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Working Prototype. Photo by James Lua.
Photo by James Lua.
Photo by James Lua.
Breadboard prototype. Used existing bicycle components and machined a modifiable test fixture. Photo by James Lua.
CNC turned billet 6061 bar stock into the single-sided spindles that utilized existing, but also modified, Lefty Si hubs. Turned components were machined on a Haas TL-1.
MasterCAM toolpaths. Programmed for re-machining wheel hub to fit custom machined wheels. Modifications to off-the-shelf parts were machined on a 3-axis Haas TM2.
Wrapping an aluminum structure with 3D printed SLAs. 2 halves adhered to make up the handlebars.
Pre-paint.
Dry-fit. Test for function. Assembled before paint. Consisted of 3D printed objet parts, SLA's, machined aluminum and ABS plastic, and modified off-the-shelf drivetrain components.
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Concept Bike Prototype

Created a futuristic concept bike for a debut at EUROBIKE in 2012. Cannondale approached us to engineer and prototype their concept "CERV" vision. Features included front and rear single-sided swingarms, forkless steering, and shaft driven.

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Comments (10)
  • Awesome work man

    7 years ago

  • Very impressive fabrication. I love the functional model. Is the frame rigid? will you be integrating front brakes? I like the rim mounted disk brake, but the rear wheel is generally quite easy to lock up with basic caliper brakes. a 26" disk will just get you to that lock up point more quickly (and use a lot of pad doing it). Either way - this is an amazing concept bike. Congratulations.

    7 years ago

  • so dope

    7 years ago

  • So awesome, Todd!!

    7 years ago

  • Great work!!! What a process!!! congratulations!!

    7 years ago

  • great job man.............

    7 years ago

  • Unbelievable innovation here. Very well done.

    7 years ago

  • wav nice concept

    7 years ago

  • luv it!

    7 years ago

  • wow, insane....very impressive.

    7 years ago

Todd Mendoza
Senior Innovation Prototyper at REI Seattle, WA