Bicycle Brake Caliper: Difference between revisions

This page was part of an MTU course MSE4777 OA and MSE4777 OB/MSE5777/EE4777/EE5777: Open-source 3-D printingPlease leave comments using the talk page. The course runs in the Fall semester. It is not open edit.Read more...

Bicycle Brake Caliper

Project developed by Albert Cowsky

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Abstract

Brake Calipers are an important component required to build a bicycle. In order to build a cheaper, open source, bicycle, the calipers can be printed and fitted with brake pads. Open source bicycles could reduce the cost of transportation for people that cannot afford to buy a commercial bicycle. This project can be combined with others to make a largely cheaper and printable bicycle.

Bill of Materials

(Makes Two Calipers)

Files

• File:Caliper.scad
• File:Caliper.stl

Commercial Parts

• 2x Commercial Brake Pads Cost = $4.98
• 8x M6x1 Torx Bolts Cost = $0.63
• 8x M6 Nuts Cost = $0.04
• 8x M6 Washers Cost = $0.05
• 1x Brake Line Guide Cost = $1.59 (For two)

Tools needed for fabrication of the OSAT

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

Skills and Knowledge Necessary to Make the OSAT

N/A

Technical Specifications and Assembly Instructions

1. Provide directions for print/assembly - be detailed enough in your “how to” to ensure that someone could construct the device from your description. Consider the elegance of IKEA like instructions.
2. Print time = 3 hours per caliper. 6 hours total
3. Assembly time = approximately 15 minutes
4. Including drawings or pictures of the device at stage of assembly at minimum. (http://www.appropedia.org/Special:Upload)
5. Consider video if appropriate

Common Problems and Solutions

• Brake line comes loose
  • Ensure that the bolts are still properly tightened every few weeks

Cost savings

• Total Cost (two calipers) = $19.60
  • Commercial Component Cost = $17.31
  • Plastic Cost - 99.4g (49.7 each) at $23/kg = $2.29
• |Commercial Calipers
  • $16-$40 each
  • $32-$40 for two
• $12.4 - $20.4 savings for two calipers
• 38.75% - 51% savings

References

N/A