1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

8fun crank drive kit

Discussion in 'Electric Bicycles' started by shemozzle999, May 3, 2013.

  1.  
    shemozzle999

    shemozzle999 Pedelecer

    Joined:
    Sep 28, 2009
    Messages:
    1,590
  2.  
    oigoi

    oigoi Finding my (electric) wheels

    Joined:
    Apr 14, 2011
    Messages:
    421
    Looks a good idea, just need someone to sell one at a time not got much use for 50! Maybe 8fun uk will get some in
  3.  
    shemozzle999

    shemozzle999 Pedelecer

    Joined:
    Sep 28, 2009
    Messages:
    1,590
    Already on the case oigoi. I have approached my Chinese contact and awaiting a reply.
  4.  
    hech

    hech Pedelecer

    Joined:
    Oct 29, 2011
    Messages:
    346
    Location:
    argyll
    A kit like that could become very popular indeed, especially if it slots neatly into the bottom bracket and the motor could be placed inside the triangle. An LCD which enables you to enter a number of parameters into the controller eg voltage and max current would be extremely useful. The internal reduction should be much quieter than chain drives like GNG and it has a double clutch to allow freewheeling and reduce drag. It says it can take 24v or 36v, might even stretch to 48v? It is discretely painted black and has plugs rather than connectors.
    In short, this kit could outsell Bosch, someone really should check it out! :)
  5.  
    shemozzle999

    shemozzle999 Pedelecer

    Joined:
    Sep 28, 2009
    Messages:
    1,590
    I have been sent the pdf data sheet but it is 1.9mb so too large to download here, need a site to host it, can anyone help?

    My contact can supply but needs firm orders.
    Last edited: May 3, 2013
  6.  
    GaRRy

    GaRRy Pedelecer

    Joined:
    May 18, 2012
    Messages:
    1,019
    Location:
    Tamworth
    Any idea roughtly on price ?
  7.  
    jackhandy

    jackhandy Pedelecer

    Joined:
    May 20, 2012
    Messages:
    1,533
    Location:
    the Cornish Alps
    Perhaps d8veh'll slip one in his suitcase....
  8.  
    flecc

    flecc Member

    Joined:
    Oct 25, 2006
    Messages:
    27,145
    Send it to me and I'll host it on my website and publish the link here later:

    flecc@tinyworld.co.uk
  9.  
    shemozzle999

    shemozzle999 Pedelecer

    Joined:
    Sep 28, 2009
    Messages:
    1,590
    Thanks flecc,

    English version to follow.

    Early ballpark price $350 excluding delivery.
  10.  
    flecc

    flecc Member

    Joined:
    Oct 25, 2006
    Messages:
    27,145
  11.  
    Fordulike

    Fordulike Pedelecer

    Joined:
    Feb 26, 2010
    Messages:
    911
    Looks exciting, should have Bafang quality too.

    Mmmmmm, so tempting to go mid-drive.... decisions decisions :p
  12.  
    Geebee

    Geebee Pedelecer

    Joined:
    Mar 26, 2010
    Messages:
    816
    Location:
    Australia
    36v at 15 amps, 3.7 kg, sounds promising.
    Last edited: May 4, 2013
  13.  
    trex

    trex Pedelecer

    Joined:
    May 15, 2011
    Messages:
    2,202
    80N torque (Bosch 55N), 83RPM, 3.7kgs, $300 each.
    It could be the new kid on the block.
  14.  
    Geebee

    Geebee Pedelecer

    Joined:
    Mar 26, 2010
    Messages:
    816
    Location:
    Australia
    Missed the cadence, very nice more in the "cyclist" range.
  15.  
    shemozzle999

    shemozzle999 Pedelecer

    Joined:
    Sep 28, 2009
    Messages:
    1,590
    I would be disappointed if I don't hear of a new triple drive Rocky Mountain appearing in Bristol but I think he would have to find a way of mounting his suitcase on the rear rack to hold all the batteries.

    aka: old watch sketch from Morecambe and Wise show.

    Its great how there is a broad mixture of members with different goals, the first thing I noticed about the kit is it has a throttle;)

    Another photo of the kit received:

    8fun.jpg
    Last edited: May 4, 2013
  16.  
    trex

    trex Pedelecer

    Joined:
    May 15, 2011
    Messages:
    2,202
    The kit comes with 36V 15A controller, possibly to be compatible with EN15194. It needs a 20A+ controller really - same power as d8veh's BPM kit.
  17.  
    Fordulike

    Fordulike Pedelecer

    Joined:
    Feb 26, 2010
    Messages:
    911
    If the controller can handle 48v, then that would boost the performance to a decent level.
    Let's hope this kit doesn't go the way of the GNG crank drive, which turned out to have a fair few teething problems.
    Need this kit to be robust from the word go ;)
    Last edited: May 4, 2013
  18.  
    Marctwo

    Marctwo Finding my (electric) wheels

    Joined:
    Dec 1, 2012
    Messages:
    182
    This would look nice on my sirocco. Should do close to 25mph unrestricted (?) with 11t on the wheel.

    Didn't notice any mention of PAS...

    Although it seems convenient to have the controller in the motor housing, I'd be a bit concerned about heat. And replacing the controller may not be so simple.
  19.  
    oigoi

    oigoi Finding my (electric) wheels

    Joined:
    Apr 14, 2011
    Messages:
    421
    My cyclone motor is the same, controller in the motor housing.Simplifies the wiring, the controller can be replaced but needs a bit of soldering and needs a supplier of the controller circuit board. Some people who have cyclone controllers fail wire into the hall sensors in the motor and use an external controller

    Looks like it has some fins on it's housing so shouldn't be too bad with the heat but depends how much power you're putting through it I guess, the cyclone has no fins as standard but they are sold as an accessory, which I have fitted and have not problems with cooling so far
  20.  
    hech

    hech Pedelecer

    Joined:
    Oct 29, 2011
    Messages:
    346
    Location:
    argyll
    Says it's brushless but looks like just two wires, black and red, from the motor suggesting it is a brushed motor, wonder if shemozzle can confirm?
    It does seem to have PAS and throttle. Probably similar to the GNG2 in power output but without the chain therefore quieter and cleaner.
    Let's hope at $300 that includes delivery to doorstep!

Share This Page