Detangler

This article is about a bicycle brake mechanism. For the hair product, see hair conditioner.
A detangler

The detangler, Gyro or rotor[1] is an invention for the freestyle BMX bicycle, allowing the handlebars to turn a complete 360° rotation without the brake cables getting tangled up.[2]

A detangler is usually only used for the rear brake cable. The front brake cable can be routed through the stem, via a hollow stem bolt known as a Pott's mod bolt,[3] and fork steer tube to avoid the tangling problem.

How it works

The single cable from the handlebar's rear brake lever divides into two cables which are routed to opposite sides of the stem or fork steer tube and into cable stops. The inner cables connect to metal tabs on a disc attached to the upper side of a thrust bearing placed around the stem or steer tube. Squeezing the brake lever pulls the inner cables and causes the bearing assembly to rise. A second disc is attached to the bottom of the thrust bearing such that the entire assembly moves together up and down the steering axis while each disc can rotate independently around the axis. A second set of cables are attached to tabs on this lower disc and pass through cable stops mounted on the either side of the head tube. The two lower cables merge back into one and then are routed to the rear brake. The cables are split in this way to ensure that the detangler mechanism moves equally on both sides.

A simpler, less common variation of the system, termed a dual cables brake, does away with the splitters for the upper and lower cables, instead simply running two cables from the brake lever to the detangler and from there to the brake. While this may improve reliability, it may need more maintenance.

See also

References

  1. ^ Brown, Sheldon. "Sheldon Brown's Bicycle Glossary: Rotor". Sheldon Brown. Retrieved 14 August 2009.
  2. ^ Brown, Sheldon. "Sheldon Brown's Bicycle Glossary: Gyro". Sheldon Brown. Retrieved 14 August 2009.
  3. ^ Brown, Sheldon. "Sheldon Brown's Bicycle Glossary: Potts". Sheldon Brown. Retrieved 14 August 2009.

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.