Motorcycle Downshift Acceleration Studies

[MSI]

Question on another forum brought up this article

• SAE 2020-01-0880, Quantifying Engine Braking for Various Common Street Motorcycles by Jansen, LeBlanc, Wilhelm, Shaw, et al.

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ABSTRACT

• Motorcycle engine braking was measured in each forward gear for a cross-section of typical street motorcycles. Using GPS data acquisition and video, deceleration relative to speed was examined. Motorcycle characteristics included various engine displacements and types of motorcycle. The data acquired will give more insight into the extent which engine braking is a factor for deceleration, a topic which has not been addressed in a peer-reviewed journal article to this date

Some sample graphics from the SAE article:

• List of bikes tested:

  

  MC bikes tested.png (79.02 KiB) Viewed 4238 times

  Summary of measurements:

  

  MC decel measurements.png (77.5 KiB) Viewed 4238 times

  Typical dataset (see their appendix)

  

  MC sample dataset.png (115.5 KiB) Viewed 4238 times

Another post added the following link/data:

• LightPointData Motorcycle Coast Down Data

where a link to a Cycle World (August 2003) article and they included this graphics:

MC Cycle World Article.png (951.69 KiB) Viewed 4238 times

Additional measurements were made and reported in the LightPointData article.