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Aerodynamic Drag and Downforce of a Competition Motorcycle

Journal Article
2022-01-0892
ISSN: 2641-9637, e-ISSN: 2641-9645
Published March 29, 2022 by SAE International in United States
Aerodynamic Drag and Downforce of a Competition Motorcycle
Sector:
Citation: Katz, J., "Aerodynamic Drag and Downforce of a Competition Motorcycle," SAE Int. J. Adv. & Curr. Prac. in Mobility 4(6):1989-1998, 2022, https://doi.org/10.4271/2022-01-0892.
Language: English

Abstract:

The aerodynamic drag and lift of a sport-motorcycle was investigated in a full-scale and in a 1/6th scale wind tunnel tests. The results show the large vertical load transfer to the rear wheel as vehicle’s speed increases. Consequently, several simple dive and splitter-plates were tested to balance the motorcycle and primarily increase the front axle aerodynamic downforce. These devices were added at a relatively low position on the bodywork in order to avoid adverse handling effects while leaning in turns. This study shows the level of downforce that can be generated by simple add-ons without major alterations to the bodywork. Consequently, for higher levels of aerodynamic downforce, larger underbody surfaces or wings are needed.