Improvement in the design of a front hub for the BMX bicycle
- Autores: Rafael M. Pinillas Gutiérrez, Laia Miravet Garret, Juan Franquelo Soler, Fernando Gómez Hermosa, Francisco José Ortiz Zamora
- Localización: Advances in Design Engineering: proceedings of the XXIX International Congress INGEGRAF. 20-21 June 2019, Logroño, Spain / Francisco Cavas Martínez (dir. congr.), Félix Sanz Adán (dir. congr.), Paz Morer Camo (dir. congr.), Rubén Lostado Lorza (dir. congr.), Jacinto Santamaría Peña (dir. congr.), 2020, ISBN 3-030-41200-8, págs. 13-22
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
Bicycle wheels for BMX (Bicycle Moto Cross) are subjected to considerable stresses during the practice of this sport, particularly in the Freestyle mode where the execution of stunts and large jumps often causes the breakage of certain components.
This study describes the improved design of a front hub for this type of bicycle, which presents two essential advantages in comparison with the existing hubs according to a market survey. Its shell has been optimized to reduce the risk of broken spokes by redesigning the flanges to avoid stress concentration points while increasing their support surface. Moreover, the protection of the spokes is also improved by a new hub cover and the creation of a subdivision of the cone whose assembly provides greater fixation, which allows for maintaining the assembly of all the hub components either with or without the hub cover.
Other aspects of the design have been considered based on several investigations and surveys regarding both aesthetic concepts and other demands of this extreme sport.
