Non-drive side crank

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Non-drive side crank
Non-Drive Side Crank.JPG
Description The project is a part of the 3D printable bike goal, offered by Dr. John Gershenson.
Keywords 3D printing, bicycle, bike crank, tool
Uses transportation, development
Authors zhine kang
Status prototype
Made? Yes
Replicated? Was this project made independently by someone other than the authors and without their guidance? Yes
Countries of design United States
Materials Plastic
Estimated cost USD $ 2.00
Sustainable Development Goals SDG09 Industry innovation and infrastructure
Documentation data
Language English
Manifest data
Language English
Updated 2020-06-04
Author Kathy Nativi
Author affiliation Appropedia
Author email info@appropedia.org

Non-Drive Side Crank[edit | edit source]

Project developed by Zhinek (talk) 07:19, 04 December 2014 (PST)


Abstract[edit | edit source]

  1. The project is a part of the bike, offered by Dr. John Gershenson.
  2. It is designed based on a real drive-side model since I only find drive-side model from the lab.
  3. I choose to design the non-drive side part since the strength of the gear can not be reached by using plastic material to print.
  4. All size are matched with the original one.

Bill of Materials[edit | edit source]

  1. 3D Printer
  2. Drive Side Crank Model
  3. Plastic filament

link to all source files[edit | edit source]

  1. File:Non-Drive Side Crank.scad
  2. File:Non-Drive Side Crank.stl

Tools needed for fabrication of the OSAT[edit | edit source]

Skills and Knowledge Necessary to Make the OSAT[edit | edit source]

  • Basic knowledge for 3D printing

Technical Specifications and Assembly Instructions[edit | edit source]

  1. Print from the base
  2. There is a curve that printed in the air, it's the most difficult part
  3. It can be printed but with low quality, needs to be corrected and polished
  4. Estimated printing time: 37min
  5. Estimated processing time: 15 min

Common Problems and Solutions[edit | edit source]

  1. It is made of plastic so it may not be as strong as metal.
  2. The edge of the crank is not perfectly smooth

Cost savings[edit | edit source]

  1. Estimated costs: less than $2 per crank (including the cost of the filament and electricity)
  2. Commercial equivalent: more than $10
  3. Save at least $8/80% of the cost

References[edit | edit source]

  1. Google picture for bike parts.
  2. Ebay website for pricing