1 / 25

Bicycle Mechanics and Repair Decal Mechanical Engineering 98/198 spraaang 2014 Lecture 9

Bicycle Mechanics and Repair Decal Mechanical Engineering 98/198 spraaang 2014 Lecture 9. “Nobody likes a naughty atom because you always have to keep an ion them”. Different Component Brands. What are “Group” Components?. Derailleurs. Shifters. Brakes. Chain Rings/ Crank Arms*.

abbott
Download Presentation

Bicycle Mechanics and Repair Decal Mechanical Engineering 98/198 spraaang 2014 Lecture 9

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Bicycle Mechanics and Repair DecalMechanical Engineering 98/198spraaang 2014Lecture 9 “Nobody likes a naughty atom because you always have to keep an ion them”

  2. Different Component Brands

  3. What are “Group” Components? Derailleurs Shifters Brakes Chain Rings/ Crank Arms* Cassette/Freewheel

  4. Other Components Bottom Bracket Headset Wheels Pedals Saddle/ Seat Post Stem/ Handlebars

  5. Cost • Cost of components is usually due to precision, durability, materials, and weight. • Each of the main three brands has many different grades of components to fit different needs.

  6. Example: Shimano Components $34.99 $49.99 $89.99 $299.95 $124.99

  7. Components Headset Stem

  8. Introduction to Headsets • Allows for fork rotation relative to the bicycle frame • Consists of two cups with ball bearings that press into the top and bottom of the head tube

  9. Headset Types - Threaded • Locknut holds bearings in place • Fork steerer tube is threaded • Stem descends into headtube

  10. Threaded Headset Exploded View Quill Stem Wedge Threads Locknut Washer Adjustable Race Bearing Cartridge Upper Head-tube Race

  11. Threaded Headset Long bolt tightens wedge below The stem does not effect the bearing adjustment Nuts keep bearings tensioned Triangular wedge holds stem inside steerer tube

  12. Headset Maintenance Threaded Headsets • Unthread Locknut • Remove spacers • Unthread top race • Clean and grease bearings!

  13. Headset Types - Threadless • Stem clamps to steerer tube • No locknut • Cap bolt holds assembly in place

  14. Threadless Headset Exploded View Cap Bolt Top Cap Stem Spacers Comression Ring Adjustable Race Bearing Cartridge Upper Head-tube Race

  15. Threadless Headset Top cap pushes on stem and spacers Star nut grabs the inside of the steerer tube Spacers push on bearings

  16. Standard Threadless Headset - Remove stem and spacers - Remove fork - Clean bearings and grease! For sealed bearing headsets, replace bearings if needed

  17. Threaded vs. Threadless http://www.sheldonbrown.com/headsets.html

  18. Headset Types - Integrated • Same in function as threadless headset • Cups are pressed into frame • Bearing assembly sits inside head tube • Bearings may be housed inside cartridges that are easily removed

  19. Common Problems Shakiness The headset is not adjusted tight enough

  20. Stiffness The headset is adjusted too tight

  21. Headset tools • Headset Wrench • Headset Press • Headset Remover

  22. So e-z, a kid can do it! http://www.youtube.com/watch?v=yn0BMR62C2k

  23. Preloading Your Headset - Tighten the top cap - Check for rattle by bouncing your front wheel - Check for stiffness by swinging your handlebars

  24. Challenge

More Related