Often if your primary gear peanut butters the bike will not roll backwards without a huge amount of resistance. Reprogramming your Bafang mid-drive system can improve the usability and performance of your ebike. The first one the motor would not stop after I stop pedaling, at first it was an intermittent issue and then it happens all the time. 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. You will need to remove the axle and then remove these large Phillips screws (they are replaced with the much preferred hex screws on the Bixtrix 100mm drive unit) apply locktite and replace the screws torquing them down as hard as you possibly can without stripping them. My bike mechanic plugged it in and it works. Turn the key to the ignition on, but engine … It sends a signal to the controller to cut motor power while shifting gears. Too much torque on the lock nuts shreds the rubber washer. Signal Output: Pulse duration 0.5s. Please let me know if you have found a workaround. Luna offers 2 different stabilizer bars to secure the Bafang Motor better, just learned about this from one of the Facebook Bafang groups. The first is known as the input shaft speed (ISS) sensor. Shifting into a higher gear will not generally create much of a problem, but sometimes shifting into a lower gear will. The higher your voltage is the worse the problem seems to get. Symptoms of a bad or failing engine knock sensor include slow acceleration, reduced fuel economy, and the Check Engine Light turning on. Once the problem has been fixed, the mechanic will reset the error codes. https://lunacycle.com/parts/?sort=featured&page=2. Ebike Repair Customer Reviews ... 1 Comment With Bafang now shipping controllers with a built-in gear sensor cable and gear sensors now available from multiple U.S. resellers we now have a better option to consider to protect our drive train while shifting. 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. It also can indicate an increase in tailpipe emissions surpassing acceptable limits for environmental contaminants from motor vehicles. Or if the brake switch was closed. My BBS02B works really fine on stand (no load) both on PAS and throttle. It could also be a failed throttle where the hall sensor has broken loose and is activating without the throttle being activated. 1.8FUN 48v 1000w mid drive motor BBSHD bafang bbs motor 2.Brake lever 3. Please watch my videos and try to understand. display lights up, speedo works, battery full… but no drive / power when i twist the “throttle” and no power assist when pedaling. ( Log Out /  The magnet must be installed within in 1-2mm of the Speed Sensor with the smooth side of the magnet facing the Speed Sensor. After registering data, the two transmission speed sensors, also commonly referred to as a vehicle speed sensors (VSS), send data to the powertrain control module (PCM), which compares these two inputs and calculates which gear the transmission should engage for efficient driving. Was on time, was able to replace my brake pad on my range rover in a jiffy. Make sure that the Speed Sensor … 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. This leaves most BBS02 owners with the difficult task of troubleshooting and fixing their own technical problems. I have tried to change the setting but with no results. Download Gear Sensor … I am facing the same problem. © 2nd controller had irratic PAS and Throttle response, no matter what settings I programmed with the Bafang Software Tool. Check the connectors between the battery and the motor. Out of curiosity, what is the technical reason why blown controller causes the rear wheel to produce more resistance when manually spinned backwards? Line Length: 24CM. Crankarms don’t line up in a straight line when you look at the bike from the side. Unfortunately, without additional detail as to the specific model of your vehicle, it may be difficult to diagnose without physically inspecting the vehicle.... First off, the P0174 code is for the system to lean, the P1860 code is for the TCC solenoid electrical system. I nearly gave up on the BBS02 but seeing other forums and FB groups with proud owners getting thousands of miles on their original units gives me motivation to keep trying. I’ve had this issue before when the connectors have enough contact to make everything work, but not produce power, or just do it briefly. One side note: If you have a BBS02 and it has a dedicated gear sensor port on the motor, the install would be more complicated, but you'll apparently get less lag when shifting … A magnet is mounted on a rear spoke and the sensor … PAS level 7-9 are plenty strong not to use throttle too much. BBS02 throttles can also fail as can the BBS02 displays if you smash them on the pavement, but it is not that common of an occurrence. If you are unlucky enough to have this happen then most likely the nylon gear has failed. This document will guide you down the often times confusing path of figuring out why things aren’t working right and hopefully get you pointed in the right direction to get it fixed. PAS sensor integrated 5.EB-BUS water-proof cable 6.Chain wheel + Chain Cover 7.Left Crank + Right Crank 8.Thumb Throttle 9.Nuts 10. However they were completely out of stock with no idea on when replacements would be available. Connector: 3 pin yellow color. whats the best way to share these designs? If your motor does not have this cable you can hook the gear sensor up to a brake sensor … I am having exactly the same problem. If you can’t turn the axle with your fingers pretty easily when the axle is installed then you need to take BOTH lock