Anti-dive

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Hydraulic anti-dive
(motorcycle Kawasaki GPZ 900)

Among anti-dive is meant a device on wheeled vehicles, which the "immersion" during braking, that is, a pitching motion of the body forward through the dynamic wheel load is to prevent or reduce. It is also called brake buckling compensation .

Anti-dive in multi-lane vehicles

With the widespread independent suspension on double wishbones , the axles of the wishbones are inclined towards each other in order to achieve an anti-dive effect.

Anti-dive on motorcycles

In motorcycles there are mechanical or hydraulic systems that work on the telescopic fork . The first mechanical anti-dive systems appeared on racing motorcycles in 1979, among others at Kawasaki and Garelli . Hydraulic systems were first offered in production motorcycles by Suzuki and Yamaha in the early 1980s . In the early 1990s, all anti-dive systems disappeared from the market , also due to the appearance of the upside-down fork .

Mechanical systems
A pivoted rocker arm is taken along by the brake caliper of the disc brake during the braking process and is supported on the lower fork bridge with push struts . A higher maintenance requirement and an increased moment of inertia around the steering axis were found in racing machines. Mechanical systems were not used in series production.
Hydraulic systems
Brake line pressure is branched off via a short additional line and transferred from the brake caliper to a control piston. This control piston reduces the flow cross-section for the pressure stage of the telescopic fork and thus "hardens" the compression process. The designation for the anti-dive system was TRAC (Torque-Reactive-Antidive-Control) at Honda and AVDS (Automatic Variable Damping System) at Kawasaki

The mechanical anti-dive systems were more effective than the hydraulic anti-dive systems - comparable to the pushed swing arm . It was criticized that with hydraulic anti-dive systems - by throttling the compression damping - the effect was limited in time and the compression was delayed; harder spring identifications would be more effective.

Web links

Individual evidence

  1. ^ Jörnsen Reimpell, Jürgen W. Betzler: Fahrwerktechnik. Vogel Business Media, 5th edition 2005, ISBN 978-3-8343-3031-4 , p. 421
  2. ↑ http://performancetrends.com/Definitions/Anti-Dive.htm
  3. ↑ Jürgen Stoffregen: Motorcycle technology: Basics and concepts of engine, drive and chassis. Vieweg Verlag, Braunschweig, 7th edition 2010, ISBN 978-3-8348-0698-7 , p. 297
  4. ^ Helmut Werner Bönsch: Progressive motorcycle technology. 1st edition. Motorbuch Verlag Stuttgart 1985, ISBN 3-613-01054-2 , p. 234
  5. ^ Helmut Werner Bönsch: Progressive motorcycle technology. 1st edition. Motorbuch Verlag Stuttgart 1985, ISBN 3-613-01054-2 , p. 232
  6. ^ Helmut Werner Bönsch: Progressive motorcycle technology. 1st edition. Motorbuch Verlag Stuttgart 1985, ISBN 3-613-01054-2 , p. 235
  7. ↑ Jürgen Stoffregen: Motorcycle technology: Basics and concepts of engine, drive and chassis. Vieweg Verlag, Braunschweig, 7th edition 2010, ISBN 978-3-8348-0698-7 , p. 297
  8. ^ Helmut Werner Bönsch: Progressive motorcycle technology. 1st edition. Motorbuch Verlag Stuttgart 1985, ISBN 3-613-01054-2 , p. 237