2-Wheeler Index ] Up one level ] 2. Evidence ] 3. Recommendation ] 4. New concepts ] 5. Other Theories ] 6. Links ] SiteMap ]

 1.4 The Torso-Arms-Handlebar theory is based on scientific principles:

This theory is not recent since it was presented in a mechanical engineering master thesis back in 1974, at Laval University in Quebec. But this thesis remained unknown until a Society of Automotive Engineers paper (SAE Paper 2000-01-3565, SAE like SAE 10W30 engine oil) was presented at the Motorsports Engineering Conference of November 2000 in Dearborn, Michigan.

Please do not be 'fear' the following diagram. Simply look at it and consider that this theory is based on servomechanism theory. Essentially, the Torso-Arms-Handlebar mechanism constitutes a key component of a non-obvious 'follower' steering servomechanism:

The next links do not go deeper in servomechanism theory:

Follow these links if you want to know more about the new Torso-Arms-Handlebar steering theory, without going deeper in servomechanism theory:

2. Evidence supporting the new steering theory

Eight pieces of evidence gleaned over the last 30 years and supporting this steering theory.

3. Recommendation to increase driving precision and safety

This theory can help increase your driving precision and safety, even in panic maneuvers.

4. New motorcycle concepts

This theory can help develop safer and more comfortable motorcycle concepts.

 

Please forget about the next links below, unless you are knowledgeable in servomechanism theory or you really want to know more, since these next links do go deeper into servomechanism theory:

1.4.1 Steering servomechanism based on the Torso-Arms-Handlebar theory

1.4.2 Which Torso-Arms-Handlebar geometry work best

1.4.3 Where does the steering servomechanism damping come from

1.4.4 The global system including the rider and 2-Wheeler in the road environment

 

 2-Wheeler Index ] Up one level ] 1.1 TAH Mechanism ] 1.2 Slow speed stability ] 1.3 Three steps ] [ 1.4 Scientific principles ]

The content of this site remains the sole property of Pierre M. Ethier. All rights reserved.
All information on this site is presented as is for the benefit of readers. Great efforts have been made to cover many aspects of 2-Wheeler steering and make texts and figures as clear as possible, in order to help ride and steer better. But It remains the sole and full responsibility of the reader to apply or test any recommendation, theory, suggestion…made. Thus, Pierre M. Ethier cannot be held responsible for any misunderstanding or any consequences resulting from using this information.
Send any question, remark, joke, complaint or suggestion to pierre.ethier@clevislauzon.qc.ca or to Pierre M. Ethier, 2120 Du Foulon, App. 8, Sillery, Quebec, Canada, G1T 1X4