mNo edit summary |
Sophivorus (talk | contribs) m (Text replacement - "|countries-of-design=Category:" to "|countries-of-design=") |
||
Line 15: | Line 15: | ||
|manifest-language=eng | |manifest-language=eng | ||
|documentation-language=English | |documentation-language=English | ||
|countries-of-design= | |countries-of-design=United States | ||
|main-materials=Plastic | |main-materials=Plastic | ||
|estimated-cost-amount=23.50 | |estimated-cost-amount=23.50 |
Revision as of 18:33, 21 September 2020
Bike Chain Tensioner
Project developed by User:Spoonless
Template:Statusboxtop Template:Status-prototype You can help Appropedia by contributing to the next step in this OSAT's status. Template:Boxbottom
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