IMG 20151208 095716637.jpg
Project data
Authors Joshua M. Pearce
Handy Chandra
Status Designed
Prototyped
Completed 2015
Made? Yes
Replicated? No
Cost USD $ 6
Instance of Bicycle part
Export to Open Know How Manifest
Page data
Type Device, Project
Keywords 3D printing, bicycle, bike handlebar, butterfly handlebar, osat 3D-printable designs, Plastic
SDGs Sustainable Development Goals SDG09 Industry innovation and infrastructure
Published by Handy Chandra
Kathy Nativi
Fionaconnor
Published 2015
License CC BY-SA 3.0
Affiliations MTU
Michigan_Tech's_Open_Sustainability_Technology_Lab
MY4777
Language English (en)
Page views 128


This is a butterfly bicycle handlebars designed to fit 25.4 mm clamp. I designed this to fulfill the request for 3-D printable bicycle handlebars Requests for 3-D printable open source appropriate technology. This will contribute towards the goal of making 3-D printed bicycle.

I used press-fit designs from [1]. Basically a circle for outer mating part and 8-sided polygon for the inner mating part. When pressed together, the pointy part of 8-sided polygon will be squished to fit into the outer mating parts.

Bill of Materials[edit | edit source]

300 grams of PLA for $6.

The 3D Model can be found here libre3d.com

Tools needed[edit | edit source]

MOST Delta RepRap or similar RepRap 3-D printer

Technical Specifications and Assembly Instructions[edit | edit source]

Print all the A, B, and C part with the flat side on the bottom. After that, just push the part together. You might have to push a little harder to make them fit. The goal is to make them impossible to pull apart after you put them together.

Cost savings[edit | edit source]

70 % savings over commercial $20 butterfly handlebars

References[edit | edit source]

  1. https://www.appropedia.org/Requests_for_3-D_printable_open_source_appropriate_technology
  2. http://makezine.com/2015/07/22/tips-3d-printing-press-fit-parts/
  3. http://www.bicycle-touring-guide.com/bicycle-handlebars/