Hey everyone greetings from Germany,
I'm currently in the process of building an e-bike using the Dengfu E82 frame paired with a Bafang M560 motor. I ordered the kit from Changzhou Fieldbikes and had a great experience communicating with Tars Wong—super helpful throughout. I paid around $1550 USD, plus $220 shipping (DDP) and some additional transaction fees. The package includes the frame, two empty battery cases, the motor, and some other accessories.
I've got a BESST Pro tool on the way to help with configuration, but I’ve also been eyeing some products from K1 Racing—specifically the BB Racing Ultimate, and possibly the K1 Flash. That brings me to my first question:
What exactly can the BB Racing Ultimate do?
Can it both disable the throttle and limit power and speed to meet EU road regulations (i.e., 250W continuous and 25 km/h), or does it only do limit speed? Also, is it possible to remove the default key combination used to switch modes? 90% of my needs would be covered if i could just set the Speed lower, but losing that button combination in favour of something more hidden. (I am not trying to ride illegally, i want to do it the right way)
My goal is to ride legally on the road, but I’d like the convenience of unlocking the full potential when I’m off-road on private property—without having to plug in a laptop or use the BESST tool each time. Around here, the police are quite familiar with these combination unlocks and check them frequently, so I’m looking for a more discreet and secure solution.
I came across solutions for other Bafang systems (like the BBS01/02/HD) that allow a locked “on-road” mode, which can then be unlocked to “off-road” with an RFID tag(GutRad StVO Module). That kind of system would be perfect. So my main question to the guy(s) behind K1(or anyone who knows):
Is it possible to replace the key combination of the K1 BB Racing Ultimate with something like an RFID tag or remote fob to switch between road and off-road modes, while booting up in road-legal mode by default? (I understand the m560 sadly doesn't support the boot up feature)
If that were possible, I’d immediately jump at it and of course I would gladly pay extra for them to make me a custom box.
I’ve also been looking at the Eggrider C1 display, which apparently now has a CAN bus version. I plan to reach out to them aswell to understand what it can do in terms of editing and mode switching. I really like the look of the display, and if the app-based mode switching works reliably, that could be a great alternative.
I'm also open to other ideas, DIY hacks, or recommendations—especially since I enjoy working on this stuff and wouldn’t call myself completely technically illiterate (micro soldering is also fine).
As for batteries: one of my goals is to build my own using NCR18650GA cells. Mainly to avoid the crazy shipping costs to Germany. Ideally, I’d love to cram 84 cells into the pack (for a 14s6p configuration), as capacity is a big deal for me. Realistically, I may have to settle for something like a 13s6p (78 cell) layout, just like the official design from Dengfu—but I’ll see what’s possible. I'd like to use a BMS that can communicate with the Motor via CanBus, but I haven't found a fitting BMS so far, its not clear what Dengfu is using. Input is greatly appreciated.(Also looking for a fitting charger with variable amps, preferably 2-10a, but anything that has one slow, one fast charging rate is good too. I'd need one with a DC 2.1 plug, or one that can have it retrofitted)
Also, if I manage to go the 52v 14s route, I need to flash a 52v firmware on my M560, since its a 48v model from stock. Does anyone have the newest firmware for 52v? It would be greatly appreciated!
I am also looking for decently sized mudguards for the E82 and also my Rockshox Lyrik 2023, bolt on would be strongly preferred if it is available
I posted this in the Newbie section originally, but I think its a better fit for the DIY E-Bike section as there is more activity here aswell.
Thanks for reading, and happy riding!
I'm currently in the process of building an e-bike using the Dengfu E82 frame paired with a Bafang M560 motor. I ordered the kit from Changzhou Fieldbikes and had a great experience communicating with Tars Wong—super helpful throughout. I paid around $1550 USD, plus $220 shipping (DDP) and some additional transaction fees. The package includes the frame, two empty battery cases, the motor, and some other accessories.
I've got a BESST Pro tool on the way to help with configuration, but I’ve also been eyeing some products from K1 Racing—specifically the BB Racing Ultimate, and possibly the K1 Flash. That brings me to my first question:
What exactly can the BB Racing Ultimate do?
Can it both disable the throttle and limit power and speed to meet EU road regulations (i.e., 250W continuous and 25 km/h), or does it only do limit speed? Also, is it possible to remove the default key combination used to switch modes? 90% of my needs would be covered if i could just set the Speed lower, but losing that button combination in favour of something more hidden. (I am not trying to ride illegally, i want to do it the right way)
My goal is to ride legally on the road, but I’d like the convenience of unlocking the full potential when I’m off-road on private property—without having to plug in a laptop or use the BESST tool each time. Around here, the police are quite familiar with these combination unlocks and check them frequently, so I’m looking for a more discreet and secure solution.
I came across solutions for other Bafang systems (like the BBS01/02/HD) that allow a locked “on-road” mode, which can then be unlocked to “off-road” with an RFID tag(GutRad StVO Module). That kind of system would be perfect. So my main question to the guy(s) behind K1(or anyone who knows):
Is it possible to replace the key combination of the K1 BB Racing Ultimate with something like an RFID tag or remote fob to switch between road and off-road modes, while booting up in road-legal mode by default? (I understand the m560 sadly doesn't support the boot up feature)
If that were possible, I’d immediately jump at it and of course I would gladly pay extra for them to make me a custom box.
I’ve also been looking at the Eggrider C1 display, which apparently now has a CAN bus version. I plan to reach out to them aswell to understand what it can do in terms of editing and mode switching. I really like the look of the display, and if the app-based mode switching works reliably, that could be a great alternative.
I'm also open to other ideas, DIY hacks, or recommendations—especially since I enjoy working on this stuff and wouldn’t call myself completely technically illiterate (micro soldering is also fine).
As for batteries: one of my goals is to build my own using NCR18650GA cells. Mainly to avoid the crazy shipping costs to Germany. Ideally, I’d love to cram 84 cells into the pack (for a 14s6p configuration), as capacity is a big deal for me. Realistically, I may have to settle for something like a 13s6p (78 cell) layout, just like the official design from Dengfu—but I’ll see what’s possible. I'd like to use a BMS that can communicate with the Motor via CanBus, but I haven't found a fitting BMS so far, its not clear what Dengfu is using. Input is greatly appreciated.(Also looking for a fitting charger with variable amps, preferably 2-10a, but anything that has one slow, one fast charging rate is good too. I'd need one with a DC 2.1 plug, or one that can have it retrofitted)
Also, if I manage to go the 52v 14s route, I need to flash a 52v firmware on my M560, since its a 48v model from stock. Does anyone have the newest firmware for 52v? It would be greatly appreciated!
I am also looking for decently sized mudguards for the E82 and also my Rockshox Lyrik 2023, bolt on would be strongly preferred if it is available
I posted this in the Newbie section originally, but I think its a better fit for the DIY E-Bike section as there is more activity here aswell.
Thanks for reading, and happy riding!
