Bicycle magnetic headlight
Bulding a bicycle electricity generator helps to understand how it is possible to produce electricity from a magnet, a copper wire coil and a movement. This technique found in traditional bicycle dynamos is also used in electric power stations.
Unfortunately less bicycles are equiped with dynamos and systems powered by batteries are used instead, especially for red flashing rear lights.
This project shows a clever solution that avoids the use of batteries which contain chemical products and are quite expensive. Unlike a traditional bicycle dynamo, friction is limited as there is no direct contact with the wheel.
Difficulté
Difficile
Durée
3h
Note
Prix
~ 15 CHF
Témoignages
2
Réalisation
Cut two 4cm squares in fine plastic forex or plexiglass and, using a drill, drill the centres with a 4 mm bit. Pass ... Wind the copper wire beteween the 2 squares after leaving initially about 10cm free. Try to do it with some ...Isolate the coil by covering it with transparent sellotape. Start by connecting a LED at the end of the pair of electrical connectors. Attach the block of connectors to the top hole ... Melt the varnish covering the copper wire ends of the coil with the flame of a candle. Scrape of the soot with some ... Split a piece of hose pipe with a cutter. Surround the upper arm of the rear part of a bicycle frame and screw the dynamo ... Pass a bolt through the remaining hole of the dynamo support and tighten it with a nut. Fix the bar with the coil to the ...
Date | 22.11.2012 |
Auteur | Martin |
Traducteur | gros |
Finalité | Produire de la lumière ou de la chaleur |
Domaine | Energie Développement durable |
Langue(s) | français deutsch english |
License | ![]() |