Jukadi

Discussion in 'BUILD OFF 10 FINISHED BIKES' started by us56456712, Jul 10, 2015.

  1. us56456712

    us56456712

    Joined:
    Sep 17, 2013
    Messages:
    2,226
    Location:
    Lake Superior Shore, Upper Peninsula of Michigan
    I am building a shed at camp and got no more time to work on the Jukadi. I have been riding it hard and everything is cool except the front brake. I want to put a cam on it to see if I can get more travel on the cable, but that will be after the BOTEN. I would not recommend making a coaster into a front brake, regardless of what others say, it just doesn't work that well, so far and I don't think it will. Every time you mechanically double the cable pull distance you loose half the force and coasters need a lot of force as well as distance. It only helps slow you on a flat turn, does nothing on a hill. Here it is. Bendix mechanical 2 speed, gender bender, welded with car batteries, cross country race bike.

    [​IMG]
     
  2. LukeTheJoker

    LukeTheJoker Moderator

    Joined:
    Nov 17, 2012
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    21,309
    Location:
    Capital of the Outback, Australia
    Congrats on finishing!

    Luke.
     
  3. ChimeraCycle

    ChimeraCycle

    Joined:
    Oct 9, 2014
    Messages:
    487
    Location:
    Bangor, ME
    Loved watching this build! Learned lots about battery welding, and yoopers! Culture! Yay!

    Excellent finished bike! Looks like a hoot to ride. Glad to know youre out there giving it the business on the trails.
     
  4. kingfish254

    kingfish254 CHECK OUT MY SALE THREAD FOR COOL STUFF! Pro Member

    Joined:
    Aug 31, 2009
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    Location:
    Historic Savannah
    This was a fun one to watch. Love the back story too!
    BRAVO!
     
  5. Funkme

    Funkme

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    Jan 2, 2012
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    Location:
    Mykonos,GREECE
    Well done,bike looks cool.
     
  6. Falstaff

    Falstaff

    Joined:
    Apr 18, 2015
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    6,835
    Location:
    central ohio
    Good job.
    Battery welding to build a bicycle,who knew?
     
  7. scooter

    scooter

    Joined:
    Jun 9, 2008
    Messages:
    16
    :praise: great job!
     
  8. us56456712

    us56456712

    Joined:
    Sep 17, 2013
    Messages:
    2,226
    Location:
    Lake Superior Shore, Upper Peninsula of Michigan
    I don't feel this was a great job, after last evenings 10 mile single track beat/test. It was the most fun of any trail bike I had to ride. It shifts like a dream. I put on a Gigant front drum brake and 32 x 19 gearing. Everything was dialed in. I took it for an extremely rough fast trail ride and the frame broke. I am $200 away from saving up enough for a real welder. My plan as of today is to strip the parts off Jukadi and put them on a 1950s Columbia. When I get my welder I will re weld all the joints, but that won't be until this winter.
    New drum brake to replace the red band coaster setup:
    [​IMG]
    Frame weld failure. The seat post is tall and there is a lot of torque and flex on high banked corners. It finally broke on a rough section of slab scree and exposed bed rock stairs, but I had already gone through a lot of other sections like this before it finally broke:
    [​IMG]
    Bike I will use for a donor frame for the Jukadi parts. The Jukadi will be no more for now.
    [​IMG]
     
    Last edited: Jul 18, 2015
    roadwarrior likes this.
  9. jodphoto

    jodphoto

    Joined:
    Jul 16, 2013
    Messages:
    135
    Ballsy engineering, man. way to go.
     
  10. us56456712

    us56456712

    Joined:
    Sep 17, 2013
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    2,226
    Location:
    Lake Superior Shore, Upper Peninsula of Michigan
    A pro welder told me that I shouldn't have gone over the stick welds several times as this drives all the slag and impurities into the weld and makes it brittle. Instead of my intended strengthening of the welds, I just made them weaker. So much to learn.
     
    Kevin Kanouff and roadwarrior like this.
  11. Kevin Kanouff

    Kevin Kanouff

    Joined:
    Apr 15, 2015
    Messages:
    289
    Thanks for being honest with us on here! Always good to learn from mistakes. Still cool you welded it together yourself and it lasted a little while. Can't wait to see it after it is fixed.
     
  12. Jake Sensi

    Jake Sensi

    Joined:
    Jan 23, 2011
    Messages:
    3,086
    Location:
    Philly
    Way to go. You did a great job.

    Sent from my SAMSUNG-SM-N900A using Tapatalk
     
  13. billy bob customs

    billy bob customs

    Joined:
    Oct 21, 2013
    Messages:
    159
    My definition of Experience. .
    What you get when you didn't get what you wanted .
    I've gotten it plenty of times.
    Good job!
     
    fordsnake and us56456712 like this.
  14. fordsnake

    fordsnake

    Joined:
    Mar 19, 2011
    Messages:
    942
    So much to be learned from this build.
     

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