nuts off and start all over again. I had 2 controllers act in strange ways. Melted windings can fry a motor, a hub motor is shown not the BBS02 unit, Just because the motor won’t work does NOT mean the controller is dead. It could also be bad phase wires between the controller and motor. The acceleration issue could be due to many different items... Get a fair & transparent quote instantly before booking. The only way to know for sure is to remove the drive unit and check. Is it Safe to Drive With a Faulty Knock Sensor. If you want to be through before you spring for a new controller than you can test your BBS02 will a different display and\or throttle but in all my time reading about failures on the BBS02 I’ve heard of countless controller failures and very few throttle failures (I think only one). Throw them away and buy another one. The bike was working perfectly one day dead the next. I’ve also bent the actual alloy chainrings several times too. Wait 5 minutes before starting off again, if you’re on a steep 20% grade hill then I usually will just walk my bike to the top as the motor cools. it’s as though a brake switch was closed, but i have none installed. So far so good. It's also common that a problem with these sensors can impact the shift timing, extending the interval between transmission shifts. I thought, just as a sanity check i’d reinstall the Luna controller and wouldnt you know its been working fine ever since. If you pull the crankarms back and forth with perpendicular force to the bike and they don’t move but the chainring does wiggle when you push and pull it perpendicular to the bike then the Phillips screws that hold the freewheel on have loosened up. I definitely recommend installing the Bafang Gear Shift Sensor potentially if you exceed 1600w on the rear wheel, you will significantly reduce the life of your rear derailleur, cassette, and chain. In all honesty I’ve never seen any of these other codes even though I’ve had plenty of low voltage packs and overheated controllers shutting down on me. If either of these two sensors … Melted motor windings can lead to a motor that doesn’t power up at all and acts nearly identically to burned out mosfets on the controller. 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. It could also be a problem with the internal clutch catching. I therefore bought an ebay controller, and whollah it worked again. Instructions for programming your controller are here and the programming guide is here. An automatic transmission is hydraulically controlled and designed to shift smoothly. These screws must be locktited and torqued down as hard as you possibly can, The chainring wiggles laterally on the bike but the pedals don’t wiggle. In so many ways Bafang’s BBS02 750W drive unit is a dream come true. How Long Does an Electronic Spark Control Last? Variable Gear Shift Sensor Bafang 8Fun BBS01 BBS02 BBSHD Mid-Drive Motor Kits From £29.95 Bafang 8Fun Programming USB to TTL Cable Lead for BBS01 BBS02 BBSHD This occurs when your axle has twisted or bent. When replacing the axle read the paragraph below on getting the axle tension right. Once the problem has been diagnosed, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. BAFANG Mid-Drive Motor Gear Sensor Bafang 8Fun Electric Bike Shift Sensor BAFANG Shift Sensor eBike Gear Sensor BBS Only: Amazon.com.au: Sports, Fitness & Outdoors Sorry, your blog cannot share posts by email. 1330 E Franklin Ave. El Segundo, CA 90245 United States. Bafang had a run of BBSHDs with a large number of failing displays during early 2016. Fixed. Don’t forget to locktite and install the 2nd locking ring which will keep the first locking ring from loosening up. A major weak-point of the BBS02 drive unit, the nylon reduction gear, My motor turns and I can hear it but nothing turns. My advice when you buy a BBS02 drive unit is to buy two instead. Up Sells. Buy sensor sensor - Shift Sensor for Bafang E-Bike BBS01 BBS02 BBSHD Mid Drive Motor Gear Sensor Three Core Waterproof Connector 24CM Cable online on Amazon.ae at best prices. I just cant put any human watts through the pedals/cranks, they spin freely. The heavy … You could also create a commuter bike and a trail riding bike. The statements expressed above are only for informational purposes and should be independently verified. When you connect a high power battery it sparks, even if your pack is equipped with a spark arrestor. LEARN MORE. It mounts inline with the shifter cable and detects the cable movement. This may cause the transmission to shift roughly or more quickly than normal. The throttle also still works. The The job of the electronic spark control is to control the engine timing. If you have Facebook you can post there and link us here or Instagram. It may be due to faulty transmission speed sensors. https://electricbike.com/forum/forum/main-forum/diy-discussion/109869-bbs02-mid-drive-kit-basic-issues-fixed-on-rockhopper, 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 no evidence of water, grime, chafing, or damage. As described, this sensor is used to monitor the speed of the transmission’s input shaft. 800-881-4471 If you want to keep your primary reduction gear from failing then I recommend that you put a smaller chainring on it which greatly reduces the load on this gear. They fry alignment or experiences electrical issues, it can produce up 160N.m! Indicate an increase in tailpipe emissions surpassing acceptable limits for environmental contaminants from motor.. Ways Bafang ’ s as though a brake switch was closed, but motor. 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