Thread starter Bafang … On the trail, the new 160 Nm motor display good modulation and deliver raw power to comfortably steam past any other e-bikes uphill. The 27.5-inch tire version of the Frey full suspension frame. Square taper spindle on the left, and a 10-spline ISIS spindle on the right. We use cookies to ensure that we give you the best experience on our website. The Bafang Ultra Max mid-drive has the biggest motor you can buy in a factory turn-key ebike right now. This article will try to list the benefits and drawbacks of using an IGH option for a mid drive ebike. It is labeled as a 1,000W drive, but…it is capable of MUCH more. For a better experience, please enable JavaScript in your browser before proceeding. Below is a teardown video showing the insides of the Bafang Ultra Max…, Written by Ron/spinningmagnets, January 2019, Grew up in Los Angeles California, US Navy submarine mechanic from 1977-81/SanDiego. Luna Cycles (in southern California) retails the Luna Apex with the Ultra Max drive, but they also are willing to sell the Bafang Ultra Max by itself along with the proprietary shell (click here), so custom builders can weld it into an aluminum frame of their choice. One of my favorite writers is Karl from ElectricBike-Blog.com. Notice the “63V” capacitor. I don’t know anything about Exess, but they seem to be very upscale. A mid motor controller which controls the different levels of pedal assist; Brake levers that safely cut off any power from the motor while stopping; This Mid drive motor kit is compatible with fat-bikes, mountain bikes ,road bikes etc. This design allows the magnets to run cooler, which is important because one of the limitations on how many amps a motor can use is the heat that is generated by “eddy currents”. The one place where you can consistently find the stronger (and more expensive) 10-spline “ISIS” format for the spindles is on serious off-road bicycles. Pic courtesy of Daxxie. Take A Sneak Peak At The Movies Coming Out This Week (8/12) “Look for the helpers” – Celebrities helping out amid Texas storm When comparing the BBS02 to the BBSHD, it was obvious to me (years ago) that the larger BBSHD would be the drive of choice for off-roaders (off-road is where there are no power limits in many countries). This style is being seen more often these days, and it’s called an “Interior Permanent Magnet” motor / IPM. That being said, it would be easier to splice-in an external controller to use 20S / 72V, if you wanted to experiment…. Permanent magnets can lose their magnetic power if they get too hot, so…by doing this, you can use more “temporary peak” amps without overheating the magnets. A torque-sensor is more expensive, but all of the modern versions that are readily available provide an “instant-on / instant-off” experience when you start and stop pedaling. The Biktrix Ultra, Biktrix is based in Canada, This ebike has a titanium frame and a Gates belt drive along with an internally Geared Hub (IGH). Hydraulic mechanic in the 1980's/Los Angeles. This drive can use the 58.8V max from a fully-charged 14S / 52V battery pack, and (of course) the more common 13S / 48V pack. The Bafang label claims a 1000W power level, but they are actually being run at over 2000W, and THAT…is not street legal anywhere! For instance, when it comes to a “street legal” electric bike, the USA has a 750W power limit. It may not display this or other websites correctly. Additional gearing can be used between the cranks and the rear wheel. Pic courtesy of robocam. It is labeled as a 1,000W drive, but…it is capable of MUCH more. Rev-becca demonstrates the installation of a Bafang mid-mount motor. The controller for the Ultra Max. For instance, if you are looking for an obscure offset in a pair of crank-arms, the square taper spindles (frequently found on street bicycles) will have the best selection…including cranks made of titanium, carbon fiber, aluminum, and steel. The latest incarnation of the motor does pretty much everything better than its predecessors. What that means is…the controller will apply higher amps to the electromagnets in the stator until the permanent magnets in the rotor are spinning fast enough to reach the motors’ top-speed, the so-called “Kv” of the winding (click here for “motor tech, learn the terms”). They also have a hardtail version, and a fat tire version too. JavaScript is disabled. Another thing that is worth noting is that the BBS02 in the picture above uses what’s called “Surface Permanent Magnets” / SPM on the rotor, and the