Electric Motorcycle conversions!

Discussion in 'Electric Motorcycles' started by MATTY, Jan 13, 2018.

  1. voltsxamps

    voltsxamps Advolturer

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    Build your own DIY fat tire electric bicycle for just $600
    Micah Toll

    - May. 10th 2018 3:01 pm ET

    [​IMG]

    The first thing you’ll need is a basic level of handiness. You don’t have to be a mechanic, but as long as you’re comfortable turning a wrench and have the necessary skills to swap a flat tire on a bicycle, then you’re probably ready to build your own e-bike.

    Next, you’ll need three basic components:

    • Fat tire bicycle (the donor bike)
    • Fat tire electric bicycle conversion kit (includes everything except the battery)
    • Battery

    [​IMG]

    Full article:
    https://electrek.co/2018/05/10/build-diy-fat-tire-electric-bicycle/
    #21
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  2. ctromley

    ctromley Been here awhile

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    Did anyone notice that 1 kW hub motor (non-street legal BTW) is laced to the fat rim using a radial or zero-cross pattern? Really bad idea. One has to wonder what the manufacturer was thinking, or if they were thinking, or if they are capable of thinking. Should be an interesting way to see how good their customer support is though....

    EDIT: BTW, that radial-laced hub motor/wheel is intended to go on the front of the fat bike along with a disc brake. So it will see big torque in both directions. Any bets on how long the spokes last?
    #22
  3. mjc506

    mjc506 Been here awhile

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    Probably longer than the eyelets in that rim:lol3
    #23
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  4. 81forest

    81forest ADDRider

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    It’s super hard to do a cross spoke pattern with such short spokes; the hub is huge and the angle gets all extreme where the spoke enters the rim. Radial laced was maybe not the best idea though...
    #24
  5. T.S.Zarathustra

    T.S.Zarathustra Adventurer

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    This looks really nice. Do you have a estimated price for the conversion? I assume used battery packs. What do you use to charge it?
    #25
  6. TorkeFUN

    TorkeFUN Adventurer

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    Grand Rapids MI
    Hey,

    The estimated build cost was about $4,500.

    It actually is a "used" battery. but I believe the Nissan Leaf these cells were removed from was totalled in an accident with less then 7000 miles. Therefore lightly used, and only $800 for the pack.

    I use "Meanwell" DC power supplies to charge the battery. They are remarkably durable and powerful, IP65/67 waterproof, and adjustable voltage and amperage. With the Meanwell "HLG-320" series I used 2 wired in series for a 640 watt charger that sits neatly under the bike's battery. There are also 2 cooling fans that draw heat away that are powerd by the small Meanwell LPV-20-12 unit. this supplies 12V 20W from the charge port of the bike. So when plugged in the fans kick on automatically.

    The Meanwell units can be wired in Series and/or parallel to provide for additional voltage and current needs. Search "HLG-320H series PDF" and you'll know anything you'll need to know about these things.

    In my case I used 2 "HLG-320H-42A" units wired in series. I adjusted both to 45.5V for a total of 91 volts. The battery is charged to 89V when full, the extra 2 volts helps push current until the end.

    _storage_emulated_0_DCIM_Camera_20160608_210419.jpg
    #26
    flyingwombat, voltsxamps and pops like this.