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  1. zro-1

    nominal vs. peak - is it just marketing fluff?

    So I've noticed a pattern amongst commercial ebikes where the motor power listed is often something like "nominal power" or "rated power" expressed in watts, and the battery capacity is often expressed in "max capacity" in watt-hours. I've also seen a few cases where "experts" on ebikes have...
  2. zro-1

    A very interesting light ebike

    With the sole exception of the very low EU-friendly power levels (and the price), I think this bike has every wish-list feature I could imagine http://desiknio.com/pinionurban/ pinion BB gearbox Gates carbon belt drive disk brakes internal battery minimal, stealthy looks very nice phone and...
  3. zro-1

    Advice needed - charger connector burned out

    Hey guys, I had an issue when I went to charge my battery. As soon as I touched the charger connector to the connector on the battery, there was a large spark and a pop and the connector got burned out. It actually vaporized the inner positive pole of the female barrel connector. For reference...
  4. zro-1

    Xiongda YTW-06 mini hub motor

    Xiongda has a relatively new hub motor available that's even smaller and much lighter than the Q100 but has a higher gear reduction which should provide greater torque at the same power levels. I didn't find any threads here discussing this motor, so I figured I'd start one. I think this motor...
  5. zro-1

    Wishlist: mini cycle analyst

    I love the feature set of the Cycle Analyst, but I really wish there was a "mini" option that didn't have as many connections and was about the size of a cycle computer. When I look at some of the displays that are available for some commercial eBikes, I wish that the Cycle Analyst was...
  6. zro-1

    Single-speed track stealth ultralight

    Hello ES peeps, I'm beginning my next ebike build. As reference, my first build is a FS Motobecane with a BBSHD and a plastic "shark" pack mounted on the downtube. It's a beast, both in looks and in power. I built it clean without any wires dangling around, but there's no fooling anyone that...
  7. zro-1

    Edison Bicycles promo video

    I hope this doesn't seem too promotional for this ES thread. I live in Atlanta and have admired Edison Bicycles (a local electric bike builder), even though I prefer building my own ebikes. The owner is super cool and had nice things to say about my ebike when I met him. I found this video they...
  8. zro-1

    Do you need a freewheel if you have a geared hub motor?

    This is probably a silly question, and I've tried searching to see if it's been asked and answered before, but didn't have much luck with the results. I am converting a single-speed bike that has a flip-flop hub—so I have both an 18T freewheel, and a 16T fixed gear. My question is that since a...
  9. zro-1

    Has anyone tried Bafang's 5v torque sensor?

    Hey gang, It's been a while since I've posted in here. I've been lurking, but haven't contributed much, for which I apologize. I'm building a new bike. It's going to be an ultra-minimal single-speed ebike. I'm using a q100h rear hub and a Phaserunner to control it. I chose those primarily for...
  10. zro-1

    Oops. I crossed my phase wires

    Hey guys, I'm hoping you can help me. I'm building an ebike, and I ended up crossing the blue and green phase wires from the controller to the motor. Typically when this happens, is it more likely that the controller is burnt out or the motor. I have fixed the wires, and the motor will run for...
  11. zro-1

    Kelly KEB72121E variable regen

    Hey people! First let me say I've been lurking here for a while just reading all the back topics and getting up to speed on some stuff. I want to thank all of you here for the amazing amount of knowledge and experience on this forum. I am blown away by the depth of skill and wisdom here. I have...
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