Bike Chain Guard
About this device
| Keywords | 3D printing, bicycle, bike chain guard |
|---|---|
| Uses | transportation, hobbyism |
| Authors | Alyssa Knoester |
| Status | prototype |
| Made? | Yes |
| Replicated? | No |
| Designed in | United States |
| Affiliations |
MTU MOST |
| Materials | Plastic |
| Cost | USD $ 0.42 |
| SDGs | SDG09 Industry innovation and infrastructure |
| Instructions data | |
| Manufacturing files | https://www.youmagine.com/designs/osat-bike-chain-guard |
| Manifest data | |
| Language | English |
| Updated | 2020-06-04 |
| Author | Kathy Nativi |
| Author affiliation | Appropedia |
| Author email | info@appropedia.org |
Bike Chain Guard
Project developed by User:Alyssa Knoester
 |
This Open Source Appropriate Technology has been designed but not yet tested — use at your own risk. |
|
This Open Source Appropriate Technology has been prototyped. |
Abstract
- The OSAT piece is a universal chain guard for a bicycle.
- It improves the safety of a bike for people who may not have access to a new bike or chain guard and is attached simply by string or a zip tie.
- There hasn't been case studies regarding chain guards however there have been stories and research into the significance of bikes in developing countries. Bikes help alleviate poverty in developing countries.
Bill of Materials
1. PLA Filament
*OpenSCAD and STL Files can be found here *
2. 2 Liter Bottle (free from recycling)
- Attachment Method:
1.String 2.Zip Tie
- Adhesive:
1.Super Glue 2.Hot Glue
Tools needed for fabrication of the OSAT
- MOST Delta RepRap or similar RepRap 3-D printer
- Potentially a Hot Glue Gun
Skills and Knowledge Necessary to Make the OSAT
- None
Print Instructions
For all printed components
Material: PLA
Layer Height: 0.2mm
Shell Thickness: 0.8mm
Fill Density: 15%
Print Speed: 70 mm/s
Printing Temperature: 210 C
No supports necessary.
Total Printing Time: 1 hr 45 mins
Assembly time: >5 min
Assembly Instructions
- Cut a section of 6" by 2.5" from the 2 Liter bottle
- Glue the bottle in the seam of the 3d printed part see image below
- Use string or zip tie to attach to bike
Common Problems and Solutions
- There were no problems with building or printing, more testing would be necessary for improvements.
Cost savings
- PLA Material: $0.38
- Means of Attachment:
1. String: $0.003 (third of a cent for a 6 in piece) 2. Zip tie: $0.01
- Adhesive:
1. Hot glue: $0.005 (half a cent or less of glue) 2. Super glue: $0.03
Total: $0.39-$0.42
Commercial: $24.28 [24 in Guard]
Savings:
$23.86-$23.89 98%
This article is issued from Appropedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.