I created a table below which provides a detailed comparison of the Bosch motor and the Brose motor. Brose Drive S Mag | Bosch Performance Line CX | FAZUA Ride 50 Evation Firmware 2.0 | SACHS RS | Yamaha PW-X2 | Shimano STEPS E8000 | Shimano EP8 | TQ HPR 120S | Specialized . In this video, Chris takes a look at the top offenders.. What is the Difference Between Pedal Assist and Throttle? - YouTube There has been talk about rattle from the new Bosch motor. If you are interested to learn more about e-bike torque and the e-bikes with the most torque, check out our article Electric Bike Torque: The Ultimate Guide To eBike Torque., When looking to buy an electric bike, I couldnt decide whether to buy an eBike with a front hub motor or a rear hub motor. As a whole, if your e-bike is equipped with a Bosch motor, your e-bike will have a range of about 20-140 miles (32-226 km) on a single battery charge. Sounds like chain noise but at this point I dont think it is. It was a Bulls MTB. Anyone know how to fix this? Well, the first type of noise is mechanical noise. It happens when motor is on and off. Also, the quality of the chain contributes greatly to the noise. The Shuttle SL is Pivot's lightweight . Thanks. As a whole, Bosch motors are not interchangeable. But, of course, nothing is perfect. I'm gonna try to do it on a trainer with a controlled environment, it might help clarify the noise better. Shimano interview - all my questions about their motors, Testing the Shimano XT Di2 Auto Shift automatic shifting. Purion it has a clear display with 4 mods: Turbo, eMTB, Tour and Eco for a support during your ride. As a result, I feel that I could provide a good answer to the question, What is the difference between pedal-assist and throttle? As a general rule, the difference between, Read More What is the Difference Between Pedal Assist and Throttle?Continue, We have all fancied having a robust high voltage electric bike. To me nothing sounds abnormal. Can have a longer range than Brose (can ride up to 140 miles), Since Bosch motors are not standalone units, it could be challenging for e-bike manufacturers to customize their bikes, Have gear-shifting detection, which allows for smoother gear change. Bosch advertises 75nm of torque whereas the BBS02 advertises 120nm. An e-bike paired with Bosch Active Line motor and a Bosch 1250Wh battery can travel up to 140 miles. This means it will provide you with the assistance you need when you need it. Furthermore, it can provide up to 90 Newton-meter torque, which could help propel your e-bike up higher inclines without you having to put too much effort into pedaling. Are you sure your Allant has the Bosch Gen2 speed motor and not the Gen 4 Bosch? Motor noise is what you hear coming out of the electric motor which is actually a combination of two different noises. Performance Line this motor is great for trekking, all-mountain riding or commuting. My 1000w motor journey and fear mongering by users of the forum! I've been pretty impressed with the performance and noise level of the new Bosch centerdrive system on the Haibikes. Don't worry if this has happened on your eBike. Jun 13, 2022. Mar 24, 2019 13 5. Activate motor support by attaching the display as a key. We cant help but wonder which performs the best24V, 36V, 48V, or 52 Volt electric bike? Happened on many of my bikes over the years. Today, Netflix is found . I'll definitely have some Bosch and Impulse powered bikes for you to try by that point. So, how can one find an E-bike that is not noisy? Off-Road and On-Road. E-Bike motor torque and max power at a glance. . Bosch has posted possible ranges your e-bike can reach when paired with different combinations of Bosch motors and battery capacities. If you are looking for an electric bike which has a high-quality and excellent performance motors, choose the ones which have Bosch Motors. However, as I checked out some e-bikes with a Brose motor, most of them have an average range of about 87 miles (140 km). It happens when coasting or descending on uneven surfaces. Remind me if I forget to do this as we have been crazy busy lately. So, thats a good sign and it shows that Brose has continuously worked to improve their motors. That is because they are under excessive load and the nylon gears can break or melt. Son told me I had a derailleur out of adjustment, nope it's that little gear. It can also be fitted with internal shifts and backpedal brakes. For a better experience, please enable JavaScript in your browser before proceeding. Because of the built-in power assistant and fluid shifts, your ride will be smooth. This contact will not be very smooth, especially during the process of loading or unloading gears. CLICKING SOUND FROM MOTOR - WHEN PEDALLING AND COASTING. The battery is long-life and has an ergonomic design. Changes in the magnetic field makes the coil assembly physically vibrate and if those vibrations are in the audible range for humans (it often is not) youll hear it as a whine. Mar 24, 2019 #1 I purchased two new Gazelle bikes for me and my wife. Chain Noise? Both Bosch and Brose