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Bike Chain

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MOST Delta filament as guide.JPG This page was part of an MTU course MSE4777 OA and MSE4777 OB/MSE5777/EE4777/EE5777: Open-source 3-D printing

Please leave comments using the discussion tab. The course runs in the Fall semester. It is not open edit.


Preliminary Student Design Warning
Note that this page is a preliminary student design and has not been vetted.
Care should be taken to read critically and weigh the evidence.
Remember non-tested and vetted designs should not be relied on, especially in matters of health and safety. Recommendations to improve this project follow:


  • a solid design but has not been tested on full scale on bicycle
  • needs longevity testing - probably best in high performance plastic - e.g. nylon

Bike Chain[edit]

Project developed by Monica Fraser
Status
This OSAT has been designed but not yet tested - use at own risk.

You can help Appropedia by contributing to the next step in this OSAT's status.

Abstract[edit]

  1. This design can be printed to produce a bicycle chain to be used with a bike. This design can fit under multiple OSAT goals that involve cheaper transportation for creating a mostly 3D printed bicycle. There is one other design for a 3D printed chain, however the design is not listed for actual use due to its lack of strength. This design has more strength to it, without taking away the ease of assembly that the other option has.
IMG 20161203 012251133.jpg

Bill of Materials[edit]

Tools needed for fabrication of the OSAT[edit]

  1. MOST Delta RepRap or similar RepRap 3-D printer


Skills and Knowledge Necessary to Make the OSAT[edit]

  • N/A

Technical Specifications and Assembly Instructions[edit]

  1. Print settings for bike chain used (feel free to experiment with other options):
  • Layer Height: 0.1 mm
  • Shell Thickness: 1mm
  • Bottom-Top thickness: 0.5mm
  • Fill Desnity 30%
  • Print Speed: 30mm/s
  • Print Temperature (PLA): 190 C
  • Flow: 100%
  1. Print time estimate: 26 minutes for one link
  2. Assembly Time for entire chain: 10-20 minutes
  3. IMG 20161203 012434675.jpg
    IMG 20161203 012607921.jpg
    Take two main brackets, and place a connector bracket, spacer ring, and another connector bracket on the cylinders of each main bracket
  4. IMG 20161203 012659327.jpg
    With the assembly just made, place the cylinder of each of the main brackets inside the larger hole of the other main bracket.
  5. IMG 20161203 012719337.jpg
    Pull on both brackets to snap them into place of the smaller hole.
  6. IMG 20161203 012854113.jpg
    Take 2 more main brackets, 2 more spacer rings, and 2 more connector brackets. Place a spacer ring between two of the connector brackets on the part assembled in the previous step. Place a main bracket's cylinder through the three parts.
  7. IMG 20161203 012921187.jpg
    Assemble the other main bracket with a connector bracket, a spacer, and another connector bracket.
  8. IMG 20161203 012946282.jpg
    snap the assembled main brackets together as before.
  1. IMG 20161203 013039950.jpg
    IMG 20161203 013123961.jpg
    Continue this process until just two main brackets are left. Place a spacer between the connector brackets at each end. Place a main bracket at each end, and connect the ends together.

Headline text[edit]

Common Problems and Solutions[edit]

  • Not being able to snap a link into place onto the existing chain: Place the link that is being added in parallel to the existing link. This prevents the existing parts from getting in the way of adding new links on.
    IMG 20161203 012946282.jpg

Cost savings[edit]

  • If your solution is not a low cost one then it is not really appropriate.
  • One link = Two main brackets, two connector brackets, two spacer rings
  • Approximate cost for one bike chain link: $0.05
  • Approximate cost for a 50 link chain: $2.52
  • Cost of a [commercial bike chain] $8.95
  • Savings: $6.43 71.8% savings

References[edit]

  1. http://kcsbikes.com/topic.asp?TOPIC_ID=432