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  1. hamncheez

    CEF50 External battery build

    I got the custom 410wh battery, which sounds fine compared to the competition, but I ride at 5am and on my natural bike I like to do at least 2,400 feet of climbing, sometimes over 3,000. I was hoping to go even bigger on an ebike, but this motor in B mode reports a consistent 580+ watts, so if...
  2. hamncheez

    CEF50 External battery build

    So what you're saying is I should have ordered the 700wh battery!
  3. hamncheez

    CEF50 External battery build

    My proposal is to leave the frame completely unmodified, and the auxiliary battery would connect directly to the charging port, which is again unmodified, so the power goes into the main battery. I've tested mine with the supplied charger, the motor still turns on and runs when external power...
  4. hamncheez

    Shenzhen Zhaosheng Carbon CEF50 lightweight using Bafang M820 motor (Specifications Thread)

    So this morning on my ride the pivot came loose and I lost all pivot hardware for the drive side rear chainstay pivot (the Horst link). Do I have to order a replacement all the way from China or are there Ace Hardware store solutions?
  5. hamncheez

    CEF50 External battery build

    I'm no electrical engineer, so feel free to correct me if I'm wrong. Wouldn't it be easier to just find an aliexpress water bottle battery that outputs under 50v peak, and just plug it straight into the stock DC barrel plug instead of attempting to power the motor directly with an auxiliary...
  6. hamncheez

    Bafang M820 CEF50 carbon frame maintenance/repairs/replacement parts thread

    Personally, I've had several bolts come loose- the motor mounts and the driveside rear chainstay pivot, which I lost this morning. Anyone know of how to get a replacement? Don't neglect your thread locker!
  7. hamncheez

    Bafang M820 CEF50 carbon frame maintenance/repairs/replacement parts thread

    First off, I love my CEF50: Of course this frame isn't perfect, headset routing sucks, I had to dremel a pit in the carbon to allow for the Cane Creek to fit, etc. However, the entire build including frame, motor, and battery is about $3k for me so thats not too bad, especially for a total...
  8. hamncheez

    Removing Bafang m820 25kph Speed Limiter

    Anyone? Curious as well. For use on private land only of course.
  9. hamncheez

    SCHWARZWILD Bafang M820 with LCE 930 frame

    So according to this guy, Light Carbon with Bafang M800 , LG 18650 cells have a nominal voltage of 3.7v, but a peak of 4.2v when fully charged. Do your 21700 cells stay close to 3.7v even when fully charged?
  10. hamncheez

    BMS recommendations for 11s 33 cell 18650s

    Hi everyone! I welded up a frame that I want to be dual purpose analog/ebike SL, and so I have an adapter for a trad bottom bracket or a mount for a Bafang m810. I need to build a DIY battery that can fit in the downtube, which is 48mm inner diameter. 4 18650s should fit, and that would require...
  11. hamncheez

    SZZS specific CEF50-main thread (initial builds and troubleshooting related only)

    Thanks, mine are the TRP rotors that are thicker than most. I just clamped it in there. We'll see how well it holds or if I get an error 21 in the middle of a ride...
  12. hamncheez

    SZZS specific CEF50-main thread (initial builds and troubleshooting related only)

    Hey guys! I know this is from like 40 pages back, but I'm trying to install my magnet speed sensor, but I have center lock rotors. Any suggestions?
  13. hamncheez

    Bafang m820

    Sorry if I missed it, but did we confirm if the m820 uses the same mounting dimensions as the older m800?
  14. hamncheez

    Bafang m510

    Thanks, these are better than I had before, but the resolution is very low and its hard to read the numbers. Do you have them in a higher resolution?
  15. hamncheez

    Bafang m510

    Hi Abordo, there is a communication or language barrier with the suppliers you are talking to. The M500, M600, and the new M510 all use the same mount and will all fit in the same frames.
  16. hamncheez

    Bafang m510

    Hey, I'm planning on welding up my own frame to put either an m510 or m600 in. Does anyone know where I can get the specs/measurements for the mount for this motor? I can't find it anywhere on the various Bafang websites and when I try and contact their sales I never get a response. I made this...
  17. hamncheez

    Vitus Mythique CYC X1 Stealth Motor Build

    On their website, CYC claim "Total weight with crankset & BB: 4.5kg". Does anyone know what the total weight, with crankset and BB, the Bafang m600 is? I'm building my own frame, and was planning on using both an m500 and m600, but heck this might be a better solution.
  18. hamncheez

    Light Carbon with Bafang M800

    @KaroKönig Awesome build! I want to do the same thing as you. Can I ask you a few questions? How do you get it to output 46.2 volts when you have 22 cells in pairs; doesn't that give you 11*3.7 = 40.7 volts? Which cells are you using, and have you weighed your battery? Finally, have you ever...
  19. hamncheez

    So I want to weld up my own steel ebike frame.....

    Sorry for the late reply; these are great! Only issue is that they don't carry Bafang, and I can't get Shimano, Brose, or Bosch to reply to my inquiries, let alone sell me one. You can find Shimano's E8000 on ebay, but its sketchy.
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