Electric power generating bicycle

354 presentation will by given in the class of the leader of the team. In these occasions experiments, drawings, entertaining games, written descriptions, and photos will be used to help systematize what was learnt and to help register the events that took place. These will be exhibited in «Hands-on Science» Conference 2006. Those responsible for the project may add more activities to it upon the interests of the children. Abstract. It is manifest the growing interest in both personal health and environmental issues. The device described on this paper contemplates both aspects: generating environment-friendly electric power while keeping fit. A car alternator excited through a 12V battery is coupled to a mountain bicycle, and this arrangement enables the lighting of six halogen lamps, if a cyclist pedals fast enough. Such a machine gives rise to the thought of a self-powered gymnasium. Considerable physical effort is required in order to make the lamps glow, which is pedagogical since it shows clearly that spending energy is much easier than generating it.