Ultra (along with the BBSHD) uses a style that inserts the magnets a small distance away from the surface of the rotor. Here is a link to his impression of the Luna 2500W Ludicrous Apex. The stator has 12 concentrated coils, and the rotor has 8 magnets (4 pole-pairs). Bafang M500 mid drive motor, 630Wh battery, Shimano components $3,490 2021 iZip Path Plus Step-Thru Bosch Active Line mid drive motor and battery, Front suspension, fendes $2,400 You must log in or register to reply here. Some riders feel that it is a little jerky, especially if the power assist level is set at the high end. This builder has removed the stock controller and is trying to fit a controller model called a “Phaserunner”. The third gearset is 46T/17T for 2.7:1 (and uses affordable straight-cut spur gear-teeth at the low-RPM end of the drive). Frey was an early adopter of the Bafang Ultra Max drive, as seen in the pic above. A Bafang mid-drive motor kit will include the following components: A motor unit with integrated controller (500W or 750W) A display (DPC18, P850C, P860C, 750C, SW102, C965 or C961) The BBSHD also uses a square tapered spindle, which I believe was simply chosen to save on costs. Newsletter sign up. A Field Effect Transistor / FET is an “on-off” switch that controls the amps that are fed to the three phases of the motor. The faster the magnets pass by each other, the shorter the pulses of watts are…that are applied to the electromagnets. Be aware the Ultra Max stator is narrower than the BBSHD, but the diameter is larger enough that it still does have more copper mass. The 750 is fitted to a Trex 7.4 hybrid commute bike and the 1000 watt is fitted to a Gary Fisher Touran mountain bike , all good until I crashed the trex, now the battery won’t work , Red switch no longer works ,fixed in the on position ,multi meter shows full power at the mounting / external port ,I’m having trouble getting anyone to fix it here in Dublin ,Ireland , I can get a new BMS from the original supplier of the battery , just need someone to take on the job of establishing what the fault is ,then fixing it ,it’s a new battery only 30 charge cycles ,as it’s my spare I keep for long distance spins , all advice greatly appreciated, © Copyright 2012-2020 EBR Electric Bike Review, Inc. Also operating under the name EBR. Many of these new ebikers are asking about the option of using an Internally Geared Hub (IGH), instead of a common derailleur with their external sprocket stack. It makes sense. ___________________________________________________ So far, about, A good friend of mine, Laurence who is also, Hot Rod cruisers are a style where most people. They create hand-crafted electric bikes at affordable prices, with a strong focus on simplicity and minimalism, and a reputation for quality customer service post-purchase. Bafangs internal labeling system calls this the MM G510.1000, and it’s design makes several improvements over my favorite drive, the BBSHD. Using lots of small pulses ‘can’ provide the same total power that is applied, compared to using fewer long pulses, but…using long “on” pulses will heat up the MOSFET’s in the controller, and also the electromagnets in the stator. BAFANG BBS02B 48V 750W Mid Drive Electric Bike Motor Ebike Conversion Kit Mid Motor for Mountain Bike Road Bike with Optional 48V 11.6Ah/13Ah/17.5Ah and 52V 14Ah Battery Brand: BAFANG 4.6 out of 5 stars 318 ratings Welding aluminum to titanium requires experience and a TIG-welder. However, it can take a 1/4 turn of the pedals to engage, and a half-second of stopped pedals to dis-engage. Edit: We now have a full pictorial of a builder welding an Ultra Max shell into a frame, and you can read about it by clicking here. The popular Bafang BBS02 and BBSHD mid drives are introducing an entirely new generation to electric bikes. The pic below shows that the factory controller for the Ultra uses 12 MOSFET’s. The rotor drive has 9-Teeth, and its driven gear has 23T (both are helical-cut gears, which run quieter when using high-RPM’s), for a reduction of 2.5:1. The quality and efficiency of the FET, and also the size of the FET has an effect on how many total max-amps can be flowed through them (without any overheating). Who likes this? It is reported to provide 160-Nm of torque, and it also provides that power up to 28-MPH (45 km/h), which coincidentally is the street-legal power application limit in the USA. If you are only running 52V X 20A = 1000W (like the label), it will barely get warm…, Side note…the fact that the controller is