Posts Tagged fast
Homemade Windmill on windy day
Posted by Admin in Homemade Windmills on May 4th, 2010
The windmill has a diameter of about 30 inches and the blades were made on a 3 axis CNC router, so they have a perfect airfoil and the right amount of twist. The generator is a simple dc motor from pump. The whole system is charging a 3s2p pack of 2500mah nimh AA batteries, for a total of 6 at 3.8 volts. The left meter is amps and the right is the battery voltage. The pole is a 4 inch drainage pipe that is 10 ft long.
The max power ever recorded with this windmill is 30.4 watts (3.4 amps @ 9 volts). The rpm max is roughly 3000 rpm, about 1400rpm at 1 amp. I made this entire project in about 5 hours plus design time.
Duration : 0:2:13
Top Gear – Build your own limousines! BBC
Posted by Admin in How to Build Your Own Solar Panels on January 27th, 2010
It’s time for another Top Gear challenge, a fast racing game to the finish. This time, the boys are asked to make their own stretch limousines out of their car of choice. Watch as they face paintball gun attacks and the all dreaded 3 point turn challenge. From the BBC.
Duration : 0:9:57