my first motor bike build

Discussion in 'Motorized Cruiser Bicycles' started by driftology, Jun 22, 2010.

  1. driftology

    driftology New Member

    Joined:
    Jun 22, 2010
    Messages:
    125
    Likes Received:
    0
    hello forum! i am new here and workin on my first motorbike project. this is what i have put together so far. i have a sun custom retro cruiser. i had 2 wheels built around a sturmey archer x-fd front drum brake and the matching sturmey 3speed drum for the rear. i am using a problemsolvers cable doubler to pull both brakes with a right hand lever. the next step is to find a nice 2 stroke and a shifter kit. im also thinking about going with board racer style bars and a monarch front. i am open to any wisdom or advice for this project. this is an awesome forum by the way!
     

    Attached Files:

  2. BADBOOH

    BADBOOH New Member

    Joined:
    Apr 3, 2010
    Messages:
    273
    Likes Received:
    0
    Glad to have you! The bike already has a classic look, will be a great looking MB, In my opinion, don't paint the motor black, the silver painted motor would look very cool on that classic looking bike, and set off the mechanical reality of the motor, just my opinion, but what ever you decide, its your girl, and I am sure she will come out looking great. Keep us posted on your progress.
     
  3. BarelyAWake

    BarelyAWake New Member

    Joined:
    Jul 21, 2009
    Messages:
    7,209
    Likes Received:
    4
    Lookin' good already no doubt (^)


    FYI - I'm runnin the same Sturmey Archer hubs and the three speed is holdin' up really well to the SBP Deluxe HD Shifter Kit II, although you may find the axle nuts difficult to tighten adequately w/o stripping them to prevent movement in the dropouts. The problem is the flats on the axle (to prevent rotation) effectively reduces the threaded area by about 1/2 & there's just not enough surface area to hold under hard acceleration. It's not a fatal problem, just annoying when ya drop a gear and punch it to pass some spandexer and promptly derail the chain as the rear sprocket is a lil crooked now :p

    While my bike came equipped with dropout tensioners, you may wish to consider something like this as a solution: Bikeman: MKS Track Dropout Tensioners, for 5mm Dropouts (but I dunno yer axle shaft & dropout sizes so better chk them bfore ordering).

    I'd also advise usin' a drop o'loctite on the Sturmey's cable tension adjusters - I spaced that and paid the price of five spokes ripped outa my front wheel o_O Fortunately I was puttin' along at about a walking speed at the time lol


    That's such a sweet lookin' ride already man - I can't wait to see where ya go from here :D


    Oh right - oddly, the Sturmey 3sp seems geared a lil tall with the shiftkit (the shiftkit gearing was with a 21sp bike in mind), I'm running the 10T (standard, comes w/kit) jackshaft to crank sprocket (lil one on right side) with the 48T chainring (kit comes w/the 44T): Chainring - Freewheel - 48 Tooth w/chain guard and that seems about perfect for my ride... which is a bit of a heavy bike *shrug*
     
    #3 BarelyAWake, Jun 23, 2010
    Last edited: Jun 23, 2010
  4. camlifter

    camlifter Active Member

    Joined:
    May 4, 2009
    Messages:
    1,034
    Likes Received:
    0
    to prevent axle slip in the drop out use a torque arm from an electric bike hub motor kit. you can get them from ampedbikes or just about any e-bike vendor, may even be able to adapt the brake arm from a coaster brake hub, this will stop the axle from trying to rotate or slip, internal geared hubs need the axle locked solid to the frame.
     
  5. BarelyAWake

    BarelyAWake New Member

    Joined:
    Jul 21, 2009
    Messages:
    7,209
    Likes Received:
    4
    Hmm... interesting solution cam, I hadn't thought of that. While I've got tensioning bolts on my dropouts, they don't prevent the non-drive side (left) from being forced back - just the drive side from being pulled forward...

