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Momentum Rocker 1 Titanium BBSHD Build

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    Momentum Rocker 1 Titanium BBSHD Build

    Click image for larger version

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ID:	31866 Hi All,

    Just completed my Build on a Regular Frame Momentum (Made by Giant) Rocker Titanium (Australian Model).

    Cost of Build in AUD

    Bike Frame - (From 2 Monkeys in Sydney) - $900
    Bafang BBSHD KIT - (Luna Mate) - $1779.10 including shipping
    52v Shark 17.5amp upgrade - (Luna Mate) -$180
    Gearsensor - (Luna Mate) -$67.00
    Lunawrench (Luna Mate) -$29.00
    Charger upgrade - (Luna Mate) -$30.00
    Hydraulic Brake sensors (Luna Mate) -$30 (not used)
    Luna Eclipse Chainring including spacer (Luna cycle USA) $111 USD
    Bike Stand - Local bike shop -$35.00
    Front brake upgrade - Chain Reaction Cycles - $80.00
    Miscellaneous bits and bolts - $15.00


    Over the next day or so I will post photos of the Build and problems I encountered along the way.

    This bike is a beast and is a real head turner on the streets !!
    Out and about
    Last edited by Boulders; 04-02-2017, 06:09 AM.

    #2
    THE BUILD

    There were no problems in removing the Bottom Bracket as it was a new bike fresh out of the box.

    Bottom Bracket size on this bike is 120mm. (Very tempted to try putting a cyclone XL on there !!)

    First problem that i entailed was the bottom bracket had only been machined about an inch on either side where the thread was tapped and it was much narrower through the centre.

    Trying to fit the motor was impossible. I have read of people using a dremel and that it can take some time to get it to fit.

    Rodney from Luna Mate suggested that I use a holesaw as some of his other customers have done. Went through the toolbox and found a 33mm sitting there.

    I just sprayed it with some WD chain lube I had as lubricant and drilled it out from both sides. Took a couple attempts to get it right and then wiggled the drive in for a nice snug fit.





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    Those alumunium shavings were left courtesy of the factory after removing BB.

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    33mm holesaw for ALuminium and Wood - Perfect size for boring the centre.

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    Bracket After Drilled out and obviously before i cleaned up all the shavings. Surprisingly the thread is still good if I was to ever remove the motor.

    Comment


      #3
      Motor and brackets all fitted perfectly.

      I had no interference from the Chain stays and did not even have to use the Luna Eclipse Spacer which i had ordered just in case i may have had an issue with the Eclipse's Massive offset.

      The chain-ring lined up perfect with 4th gear for a nice straight line.


      The Luna Eclipse delivered with fittings and spacer

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      Here a coupe photos of the motor fitted and Chain installed. It is like they built this frame with the BBSHD and Eclipse in mind.

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      Plenty of clearance from Chain stay

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      Perfect alignment with 4th Gear. No jumping or crunching.

      Comment


        #4
        Next thing was to fit up the Shark Battery Pack.The existing Water bottle holes were way too low so I fitted a couple Rivnuts. Didn't have the tool to rivet them in so improvised with a bolt, a star washer (very important as it grips the rivnut to stop it spinning), an oversized nut and and a couple nuts.

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        Use a ring spanner to hold the bottom nut. Star washer is in between rivnut and bottom nut. Then use a socket to tighten the bolt head which will pull the rivnut up and allow it squash on to frame.

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        Also used one of the existing rivnuts to put a third bolt through aluminium plate for extra security.

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        Comment


          #5
          Next thing I installed was the Gear Sensor. Had to put it as close as possible to the motor as the lead off the motor and the sensor are not really long. I have been told you can buy extension cables but it worked just fine for me.

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          After i installed the display, throttle and control buttons.

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          I then tidied up and cable tied all the wiring, fitted the speed sensor, cut the excess power cable and soldered it in within the cradle for a neater fit. Eliminated the need to bunch up cables and try and hide it somewhere.

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          Comment


            #6
            Overall, it was pretty straightforward and the only hurdle was the boring out of the bottom bracket.

            I will add more info over the next few days.

            If there is anything I may have missed or you have any questions on the build feel free to fire away.

            Thanks

            Theo

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