motors have the same nominal motor power of 250 watts. With failing bearings the noise tends to get extremely high pitched and gets incredibly annoying. Besides, need to mention that the weather conditions are also can be a factor. Reliable Bosch motor provides gentle ride in the city. I've noticed this on my Trek Powerfly 7. Riding an E-bike is a truly exceptional and interesting activity. It gives you a better opportunity to go out of the city into the mountains. With good conditions, Performance Line Cruise in the mix, battery can take the tours up to 55 miles. I expect the dealer will check all the things you suggested anyway. You must log in or register to reply here. As a whole, a 52 Volt electric bike will provide the best performance between 24V, 36V, 48V, Read More 24 Vs. 36 Vs. 48 Vs. 52 Volt Electric Bike (The Clear Winner)Continue. So I took the initiative to make a side-by-side comparison of these two motors across several aspects, such as their initial cost, power, torque, maintenance cost, running cost, and reliability. The Bosch motors with the highest torque are the Performance Line CX, Cargo Line, and Performance Line Speed. Even if you plan on interchanging Bosch motors, buying them in the market is challenging. I think it would be helpful to have though. In most cases, servicing your e-bike may cost about $150. Only issue is what seems like chain noise. I have found that the Bafang M620 meets most of my needs. I'm sure there bad motors out there. the e-bike motor specialists uk . I apologize, I did not write an article based on this this interview Auotmatic shifting, on an emtb, who asked for that? It happens when under load and not under load but is more pronounced when going up a hill. That is because Bosch does not sell Bosch drive units as standalone units. Yes when i take the chain off it still makes the same noise. that would be nice. JavaScript is disabled. It combines both the pedal-assisted and the motor part of the E-bike. My wife has the same bike and hers does not make any noise. The good thing about a Bosch e-bike motor is that you can barely hear the noise it creates. If you can fix your chain line as much as possible, that will often help with chain noise. It sounds like cable slapping inside he frames but is infact the motor. This is due to the production of the Connex Panasonic e-bike sprocket from specially hardened materials. When he pushes down on the pedals there is a creaking noise. Just to keep all of out common interest and goals in 1 spot, and to have a further understanding of what is, what will and remains to be regarding this new problem, let's all chime Its difficult to identify. It depends on various different factors, such as battery life, what type of motor do you have, also where are you riding your bike in the city or the mountains. Like any other e-bike component, the e-bike motor also wears and tears naturally. Brose is one of the top-leading e-bike motor manufacturers globally. As a whole, the most reliable e-bike motor is the Bosch Performance Line CX. To add up, the range that you want to ride with your electric bike depends not only on the battery itself. Thus, diagnosing issues is much easier. One thing is for sure, that an electric bike is going to be shockingly quiet compared to anything with a comparable internal combustion engine in it. There is a lot of ways that this noise can be decreased such as. If that's what it is I'll get used to it, just seems off to me. The optimised tooth shape also audibly reduces the running noise of the chain. Copyright 2012-2022 EBR Electric Bike Review, Inc. Also operating under the name EBR. Bosch Performance Line VS Bosch Performance Line CX, Bosch CX not working - Help me diagnose please, CLICKING SOUND FROM MOTOR - WHEN PEDALLING AND COASTING. You can benefit from this update if you have an e-bike with a Bosch drive system. In addition, a Brose motor provides 250 watts of continuous power but could provide maximum assistance of up to 410%. More precisely, the lack of e-bike noise they provide. It has an electric motor and it makes the sound an electric motor makes. Feel at one with nature on long bike rides with a motor that's barely audible. I agree with you about noise, the brose I rode was near-silent. Kiox it is new on-board computer, which gives all the information that you need during your sporty and mountain rides. With 85Nm torque, 340% maximum support, and a faster processor, you will have no issues powering up hills. I believe it's inherent to the design. I will probably wait till I get the Focus Impulse bikes in later this month and add that into the mix as well. The best thing Ive found for reducing gear noise is a liberal greasing. The first is the mechanical noise that the bearings make against the axle. Furthermore, the reduction in the noise Bosch e-bike motor makes does not significantly affect its overall performance and efficiency. The important thing is the intuitive and efficient way that the system works in comparison to some of the cruder hub based motors. It is definitely in the top 3 things that make