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hi jay, ok now i got it ;-) this combination will work and fullfill your wishe´s because the 350Watt on 48V have around 500watt and the rpm will be also enough for to receive 27mph i wish some fun on riding frank

you always can get the same performance from 36v as from 48v, it only depend on the motor-power/cooper-winding´s there is a rule, higher rpm reduce the torque! the lower torque you can compensate with higher Ampere-cut on controller. With 250watt you cant get 27mph it is to low power, the...

If you want more torque as an 250Watt motor, it is more easy and cheaper to use the BPM 350Watt-version or the 500Watt-version as to upgrade the battery to 48Volt also you can order the bpm with higher rpm as 275 if you want more speed forget the code, nobody on bafang know how to use the...

The original producer of this bike´s is Tranz-x, a Taiwan company It is a normal China bike because tranz-x factory is in China. I have seen this bike, if i remember right on Shanghai(China) exhibition in may this year. But i also like the design of the 20" Bike, not so boring as normal...

if you want ride faster as 25km/h you can use a 20" motor and fix it into a 28"rim, then you have support up to around 35km/h There are many points you must decide by yourself, I give you some points for Bafang choisess but it is on most motor similar. If you want order a motor in china at...

hi guys, you can buy a lot of different motors on bafang and many possibility´s is´nt shown on the website of bafang. only the dealers with interest know what is possible. I had a lot of personal discuss with the bafang boss on exhibition in China and elsewhere in the world. I can offer...

sorry that i havent explain my intention, i only want show the picture of this bike and if you look at the motor you see it is a Bafang BPM as a frontdrive. "Sachs" is a traditional german Bike company. They build Bike´s/e-bike´s I talk to them on exhibition "eurobike" and they told me the...

The BPM you also can get as a frontdrive please check: SFM-Bikes - Elektro-Fahrräder - BEAST man and yes, you cant order the 500Watt version. The 350Watt is highest level and i also would never suggest 500Watt for frontforks regards frank

I agree that the BPM is a little bit oversized for a folder. I would use a swxh for the rear or other small motor´s for the front, the freewheel of the BPM is also not relly good. The BPM is build to climb mountain in a 26" wheel. If you have a 20"wheel, you dont need this kind of motor. The...

"high-speed-motor" means the internal speed of the motor. The higher internal speed follows a higher rpm-reduction in the planetary gearbox. the SWXK or SWXH or SWXB work with 4,3 rpm reduction and the BPM with 4,9 rpm reduction. That´s what "high-speed-motor" means. now the real high speed...

Hi Dave, i only sell to companys as you maybe notice on my website ;-( but my good friend, Ge Shijie (e-crazyman), from Shenzhen/China sell to you the controller no problem. his mail-contact is ecrazyman@gmail.com send him some regards from me and he tell you the price and...

I agree with flecc that the hall-sensor replacement is´nt an easy job, i would not do it. If a sensor is failed , I would use an sensorless controller and forget the hall-sensor´s ;) I like easy solution. You know how to measure the sensors ? regards frank

Hi tetpol, on the left side, diskbrake side is a a 28mm/12mm bearing if i remember right. but your idea dont work. I had a look on your picture´s and i belief to know what you want do but i see no chance to do it this way. it is more easy to design/modify your knee-cruiser new. If i...

so , now i have it done on my website, Elektrofahrrad, pedelec zubehör You only must scrool down, the last three picture is from swxk maybe this answer your question, i hope Dont ask me why the chinese mixed mm and inch , i also relly hate and i belief there is no reason, the one who take...

belief me, it is 3/8" this is metric outside diameter 9,5mm if you look on the technical drawing you can read this "2-BC 3/8" for the axle diameter As a bafang dealer i have the Motor here to check and also i have the technical documentation from Bafang SWXK here ;-) maybe i make some photo...

the axle diameter on thread is 9,5mm outside, it is a BC-3/8" regards frank PS: i want send you a technical drawing of the SWXK(jewel) but the attachment-function dont work since some weeks. anybody have an idea what i´m doing wrong? maybe i setup something wrong? when i go to the forum...

if you use different controller, you receive different noise and vibration on e-bike Motor´s. Good controller produce low motor-noise and some ... forget it. it depend on different quality´s at the controller and what is inside the controller and the programming of the controller in...

i agree in all points with flecc and i belief for the most people a v-brake is enough. Cheap and high-effective. But i ride my bike in mountain area and myself is 115kg, i know i´m to fat:) so i need diskbrake because in mountain area and my weight the rim-side´s is very fast distroyed...

Near by, but sorry, my english is to poor to explain this problem. a short try, the programming on sensorless motor/controller is not so easy and the signal is not so clean as on sensor-motor/controller because it works with "against EMK" i dont know whether it is correct written? And...

Hello John, there are different Bafang SWXK Motor in trade. SWXK Sensorless and SWXK with Sensor is on the market. Also Version one and two is on the market. The version two is much more easy to fix a diskbrake too as on version one If you have a Bafang SWXK with Hallsensor, you can use...