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  1. Projectitis

    Can I reverse the chainring on BBS02 for positive offset?

    Hi all, I'm working on a custom build (recumbent trike style) which has a standard width (68mm PF30) bottom bracket at the front, and a 170mm fatbike axle at the rear. This is being powered by a BBS02 middrive motor. I need to ensure the chain clears the rear wheel with a nice direct...
  2. Projectitis

    Max kingpin inclination on recumbent with fat wheels

    Hi all, I'm currently designing the steering knuckles for a recumbent with 20" fat wheels. The hubs are 150mm (no dishing - i.e. tyre in center). The outside tire is 550mm diameter (around 21.6"). To get center-point steering with no scrub, I need an inclination of around 20 degrees. I've...
  3. Projectitis

    Left and right handed disc calipers on recumbent trikes?

    Hi all, How are the front disc brakes on the right and left sides of recumbent trikes designed? Presumably both sides need to be mounted so that they contact the disc in the same place (e.g. The right side can't be mounted at the top of the disc, and the left at the bottom). Are calipers...
  4. Projectitis

    What size is the ELF frame tubing?

    Hi all, I could hunt down a local ELF owner and take a few measurements myself, but I'm in New Zealand and I'd be surprised if there was more than a single one in the whole country :) I've found several photos (attached), some nice quality, of the Organic Transit ELF. However, it is difficult...
  5. Projectitis

    Mid-drive daily commuter with style (and a trailer)

    Hi from New Zealand! Finally finished my eBike build! I use it every day for commuting, most of the time towing one or two children (30 to 50kg total) in the trailer. The details: - 48v 750w bafang 8fun mid-drive (BBS02) - 20ah aluminium case rack mount battery - 48T chain wheel - c963 display...
  6. Projectitis

    48v high current switch

    Hi all, Sorry if this has been asked before - I have searched and not come up with anything yet, so feel free to point me at other threads if this is a duplicate. I want to add a switch between the battery/BMS and the rest of the circuit (e.g. controller, 12v aux system) to kill all power when...
  7. Projectitis

    The search for 36h rims (16" - 20")

    Hi all, I've been searching google for a long time to try to find suitable 36h rims for an escooter build. I'm planning on using the Crystalyte crown motor, which has as OD of 250mm, so the rim would have to be big enough that enough spoke length is still available for a safe and solid wheel...
  8. Projectitis

    New Zealand represent

    Hi all, Interested in hearing from other New Zealanders who frequent these forums! What are the good suppliers (local or otherwise) for ebike stuff? - especially now with the import rules on batteries (dangerous goods?). Are there any local forums/sources of info? I ride a scratch-built...
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