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on Bafang-motor is always the windings different, in this way they motor is made for 25Km/h in a 20" rim or in 25km/h in a 28" rim. The sprockets/gearbox is always the same it would be to complicatet to change the planetary gears to receive different speed. To change the winding is much more...

sorry flecc, i forgot to say that this very much dependent on controller-setup. Many of my former customer, ride by 25Ampere and more. Some crash the sprocket after only 200km with 60Volt-45ampere. of course, if the bike have a setup under 20ampere you can ride maybe more as 1000km without...

diskbrake is no problem on the new Bafang swxk modell ceck the photo of the old and new. The new modell of swxk you can use with 160mmdisk regards frank

the sprocket is not a problem, if you use the bike as an electric-bicycle, 20000km is no problem. If you use the bicycle as an Motorbike and dont use the pedal it keep maybe only 500-1000km But price for the sprocket is cheap, around 5euro regards frank

yes and another point is that you can choose on my controller the characteristics of the Motor/Controller combo because you can setup my controller with computer in many points, if you also buy the software and the USB-data-transferwire :D regards frank

the diameter of the tyre is one point but the main point is the voltage. the 26" bafang motor have around 195rpm on 36v leadacid Battery but a full loaded modern lifepo battery have more than 40v and each single volt brings you another 5,5rpm. If you connect 48v to this conversion-kit the...

Hi , this kind of Motors is in my eyes the best, but not easy to install. I have the crankdrive motors in my stock and technical information you find on my Website. please have a look: Der Umbausatz a little bit down you find the Motor and data with drawing you find on Für technisch...

Hi Jerry, from my experience, you can trust billy from Dongsheng. I order a lot from him as i live in Germany and i ever receive my order and if you send him the photo from the Motor you want he send you the same one;-) With Diana or Vivien from Tongxin, it is senseless to comunicate with...

Metal gears for the bafang you can buy in my shop in guangzhou or at my friend, ecrazyman in shenzhen But with the metal-gear the motor produce a little more noise and the sun-wheel have a little more to work so it can be need to replace after some thousand kilometer. frank

With the ecrazyman controller you drive a little faster because no cut at 15mph this is right. But if you want setup the controller 20A choose the sensorlesscontroller from ecrazyman because with 20ampere the motor becomes overheat when hill climbing . The result is a male function on one off...

Hello ecrazyman is able to deliver many different controllers from continuous 350watt (peak 700Watt) up to continuous 2500Watt (peak 6000watt) from 6fet´s up to 18Fet´s controller. from 36Volt up to 90Volt And in next month (i hope) comes a new 6fet controller with low temperature so...

Hi Peter and all the others who are looking for good torque arms. the best torque arms I know come from www.ebikes.ca Homepage of the revolution this arm are not cheap but professional. regards frank

hi daniel, jerry , paul and everybody, thanks for wishes to me To live in china is not a big deal only the food i dont like but McDonald and Kfc is not far away so i can survive there :) and the other things: bad air , to much people , always trafic in the street, strange police...

Hello Andyh2, please make a photo from your Controller with all connectors and most time i can tell you how to connect the crazyman Controller on different Motor brands: Bafang, Tongxin, nineContinent, Puma, Weifeng, FWF and other Motors because i sell maybe more than 1000 different...