Thinking of upgrading HS 4 transmission

Discussion in 'Transmission / Drivetrain' started by ezrider, May 16, 2018.

  1. ezrider

    ezrider Member

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    Saw the bikeberry dual chain trans promo vid. Curious to hear anyone else's experience with this transmission. The factory equipped HS 4 single chain I got now has nice top speed, but really sucks on takeoff. Willing to sacrifice some speed, if I can get some semblance of reliability.
     

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  2. bakaneko

    bakaneko Active Member

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    That one does not fit if you have the hoot transmission. You can double check with bikeberry but I am certain. Your other option is the 4G
     
  3. CrazyDan

    CrazyDan Well-Known Member

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  4. ezrider

    ezrider Member

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    The BB promo vid sez it DOES FIT:

    Comparison Review

    Yeah, same number of mounting holes, spacing etc. Anyway, what I got now, I mean there's just no friggin torque at all. Almost seems the bike is rolling backward when I attempt to climb hills.
     
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  5. ezrider

    ezrider Member

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  6. bakaneko

    bakaneko Active Member

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    buy it and see. i would be curious. you know you can always try a 50T+ rear sprocket. cheaper too
     
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  7. Tom from Rubicon

    Tom from Rubicon Active Member

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    The Bike Berry Huasheng engine develops a surprising amount of torque when broke in.
     
  8. ezrider

    ezrider Member

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    Better still, the bikeberry trans has more gear teeth..and consequently..more torque.
     
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  9. Tom from Rubicon

    Tom from Rubicon Active Member

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  10. KCvale

    KCvale Motorized Bicycle Vendor

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    [​IMG]

    I have to just smile at their exhaust optional upgrade...
    A stock chrome exhaust stuck on the end of the can exhaust.
    Other than that a fine direct direct drive MB.
     
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  11. Tom from Rubicon

    Tom from Rubicon Active Member

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    Even though the BikeBerry trans. has served me well but. After I finish my Sportsman Flyer 80, my Huffy is getting a 4G.
    One thing about the BBR trans. is it gets pretty warm after a twenty mile ride.
    I am expecting the 4G to run cooler and quieter. Wish someone would develop a belt final drive. That would have many advantages.
    Tom from Rubicon
     
  12. KCvale

    KCvale Motorized Bicycle Vendor

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    Well, you can size a chain, you can't size a belt and I did so much cutting I bought the right tools for breaking chain and cutting cables.

    The 4G comes in flavors, 20T to an 80t 4:1 reduction for more speed direct drive, for my shifters I use 20T to a 100T freewheel for 5:1 reduction and gearing does the rest.


    I
     
    Last edited: May 21, 2018 at 6:56 PM
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  13. ezrider

    ezrider Member

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    Just where do you get these kinds of transmission shifters ??

    _
     
  14. Tom from Rubicon

    Tom from Rubicon Active Member

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  15. KCvale

    KCvale Motorized Bicycle Vendor

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  16. KCvale

    KCvale Motorized Bicycle Vendor

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    BikeBerry 5G chain is garbage.

    [​IMG]
    The chains wear and there is no way to adjust them.
     
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  17. Tom from Rubicon

    Tom from Rubicon Active Member

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    You didn't mention your latest, greatest NuVinci builds KC, and it is a valid option. Not cheap. but well engineered.
     
  18. Tom from Rubicon

    Tom from Rubicon Active Member

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    You are right KC. But an internal idle tensioner could be integrated. Myself, I am going Grubee.
    It is the old KISS
     
  19. CrazyDan

    CrazyDan Well-Known Member

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    Only one that might be better than the grubee would be the e-z-matic, but then I'm not sure if it's worth buying 2 grubees, keeping one as backup. I docked over 12k miles on a used 4g-1c, now I've gotten around 5k on the 1b I bought, but still using the 1c big pulley and freewheeling 12 tooth output sprocket.
     
  20. Tom from Rubicon

    Tom from Rubicon Active Member

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