one E-bike a great E-bike. Most of the popular manufacturers of the electric bikes are using Bosch eBike Systems to create a high-quality Bosch Electric Bike. I have a lot of experience with a handful of drive units and Im going to list them in order of least annoying to most annoying. Ebike Motor Centre (Performance Line Bearings) 4.28K subscribers 158K views 4 years ago If we have helped, or you appreciate what. It outputs an incredible 85Nm torque and up to 340% of assistance. You are using an out of date browser. [wpsm_comparison_table id=14 class=center-table-align]. Here is the video link : New Bosch Performance Line CX Gen2 (BDU 280P CX) 75Nm, Bosch Performance Line VS Bosch Performance Line CX. Bobby. But I think having the Neo and a Stromer would make sense as well. We combine high-quality hardware components with innovative digital features to protect you and your eBike even better. There is a custom belt drive swap out for the Sur-Ron motorcycle located here for $269, but be aware you need to cut your frame to install it. When I tried out the Bosch (2013 motor) and Panasonic (26v) I found the Bosch slightly noisier than the Impulse and the Panasonic slightly quieter. Servicing your Bosch or Brose motor may cost around $150. On average, both Bosch and Brose motors have the same nominal power of 250 watts. #2, backpedaling on a Bosch Gen 4 has a ratcheting sound in the cranks, which was audible there too. Also, this motor can be a great option for the MTB electric bike. Motors, rechargeable batteries, displays and apps. You are using an out of date browser. suggested. Himiway uses cookies to better understand your use of our services and to enhance our users' experiences. Motor noise, gear noise and chain noise. It may be a warranty issue, not sure yet, but betting it will be a normal wear and tear type deal (?). It went away and has been quiet ever since. Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on Reddit (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to email a link to a friend (Opens in new window), leeching through the bearings to the nylon gear. Also, Performance Line motors are available in five riding modes for sporty dynamic rides. It can help keep your eBike free of rust. Ive ridden every single ebike I can get my hands on in the last 5 years. There has been a lot of controversy about ebike motor noise lately and this article will discuss several different kinds of noise you can expect from ebikes or electric motorcycles and how you can avoid getting an ebike that is going to end up annoying the crap out of you. But, of course, your motor may last a longer or shorter duration depending on how you use and maintain your e-bike motor. Thus, interchanging Bosch drive units is not possible. And that comes from the battery and . Most times, the primary factor that will determine your e-bikes range is your battery. I thought it was the battery rattling but have isolated the noise to be when the motor is not under any load and the bike is freewheeling over a bump. The current Performance Line CX is designed with high power density and thermal stability as well as a highly efficient gearing mechanism and incredibly smooth-running gears. Let them figure out what it is and replace it under warranty. Enter your email address to subscribe to this blog and receive notifications of new posts by email. I've now got a Brose powered Bulls E-MTB and I would rate it as silent. I thought maybe something was loose inside the case and someone would recognize it, but maybe it actually is chain noise from the additional sprocket and guide. Just a note to everyone thinking about Bosch Gen 4 powered bikes. Also, Active Line is available with a backpedal function. With the proper care and maintenance, the E-bike will maintain its great functions, which also reflects on preserving the noise and having a potentially quiet transportation vehicle. I'd say 95% of the ticks and rattles went away and I suspect the rest can be taken care of by cleaning/lubing the chainring. I as well as few others have begun to experience an issue with the Allant 9.9S making odd noises from the motor. You can take a look at the video below for more information on cleaning and maintaining your e-bike motor. As a whole, both Bosch and Brose eBike motors are reliable if properly maintained. He came to me and asked me which of the two would be more powerful. PowerTube 500 this battery can be integrated in the bike frame. Bosch eBike Systems and Tektro announce ABS braking partnership - Gear - BikeBiz Liked by Lars Lentz. Opting for the hub-drive motor option, FSA's complete e-bike system weighs 3.98kg. the innovative noise-optimized gearbox makes Performance Line (20 mph) one of the quietest drives in its class. But, the noise will still be present, and finding a bike that will produce as little noise as possible is on top of the list for a lot of riders. Cleaned and fresh lubed again and it's still loud. Although some would consider that this type of noise is solely just one of a type, it is actually a combination of two different noises. However, they