed, gradually decreases. 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. It may not display this or other websites correctly. Read my BBS02 vs BBSHD article. If you pull the crankarms back and forth with perpendicular force to the bike and they dont move but the chainring does wiggle when you push and pull it perpendicular to the bike then the Phillips screws that hold the freewheel onhave loosened up. If youre not familiar with the e-bike law in your country, its advisable to check beforehand. Any other mid-drive ebike kit is going to take a lot more time and energy toinstall and get working properly. If the wattmeter stays on when power is applied then the battery is probably fineand the problem is on the BBS02 side. It was workings wonderfully these two days and ive drove more than 40kms without any problems whatsoever. Ann M. Apr 19, 2017; 2. Million thanks. It was workings wonderfully these two days and ive drove more than 40kms without any problems whatsoever. Out of stock at Lunacycle, try California ebikes. No ebike is perfect, this is a thread dedicated to sharing known issues or problems with electric motors from Bafang as well as any help and solutions you know of. Nothing came up on the display and for all intents and purposes the bike was dead. Yesterday was my first battery charging, everything went smoothly and with no heating on any parts. 08-21-2021, 03:56 AM. Please watch my videos and try to understand. 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 USB port is not putting out power for my phone. Most of my BBS02 units have a temp probe installed on them, the instructions for doing that are here. The most common problem is that the magnet has slid downthe spoke and the speedo is no longer working. The hardest part would be to remove the bottom bracket bearing. 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. 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. 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. Seven years after its launch, the Bafang BBS02B continues to be one of the best e-bike conversion kits available. Maybe the rear break pad clicking on the disk, I dunno. I put it on my bike and everything works except for the pedal assist. https://reactual.com/outdoor-equipment-2/power-sources/best-18650-batteries.html, Known Issues & Problems with Maxfoot Products + Help, Solutions & Fixes, Known Issues & Problems with Fuji Products + Help, Solutions & Fixes, Known Issues & Problems with Alizeti Products + Help, Solutions & Fixes, Known Issues & Problems with Tempo Products + Help, Solutions & Fixes, Known Issues & Problems with Wildsyde Products + Help, Solutions & Fixes. We use cookies to ensure that we give you the best experience on our website. I have to occasionally tighten the crank arms on the bikes with BBS02 750W motors. Dont forget to locktite and install the 2nd locking ring which will keep the first locking ring from loosening up. If you have a 68mm BB BBS02 then most likely the main locking nut on the drive unit has loosened up. Change). Any thoughts? If you want an electric bike system thats going to take you up the steepest hill and push you along at a swift pace without fuss, then the BBS02 is for you. 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. Almost every drive unit I have ever taken apart the rubber washer is ripped or shredded. My pedal assist is acting Crazy! After learning that the problem would more than likely be caused by a controller failure, I sent for and replaced the A bike converted to electric using a Bafang BBS02B, may not be legal to use on public roads in some countries. J. Bike is doing this.. please help. No sounds, no noise, no power, nothing. Hill climbing is its forte the BBS02 will eat 25% hills for breakfast! 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 get an error 30 code you probably have a bad C965 display. 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. Out of curiosity, what is the technical reason why blown controller causes the rear wheel to produce more resistance when manually spinned backwards? These measure 68 mm-73 mm across the frame and have an internal diameter of approximately 33.5mm. I'm curious how the LG 16ah battery rates against the Panasonic, Samsung etc. 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. All was good. In this extensive BBS02 review, you will get to know everything about it. Lots of modern mountain bikes (and some adventure bikes) have boost rear hub spacing (148mm) to accommodate the wider tyres commonly used. If your bike has a press-fit (see below) or another type of BB, then I would seriously consider a compatible donor bike, as it will make installation a lot more straightforward. If you grab the rear wheel and spin it backwards, if theres significant resistance, this can indicate a blown controller. Nothing. Sensor should blink when the magnet passes. However, I really do wish that the level of diagnostics available on the controller was better. 08-21-2021, 03:56 AM. Oops clarification: it is a rear geared hub motor. All of these are very easily determinable with just programming. If your speedo magnet is gone the BBS02 still works just fine and if you want to shift PAS levels up or down just tap the ebrake and the 21 error will disappear and you can move up and down PAS levels for a few seconds before the error appearsagain. You can also set pedal assist speed and current for each possible assist level (up to nine). It happens when you are taking your BBS02 off drops, you can try to replace it or you can do what I do and just keep your opposite foot forward on that bike when you ride without pedaling. I am charging it off the bike. This depends on your local e-bike laws. Visit the BAFANG Store. Hi my bike got soaked , what is the best thing to do its stopped completely. Now, I am a bit confused. https://lunacycle.com/parts/bafang-parts/bbshd-parts/bbshd-clutch/. We use cookies to ensure that we give you the best experience on our website. More than half the time when a controller goes bad its because these connectors have just come loose. Mar 30, 2023. Q: How do I choose the right chainring size for my Bafang BBS02 e-bike conversion kit? 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. 08-21-2021, 03:56 AM. enjoy. 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.Any other mid-drive ebike kit is going to take a lot more time and energy to install and get working A: No, they have different performance characteristics and may suit certain riding applications better. For a better experience, please enable JavaScript in your browser before proceeding. I'm not sure if this is one problem or two. You can achieve the same power as a 48v battery but with a low current (amps). The throttle works fine, the walk assist works fine, but when I pedal, there's nothing. 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! Below, Ive listed some of the causes of issues with the speed sensor. When the mosfets fail there is no way to tell it from error codes or the programming interface. The flip side to that, is Ive also had a fair share of issues. You should have about 5mm of clearance between the magnet and the speedo crosshairs area. Bafang BBS02 48V 750W mid-drive PAS Problem. If you can roll the tire backwards with the motor running you will hear grinding and feel the motor skipping through the wheel. You may get an error code 08 on your display, and it is usually accompanied by a loss of power and a grumbling sound. I'm at my wit's end with this problem that I'm having and hoping that somebody here can help me troubleshoot. Like The brake handle does disconect power to the motor as it should. Hello, hope all is good. The best way to see if they are bent is to put them on a totally flat table top and look at them from the side. Could this be an issue with the settings on the controller or the computer on the bike?? The USB port is not putting out power for my phone. The cheapest place to buy is usually Aliexpress. Visit the BAFANG Store. Apr 13, 2023. I know the Apr 13, 2023. I have tried to change the setting but with no results. Bafang BBS02 750W fluctuating power problem. Mine is the same. If you need a motor for real heavy-duty applications like carrying cargo or trailers, then it would be worth paying the extra and buying a BBSHD. 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. Just throw them away and put on new ones. I am facing the same problem. Nov 22, 2021. tomjasz. It may be accompanied by an error code (see below). Providing your bike is compatible, this should be fairly straightforward. My favorite throttle, a right hand thumb mounted on the left side.

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