Virtual buildoff

Discussion in 'BUILD CHALLENGES' started by GuitarlCarl, Aug 29, 2018.

  1. GuitarlCarl

    GuitarlCarl

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    The Challenge: create a bike design using...
    Cad, napkins, graph paper or crayons.
    Your noodled out designs with
    multiple posts for a progression of ideas.
    Anybody in?

    Carl.
    Sent from my moto g(6) play using temporal shifting...
     
    Last edited: Aug 30, 2018
  2. GuitarlCarl

    GuitarlCarl

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    Here's one I did tonight, in ink
    on a three inch scrap of paper
    8a5eacdaf5a4a362c52e48664e3f3bd1.jpg
    Carl.
     
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  3. GuitarlCarl

    GuitarlCarl

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    and my idea transferred into paint.net for some cleanup and refining. The fork is still a mystery...
    Muscle Spasm 2.jpg
    I'm still tweaking drawings for the Columbia tandem I have yet to cut, but since the 26 x 4 wheelset showed up, it looks like I'll be building a whole rear triangle and using a jackshaft...

    Carl
     
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  4. Glen

    Glen

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    I hope designs of bikes that are never going to be built are ok here. o_O

    Because as much as I'd love to build this one that I sketched several years ago (2012?), I don't have the ability to bend the metal to required 'loops'.

    LoopyLoo_01.jpg

    Glen.
     
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  5. Glen

    Glen

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    And here's a photoshop of it...

    LoopyLoo_02.jpg

    Glen.
     
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  6. metalchewy

    metalchewy

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    A first rendition, a little out of proportion...
    [​IMG]

    Full suspension electric swing bike.
     
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  7. metalchewy

    metalchewy

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    @Glen showed us retro direct last winter, I figured a two speed on this would work well.
     
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  8. metalchewy

    metalchewy

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    Wheel details
    [​IMG]
     
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  9. metalchewy

    metalchewy

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  10. GuitarlCarl

    GuitarlCarl

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    The fork is still up in the air.
    The final fitment will be after the rear is assembled.
    I think maybe I want a stock trail so that the rear steer will be smooth and easy, not a fight. A simple design.
    Muscle Spasm 3.jpg
    I also have an idea, much like Picasso's Bull
    with a set of bars up front.

    Carl.
     
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  11. tjwilson

    tjwilson Pro Member

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    Love the idea for the thread Carl. Great opportunity to see other's design and thought process. Here's an example of my typical approach.

    Things usually start with spending way too much time searching images online:
    inspiration.jpg

    Lots of thumbnail sketches:
    sketches.jpg

    A slightly tighter sketch to be used for a trace once I have something that I think looks promising:
    sketchSelected.jpg

    I place the sketch into Adobe Illustrator to trace. I have "master" dimensions for distances between seat-crank-handlebars, trail, and crank centerline to ground clearance that I'll check and make adjustments as required. These dimensions are from previous builds and bikes that I have that I find comfortable to ride:
    startTraceAI.jpg

    Finished trace in Illustrator:
    trace02AI.jpg

    In Illustrator I split the trace into individual pieces that will be extruded in SketchUp:
    traceSplit.jpg

    The file is then exported as a CAD .dwg file and imported into SketchUp. SketchUp allows the outlines to be selected, face surfaces created and extruded, curved surfaces created between outlines generated, etc. Here is the imported .dwg drawing after pulling, stretching and combining in SketchUp:
    sketchupProjection.jpg

    Then the fun of playing with colors, angles and perspective. I've always left the 3D models pretty rough. Theres a lot of fine tuning, correcting and detailing that could be done. The purpose for me is to try and get a sketch that I like, adjusted to realistic dimensions, and then get a general idea of what it might look like in 3D:
    decoVRdesign_09132018.jpg

    decoVRdesign02_09132018.jpg

    decoVRdesign_09122018_frnt3qtr.jpg

    decoVRdesign_09122018_side.jpg

    decoVRdesign_09122018_rear3qtr.jpg
     
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  12. The Renaissance Man

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

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    I sure hope that you build this! Very nice.
     
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  13. tjwilson

    tjwilson Pro Member

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    Thanks, maybe some day. Would be in over my head but a fun challenge.
     
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  14. GuitarlCarl

    GuitarlCarl

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    Thanks @tjwilson, I just thought a thread full of noodling would be a cool thing to share amongst ourselves. I have noodled a bit in Sketchup too. But what I really miss was the simplicity and the intuitiveness of Deluxe Paint on the Amiga platform. So for now paint.net is quick and easy, I can turn a photo into a line drawing pretty quickly. Plus I'm a hack anyway... your drawings are definitely pro.

    Carl.
     
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  15. Endlesschain

    Endlesschain

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    just finished my sketch and will post tonite
     
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  16. Endlesschain

    Endlesschain

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    will tidy it up and go over with ink for final rendering,Im not into computer cad or anything like that so pen and paper it will have to be
    [​IMG]
     
  17. LukeTheJoker

    LukeTheJoker Moderator

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    Wow! I would love to see that built!
     
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  18. Endlesschain

    Endlesschain

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    well I do have plans to build something similar but not so long in the back and maybe not so over engineered in the front,we will see,I will need to secure a cruiser frame first so may be a future build,Glen has been enlisted to help along the way if it takes off
     
  19. Wildcat

    Wildcat

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    I've never built a frame but have had an idea for years. Since I probably won't have the means or place to build something, I might as well try to draw it here. My plan was to start with a regular cantilever frame and lay out the tubes, tack weld them to the donor frame. Then cut away the pieces I didn't want and finish it up with good welds. I would probably use the BB, seat tube, and head tube from the original frame so the angles would be good for riding and be easy to line up the drive train, and then do the forks and handlebars. I'm a poor artist, so I'm taking my time drawing it up. I'll post it up soon.
     
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  20. The Renaissance Man

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

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    OK, I'll play.:)
    I usually do my concepts in CorelDraw. The drawings are to scale for accurate measurements and patterns when the real build starts.

    Here's one that I did about five years ago and never got around to building it.
    TRM Woody.jpg
     

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