Share this on:
 Facebook
 Twitter
 Tumblr
 E-mail
78
VIEWS
 
RECOMMENDS
0
SHARES
About this iReport
  • Not vetted for CNN

    • Click to view Hightekbikes's profile
    Posted October 29, 2010 by
    Hightekbikes
    Location
    San Francisco
    Assignment
    Assignment
    This iReport is part of an assignment:
    Ebike hackers: Show off your hacks!

    More iReports you should see

    Dual Motor eBike

    By Hightekbikes  |  Posted October 29, 2010  |  San Francisco
     

    CNN PRODUCER NOTE     Hightekbikes says he spent between $1200 and $1500 building his bike and that he uses it for errands and fun.
    - Cody McCloy, CNN.com

    San Francisco has some very steep hills.  Most ebikes can't cut it.  A bike conversion with two hub motors works very well.  These are three prototypes that worked well on the hills up to a 20% grade.  With both wheels being powered, the efficiency of each motor is increased.  Two of the bikes had dual direct drive motors, and the other had one direct drive and one geared motor.  The direct drive motors are good for high power applications, and geared motors, with a 4:1 internal gear ratio, are good for low speed torque.  Each motor was powered by a 36V Lithium battery pack.  Total power was about 1500 watts.

    What do you think of this story?

    Select one of the options below. Your feedback will help tell CNN producers what to do with this iReport. If you'd like, you can explain your choice in the comments below.
    Be and editor! Choose an option below:
      Awesome! Put this on TV! Almost! Needs work. This submission violates iReport's community guidelines.
    More from this assignment - Ebike hackers: Show off your hacks!
    On CNN
    NoPonder eBike
    On CNN On CNN
    NoPonder eBike test ride before paint
    On CNN
    Ebike using RC parts ?
    See all 28 iReports
    Add your Story

    Comments

    Log in to comment

    iReport welcomes a lively discussion, so comments on iReports are not pre-screened before they post. See the iReport community guidelines for details about content that is not welcome on iReport.

    Add your Story Add your Story