After several weeks of experimenting and working we’ve been able to finish our works on the propeller helmet and are happy to present it for the first time to the public.

Reverse Jetpack

At first sight propellers seem to offer additional thrust but their function is the exact opposite: the helmet doesn’t push the driver forward but increases the efficiency of applied muscular power while riding our bikes. The propellers harness the airflow to convert it into electricity, which is stored in two built in batteries. Additional LED-lights provide direct light-feedback when propellers are rotating in order to visualise a sizeable relation between wind intensity and electricity and allow the unseen wind power to be perceived through light.

Green phone calls

First tests in the city of Basel, Switzerland showed that it requires an approx. 2h bicycle-ride at middle (wind) speed to charge the batteries completely (the helmet fulfills its duty also while snowboarding, skiing, sailing, hiking or kite/windsurfing.) You can then use the electricity stored in the helmet to load the batteries of your mobile devices (mobile phones, ipods etc) via two USB interfaces. The helmet can be operated in three different modes: device charging mode, light or airflow mode. We already had the pleasure to have the first “green” phone calls powered only by our bike rides through the city.

Medium helmet

Our goal with the helmet is not to launch another „green gadget “. We want to use it as a medium to sensibilise the public for environmental topics and to integrate sustainability topics into the lifestye of young people by creating a positive experience.