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  1. #1
    Senior Member DrkAngel's Avatar
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    Lightbulb Simple - Quick - Cheap Mods ... Regearing the eZips For More Speed

    OEM
    The eZips, Trailz etc., have an oem 15-16mph capability, with some slight assist to ~18mph.

    16T ACS Southpaw Mod - $20
    Simply replacing the oem 20T motor side freewheel with an ACS SouthPaw 16T.
    This increases speed to ~20mph, a 25% increase.
    Torque is reduced 20% at 0mph, but loss decreases till torque actually increases at above 10mph!

    12T Motor Sprocket Mod - $24
    A "simple" regearing.
    Merely replace the oem 9T motor sprocket with the 12T.
    This will give you a 33.3% speed increase.
    A reasonable expectation of 20mph - motor only.
    With some assist to 24mph.

    15T Motor Sprocket Mod - $12

    A "simple" regearing.
    Merely replace the oem 9T motor sprocket with the 15T.
    This will give you a 66.7% speed increase.
    A substantial assist of 25mph - motor only? ... possibly.
    With some assist to 30mph.
    "Best of all! ... I get to play. ... http://www.bikeforums.net/attachment...&thumb=1&stc=1
    Sorry! ... I'm addicted to improving enhancing.
    With side orders of inspiring enlightening!"

    Acronyms

  2. #2
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    Nice white paper report DrkAngel!

    Quote Originally Posted by DrkAngel View Post
    OEM
    16T ACS Southpaw Mod - $20
    Simply replacing the oem 20T motor side freewheel with an ACS SouthPaw 16T.
    This increases speed to ~20mph, a 25% increase.
    Torque is reduced 20% at 0mph, but loss decreases till torque actually increases at above 10mph!
    The "standing start" decrease in torque would be perfectly acceptable with me due to the fact that I'm a "peddle it to get going" type of e-bike rider.

  3. #3
    Senior Member DrkAngel's Avatar
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    Lightbulb More Speed!

    Of course ... you could add a 12T or 15T mod to the 16T ACS mod.

    But you must expect to provide substantial pedal assist, or you are liable to be sadly disappointed.

    16T + 12T = 25mph (Some assist till 30mph)

    16T + 15T = 30mph? (Some assist till 37.5mph)
    Might be victim to a negative return on speed! (motor only)
    Ideal for the cyclist capable of constant and substantial pedal assist.
    Even with the 11T 7speed freewheel, assist past 30mph would require upgrading the front sprocket from 44T to ... 52T? Simple upgrade.
    "Best of all! ... I get to play. ... http://www.bikeforums.net/attachment...&thumb=1&stc=1
    Sorry! ... I'm addicted to improving enhancing.
    With side orders of inspiring enlightening!"

    Acronyms

  4. #4
    Senior Member bluegoatwoods's Avatar
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    Hello, DrkAngel.

    I recognize you from es. You're helpful to folks over there. I'm glad to see you here.

  5. #5
    Senior Member DrkAngel's Avatar
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    Lightbulb

    Originally Posted by DrkAngel
    OEM
    16T ACS Southpaw Mod - $20
    Simply replacing the oem 20T motor side freewheel with an ACS SouthPaw 16T.
    This increases speed to ~20mph, a 25% increase.
    Torque is reduced 20% at 0mph, but loss decreases till torque actually increases at above 10mph!
    Quote Originally Posted by FMB42 View Post
    Nice white paper report DrkAngel!



    The "standing start" decrease in torque would be perfectly acceptable with me due to the fact that I'm a "peddle it to get going" type of e-bike rider.
    "Best of all! ... I get to play. ... http://www.bikeforums.net/attachment...&thumb=1&stc=1
    Sorry! ... I'm addicted to improving enhancing.
    With side orders of inspiring enlightening!"

    Acronyms

  6. #6
    Senior Member DrkAngel's Avatar
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    Lightbulb 13T Mod

    Great simple upgrade for eZip - iZip external non-hub motor.
    13T Sprocket Upgrade - $18 includes shipping
    Plug-n-Play - except you will need longer chain


    Good fit, good alignment, just lengthen chain and all set to go!
    OEM eZip top speed @24V w/9T sprocket = 15mph.
    15mph / 9T x 13T = 21.66mph (20mph USA "legal" - reasonable expectation)

    I emailed "Jon", "Contact US", requesting a quantity purchase with shipping discount.
    Was sent PayPal Invoice.
    Very good shipping discount on quantity = 4.
    $50 for 4 = $12.50 each shipping included!
    "Best of all! ... I get to play. ... http://www.bikeforums.net/attachment...&thumb=1&stc=1
    Sorry! ... I'm addicted to improving enhancing.
    With side orders of inspiring enlightening!"

    Acronyms

  7. #7
    Senior Member
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    DrkAngel, a friend has a Currie bike and got a 24v duct tape battery for it. Upon hooking up the wiring, with an inline fuse, it will go about a 100 ft. and then shut down. If he takes out the fuse and puts it back again it will do the same thing. I am thinking it is a controller issue but am not familiar enough with the Currie system in regards to the controller? Any help appreciated and thanks in advance!

  8. #8
    Senior Member DrkAngel's Avatar
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    Quote Originally Posted by Mabman View Post
    DrkAngel, a friend has a Currie bike and got a 24v duct tape battery for it. Upon hooking up the wiring, with an inline fuse, it will go about a 100 ft. and then shut down. If he takes out the fuse and puts it back again it will do the same thing. I am thinking it is a controller issue but am not familiar enough with the Currie system in regards to the controller? Any help appreciated and thanks in advance!
    Sounds like ...
    Battery is too small?
    Full throttle drains too fast,
    voltage sags below controllers LVC (Low Voltage Cut-off),
    LVC disables controller,
    removing fuse resets controller.
    1. Test by moderating throttle ... a very gentle, partial throttle slowly increasing ...
    2. Place voltage meter on battery, observe voltage sag as you increase throttle. Shutdown should continually occur as battery "sags" to some specific voltage.
    "Best of all! ... I get to play. ... http://www.bikeforums.net/attachment...&thumb=1&stc=1
    Sorry! ... I'm addicted to improving enhancing.
    With side orders of inspiring enlightening!"

    Acronyms

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