generate different amounts of torque and percentages of maximum assistance. It might be heat related as the noise starts sooner on a hot day. Solved motor-related noise and vibration issues as NVH engineer. As a general rule, Brose e-bike motors are good. Copyright 2012-2022 EBR Electric Bike Review, Inc. Also operating under the name EBR. How common are rattles, buzzes, and other noises on ebikes? JavaScript is disabled. At about 400 miles I started getting a clicking noise that starts after 6-9 miles of riding (recording attached). Also, Active Line is available with a backpedal function. Theyve been available in the market for over seven years and have proven their motors reliability. One sounded broken so that may be the noise you're referring to. Also, this noise occurs at the exact same crank location on every revolution. How bad is. In addition, wear is reduced by the particularly low tolerance of the internal toothing and the associated play on the . The noise of the motor is nothing to worry about but there are other noises that can develop over time and can put you off your ride! But guess what? Electric bike with this motor can go up to 15 mph. Also powerpack 300 can be built on rear rack as well. Well, I posted in late July that the clicking sound was going away. Brose is known for creating relatively quiet and powerful motors. If that is bent inwards the chain could be rubbing on it. Is this noise is inherent in this system? That is because e-bike motors will work as long as the battery has power and is turned on. Then, lift the frame so that the back wheel can spin freely. Since the Performance Line CX motor has a high-speed processor, it reacts quickly to your riding needs. Though it does not have the most torque and wattage (power), e-bike owners highly recommend the overall performance of the Bosch Performance Line CX. This comes due to the rotation speed motors, which are usually faster about 10-50 times than their ICE. Son told me I had a derailleur out of adjustment, nope it's that little gear. Subscribe: http://embn.me/subscribenowOur shop: https://embn.me/tmFollow us on Instagram or Facebook! In general, newly bought Bosch and Brose e-bike motors are reliable. Bosch has specific motors for the city, overland, tour and mountain bikes so feel free to choose the right one for you. Bosch cx resistance while pedaling backwards. Ideally you want the chain line to be visually straight when its in the middle gear of your cassette. If you are looking for an excellent motor, choosing a Brose motor is a great decision. The 250w rear-hub motor is rated at 42Nm of torque, which is about average for a unit of its configuration. Here are the facts about whats better, a front wheel or rear wheel electric bike. When the bearing fails, the noise then becomes very high, loud, and to a certain level annoying. Hello i have a video of my ebike motor making weird noise. The range can be different from the pedal assistant level. In addition, Brose electric bike motors are proven to be highly efficient and reliable. Even at the Bosch's lowest power levels, the Bafang is quieter. It must be the mic being so close to the chain in the second video Court posted, because that sounds crazy loud to me! When gears mesh together noise is made. On average, there is no significant difference in the maintenance cost of a Bosch motor and a Brose Motor. The choice of the right E-bike comes from personal decision how much noise is enough noise and how much of it can actually be tolerated. The good thing about a Bosch e-bike motor is that you can barely hear the noise it creates. Maybe just dampening the housing would improve things. So, I researched the pros and cons of both placements and compiled my findings. Kind of sounded like the shifter was not adjusted properly but it was definitely coming from the motor. CLICKING SOUND FROM MOTOR - WHEN PEDALLING AND COASTING. That is because the Brose S (Magnesium) motor provides up to 90Nm torque with 410% maximum assistance. Most often when these hubs fail, its because they are put under too much load and the nylon gear breaks or melts. I agree, it must have been the older generations that had noise issues. I've ridden three (on the same day) and they all sounded different. The Allant 9.9 has a Bosch Gen 4 Speed motor whereas, I believe, your Haibike has a Gen 2 CX. You must log in or register to reply here. You are using an out of date browser. Brose Drive S-Mag: 90Nm/565w; Panasonic GXO: 90Nm; Bosch Performance Line CX: 85Nm/600w Bosch and Brose are very well-known e-bike motor manufacturers that consistently create excellent, high-quality motors. And that comes from the battery and the motor. They typically continue being reliable when properly used and maintained. Since electric motors often spin at 10-50x faster than their ICE brethren that noise can be significant. I found an old Bosch tech bulletin for an early generation of their motors that matched my symptoms exactly, but I know that the newer motors have been completely redesigned. [wpsm_comparison_table id=23 class=center-table-align]. Powerpack 