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{{Infobox device | {{Infobox device | ||
|title=Bike Chain Tensioner | |title=Bike Chain Tensioner | ||
|image=ChainTensioner.jpg | |||
|description=This chain tensioner can be used to address issues with chain hopping, chain slap, and rattles. | |description=This chain tensioner can be used to address issues with chain hopping, chain slap, and rattles. | ||
|keywords=3D printing, bicycle, bike chain tensioner | |||
|intended-use=transportation, hobbyism | |intended-use=transportation, hobbyism | ||
| | |status=Prototype | ||
|made=Yes | |||
|replicated=No | |||
|countries-of-design=United States | |||
|affiliation=Category:MTU, Category:MOST | |||
|materials=Plastic | |||
|estimated-cost-amount=6.50 | |||
|estimated-cost-currency=USD | |||
|sdg=SDG08 Decent work and economic growth | |||
|contact-affiliation=MOST | |contact-affiliation=MOST | ||
| | |authors=User:Spoonless | ||
| | |documentation-language=English | ||
|manifest-language=English | |manifest-language=English | ||
| | |manifest-date-updated=2020-06-04 | ||
|manifest-author-name=Kathy Nativi | |||
|manifest-author-affiliation=Appropedia | |||
| | |||
| | |||
|manifest-author-email=info@appropedia.org | |manifest-author-email=info@appropedia.org | ||
}} | }} | ||
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==Bike Chain Tensioner== | ==Bike Chain Tensioner== | ||
Project developed by [[User:Spoonless]] | |||
{{Status|prototype}} | {{Status|prototype}} | ||
==Abstract== | ==Abstract== |
Revision as of 00:07, 23 October 2020
Bike Chain Tensioner
Project developed by User:Spoonless Template:Status
Abstract
This chain tensioner can be used to address issues with chain hopping, chain slap, and rattles. It can be printed and assembled for less than $6, and offers equivalent perfomance to comercial products sold for $30.
Bill of Materials
- Tensioner.scad
- (2) ZipTies
- (1) 8-32 Thread, 1-1/4" Length Machine Screw (eg. McMasterCarr:91792A201)
- (1) 8-32 Thread Locknut (eg. McMasterCarr:91831a009)
Tools needed for fabrication of the OSAT
- MOST Delta RepRap or similar RepRap 3-D printer
- Screwdriver
- Adjustable Wrench or Pliers
Skills and Knowledge Necessary to Make the OSAT
- Ability to use a 3d printer.
- Ability to use a wrench and screwdriver.
Technical Specifications and Assembly Instructions
All parts are symetric such that component orientation is not an issue.
Assembly:
- Ziptie the cage to the Bicycle frame just above chain.
- Hold the chain up so it is captured in the cage.
- Bolt the pully in place
- gently crank the pedals by hand and shift throug all gears to ensure nothing is binding
Common Problems and Solutions
- If the fit to they bicycle is loose or overly tight the OpenScad variable "pipeDia" can be set to match your bike frame's tubing diameter.
Cost savings
- Approximatly $23.50 (78.3%)
- 30g of PLA at approx. $30/kg = $0.90
- Machine Screw, Locknut, and bag of zip ties approx $5.60 at local hardware store
- Equivalent Chain Tesnsioner: Bionicon C.GUIDE approx. $30
- 30 - (5.60 + 0.90) = $23.50