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  1. S

    Materials for DIY Battery Bag

    I'm looking for advice about material for a DIY battery bag. Battery weight will be about 10kg. Materials I've seen recommended for a DIY bag are: X-PAC V21 for the main panels Cordura OR nylon webbing for contact points against the frame Sewn together with nylon upholstery thread Will...
  2. S

    Blackburn Outpost Elite Frame Bag

    Has anyone used a Blackburn Outpost Elite Frame Bag for 65mm wide batteries? Blackburn advised that the bag is 57mm wide. I'm wondering if I could safely fit a pack about 70-75mm wide by bulging the bag out a bit at the sides?
  3. S

    500C Display + 72v Battery?

    Can the 500C display be used to adjust settings when used with a 72v nominal battery? It seems that the 500C can't display volts over 60v, but if I only want to control the motor functions will the 500C work with a high voltage battery?
  4. S

    Bafang M625 BBSHD 2021 - 3rd Party Options

    Is the Bafang M625 able to be used with 3rd party controllers, batteries, or displays?
  5. S

    Mid-Drive Drivetrains for ~1kw

    In regard to long term running costs & ability to handle power without breaking, are there any clear winners for drivetrains around 750w-1500w? I have been looking into Shimano LinkGlide and Shimano NEXUS Inter-5E. Rohlhoff is out of my budget.
  6. S

    LiFePo4 15s Charger?

    What chargers will work with LiFePo4 in 15s configuration? Will any 54.75v lithium charger work? Thanks!
  7. S

    Quick Removal for 860c Display?

    How easily can the 860c display be removed & re-installed, especially from it's bracket? I need to be able to park in public without it being pinched :wink:
  8. S

    Mid Drive Motors - Crank vs Chainring RPM

    When not using throttle with Tongsheng TSDZ2 and Bafang BBSxx mid-drive motors, do the chainrings spin at the same RPM as the cranks but with additional torque supplied by the motor? Is it possible to configure the chainring RPM as a function of crank RPM?
  9. S

    Triangle Bag recommendations?

    What would you recommend for a decent quality triangle bag with as much space for batteries as possible in my main triangle? The inner dimensions of my main triangle are 40cm seat tube, 50cm top tube, 60cm down tube. Top tube / seat tube angle looks to be 90 degrees.
  10. S

    Aluminium Triangle Case build, minimal tools?

    I'm looking into seeing if a triangle battery case is something I can put together, and I'm probably going to be limited to using hand tools. Features I'm looking for are: Accommodate ~ 15kg Secured to frame as much as possible for public parking Hinged access panel with lock Weather...
  11. S

    Jumbo Shark DP-9 32650 Build

    I'd like to put 32650 cells in a hard case that is sold as being able to hold up to 91 x 18650s. I've seen it called Jumbo Shark or Reention DP-9. It think I would have to 3D-print a new cell grid so that it has 32mm slots. Could anyone give me a hand? I think the first thing I'd need is the...
  12. S

    Cell Value & Life?

    Is there data on battery cell value over the long term? Someone mentioned cost per Ah per year in another thread, that seems like a pretty good metric. Number of useful also cycles seems like a useful thing to know. The LG MJ1 has been recommended a couple of times from what I can see, are...
  13. S

    TSDZ2 52v battery on 48v motor with 860c and OSF?

    Do I need (or is it advisable to get) the 52v version of the TSDZ2 to run a 52v battery on the 860c display using open source firmware, or is it simple to enable a fully charged 52v battery on the 48v version of the motor using OSF?
  14. S

    TSDZ2 Simultaneous Throttle + Overheat Protection?

    Hi, I've been reading about the TSDZ2 and it seems that with stock hardware alone it isn't possible to have thermal protection to the motor and a separate throttle at the same time. The thread https://endless-sphere.com/forums/viewtopic.php?t=104605 mentions the TSDZ-ESP32 project, I think as a...
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