My eZuma project (Elektra)

Discussion in 'Electric Motorcycles' started by MJSfoto1956, Sep 16, 2018.

  1. MJSfoto1956

    MJSfoto1956 Been here awhile

    Joined:
    May 12, 2017
    Oddometer:
    487
    Location:
    Boston, MA
    Another issue: the stem attachment is quite different between the two. The Chinese use a pin through a hole in the stem (see previous photo). The Honda folks machine two grooves down alongside of the stem -- needless to say, one is much cheaper than the other to implement (can you guess which one?).

    If I decide to keep the Honda-style stem mount, then I will need a new stem head to bolt the handlebars to. Well, turns out there is a vendor for that right here in the USA. See: https://scooterswapshop.com/products/honda-elite-aero-bar-clamp. Not cheap, but at least I have options. Looks kinda sweet too.

    watermarked-22883266_917820795060444_1972775216_n_2048x.jpg

    watermarked-22883442_917820688393788_1182311971_n_2048x.jpg

    P.S. Note the machined pin in the stem shaft hole.
  2. MJSfoto1956

    MJSfoto1956 Been here awhile

    Joined:
    May 12, 2017
    Oddometer:
    487
    Location:
    Boston, MA
    I'm leaning towards splicing the GY6 stem top to the CH250 stem bottom -- it will make the top end trivial to implement, leaving only the mismatch on the bottom race & bearings to contend with. With a reinforced spline on the insides, the stem will be strong like ox.

    compare stems IMG_9562.v2.1500.jpg
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  3. MJSfoto1956

    MJSfoto1956 Been here awhile

    Joined:
    May 12, 2017
    Oddometer:
    487
    Location:
    Boston, MA
    This is what the top of the steering stem currently looks like. Additionally, I "believe" I have identified the specific set of bearings on AliExpress that are used for this particular stem (but as with all things Chinese one needs to verify all dimensions prior to ordering as there are dozens of subtle variations between vendors).

    As for the bottom of the stem, the hope is to keep it mostly "Honda" parts, but that remains to be seen. The key difference between the two is that the Honda shaft is 30mm in diameter while the Chinese clone shaft is 35mm.

    slice1.jpg
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  4. MJSfoto1956

    MJSfoto1956 Been here awhile

    Joined:
    May 12, 2017
    Oddometer:
    487
    Location:
    Boston, MA
    So the Elcon 1.8kW Level 2 charger finally arrived from AliExpress and I spent a few hours yesterday installing it under the seat bucket. Two 5" L brackets from Lowes did the trick. As you can see, the 240V inlet fits nicely in the old gas filler opening. I used 8AWG wire to connect the charger to the 240V inlet and 10AWG wire to connect to the battery via an Anderson plug. I'm now getting 24A charging versus 5A from my old el-cheapo Level 1 charger!

    Note that there are two versions of the Elcon: one for CANBUS and one without. I purchased the version without CANBUS. Also note that there is a little undocumented trick to getting this version of the charger to turn on: you need to short the last two pins together (see the the red patch cord in the photo). I'm likely going to add an on/off switch there "just in case" but for the most part, when I'm done charging I'm simply going to pull the 240V plug out and be done with it.

    IMG_9578.1280.jpg

    IMG_9577.jpg
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  5. MJSfoto1956

    MJSfoto1956 Been here awhile

    Joined:
    May 12, 2017
    Oddometer:
    487
    Location:
    Boston, MA
    Well the new Elcon 1.8kW Level 2 charger is the real deal. As my first test, the battery was at 48% charge. I gave it one hour on the new charger and the battery was at 91% when I pulled the plug. This is going to be a game changer for me. Going forward, I'll likely keep the battery between 60-75% and give it a quick 30 minute boost right before I venture out. So far, I'm a believer.

    IMG_9601.combo.jpg
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