2 maneiras fáceis de fazer uma turbina eólica grátis para gerar eletricidade
15:19
HOMEMADE STEAM GENERATOR, a good idea for old bicycle wheels
12:59
I tried to Power my Home with Wind Generators! (Worth it?)
15:01
15 ENERGY EFFICIENT INVENTIONS FOR YOUR HOME
20:39
I Never Have to Buy Electricity or Water Again! Free Electricity From a 3-in-1 Water Directly System
43:56
Create Your OWN HIGH POWER Solar Battery At Home Now!
13:46
How to Make a Powerful Brushless Motor - Super idea to create Brushless Motor
16:27
how to make an air powered engine
18:27