How to identify controller and compatible motors?

[LMP]

Hi all, i have an e-bike that came with the controller inside the battery case. That battery is a YOKU EPRO series:

http://www.yokuenergy.com/en/ProductShow1.aspx?ChannelID=3&TypeID=28&ProductID=175

The point is that the bike came with a 8fun 250w geared rear hub motor and i want to put a more stronger motor, something like 350-500w, but i don't know which motors will work with the controller.

The only information about the controller in the battery is:

Voltage: DC36V

Low Voltage: 30+-1V

Type: SY WKZQ36-250

CURRENT: 15+- 1A

Speed: 1-4.2V.

How can i know which motors will work with this controller, battery, PAS, my entire kit?

Thanks!

 

[arkmundi]

Hmm, well, I wouldn't. A manufactured eBike will come with a set of well matched components. So swapping out one, say the motor, means you'd have to likely upgrade the battery, and then the controllers. Might as well start from scratch and get a good eBike kit (see my top 10 list below) and put it on a bike to your liking. In the workshops I conduct, I start people off with a consideration of what they want to travel, a why kind of question. Like road mostly, or trail? Hard trail, technical? Downhill? Racing. Or leisure. Comfort bike? Want to do the household errands and haul groceries? Maybe a cargo bike? Its all about what surface and what you're hauling, where you're going and so forth. Then a consideration of motors, their power rating, the ins & out of being street legal and so forth. Then step into batteries and how to power the motor. Considerations of watts, voltage, amps, amp-hours & range. Finally the controller, throttle and balance of parts.

I suggest that people do their own build, buying a kit without battery and then building a battery. I'll go over why that's a good idea. Look at various kit options, the vendors and the ins & outs of a build. After a full bodied conversation, suggest they buy a kit and proceed with a build. What's nice about today's wired world are the numerous options available, eBay, Craigslist, online-retailers & resellers and so forth. Its possible to find a really awesome perfectly suited used bike for a bargain price. I believe in recycle bikes & parts, remaking & improving.

So get a bike & eBike kit perfectly suited to your needs. There are LOTS of options.

But as to your question. Its a 36 volt battery for a 250 watt motor. You can get a 1000 watt MAC kit to run on 36V. So if you're planning upgrading the motor but want to keep the battery, anything between 350 watts to a 1000 watts. Then when you buy that motor, buy the controller for it. EM3ev, for instance, has & mix & match buying process where you can order up just what you need and no more.