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BBSHD - Motobecane Night Train Bullet

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    BBSHD - Motobecane Night Train Bullet

    Motobecane Night Train Bullet - BBSHD

    This bike has the same frame as the Motobecane Sturgis Bullet; thus reference the post by JPLabs for his build details that I followed.


    Donor Bike:
    Frame 17.5" Medium w/11 speed rear cassette ( I added the Thudbuster LT seat post)

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    Build purchases

    120 mm BBSHD kit
    Luna Mighty-Mini 30t chain ring
    Display - DPC-14
    Mid Drive Gear Sensor for derailers
    Programming Cable
    Universal Thumb Throttle
    Luna wrench for drive installation
    52v Panasonic 13.5ah GA Shark Pack
    Luna 52v advanced 300w charger

    Universal Hall Sensor Brake Switch 8fun Bafang BBSHD (for rear brake)
    Race Face Cinch BSA BB Cup Tool
    Origin8 2.5mm outboard BB spacer for SHI/GXP (Bag of 10) Note: Luna sends a spacer kit, but there is not enough spacers for this build)
    Jagwire Alloy Stick-On Guides C-Clips (for rerouting rear shift cable)


    Build Summary:
    The bottom bracket removal process was smooth with no difficulties encountered.

    Motor spacing
    Used one 2.5 mm spacer on the chain side to get the motor as close to the chain stay without touching.

    I needed to trim front derailer mount bosses, 8 mm from the forward and 1 mm off of the rear boss.

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    Non-chain side I used seven 2.5 mm spacers. I used two washers on the motor mount bracket (about 2.5 mm)

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    Rear Cassette Alignment:

    With the 30t Mighty Mini chain ring (since I will be mostly using the bike for single track) I wanted the gearing the 30t sprocket provides)


    When aligned with the front chain ring aligned with 8th gear in the rear.

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    When in 1st gear, there is a substantial angle. ​​​​I have about 150 miles on the bike mostly on single track and have not had any problems. I am figuring over time I will be changing out chains and sprocket more often, but I feel it is worth it to have the 11 speeds.


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    Rear cassette shifter cable run and Gear Sensor:

    The original bike routes the rear cassette shifter cable through the frame and below the bottom bracket. Due to the way the motor mounts and the placement of the Gear Sensor I decided to reroute the cable via the top tube and then along the seat stay.

    I mounted the Gear Sensor just below the rear of the top tube.


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    Speed Sensor

    I used cable ties to mount the speed sensor, had to mount it in a way to avoid wide tire. No additional spacing was required.

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    eBrake Switch

    The installation of the eBrake switch was the most challenging and I am not completely happy with the results. Installed on the top side of the handle for the rear brake only, using a cable tie for the sensor and tape to hold the magnet in place. Did not want to use glue for mounting, will continue to seek a better mount.

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    Finished bike:

    I have about 150 miles, mostly single track using PAS. It has been an adventure dialing in PAS settings for my mountain biking style.

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    #2
    Nice build thread, I have added your bike to the list of compatible bikes. Thanks for posting

    Comment


      #3
      That's a great looking build! Nice routing improvement, too. Sweet bike.
      Fabrication is fun! Build something today. Show someone. Let them help. Inspire and share. Spread the desire.

      Comment

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