Genesis [with Alfine 8 hub gears] conversion

Discussion in 'Electric Bikes' started by DaddyPaddey, 23 Apr 2019.

  1. DaddyPaddey

    DaddyPaddey Well-Known Member

    Location:
    Fareham
    Is it possible/practical to convert my Day One to a Steps system? I really don't want a hub motor, so if the Steps is a 'no go' is there an alternative?
     
  2. keithmac

    keithmac Über Member

    Any pics, STEPS requires a specific frame to mount the motor.

    I built a Nuvinci hubbed bike with a TSDZ2 mid mount motor and it goes well.
     
  3. Ffoeg

    Ffoeg .

    Location:
    The Isle of Carl
    I've put a TSDZ2 motormot an Alfine8 hubbed bike and it too works very well.
     
  4. CXRAndy

    CXRAndy Guru

    Location:
    Lincs
  5. Ffoeg

    Ffoeg .

    Location:
    The Isle of Carl
    Dillinger are bloody expensive!

    ...And bafangs aren't very smooth in the way they deliver thier power due to the cadence sensor.

    DZ2s are much smoother as they use a torque sensor and have a much more natural feel
     
    Goggs and keithmac like this.
  6. keithmac

    keithmac Über Member

    That's why I chose TSDZ2, reacts like a bike just with more oomph.

    Steps/ Bosch etc all use torque sensing.
     
  7. OP
    OP
    DaddyPaddey

    DaddyPaddey Well-Known Member

    Location:
    Fareham
    That's very interesting. Where do you suggest I would go for the battery for a TSDZ2? I saw mention that with a crank based system you can only have one front chainring. Is this correct, and why?
     
  8. keithmac

    keithmac Über Member

    I only have one front chainring with the Nuvinci.

    You could possibly have a double front with a bit of thought but with a hub gear based bike most like a simple chainline.

    Battery wise I bought a 36v 15ah "Shark" pack, Samsung celled.

    You need to choose what voltage you want, 36v and 48v most common. My Gtech and TSDZ2 are both 36v. 20190108_204724.jpg 20190108_205151.jpg 20190226_134342.jpg

    Mine's a work in progress, put bigger disks on a few weeks back.
     
  9. Ffoeg

    Ffoeg .

    Location:
    The Isle of Carl
    You can get the TSDZ2 with a double chainring, but I'm not sure how happy an Alfine would be running one, since Shimano designed to be just a 1x. You'd need to get creative with the chain tensioner. Even if it you could make it work I don't think much would be gained running it as a 16 speed bike since the standard 8 gearing gives a useful spread of gearing.

    With my DZ2 running 42:18 gearing (chainring/sprocket) I hardly ever use the lowest 3 or 4 gears and they are only really there as 'get me home gears' for when the battery goes flat, and pedalling a dead 20kg ebike is no fun :sad:. So in effect it's a 4 or 5 speed with motor assistance. The 42/18 tops out at about 25mph, which is enough for ripping round town - I could go faster but I'm not one for peddling like a Tw4t.

    I'd like to go a bit higher with the gearing but Aflines like to stick as close to 2:1 ratio as possible (ideally 42:20) and can be prone to damage 'over torquing' if you go outside the recommended ratios. 42:18 works seems to work OK

    My battery is known as a 'hailong' (due to the shape of the case), and is a bit smaller than the above mentioned shark. it's 36v 15ah and was from http://eclipsebikes.com/product_info.php?products_id=107

    And I got my motor kit from a reliable firm in China, and it's delivered from their warehouse in Germany, so no silly import taxes :smile:

    @DaddyPaddey Do you have flats or drop bars?

    oh and piccies...

    eAlfine front (Medium).JPG eAlfine side (Medium).JPG
     
    keithmac likes this.
  10. jowwy

    jowwy The bearded Powerhouse

    i do love the look of this bike - its a great self build
     
  11. OP
    OP
    DaddyPaddey

    DaddyPaddey Well-Known Member

    Location:
    Fareham
    Change of plan. Decided to put elec assist on the 2 wheel 'bent. Will report back in due course.
     
  12. Ffoeg

    Ffoeg .

    Location:
    The Isle of Carl
    Cheers :cheers:, it's a hoot to ride too

    I think the colour helps. it looks even better in the flesh
     
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