BOTEN - The Scrapper

Discussion in 'BUILD OFF 10 BIKES' started by SkyknightJohn, Jul 1, 2015.

  1. SkyknightJohn

    SkyknightJohn

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    Inspired to create a profile after long lurking... I'm throwing my hat late into this build off, with barely a month to go! I've recently finished my second -from scratch build- (both documented at endless-sphere, since I made them electric. However, this seems more the right forum, since it needs to be a good bike before it can be a good e-bike!) Each of the first two took about a year to complete. My goal in entering BOTEN is to motivate myself to pick up the pace a bit.

    Since I'm on a moratorium from buying new raw materials, I looked around my shop and put some stuff together: the crankset, a rigid, disc fork & quill stem and some disc rear dropouts from Nova round out the bike specific parts. Well, the wheels too. The frame will come from assorted steel SCRAP, or maybe 'leftovers' is a better word: 3/4" round 4130, 3/4" square mild, 1/2" round mild, and some 1/2"x 1" rectangle.

    Still working some of the details, but the photos should show you my thought process so far. Wheelbase is 48". Head Tube angle is 30*. Aiming for an effective seat tube of 20".
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  2. kingfish254

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

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    Welcome aboard.
    Your "thought process" looks pretty cool to me so far.
     
  3. Kev Higgins

    Kev Higgins

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    Could you share a link to the ES build you did? I may do another e build for next year. Here's my E-BTR

    [​IMG]
     
    Chad T and SkyknightJohn like this.
  4. The Renaissance Man

    The Renaissance Man __CERTIFIED DIVER__ (Open Water & Open Dumpster) Pro Member

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    Nice start. :cool2: Good luck!
     
  5. Falstaff

    Falstaff

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    Welcome in, looks like a good start to me.
     
  6. SkyknightJohn

    SkyknightJohn

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  7. LukeTheJoker

    LukeTheJoker Moderator

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    Welcome to the build-off!

    Luke.
     
  8. SkyknightJohn

    SkyknightJohn

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    Day 2; July 2;
    Small progress is still progress. Cut the headtube today. Mitered the Top tube as well, but no pic.
    [​IMG]
     
    Last edited: Jul 3, 2015
  9. SkyknightJohn

    SkyknightJohn

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    Day 3; July 3;
    Not specifically bike parts, nor is it scrap, but I needed to do it if I'm going to keep at this madness... An alignment jig! The design was inspired by what I saw OCD used in the "Simply Red" build: http://www.ratrodbikes.com/forum/index.php?threads/simply-red.82308/ I don't know if that is the first example of this method, but it is the first I've seen, and I've searched many home frame jigs. Very economical. $63, including bolts, at the big box hardware store where you can save big money. I'm not planning on having as much frame drop below the axle line as some do, so the axle mounting is only 6" tall. I can always add more later for different designs. [​IMG]
     
  10. OCD

    OCD

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    Looking good John:
    That's the beauty of forums, there's so much info and inspiration to be gained from the work of others'. I've seen some amazing jigs on this and other sites (Matt on ES especially) with cool aluminum extrusions and lathe turned head tube cones, etc. But on a real world budget you can't beat a $63 one. If the wheels, head tube and bottom bracket are properly aligned, you're bound to build a ride with predictable handling. Looking forward to seeing more progress. :thumbsup:
     
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  11. LukeTheJoker

    LukeTheJoker Moderator

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    Keep that progress coming!

    Luke.
     
  12. Funkme

    Funkme

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    Looks good so far,like the shape of the frame idea.
     
  13. SkyknightJohn

    SkyknightJohn

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    Day 5; July 5;
    Independence day saw not a Scrap of bike building. ;)
    Thanks for the continued words of encouragement!
    Today, another small thing accomplished: the rear axle alignment bit of the jig. I'm always reminded of how any job: painting, welding, whatever, is all about preparation. This small thing took a silly-long amount of time, but I know if not done right, the whole enterprise is at risk. (these are not the chain stays I will use, just some handy guides.)
    [​IMG]
     
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  14. LukeTheJoker

    LukeTheJoker Moderator

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  15. SkyknightJohn

    SkyknightJohn

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    Just the way heard it in my head! :happy:

    However, here are the ones I will be using:
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  16. LukeTheJoker

    LukeTheJoker Moderator

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    Looking good!

    Luke.
     
  17. SkyknightJohn

    SkyknightJohn

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    Progress! Starting to look like something! :cool2:
    [​IMG]
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  18. LukeTheJoker

    LukeTheJoker Moderator

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    :thumbsup:

    Luke.
     
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  19. DeuceWheeler

    DeuceWheeler

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    Nice! Looks like you are integrating a rack similar to a columbia firebolt? The frame design looks awesome btw
     
  20. kingfish254

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

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    Nice progress! Love the twin downtubes!
     
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