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Thanks guy. To be honest, I still want to build a legal bike 36v 250w. I wish I could make it running steady 20mph as well for off road purpose. How about this rear motor 36V QSWXH Rear Drive Brushless Hub Motor - BMSBATTERY Would it be able to run 20mph with 20amp at 36v? Will I get a lot...

Thanks. You make me to think about getting a rear motor instead. I need a better traction Had a quick check both BMSbattery and GBK sites and they do not offer Bafang 36v 250w rear motor. Anyone know how to source it? Thanks. Pat

How about this battery 48V 10Ah Li-Ion Alloy 03-CASE EBike Battery With a Carrier Rack - BMSBATTERY Would the supplied 36v 250w still be able to work for this voltage? I believe BMP K5 motor is tougher than Q100 so it should able to gain steady 20mph right? Any idea? PAT

Thanks everyone. It seems many of them are using Frog type battery. Is it a big problem using rear rack battery? Wish I can put a bigger battery in like 36v 15AH...

Thanks. What can I do to achieve steady 20mph-22mph? What modification do I need to do? I have read one of the cyclamate bike thread those bike can reach 26 mph just by change from 24v to 36v battery. What is the main difference between my setup and their bikes? Pat

Thanks. From the comments, it seems there is a problem fitting rear rack on 24" frame. Not ideal for mounting the rear rack battery setup. Do you know a way how to get around it? Pat

Thanks. Can you give me a bit more details for the model you have done? Photos would be nice Pat

Not quite...those bikes need to dismount the front wheel before get it to fold My idea is not to disconnect the cable and still able to fold.

Hi anyone, I have tried to look for a full size folder with electric motor and it seems it does not exist so I have to look for the one without electric. I came across dahon cadenza and it seems the only folder that fits the electric motor well. Do you think it is a bad idea converting...

Sorry for digging this old post. I have finally started with the project. Before I order everything, I need to double check something My requirement: 15 mile each way (able to charge at work) Countinous speed 20mph My kit I am buying is QSWXK5 36V250Watts Front Driving K5 Motor...

Good story. Hope you can keep up cycling with smile. just wondering how much did you spend at the end? Did you need to select DHL instead of Fedex due to the shipping limitation? Thanks Pat

Thanks a lot Dave. You are a great help. I might have to look for something else then Pat

Thanks Dave. I will try to seek David Miall for help. off topic really, it is good to see you offering spare parts for your bikes. Do you supply conversion kit as well? Pat

Hi Dave My wisper folder has started losing ranger over a year so rather than replacing the panasonic 18650 battery I am tempted to swap it with lifepo4 battery for longer life. Do you think is it wise to do? I am not sure if my existing rear rack would fit your 36v 10ah battery+controller case...

Thanks John. Your Ezee kit looks great and it could be my future upgrade. I have been told that +20mph 20inch folder is quite hard to handle so I gave up that idea. In the future the wisper folder will be my backup and I will get a full size powerful ebike. That's why I prefer lifepo4 battery...

Sorry for asking some stupid question. I am completely new to this and try to ask everyone nicely here. I prefer a long term instead of more powerful option so I pick lifepo4 battery. I am sorry I did not get the throttle from u offered but I do not want to spend something end up useless...

Thanks a lot. Personally u still prefer lifepo4 battery with the controller case. Is Kudos looking at this thread? Pat

Thanks. I still want to keep my existing controller so I thought you could supply a controller case Can you tell me the dimension of the rear rack that slots the battery in? Can I use bigger battery for that slot? Pat

Thanks. It looks really neat to me but I have a few more questions. Do you supply the 36v lifepo4 10AH or 15AH? Is the rear rack very stable on 20inch? How big is the controller box? would that fit the 250w controller? I would great if you could show me more close-up pictures. Pat

Thanks but I could not find the rear pannier rack and controller case with battery slot. Anyone can help?