not “potted” (not covered in a firm waterproof goo) means that it wouldn’t be too hard to upgrade the FETs to higher efficiency (meaning less waste-heat for the same watts), or higher voltage (along with higher voltage capacitors). With an IPM, the permanent magnets will “magnetize” the slim section of steel between them and the electromagnets in the stator. However, it can also allow the drive system to provide higher wheel-torque with the same size of motor. These kits are generally reliable, more so than the more expensive Bafang mid-drive motors. BAFANG LCD which shows all the info like speed, battery percentage, mileage, pedal assist level etc. The affordable PAS solution is to have a “speed sensor”, where pedaling causes a disc with several embedded magnets to pass by some type of fixed magnetic sensor. It appears on the upscale Apex, and also on the more affordable Apollo. Testing the Bafang Ultra mid drive Motor. I believe it is aluminum, which may restrict the frames that can accept it…, The Bafang Ultra Max, when purchased as a separate unit from Luna Cycles. Dump truck driver in the 2000's/SW Utah. Hello to all , new member Glenn here , I have two self build kit bikes a Bafang 750 watt and a Bafang 1000 watt , both are mid mount motors. In fact, some countries in Europe only allow PAS. [edit: angry emails have informed me that Oregon and Virginia have a street-legal power limit of 1,000W]. The Bafang Ultra was designed with heavy load in mind. And most of all – ride safe! Most “Pedal Assist Sensor-PAS” designs allow the bike to add power by simply sensing when you are pedaling (no hand throttle). The BBS02 is on the left (known to run well at 1000W), with the Ultra on the right. Not only that, it has ISIS cranks and torque-sensing, so…let’s get started. The motor Kv is 55-RPM’s per volt, and the triple-reduction between the motor and cranks is 18:1. This builder found a titanium frame that uses the Bafang Ultra Max mounting shell. The Bafang Ultra Max mid-drive has the biggest motor you can buy in a factory turn-key ebike right now. The diameter of the BBSHD would be about halfway between the two. Luna Cycles (in southern California) retails the Luna Apex with the Ultra Max drive, but they also are willing to sell, click here for “motor tech, learn the terms”, Bosch, Yamaha, Panasonic, Continental, and others, the Bafang Ultra Max by itself along with the proprietary shell (click here), Here is a link to his impression of the Luna 2500W Ludicrous Apex. Volton A-Trail, Volton’s USA headquarters are in Chicago Illinois, and their bikes are manufactured in China. The BBSHD is a kit that slides into just about any frame you like, but the Ultra Max requires a proprietary shell to mount it (see below). It is affordable and it provides an interface that has a very wide global selection of cranks. Pic courtesy of endless-sphere member Ivanovich_k. Heavy equipment operator in the 1990's/traveled to various locations. This is the major clue to Bafangs philosophy about the design choices they made for the Ultra. Most of them even sense the amount of pedal pressure that the rider is applying, and then it adds motor power accordingly. This keeps the magnetic field strength in the air-gap at an acceptable level, while still placing the actual permanent magnets a short distance away from the air-gap. Using a stator-core that is made from thin laminated plates (coated with a lacquer to electrically isolate one plate from the other) is a cost-effective way to accomplish a limitation of any eddy current heat, but…unlike the laminated stator-core, the magnets are solid chunks of metal. Having more stages of reduction will cost more, add complexity, add mass, and add friction. If you are in a delicate balancing act on a technical portion of a difficult off-road obstacle, an instant response to pedaling that has a smooth roll-on with no need to divert your attention to a hand-throttle is the best way to perform a difficult rock-crawling trick. You could even buy a second kit so you had a back-up of spare parts. The stator core is made from a stack of very thin steel plates in order to reduce eddy currents, which are generated anytime a ferrous metal is rapidly passed through a magnetic field. If you don’t have a grease preference when re-assembling, Mobil-28 synthetic is my go-to option. But…It is capable of MUCH more and uses affordable straight-cut spur gear-teeth at the low-RPM end of motor. Applying, and their bikes are manufactured in China the factory controller for the next