Anyone tried a Sunup eco spoke dynamo? Esp. on internal gear

edited January 2012 in Accessories
http://swhs.home.xs4all.nl/fiets/tests/ ... ex_en.html looks like an interesting idea to get a dynamo that doesn't rely on tire friction, but I'm wondering whether it'll fit properly on my trike. (I'd like to have a dynamo, although I'm trying to avoid tire friction dynamos of either the bottle or the tread kind, and I know hub isn't an option on any TerraTrike.)

Has anyone tried one, and if so, have they had any success?

Thanks!
2011 TerraTrike Path 8 | bone stock for now...

Comments

  • I too am interested, but have not gotten past how one would install a bottle-type dynamo to my Rover. If you learn more, please share?
    ---
    Peter_C
    TerraTrike Rover W/N360 by NuVinci
    http://s1103.photobucket.com/albums/g475/Peter_CC/Peter_C Trike Album/
    
    (copy and paste into your browser) to see ---> My Trike Photos
    ---
  • Please look at the discussion on dynamos, posted on March 29, 2017
    About the picture.....<div><br></div><div>I got here on my 12th Hand Assembled Frame of December 1967 Schwinn Paramount, because TeraTrikes were not then allowed in the week long charity cycling event in the Colorado Rockies..  <div><br></div><div>T<span style="font-size: 10pt;">hey are now, and this is where I'll be in June 2017</span></div></div>
  • I emailed SunUp and they said it would not work for the NuVinci hubs. We can still build our own versions if we're willing to take the time for it.
  • Here is our report on SunEco rear wheel,
    spoke mounted alternators and how we got there.

    I'm part of a two person team from the Washington, DC
    Metro, that has been working diligently for the last year and a half,
    toward solving the Terra Trike on board dynamo "problem."

    For more about our progress,  on this site,
    go in our posts from a few days ago, reporting our findings to date,
    under "dynamos"

    As part of our work, we've spent some time evaluating,
    as in testing in our garage lab and brutally testing out on our 32 mile daily
    test course (see our post) the SunUp "platform" as it comes in two
    models (depends on output).

    The SunUp Eco is actually representative of a genre of
    interact with your spokes Dynamos from the far east and or US, mostly
    California and or some Industrial Design school's "KickStarter"
    projects that "solve" "you don't want a dynamo front wheel for
    your bike" which for us with trikes becomes the "you can't
    inexpensively fit a dynamo to the front wheels or the rear wheel of a
    trike" problem.

    Note that in the two wheel bike industry there is a
    related genre that does the same thing as the Sun Up Eco, but on your front
    wheels,  all because  you don't want to buy an under $150 dollar
    dynamo with typically a 700 size front wheel combination from an unknown
    manufacturer in the far east for your bicycle.

    And we have tested all that we could buy (almost 20)
    of the front and rear spoke mounted dynamos, on the rear wheels and even,
     with a lot of hacking and custom brackets, on the front wheels of Terra
    Trike Sportsters.

     The problem with any of them, including the SunUp Eco,
    is that you end up affecting the integrity of your spokes, AND you end up
    with CONSIDERABLE drag + NOISE. 

     This is because the SunUp Eco as well as
    others in that design genre,  is actually a
    tiny alternator (we've taken them apart) that is driven VERY FAST by a
    whinny gear train to do the spinning very fast, of a  tiny set of copper
    coils interacting with a tiny magnetic field. This is the
    inexpensive solution to your typical Sanyo, Shimano, Sturmey-Archer,
     Shutter etc, HUB Dynamo spinning a great deal slower, with a wide
    set of copper coils interacting with a wide magnetic field. In theory, you
    should be able to get same power output from either design model.

     But the Sunup design genre is not long term
    durable, because of the continued stresses of
    being driven to the limit of stamped metal and plastic
    gears.  

    When you take a bike wheel, with multiple
    SunUp Ecos installed over a period of months, as we have done in our
    garage,  and run it with an electric motor, and expose it to all
    manner of heat and cold and moisture and dry, you eventually,
    and sometimes in not a lot of time, run out of lubrication in that
    whinny gear train and thus it fails.

     If you can stand the noise.

    So we are making progress, as we just mounted our third
    generation improved design today, and have started testing.

    Stay tuned, as we progress.





    About the picture.....<div><br></div><div>I got here on my 12th Hand Assembled Frame of December 1967 Schwinn Paramount, because TeraTrikes were not then allowed in the week long charity cycling event in the Colorado Rockies..  <div><br></div><div>T<span style="font-size: 10pt;">hey are now, and this is where I'll be in June 2017</span></div></div>
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