Nirve fifty five 'skulls' build

Discussion in 'Stretch Cruiser & Chopper Motorized Bicycles' started by jimthebarron, Nov 6, 2013.

  1. jimthebarron

    jimthebarron New Member

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    [​IMG]

    Picked this up last week after I had been on the look out for ages for a Nirve or Electra to motorize for my second build.

    First thing is to make some offset engine mounts to clear the 3" fat rear tyre, here is the rear, just need to find a piece of billet for the front.

    [​IMG]

    Going to do a disc brake conversion on the springer forks, in-frame gas tank, new paint and springer seat.

    Cheers Jim
     
  2. Scott.D.Lang

    Scott.D.Lang Member

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    love the bike and that mount looks sweet
     
  3. 2door

    2door Moderator
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    Jim,
    That is going to be a great bike. I didn't realize until now that the frame is identical to the Nirve Switchblade. I've built two of those and fabricated a welded front and rear engine mount. How much off-set did you build into your mount? I found that 9/16" was perfect for tire/chain clearance. I've used the rag joint and a sprocket adapter and both work out well on that frame and rear tire.
    If you have any questions feel free to PM me or I can link to those Switchblade builds for you. Good luck and keep us informed of your progress.

    Tom
     
  4. maniac57

    maniac57 Old, Fat, and still faster than you

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    Beautiful work!
     
  5. jimthebarron

    jimthebarron New Member

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    Hi Tom,

    My first build was a Switchblade also, although the top tube is the same design the rest of the frame is a little different, more stretched and the tube for the seat post is bent on the Switchblade. I used a 9/16 offset also, which worked well. I will give you a shout if I need any info.

    [​IMG]

    My first build:-
    [​IMG]

    Cheers
    Jim
     
    #5 jimthebarron, Nov 7, 2013
    Last edited: Nov 7, 2013
  6. buba

    buba Member

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    Hi Barron

    Wondering about the motorbicycling activity in England riders? numbers? general interest? etc...

    With the annual Pioneer Run you have a long history as well....

    I am sure you experience much the same weather as Belgium so ???

    interested to know
    best
     
    #6 buba, Nov 7, 2013
    Last edited: Nov 7, 2013
  7. 2door

    2door Moderator
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    Jim,
    I remember that lime green Switchblade build you did. I admired it very much and it was in fact the inspiration for my first one. If I recall you had it up for sale here.
    Please keep us up to date on this 'Skull' project. You do excellent work, sir.

    Tom
     
  8. jimthebarron

    jimthebarron New Member

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    Front mount nearly done:-

    [​IMG]
     
  9. paul

    paul Active Member

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    very nice motorized bicycle! you do good work
     
  10. jimthebarron

    jimthebarron New Member

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    Mounts tested, just have clearance issues with the exhaust pipe?

    [​IMG]
    [​IMG]
    [​IMG]
     
  11. jimthebarron

    jimthebarron New Member

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    Exhaust to cylinder head extension piece:-

    [​IMG]

    This should bring the pipe out enough to clear the front mount and crank, fingers crossed.
     
  12. sublunacy

    sublunacy New Member

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    i have handmade o-ringed exhaust extensions.
    watch the hand sanding without blocks your edges are rounding. you should try finishing w a stainless highspeed brush. the finish looks great and requires nothing to stay looking good.

    nice nirve there man/ way to go
     
  13. jimthebarron

    jimthebarron New Member

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    Had a break for a couple of months, so decided to make a start again now the sun is out.

    Front and rear top tube fuel tank blocked off, filler neck jb welded in. Just need to seal inside the frame with POR15 fuel tank sealer, then prep for paint.
    Front and rear fenders blasted and primed.
    Front wheel re-spoked to incorperate disc hub.


    [​IMG][/URL,]

    Cheers
    Jim
     
  14. Vanyax

    Vanyax New Member

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    Я на nerve pyro изменил ведущую звезду.
    Мне кажется двигатель смещать не очень красиво.
     

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  15. jimthebarron

    jimthebarron New Member

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  16. gokart25

    gokart25 Member

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    Nice tank!
     
  17. jimthebarron

    jimthebarron New Member

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    A bit more progress:-
    Rattle can metallic black paint, springer disc brake on, engine in ...

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
  18. runnermike

    runnermike New Member

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    Looking good....real good!!
     
  19. jimthebarron

    jimthebarron New Member

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  20. King85

    King85 New Member

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    Where could I buy those motor
     

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