    I'll hafta look into that :D
     
  6. camlifter

    camlifter Active Member

    Joined:
    May 4, 2009
    Messages:
    1,034
    Likes Received:
    0
    heres a pic of the ampedbikes arms, the star shaped center lets you clock them to fit any position. just measure the dia. and the flat size of your axle and call them up. the have arms to fit any size. could even put one on both sides.
    http://www.ampedbikes.com/images/torque.JPG
     
  7. BarelyAWake

    BarelyAWake New Member

    Joined:
    Jul 21, 2009
    Messages:
    7,209
    Likes Received:
    4
    Those are elegantly simple (^) Thanks man!
     
  8. driftology

    driftology New Member

    Joined:
    Jun 22, 2010
    Messages:
    125
    Likes Received:
    0
    here is a little update to the project. i have picked up that spb shift kit but still no motor.
    [​IMG]
     

    Attached Files:

    #8 driftology, Nov 1, 2010
    Last edited: Nov 2, 2010
  9. corgi1

    corgi1 New Member

    Joined:
    Aug 13, 2009
    Messages:
    2,282
    Likes Received:
    1
    That will be a great looking MB
     
  10. driftology

    driftology New Member

    Joined:
    Jun 22, 2010
    Messages:
    125
    Likes Received:
    0
    Thanks! I can't wait to get a motor on this thing.
     
  11. darkhawk22

    darkhawk22 New Member

    Joined:
    Aug 17, 2010
    Messages:
    733
    Likes Received:
    0
    Looking good! I went with the simple motor kit from zoombicycles.com it was $129 with free shipping and a T-shirt. So far i've got about 125 miles or so on it and no issues. You can pick up a laid back seatpost from sportscarpat, you'll see his posts on here. The front drum brake is going to really pay off. I'm looking into adding that as well.
     
  12. driftology

    driftology New Member

    Joined:
    Jun 22, 2010
    Messages:
    125
    Likes Received:
    0
    I am running drums up front and back. I need to find another way to link them to one brake lever. I am currently using a problemsolver cable doubler but I feel there may be too much cable drag with it. It could just be the cheap lever.
     
  13. corgi1

    corgi1 New Member

    Joined:
    Aug 13, 2009
    Messages:
    2,282
    Likes Received:
    1
    how would some of the linkage from one of the small 20 inch bikes that let the fork spin all the way around work?
     
  14. jong93

    jong93 New Member

    Joined:
    Apr 29, 2010
    Messages:
    3
    Likes Received:
    0
    s;ap a motor on and what not and your good
     
  15. driftology

    driftology New Member

    Joined:
    Jun 22, 2010
    Messages:
    125
    Likes Received:
    0
    here is an update to my build. just installed a starfire super rat and zoom shift kit. the zoom kit is not nearly as nice as the SBP kit. i think i will be switching over to theirs soon. now i just need a tank and i will be set.
     

    Attached Files:

  16. mykustomcruizer

    mykustomcruizer New Member

    Joined:
    May 16, 2010
    Messages:
    91
    Likes Received:
    0
    i would go on ebay theres a guy who sell repro whizzer tanks there very nice and alot bigger then the cheap little ones
    [​IMG]
     
  17. driftology

    driftology New Member

    Joined:
    Jun 22, 2010
    Messages:
    125
    Likes Received:
    0
    Your bike is sweet! I love the color. What throttle is that?
     
  18. mykustomcruizer

    mykustomcruizer New Member

    Joined:
    May 16, 2010
    Messages:
    91
    Likes Received:
    0
    came with the kit i bought from ebay i really do like them
     
  19. LS614

    LS614 New Member

    Joined:
    Dec 22, 2009
    Messages:
    1,230
    Likes Received:
    0
    Why do people have such terrible looking bikes on this forum? There's absolutely no taste or talent here :D P.S. It's Opposite Day today, so that was a compliment ;) I love the bike that you are doing driftology but I totally think you should get the sbp kit, I agree :) And mykustomcruizer, I LOVE that bike, I'm envious
     
  20. mykustomcruizer

    mykustomcruizer New Member

    Joined:
    May 16, 2010
    Messages:
    91
    Likes Received:
    0
    ls614 thanks for the compliments bro
     

Share This Page