How to measure chain slack???

Hello fellow riders/youtube people
Today referring to a comment from my video about drive maintenance, I will test which method is better, commonly known or maybe the one from the manual.
Hope you like this video
Enjoy and let me know what you think.
Ride safe.


Music;
1.Intro
Track: JPB - Get Over You (feat. Valentina Franco) [NCS Release] Music provided by NoCopyrightSounds. Watch:    • JPB - Get Over You (feat. Valentina F...   Free Download / Stream: http://ncs.io/GetOverYouYO



2. Are We Board? by Pyrosion   / pyrosion  
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
Free Download / Stream: https://bit.ly/-are-we-board
Music promoted by Audio Library    • Are We Board? – Pyrosion (No Copyrigh...