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  1. #1
    mtbr member
    Join Date
    Oct 2015

    Geometry/bike drawing app

    Before I bought a new bike, I was comparing geometry of my choices just by looking at the numbers. But I wanted to also see how the bike look, so I wrote a super basic app to draw a bike using geometry data.

    This is the info the app needs:
    • name of the bike
    • wheel diameter
    • head angle
    • seat angle
    • reach
    • stack
    • wheelbase
    • chainstay length
    • seat tube length
    • bb drop
    • fork offset

    Other four optional parameters are:
    • offset_seat
    • offset_head_top
    • offset_head_down
    • debug

    If anyone is interested I can provide more info about this parameters, or anything else.
    The app generates images for each bike from the provided file or a single image with all bikes on top of each other.

    Here is a demo:

    You can download it from here:

    The archive includes the app, an example file, and the python source code.

    Geometry/bike drawing app-e7vm88z.jpg

  2. #2
    mtbr member
    Reputation: Gasp4Air's Avatar
    Join Date
    Jun 2009
    Cool tool
    Use it, use it, use it while you still have it.

  3. #3
    mtbr member
    Join Date
    Mar 2018
    This is pretty cool. My 11 year old son is really into drawing frames (gets out his protractor, compass, etc..), so he'll probably dig this.

  4. #4
    mtbr member
    Reputation: mack_turtle's Avatar
    Join Date
    Jan 2009
    Does this app include unicorn geometry?

  5. #5
    Self Appointed Judge&Jury
    Reputation: DIRTJUNKIE's Avatar
    Join Date
    Oct 2000
    Quote Originally Posted by mack_turtle View Post
    Does this app include unicorn geometry?
    How many replies did the unicorn thread get before it was sent into space? Any good replies?
    Quote Originally Posted by mileslong View Post
    I passionately remove rocks and corners and other stuff I find too hard to ride.

  6. #6
    mtbr member
    Join Date
    Oct 2015
    Thanks guys
    Not sure about the unicorn geo though.

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