My Mo-Bike is finally done!

Discussion in 'Motorized Bicycle General Discussion' started by Outrunner, May 25, 2009.

  1. Outrunner

    Outrunner New Member

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    I've finally completed my bike so that I feel like it is ready to ride. It all
    started out last November with just the basic bike and motor kit. What
    I ended up with was this: Front and rear drum brakes laced with 12 gauge
    spokes and motorcycle wheel bearings, Mikuni 18mm carb, 1986 Harley
    Davidson Sportster2.2 gal. tank (E-Bay),12 volt 4.5 amp lead acid gel battery
    mounted in a aluminum box, 12 volt 40 watt lawn tractor head light with 12v
    LED tail light with brake light that works off of a 1972 Triumph/BSA front brake
    cable with micro switch,Boost bottle, speedometer/odometer, tachometer with
    time log. custom expansion chamber and custom chain tensioner wheel with 2
    ball bearings. Top speed 41 mph (screaming at 7200 rpm) with a 41 tooth
    sprocket. It will cruise comfortably around 35mph , which is fine with me.
    I plan on installing a slant head on it next, to see how much if any improvement
    shows. It's been more time consuming and more difficult than I thought it would
    be. In fact I'd be a little embarrassed to admit how many days and hours I've
    put into it. But, most of it has been fun though.
     

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  2. Dan

    Dan Staff
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    Man OR!! How ever long it took, well worth it! Really beautiful work.
     
  3. Creative Engineering

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    REALLY REALLY NICE Outrunner!!!

    I wouldn't be the least bit embarrassed about the time! Quality builds take time!

    I see a familiar machined part on that bike...I'm proud to be part of it!

    Jim
     
  4. skjjoe

    skjjoe Member

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    Wow really nice build there.That is a classic
     
  5. Outrunner

    Outrunner New Member

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    Jim, Yes, you are right. I forgot to add that I also have Creative Engineering's
    clutch actuater kit. It's really the only RIGHT way to set up your clutch so that
    it works smooth and easy, I love it! Thanks for the compliment too.
    Fred
     
  6. Retmachinist

    Retmachinist New Member

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    Outrunner, that is a beautiful build, and I know what you mean about time spent. I don't tell people how many hours I have in mine but like Jim says a real quality build takes time.
    That sounds and looks like a really safe bike to ride. That is also one of my main concerns. At my age I wouldn't take a crash very well. Great Job!

    John
     
  7. old motorbike

    old motorbike New Member

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    Very great build. outstanding classic look.
     
  8. 2door

    2door Moderator
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    Beautiful, simply beautiful. That's a piece of work...and I mean that in the best way. Congratulations on a quality first build.
    Tom
     
  9. GeneFiorot

    GeneFiorot New Member

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    It is inspiring to see a really wonderful bike. Your attention to details are obvious. Best of Luck with it. Can you please share your set up and jetting of the Mikuni carb
    Gene
     
  10. Outrunner

    Outrunner New Member

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    First thanks guys for the compliments I really appreciate them!
    The 18mm Mikuni carb #VM18-144 comes with an 80 main jet, which is a little
    on the rich side at top end, so I've got some various jet sizes above and below
    the stock ones on order. I plan on using a 70 or 75 main jet. Currently I've located the 5 notch needle clip to the top, making it as lean as it can. It accelerates very
    well and has rapid throttle response also. In order to mount the Mikuni, I had to
    use a short piece of PVC tubing in order to reduce the spigot mounting inside
    diameter, so that it would fit the intake manifold.That worked real well.I've been
    trying to mount a UNI Filter to it, but so far I haven't gotten a good fit, so I'll
    have to do some more mods to the filter and mount.
     

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  11. azbill

    azbill Active Member

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    very nice bike !!!
    the art is in the details :)
     
  12. joe-craft

    joe-craft New Member

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    hi, i love your bike. it is AWSOME, but i see one little flaw. the exhuast pipe to the expansion chamber. i see a crumpled spot in it. i think it would decrease performance alittle and the long pipe that you have, might not have the desired effect that you might be looking for with the expansion chamber, but other then that it is still WICKED AWSOME!
     
  13. Dan

    Dan Staff
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    That is a great thought Bill.
     
  14. Echotraveler

    Echotraveler New Member

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    thats a head turner for sure!

    stunning bicycle.
     
  15. Outrunner

    Outrunner New Member

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    Joe, I actually tried to mount the expansion chamber real closeto the engine, but the only route that might have worked was under the engine, and my center stand was in the way. I realize I could have used a side stand, but I chose not to do that. I was very curious how it would perform with the long pipe and the ex-chamber at the end, but it accelerates great and will hit 7200 rpm on my
    digital tachometer. Keep in mind I opened and matched the ports and I can fine
    tune the Mikuni carb til' the cows come home. The exhaust pipe does have a slight kink, but it's very slight. I had to heat the pipe cherry red to make it bend
    and fit without binding. Yeah, I wish I could get that little kink out, but it would
    be almost impossible to do without creating more problems. I certainly appreciate your observation and your compliments. It's definitely less than
    perfect, but I can deal with it I guess.
     
  16. ZnsaneRyder

    ZnsaneRyder New Member

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    A true work of art!

    Nice bike!
     
  17. OzzyU812

    OzzyU812 New Member

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    Very nice!
    That's where an expansion chamber should be placed!
     
  18. robin

    robin Member

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    Wowzer--utterly fantastic---i would not have the patience i prefer to get it together asap but good and safe and ride constantly---we have almost perfect temperature and lack of rains in the summer---if you get sick of it i will buy it lol
     

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