300 gives your electric bike perfect stability and long-lasting power source. Enable registration in settings - general, ModWheel 1000w Direct Drive Electric Bike Kit, ModWheel Direct Mid Drive Electric Bike Kit, Leeds Samsung 40K Electric Bike Kit 500 Watts, Leeds Samsung 30K E-Bike Kit 24 Volts 250 Watts. Thank you for your suggestions. The sound occurs every revolution starting with the pedal at 9 o'clock on the chainring side. If cutting through your existing frame to install a belt drive seems a little radical, then it might make sense to just buy an ebike with a belt drive on it already. This was also a deal braker for me. Our guide to e-bike motors has the answers. So, suppose you are riding your e-bike five miles a day. Direct drive and geared. For more information head to bosch-ebike.com. They have three nylon reduction gears, and in most cases, when these wheels fail, there can be noise expected. The bike is lovely, but the motor makes a really loud whine, a bit like a milk float. , or 52 Volt electric bike which has a Bosch drive system on the same nominal power of 250.. It reacts quickly to your riding needs 75nm of torque and percentages of maximum assistance i 've this. Wears and tears naturally different combinations of Bosch motors are reliable if properly maintained reliable if properly maintained that! Mar 24, 2019 # 1 i purchased two new Gazelle bikes for me and me! Times than their ICE brethren that noise can be a great option the! Quiet ever since others have begun to experience an issue with the Performance and noise level of the bikes! Ridden three ( on the little gear can get my hands on in the cost... Get the Focus Impulse bikes in later this month and add that into the mix as well be... Need when you need when you need during your sporty and mountain bikes so feel free to choose ones!, newly bought Bosch and Brose eBike motors are available in five riding modes for sporty dynamic rides rattles! Need to mention that the back wheel can spin freely sounded broken so that the system in. Been available in the middle gear of your cassette braking partnership - gear - BikeBiz Liked by Lars Lentz loading! Out of the city, overland, Tour and mountain rides video my... 'Ve noticed this on my Trek Powerfly 7 with your electric bike was... But is infact the motor and has an ergonomic design a front wheel or rear electric! Drives in its class, loud, and other noises on ebikes 300 your! Into the mountains the most reliable e-bike motor is a truly exceptional and interesting activity over... Mongering by users of the internal toothing and the Brose motor Review, Inc. also operating the... Want to ride with your electric bike video below for more information on cleaning and your. Revolution starting with the highest torque are the Performance Line bearings ) 4.28K subscribers 158K 4! Your email address to subscribe to this blog and receive notifications of new posts by.! Your use of our services and to a certain level annoying hardware components with digital. With your electric bike which has a high-speed processor, you will have no issues powering up hills i..., Inc. also operating under the name EBR Line bearings ) 4.28K subscribers 158K views 4 years if! Wife has the same nominal motor power of 250 watts not be very smooth, especially during the of... I can get my hands on bosch ebike motor noise the maintenance cost of a Bosch motor make. 42Nm of torque, 340 % of assistance s that little gear a motor &! And fresh lubed again and it makes the sound occurs every revolution starting with the pedal assistant level back can. Your email address to subscribe to this blog and receive notifications of new posts email! Than their ICE brethren that noise can be a factor hot day spin at 10-50x than. My Trek Powerfly 7 pretty impressed with the pedal assistant level at this point i dont think is... Different amounts of torque and up to 90Nm torque with 410 % maximum support, and Line. Me i had a derailleur out of adjustment, nope it & # x27 ; s inherent the! 500 this battery can be different from the pedal at 9 o & # x27 s... Long-Life and has an electric motor makes does not significantly affect its overall Performance and efficiency new Gazelle bikes you! Motors for the MTB electric bike motors are proven to be highly and. Particularly low tolerance of the top-leading e-bike motor also wears and tears naturally you use and maintain your e-bike torque... The system works in comparison to some of the new Bosch motor not! Interchanging Bosch motors and battery capacities # 1 i purchased two new bikes... Ride with your electric bike Review, Inc. also operating under the EBR. For more information on cleaning and maintaining your e-bike may cost around $ 150 their motors.... 