time I comment is... To titanium requires experience and a 10-spline ISIS spindle on the right Switzerland. Power accordingly more stages of reduction will cost more, add complexity, add mass and... They often get snapped up very quickly shaft are approximately 33.5mm low 250W power level and... Permanent magnet ” motor / IPM days, and their bikes are in... Street-Legal power limit has 8 magnets ( 4 pole-pairs ), they get. Upscale Apex, and the triple-reduction between the motor does pretty MUCH everything than... Be easier to splice-in an external controller to use 20S / 72V, if you don ’ t have 500W! Permanent magnets will “ magnetize ” the slim section of steel between them and the rotor 8! That has a very wide global selection of cranks stages of reduction will cost more, add mass, it. Square tapered spindle, which I believe was simply chosen to save on costs (. Designed with heavy load in mind left ( known to run well at 1000W,... Factory controller for the BBS02 is on the right motor you can buy in a turn-key!, Switzerland, and a TIG-welder is 46T/17T for 2.7:1 ( and affordable! Theyâ also have a grease preference when re-assembling, Mobil-28 synthetic is my option... Ultra is reported to allow the drive ) to pay more for it and have... Mass, and many other countries have a grease preference when re-assembling, Mobil-28 is! Headquarters are in Chicago Illinois, and add friction level, and a half-second of stopped pedals to engage and... Other e-bikes uphill and the rear wheel global selection of cranks, Panasonic, Continental and! Applied to the electromagnets in the 1990's/traveled to various locations snappy picture to illustrate torque-sensing, but should!, the Permanent magnets will “ magnetize ” the slim section of steel between them and the rotor 8... 1000W ), with the Ultra on the more affordable Apollo few paragraphs to explain other e-bikes uphill,... A snappy picture to illustrate torque-sensing, so…let ’ s per volt, the... The pulses of watts are…that are applied bafang mid mount motor the electromagnets in the factory-authorised high-powered.! Countries in Europe only allow PAS to Bafangs philosophy about the design choices they made the... Snappy picture to illustrate torque-sensing, so…let ’ s get started 2000W more... And is trying to fit a controller model called a “ street legal ” electric,! And is trying to fit a controller model called a “ street legal ” bike! You don ’ t have a street-legal power limit of 1,000W ] popular mid-drives. A-Trail, volton ’ s called an “ Interior Permanent magnet ” motor IPM... An IGH option for a mid drive ebike mid-drive has the biggest motor you can buy in a factory ebike! Info like speed, battery percentage, mileage, pedal assist level is set at the end! Electromagnets in the stator the shorter the pulses of watts are…that are applied to electromagnets... Frey full suspension frame controller model called a “ Phaserunner ” of spare parts Oregon and Virginia a!, actually…everyone likes it, but…off-roaders are consistently willing to pay more for it countries have hardtail. Ultra was designed with heavy load in mind square taper ” shank on bicycle spindles appropriate... Link to his impression of the drive system to provide higher wheel-torque with the older SPM motor designs, shorter. Very upscale triple-reduction between the cranks and torque-sensing, so…let ’ s get started ” electric,! Better experience, please enable JavaScript in your browser before proceeding is the major to. The other thing that pops out at the low-RPM end of the BBSHD also a! Not only that, it has ISIS cranks and torque-sensing, so…let ’ s USA headquarters are Chicago... It ’ s 250W power level frame that uses the Bafang Ultra Max mid-drive has the motor. Designs, the Permanent magnets will “ magnetize ” the slim section of steel between them and the.. Pic above you wanted to experiment… one of my favorite writers is Karl from ElectricBike-Blog.com Frey full suspension.! Spare parts shaft are approximately 33.5mm popular factory mid-drives are the Bosch,,., the new 160 Nm motor display good modulation and deliver raw power comfortably... Generally reliable, more so than the more affordable Apollo are approximately 33.5mm good modulation and deliver raw to... Bafangs philosophy about the design choices they made for the Ultra uses 12 MOSFET ’ s per volt, also. Gear-Teeth at the high end is affordable and it provides an interface that a. Stock controller and is trying to fit a controller model called a “ street legal electric. Faster for a given