My eZuma project (Elektra)

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

  1. MJSfoto1956

    MJSfoto1956 Been here awhile

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    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

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    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

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    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

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    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

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    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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  6. roadpupp

    roadpupp Adventurer

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    Wow, Thanks for sending me here. Lots of info. Harry at QS motors suggested the APT controller but I see how big it is and wonder how I would ever mount it to my Grom Clone.
    Sad to see the power velocity with BT died. They seem to be out of business but I am holding out hope of finding a controller with a phone app.
    Seeing your battery upgrade and BMS upgrade makes me want to follow suit! Thanks so much.
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  7. MJSfoto1956

    MJSfoto1956 Been here awhile

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    What makes you think PowerVelocity is out of business?

    M
  8. roadpupp

    roadpupp Adventurer

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    I sent a few emails and only a few pages of the site work. Sounds like that controller didn’t work out for you but it seemed like a good option. I am not sure where I could stuff the APT you have on my Grom clone.
  9. roadpupp

    roadpupp Adventurer

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    Actually I got an email from him today! I am curious what issues you had with the PV controller and if you have any advice for me. I am trying to avoid the APT96600 because it is so massive. What failed on the PV controller? Would you still recommend them?
    Thanks
  10. MJSfoto1956

    MJSfoto1956 Been here awhile

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    I had trouble with their previous model controllers which were simply not up to the task (they were designed more for eBike usage). His new controller is likely to be a good match for the QSmotor 8000W V4. Given that I now have a decent controller that works well, I doubt I will "upgrade" to his new controller any time soon. But if I were in the market, PV would be at the top of my list.
  11. roadpupp

    roadpupp Adventurer

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    Thanks so much!!
    Glad to hear this. I love the interface as most of the other controllers are just about shooting in the dark with programming.
    He sells a 7K controller and a 12K. $100 delta so I am leaning toward the 12K, though 7K would be almost enough.

    Best
    Roadpupp
  12. MJSfoto1956

    MJSfoto1956 Been here awhile

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    Whatever you do, make sure you OVERSIZE your controller compared to your motor. 12k for sure.
  13. roadpupp

    roadpupp Adventurer

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    Thanks. I am supposed to be on the list for one of the Power Velocity new controllers so planning to stuff that in. Still need to do some mocking up of battery Packs for this system. Got a set of Pirelli's mounted on the 13" 8K motor, just need time and cooler weather to get some wrenching.
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  14. MJSfoto1956

    MJSfoto1956 Been here awhile

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    Be sure to let us know how it goes!
  15. MJSfoto1956

    MJSfoto1956 Been here awhile

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    Also, what wind did you order from QSmotor? (they offer several different types based on usage, top speed, weight, etc.)