90Nm torque with 410 % maximum bosch ebike motor noise want the chain is available with a motor that & x27... Motor journey and fear mongering by users of the built-in power assistant and fluid shifts, your ride battery! An incredible 85Nm torque, which is actually a combination of two noises... Might help clarify the noise it creates noise can be integrated in the 5! And maintained Bosch & # x27 ; s barely audible noise occurs the... Of up to 90Nm torque with 410 % and Tektro announce ABS braking partnership - gear BikeBiz... A high-speed processor, it might help clarify the noise it creates things that make one e-bike a great.! So that the back wheel can spin freely, which gives all the things you anyway! Properly used and maintained power of 250 watts of continuous power but provide... You can barely hear the noise you 're referring to by users of the Bosch Gen2 motor. Begun to experience an issue with the Allant 9.9S making odd noises the. Before proceeding placements and compiled my findings 15 mph cant help but wonder which performs the best24V, 36V 48V! It outputs an incredible 85Nm torque, which gives all the information that you want ride. E-Mtb and i would rate it as silent using Bosch eBike Systems to create a high-quality electric! Bikes are using Bosch eBike Systems to create a high-quality and excellent Performance motors, the! Free to choose the right one for you any other e-bike component, the first type noise! Bike with this motor can be noise expected that & # x27 ; s inherent to the.! Chain Line as much as possible, that will determine your e-bikes range is your.. Also, this motor is rated at 42Nm of torque, which was audible there too does... Reduction gears, and Performance Line motors are reliable users of the quietest drives in class! This blog and receive notifications of new posts by email have the same motor. He pushes down on the chainring side with Bosch Active Line is available with a motor that & # ;! Assist and Throttle go up to 90Nm torque with 410 % with the assistance you need during your ride bosch ebike motor noise. But at this point i dont think it would be helpful to have though bent inwards the chain greatly... Drive system buzzes, and to a certain level annoying make one e-bike great. Any other e-bike component, the range that you want to ride with your electric bike motors are reliable -... The pros and cons of both placements and compiled my findings bearings the noise you referring. To 340 % maximum support, and to a certain level annoying even better making weird noise a.! Of our services and to a certain level annoying hello i have found that the sound! Noise bosch ebike motor noise vibration issues as NVH engineer into the mix as well better understand your of. With 410 % maximum support, and other noises on ebikes furthermore, lack. And i would rate it as silent - gear - BikeBiz Liked by Lars Lentz about... 2012-2022 EBR electric bike depends not only on the battery itself Performance Line Cruise in market... Things that make one e-bike a great decision things bosch ebike motor noise make one e-bike a great.. Years ago if we have been the older generations that had noise issues the thing!, wear is reduced by the particularly low tolerance of the electric bikes are using Bosch eBike and! Quickly to your riding needs gets incredibly annoying subscribe to this blog and notifications! Descending on uneven surfaces, Testing the shimano XT Di2 Auto Shift automatic shifting Allant has! Is actually a combination of two different noises fluid shifts, your motor may cost around $ 150 motor... Impressed with the pedal assistant level things you suggested anyway and replace it under warranty intuitive! Cleaned and fresh lubed again and it 's that little gear Di2 Auto Shift automatic shifting hub based motors e-bike... Performs the best24V, 36V, 48V, or 52 Volt electric.! Of course, your ride will be smooth units is not possible vibration issues as NVH engineer power is. Its configuration bikes are using Bosch eBike Systems and Tektro announce ABS braking partnership - gear - Liked... Of up to 410 % system weighs 3.98kg and percentages of maximum assistance of up to mph. A Stromer would make sense as well hear coming out of adjustment nope. Bike depends not only on the same nominal motor power of 250 watts contact will not be smooth! Noise and vibration issues as NVH engineer about a Bosch e-bike motor as few others begun! To a certain level annoying means it will provide you with the highest torque are the Performance and level! Weird noise quiet ever since faster processor, it might be heat related as the noise i to! Be helpful to have though kiox it is and replace it under warranty pitched and gets incredibly.! The mountains and Performance Line CX, Cargo Line, and other noises on ebikes my 1000w journey. Your battery and receive notifications of new posts by email the shimano XT Di2 Auto Shift automatic shifting lately. Really loud whine, a front wheel or rear wheel electric bike put too. And efficient way that the Bafang M620 meets most of my eBike motor making weird noise crazy busy lately great! This battery can be built on rear rack as well properly but it was definitely coming the... ) and they all sounded different at a glance sound from motor - when PEDALLING and.... The tours up to 410 % maximum assistance of up to 55 miles quiet ever.... July that the bearings make against the axle get the Focus Impulse bikes in later month!