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Full Suspension trail 2008 Specialized Epic BBSHD Shark 52V small

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    Full Suspension trail 2008 Specialized Epic BBSHD Shark 52V small

    BBSHD drive unit fits great on this bike.






    Shark battery mount needed custom holes drilled in the lower aluminum housing.




    I drilled zip tie holes into the upper mount.
    I spread the rubber pads out as wide as possible.



    Battery slides in and out with a small amount of finagling.




    I'm using dual control shifters.
    The brake lever swings up and down to shift gears.
    Along with backward for the braking.





    The brake sensors fit awesome with custom drilled holes for the zip ties.




    Gearshift sensor is mounted on the rear chain stay.
    I totally reccomend having this, especially if you are going to have newbies ride the bike.
    Makes the system feel very well put together, and is safer for your gears/chain.




    I updated the programming on the pedal assist with the cable and downloadable software.
    Absolute must if you want the PAS to be usable with the 30 tooth ring.
    I can now pedal constantly at 18 mph and use about 300 watts PAS.
    Setting 2 is 20 mph and then after that your really pedaling too fast to keep up.

    One problem was the spacers for the drive unit.
    The outside diameter of these was too large and did not allow the bolt to fit through.
    I had to file down a portion of the od.




    Totally recommend getting the luna bottom bracket wrench. I ended up buying two different other wrenches and they still are not that good.


    Went tubeless because I kept getting flat tires.
    The BBSHD has too much power !!!



    Bafang BBSHD 1000W Mid Drive Kit
    (Bottom Bracket Size: 68-73mm (Standard)
    Luna Full Color Display $45.00
    Bafang BBSxx Universal Thumb Throttle,
    Mid Drive Gear Sensor for Derailers $45.00,
    Shark 52v Panasonic PF 11.5ah $435.95,
    52V Advanced 300W Luna Charger $79.95)
    Luna Mighty-Mini 30 tooth BBSHD Chain Ring$55.95 USD
    Bafang Hydraulic and Disc Brake Sensors E-Brake (Pair)$21.90 USD
    LUNA Wrench BBSHD and BBS02 Mid Drive Installation Tool
    Bafang BBS02 and BBSHD Programming Cable $19.95 USD



    Attached Files
    Last edited by shangismachine; 09-07-2016, 09:33 AM.

    #2
    Great build report, I have been looking at this bike frame for a little while to become my new ebike. My first donor bike was a hard tail that I fitted a Thudbuster to. I've never had a full suspension bike so I would be buying one used. I didn't see any comments about the added weight changing the suspension, does it sag much from the added weight? Do you notice it compress more when you get on it now that the electric motor hardware has been added? Also, when you hit the throttle is it fairly smooth delivery or can you feel the rear suspension reacting to the motor torque every time? This all depends on how you use it I guess, sounds like you use the PAS a lot, so do I but any feedback on how it works would be great.

    Comment


    • shangismachine
      shangismachine commented
      Editing a comment
      Sorry for the late Reply, was getting every single post from this forum and had to turn everything off.

      After going full suspension from a hard tail, I would never go back.
      Especially with electric, since pedal bob is no longer an issue going up hills.
      Throttle it out! or maybe pedal a little with the PAS

      There's a lot of weight added from the electric, the suspension is air sprung though, so you just pump up the front and rear shocks a little to compensate.
      Just like you would if a heavier rider was on the bike or after gaining a bunch of weight from the holidays.

      If this was steel spring sprung, you may have to change springs.
      The damping is adjustable too, certainly dialing in the suspension is needed.

      The BBSHD is very smooth, its a nice unit, its an industrial machine, not a jewel like, optimized Iphone.
      You can certainly make the suspension react with the throttle if you mash the throttle.

    #3
    Your post inspired me to built mine. Thanks

    Comment


      #4
      Originally posted by shangismachine View Post
      BBSHD drive unit fits great on this bike.

      [ATTACH=CONFIG]temp_3341_1473265714187_316[/ATTACH]

      [ATTACH=CONFIG]temp_3356_1473265619821_25[/ATTACH]


      Shark battery mount needed custom holes drilled in the lower aluminum housing.

      [ATTACH=CONFIG]temp_3361_1473265732401_592[/ATTACH]


      I drilled zip tie holes into the upper mount.
      I spread the rubber pads out as wide as possible.

      [ATTACH=CONFIG]temp_3362_1473265743877_832[/ATTACH]

      Battery slides in and out with a small amount of finagling.

      [ATTACH=CONFIG]temp_3363_1473265752596_229[/ATTACH]


      I'm using dual control shifters.
      The brake lever swings up and down to shift gears.
      Along with backward for the braking.

      [ATTACH=CONFIG]temp_3358_1473265760875_548[/ATTACH]



      The brake sensors fit awesome with custom drilled holes for the zip ties.

      [ATTACH=CONFIG]temp_3359_1473265767716_432[/ATTACH]


      Gearshift sensor is mounted on the rear chain stay.
      I totally reccomend having this, especially if you are going to have newbies ride the bike.
      Makes the system feel very well put together, and is safer for your gears/chain.

      [ATTACH=CONFIG]temp_3360_1473265775860_460[/ATTACH]


      I updated the programming on the pedal assist with the cable and downloadable software.
      Absolute must if you want the PAS to be usable with the 30 tooth ring.
      I can now pedal constantly at 18 mph and use about 300 watts PAS.
      Setting 2 is 20 mph and then after that your really pedaling too fast to keep up.

      One problem was the spacers for the drive unit.
      The outside diameter of these was too large and did not allow the bolt to fit through.
      I had to file down a portion of the od.

      [ATTACH=CONFIG]temp_3364_1473265792319_675[/ATTACH]


      Totally recommend getting the luna bottom bracket wrench. I ended up buying two different other wrenches and they still are not that good.


      Went tubeless because I kept getting flat tires.
      The BBSHD has too much power !!!



      Bafang BBSHD 1000W Mid Drive Kit
      (Bottom Bracket Size: 68-73mm (Standard)
      Luna Full Color Display $45.00
      Bafang BBSxx Universal Thumb Throttle,
      Mid Drive Gear Sensor for Derailers $45.00,
      Shark 52v Panasonic PF 11.5ah $435.95,
      52V Advanced 300W Luna Charger $79.95)
      Luna Mighty-Mini 30 tooth BBSHD Chain Ring$55.95 USD
      Bafang Hydraulic and Disc Brake Sensors E-Brake (Pair)$21.90 USD
      LUNA Wrench BBSHD and BBS02 Mid Drive Installation Tool
      Bafang BBS02 and BBSHD Programming Cable $19.95 USD

      [ATTACH=CONFIG]temp_3357_1473265809927_3[/ATTACH]

      [ATTACH=CONFIG]temp_3342_1473265820523_499[/ATTACH]
      If you had it to do over, do you think the 750 watt motor would be enough? 1000 seems like a lot...

      Comment

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