Threadlockers (Loctite etc.) explained

What are threadlockers? What kinds exist? How are they used? Do you need it for your bicycle? CONTENTS: 00:00 Introduction 01:20 What is a threadlocker? 02:04 How do they work? 03:42 What kinds exist? 07:54 Must you use it? 09:15 Alternatives 11:35 How is it applied? 15:24 My experiment 22:02 Conclusion Useful LINKS: This educational video nicely explains why I was wrong and why split-washers are not effective in locking the nuts (the split washer is discussed from 39:00 for about a minute - the link should open at that time in the video): https://youtu.be/vkbBpAOM4kM?t=2336 This is my video explaining the mechanics of bolted connections in general: https://www.youtube.com/watch?v=xcUTFcjuzOk Recommended bicycle parts tightening torques: https://bike.bikegremlin.com/14694/bicycle-tightening-torques/ Mounting and anti-seize pastes explained: https://bike.bikegremlin.com/7172/anti-seize/ Bolted connections and tightening torque basics explained: https://www.youtube.com/watch?v=xcUTFcjuzOk How to use threadlocker with blind holes (short video): https://www.youtube.com/watch?v=_TQ4r3ZL25Q A list of BikeGremlin websites and channels: https://www.bikegremlin.com/ List of all the BikeGremlin videos, sorted by categories: https://www.bikegremlin.com/youtube/ id: 1149 Support my work by becoming a BikeGremlin YouTube channel member (for $ 5 per month): https://www.youtube.com/c/BikeGremlinTube/join #bikegremlin #mostlyharmless