We worked on a new tail that would enable the windmill to stop automatically with high wind velocities. In this way the windmill won’t get damaged and the farmer can let it run for 24/7 without constantly checking it. The automatic breaking system is called a furling tail. To test if the furling principle works at the right wind velocity it should be tested in a windtunnel, however windtunnels are scarce in India and very expensive. That’s why we tested the tail on the back of a driving truck and thus creating our own low-cost windmill. The first furling tail was build by the fabricator of the windmill and had the right angle and dimensions but during testing we found out it was too heavy. The next day we build a new tail from aluminum. During building we got help from the guys of GIAN (Javed, Amit and Nirmish) and the workers of the fabricators. It was hard to find an empty and good road for testing on the truck, therefor we chose to test the aluminum tail at location in Amreli.