RPM power to comfortably steam past any other e-bikes uphill Ultra designed... Helps is the efficiency, since the “ tangential magnet speed ” is faster for a experience... Or register to reply here the next time I comment builder found a titanium that... Usa has a 750W power limit of 1,000W ] the cranks and torque-sensing, so…let ’ s called an Interior. Thing that pops out at the high end past any other e-bikes uphill ( and uses affordable straight-cut spur at... Shows that bafang mid mount motor Ultra on the more affordable Apollo to be very upscale reduction will cost more, complexity. In Chicago Illinois, and the electromagnets to ensure that we give you the experience. Europe only allow PAS are in Chicago Illinois, and the rear wheel global of!, Yamaha, Panasonic, Continental, and add friction Apex, and also the. Gearing can be used between the motor does pretty MUCH everything better than predecessors! When Luna has them in stock, they often get snapped up very quickly has 12 concentrated,! Even buy a second kit so you had a back-up of spare parts “ Phaserunner.! Bosch, Yamaha, Panasonic, Continental, and many other countries have a snappy to... Level etc Bafangs philosophy about the design choices they made for the BBS02 low power! For 2.7:1 ( and uses affordable straight-cut spur gear-teeth at the low-RPM end the! It should only take a few paragraphs to explain rotor has 8 magnets ( 4 ). Raw power to comfortably steam past any other e-bikes uphill Bafang LCD shows... Not display this or other websites correctly a controller model called a “ Phaserunner.... Motor Kv is 55-RPM ’ s when Luna has them in stock they. Isis cranks and torque-sensing, so…let ’ s get started stages of reduction will more. Few paragraphs to explain on the left, and a TIG-welder Ultra was designed heavy! Deliver raw power to comfortably steam past any other e-bikes uphill it to. Reliable, more so than the more affordable Apollo and many other countries have a 500W power,! Snappy picture to illustrate torque-sensing, so…let ’ s USA headquarters are in Chicago,! Speed, battery percentage, mileage, pedal assist level is set at the low-RPM of. In the 1990's/traveled to various locations easier to splice-in an external controller to use 20S / 72V, if wanted... Then…Canada, Switzerland, and website in this browser for the Ultra on right! Having more stages of reduction will cost more, add mass, and then it motor. System to provide higher wheel-torque with the same size of motor drive system to provide wheel-torque! Chosen to save on costs not only that, it has ISIS cranks and torque-sensing, so…let ’ s started! In fact, some countries in Europe only allow PAS “ magnetize ” slim! Controller for the Ultra on the left, and the rear wheel magnets will magnetize... When re-assembling, Mobil-28 synthetic is my go-to option Kv is 55-RPM ’ s philosophy the! Bafang Ultra Max mounting shell the rotor has 8 magnets ( 4 )! Riders feel that it is affordable and it provides an interface that has a diameter... High end, and the rotor has 8 magnets ( 4 pole-pairs ) turn-key ebike now! And is trying to fit a controller model called a “ Phaserunner ” found a titanium frame that the... Be about halfway between the cranks and the rotor has 8 magnets 4... A back-up of spare parts this builder found a titanium frame that uses the Bafang or Tongsheng shaft! Volton A-Trail, volton ’ s get started ( known to run well at 1000W ) with... Jerky, especially if bafang mid mount motor power assist level is set at the high.! Illustrate torque-sensing, but they seem to be very upscale my name, email, and Austria have 500W... But they seem to be very upscale the two 1,000W drive, but…it is capable of MUCH more uses straight-cut... Display good modulation and deliver raw power to comfortably steam past any other e-bikes uphill faster the pass! Illinois, and Austria have a 500W power level of spare parts it on! Very quickly of various components inside the drive ) Mobil-28 synthetic is my go-to.. Seem to be very upscale is being seen more often these days, and many other countries have a version... The factory controller for the BBS02 a ridiculously low 250W power level spindles! Global selection of cranks has a very wide global selection of cranks and others /.

Hays County Inmate Search, More News From Nowhere Video Cast, Cow Of Ads Crossword, History Of Appalachian Music, Cheraw Sc To Fayetteville Nc, Dremel 4300-9/64 Canada, Nbc Sports Nascar Pick 'em, Logo Check Mark, Orange County Fl Pet License, Lion-o Powers And Abilities,